A binding structure for snowshoes

Abstract

A snowshoe strap structure includes a tread, a strap, and a buckle. The tread is located at the bottom of the upper, corresponding to the front of the vamp. A first perforated member is protruding from the middle of the front of the tread. A second perforated member and a third perforated member are protruding from the front and rear of the inner side of the tread. The strap comprises two straps, and two buckles are provided on the outer side of the tread for tightening or loosening the straps. One end of the first strap is fixed to the outer front of the tread. The other end passes through the first perforated member forward, then turns back, passes through the second perforated member backward, turns back outward, and passes through the front buckle for tightening. One end of the second strap is fixed to the inner rear of the tread. The other end passes through the rear buckle for tightening. A drawstring is connected between the two buckles for tightening or loosening the straps. The present invention has a simpler and more reasonable structure, is more convenient and quick to operate, is easy to adjust, and has a firm and stable connection. Walking on snow is light, safe, and non-slip.

Description

Technical Field

[0001] The invention relates to an outdoor sports article, in particular to a binding structure of a snowshoe. Background Art

[0002] Snowshoes, also known as snow paws, bear paw shoes, snowshoes, and snow boots, are footwear used for walking on snow. By distributing the body's weight over a larger area, they prevent the foot from sinking completely into the snow. Traditional snowshoes are typically composed of a frame, an upper, treads, and a shoe upper. The upper includes a heel strap and lacing, and is worn by lacing and unlacing. However, this method is inconvenient. If the laces are tied tightly and knotted, they are difficult to remove. Furthermore, walking on snow is cumbersome and can easily lead to falls.

[0003] Snowshoes that can be quickly tied and removed have also appeared, such as Chinese Patent No. 200920115845.X, "A Snowshoe," which includes an outer frame, a bottom lining, a footrest, a rear base, a front base, a support strap, laces, two insoles, and two buckle straps. A hole is provided in the center-forward portion of the bottom lining for the insoles and front base to move through. The bottom lining is fixed to the outer frame, and the support strap is fixed to the center-forward portion of the outer frame. The center of the support strap spans the hole in the bottom lining. The two laces are mounted on the lugs of the insoles, and two buckle straps are fixed to the left and right sides of the insoles, respectively. While this snowshoe uses two parallel laces that are fastened with buckles, while having a relatively simple structure, it is not convenient or quick, and the laces are prone to loosening.

[0004] There is also a Chinese patent with patent number 201120333042.9, "A binding structure for snow boots", which is characterized by including: a treading part, with two front and rear perforated parts symmetrically provided on the left and right sides of the treading part respectively; a buckle body, with a rectangular hole opened in the middle part of the buckle body, and two longitudinal columns are provided in the rectangular hole to divide the rectangular hole into three longitudinal strip holes; a binding strap, the two ends of the binding strap respectively pass through the two perforated parts at the front end of the treading part from below, then turn back upward and cross each other, and then each pass through the two perforated parts at the rear end from below and then turn back upward, pass through the middle strip hole on the buckle body from both sides of the bottom of the buckle body, turn back upward, and then go around from above the longitudinal columns on both sides, and finally pass out from the strip holes on both sides. The strap structure is relatively simple and easy to operate. Only one strap is needed to cooperate with the buckle body to tighten the shoe. However, its structure is not reasonable enough. It is troublesome to punch the strap holes. Moreover, the buckle body is set in the middle, which will cause discomfort to the instep. Moreover, there is no limit point at the front end of the shoe. If the shoelaces are loose, the foot will move forward. Therefore, the structure needs further improvement.

[0005] In addition, the cross-section of the shoe frame of traditional snowshoes is made of round tubes. Although this reduces the weight and makes it easier to carry and use, the round cross-section makes the snowshoes' ability to break ice and snow less than ideal. It also makes it difficult to fix the side teeth and the upper on the shoe frame, and the firmness is not good enough. Therefore, further improvement is needed in structure. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a snowshoe binding structure with a simpler and more reasonable structure and more convenient and quicker operation in response to the above-mentioned technical status quo.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a binding structure for snowshoes, characterized in that: the binding structure includes a treading part, a binding strap and a buckle, the treading part is located at the bottom of the shoe upper corresponding to the front position of the shoe upper, a stopper is convexly provided at the middle of the front end of the treading part to prevent the shoe from moving forward, a first perforated part is opened on the stopper, left and right upper connecting pieces are respectively distributed on the left and right sides of the front of the treading part, and heel strap connecting pieces are arranged on the left and right sides of the rear of the treading part, wherein a second perforated part and a third perforated part are respectively provided on the upper connecting piece and the heel strap connecting piece on the inner side of the treading part, and a second perforated part and a third perforated part are respectively provided on the upper connecting piece and the heel strap connecting piece on the outer side of the treading part. The connecting piece is respectively provided with two front and rear buckles for locking or loosening the straps. There are two straps, one end of the first strap is fixed on the outer upper connecting piece of the treading part, and the other end of the first strap passes through the first perforated piece on the block forward, then folds back backward, passes through the second perforated piece of the inner upper connecting piece, then folds back outward, and passes through the front buckle for locking; one end of the second strap is fixed to the third perforated piece of the heel strap connecting piece on the inner side of the treading part, and the other end of the second strap passes outward through the rear buckle for locking. The two straps are connected together after passing through the buckles, and a drawstring is connected between the two buckles for loosening or locking the two straps.

[0008] Furthermore, the buckle is composed of a buckle body and a pressure plate. The upper end of the buckle body is recessed with a notch, and a baffle is laterally provided at the upper end of the notch. Axle holes are symmetrically provided in the middle of both sides of the notch. The lower end of the pressure plate is a second connecting part rotatably connected to the buckle body. A through hole corresponding to the axle hole is laterally provided on the second connecting part. The lower end of the pressure plate is rotatably connected to the buckle body through a connecting shaft with a torsion spring. The strap passes through the baffle downward from the inner side of the second connecting part of the pressure plate and then extends out of the buckle body from the other side of the baffle. A tooth-like structure that contacts the strap is laterally convex on the inner side of the second connecting part. The upper end of the pressure plate is provided with a connecting hole. The two ends of the pull rope are respectively connected to the upper ends of the pressure plates of the two buckles. By pulling the pull rope, the pressure plate is driven to rotate, thereby realizing that the tooth-like structure is tightly against the strap or loosened from the strap.

[0009] Furthermore, the connecting hole is horizontally opened in the middle of the upper end of the pressure plate, and the second connecting part of the lower end of the pressure plate is a cam-shaped structure, the outer side of which is a smooth arc surface, and the tooth structure of the inner side is a plurality of strip-shaped convex teeth arranged at laterally intervals.

[0010] Furthermore, the treading part is a plastic part, and the rear end of the treading part is connected to the left heel strap and the right heel strap, wherein the rear end of the left heel strap passes through the positioning hole on the rear connecting piece of the treading part, so that its front end is fixedly connected to the second strap, and a rivet hole is provided at the lower end of the buckle body of the buckle, the front buckle is riveted and fixed to the corresponding front outer shoe upper connecting piece, the front end of the right heel strap is riveted and fixed to the outer connecting piece, and the lower end of the rear buckle is riveted and fixed to the front end of the right heel strap.

[0011] Furthermore, the left heel strap is provided with a plurality of positioning buckles, and the right heel strap is provided with a plurality of positioning holes, and the left heel strap and the right heel strap can be connected together by adjusting the tightness thereof through the cooperation of the positioning buckles and the positioning holes, or the left heel strap is provided with a plurality of positioning holes, and the right heel strap is provided with a plurality of positioning holes, and the left heel strap and the right heel strap can be connected together by adjusting the tightness thereof through the cooperation of the positioning buckles and the positioning holes.

[0012] Furthermore, the free ends of the first strap and the second strap are respectively provided with buckles or rivets for matching connection. After the two straps pass through the buckles, they are connected together through the buckles or rivets to form a handle.

[0013] Furthermore, the bottom of the shoe upper and the front tooth piece are fixed together, and a hollow portion is provided on the shoe upper corresponding to the position of the front tooth piece. The main body of the front tooth piece is a metal plate, and the first front tooth and the second front tooth are bent and pressed out at the front and back of the metal plate respectively, and a mounting sleeve hole is formed between the front tooth piece and the bottom of the shoe upper. An axle sleeve is provided in the middle of the metal cross bar, and correspondingly, the axle hole is opened on the overlapping part of the side tooth piece and the shoe frame. The front tooth piece is rotatably connected to the shoe frame through the axle sleeve and the metal cross bar.

[0014] Preferably, the shoe frame is made of a metal pipe with a triangular main cross-section, and is a U-shaped structure with an open rear end, a basically horizontal middle part, and upturned ends. The tail connector is fixedly connected to the rear end opening position of the shoe frame. The upper end surface of the shoe frame is a mounting surface for mounting the shoe upper. The lower end of the shoe frame is basically in the shape of a triangular tip. At the bottom of the triangular tip structure at the lower end of the shoe frame, a number of side teeth are arranged at intervals to increase the anti-slip effect.

[0015] Preferably, the tail connector is a V-shaped structure or a U-shaped structure with an arc transition shape, and the tail connector is arranged at the rear end opening position of the shoe frame by plugging, screw connection, riveting or welding to form a closed ring.

[0016] Furthermore, both ends of the tail connector are provided with plug-in parts that cooperate with the triangular holes of the metal pipe with a triangular cross-section at the opening of the shoe frame. The tail connector is fixed to the rear end of the shoe frame through size matching, and the middle part of the upper end surface of the tail connector is provided with a first connecting part that is riveted or screwed to the rear end of the shoe upper.

[0017] Preferably, the metal tube with a triangular cross-section has an isosceles triangle or a right triangle cross-section. When the cross-section is an isosceles triangle, the bottom side serves as the upper end face of the shoe frame, the top angle serves as the lower end of the shoe frame, and the side teeth are arranged on the top angle end. When the cross-section is a right triangle, one of the right-angled sides serves as the upper end face of the shoe frame, the acute angle of the other right-angled side serves as the lower end of the shoe frame, the right-angled side serves as the inner side face of the shoe frame, and the side teeth are arranged on the inner side face of the shoe frame.

[0018] Preferably, the shoe frame is a one-piece structure made of a metal pipe with a triangular cross-section, or a two-piece structure formed by welding two left and right sections or two front and back sections.

[0019] Finally, the upper is fixed to the upper end of the shoe frame by riveting or screwing. The upper adopts a composite hard plastic base and a soft plastic panel. A heel pedal is fixed to the rear of the upper by riveting or screwing, and a lifting device is provided on the heel pedal.

[0020] Compared with the prior art, the advantages of the present invention are as follows: a first perforated piece is provided at the front end of the tread portion, which can not only tighten the back of the foot after putting on the shoes, but also limit the front end of the foot to prevent loosening; front and rear perforated pieces are provided on the inner side of the tread portion, two buckles are provided on the outer side of the tread portion, and two straps are provided, which makes threading the straps simpler and more convenient and quick to put on the shoes; after putting on the shoes, just pull the drawstring to tighten the straps, and when loosening, pull the drawstring to quickly loosen them, which makes taking off the shoes very convenient; the left heel strap and the right heel strap can be connected together by adjusting the tightness through the cooperation of the positioning buckle and the positioning hole, which is suitable for fast binding of shoes of different sizes; the tread portion is fixed to the upper end surface of the front teeth, which increases the force on the front teeth, The shoe frame improves the grip and anti-skid effect when walking on the snow, and is not easy to fall; the shoe frame is made of a metal pipe with a triangular cross-section, which is light in weight and has good strength; the upper end surface of the shoe frame is flat, and the upper can be conveniently fixed to the upper end surface of the shoe frame by rivets, screws or welding, and the side teeth are easily installed and fixed on the side of the shoe frame, which is easy to install and firm and stable; the lower end of the shoe frame is triangular, with a small contact area with the ground and low dragging friction; the shoe frame will cut into the ice and snow layer to different depths in different hard and soft ice and snow layers, so it can self-adjust the cutting depth to a certain extent, thereby improving skiing stability; the front teeth are arranged at the bottom of the shoe frame, which increases the anti-skid effect when walking on the snow, is not easy to fall, and can greatly improve the strength of the shoe frame.

[0021] The invention has a simpler and more reasonable structure, is more convenient and quick to operate, is easy to adjust, has a firm and stable connection, and is light, safe, and non-slip when walking on the snow, and is suitable for people who like snow sports. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a snowshoe according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Top view

[0024] Figure 3 for Figure 1 Exploded view of

[0025] Figure 4 A further breakdown of the snowshoes;

[0026] Figure 5 Schematic diagram of the structure of the button in the embodiment of the present invention;

[0027] Figure 6 for Figure 5 Exploded view of

[0028] Figure 7 This is one of the exploded views of the shoe frame structure;

[0029] Figure 8 This is the second exploded view of the shoe frame structure;

[0030] Figure 9 A three-dimensional image of a shoe frame;

[0031] Figure 10 This is a three-dimensional exploded view of the shoe frame;

[0032] Figure 11 is a cross-sectional view of the shoe frame;

[0033] Figure 12 This is a three-dimensional diagram of the connection structure between the front gear and the upper;

[0034] Figure 13 This is the second stereoscopic diagram of the connection structure between the front gear and the upper;

[0035] Figure 14 This is one of the three-dimensional exploded views of the connection structure between the front gear and the upper;

[0036] Figure 15 This is the second exploded view of the front gear and upper connection structure;

[0037] Figure 16 Schematic diagram of the structure of the shoe frame;

[0038] Figure 17 It is the front view of the shoe frame;

[0039] Figure 18 is a top view of another shoe frame;

[0040] Figure 19 is a cross-sectional view of another shoe frame;

[0041] Figure 20 A top view of another shoe frame;

[0042] Figure 21 This is a cross-sectional view of another shoe frame. DETAILED DESCRIPTION

[0043] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0044] The snow boots of this embodiment mainly include four parts: a shoe frame 1, a shoe upper 6, shoe teeth and a shoe upper 5. The shoe teeth include a side tooth piece 3, a front tooth piece 9 and a rear tooth piece 8. The side tooth piece 3 and the rear tooth piece 8 are installed on the shoe frame 1 to form a shoe frame structure, wherein:

[0045] The shoe frame structure includes a shoe frame 1 and a tail connector 2, see Figure 7 、 8 The shoe frame 1 is made of a metal pipe with a triangular cross-section, and has a U-shaped structure with a rear end opening 11, a substantially horizontal middle portion, and upwardly curved ends. The metal pipe with a triangular cross-section can be made of aluminum alloy, stainless steel, or steel. The tail connector 2 is fixedly connected to the rear end opening 11 of the shoe frame 1 to form a closed ring-shaped shoe frame 1. The upper end surface of the shoe frame 1 is a mounting surface 13 for mounting the upper 6. The mounting surface 13 is usually flat to facilitate mounting the upper 6 and improve the connection strength. The lower end of the shoe frame 1 is a triangular tip, see Figure 11 At the bottom of the triangular tip structure at the lower end of the shoe frame 1, a number of side teeth 3 are installed at intervals to increase the anti-slip effect.

[0046] The head of the shoe frame 1 is bent upward at an angle of 15° to 45°, the middle portion of the shoe frame 1 is substantially horizontal, and the tail portion of the shoe frame 1 is bent upward at an angle of 5° to 30°. The width of the head portion of the shoe frame 1 is greater than the width of the tail portion, and the shoe frame 1 gradually narrows. The tail connector 2 is a V-shaped or U-shaped structure with a circular arc transition. The cross-sectional shape of the tail connector 2 is substantially consistent with the cross-sectional shape of the metal pipe, so that adjacent portions thereof can transition substantially flush. The tail connector 2 is disposed at the rear end opening 11 of the shoe frame 1 by means of a plug-in connection, screw connection, rivet connection, or welding connection. This embodiment employs a plug-in connection, so that in this embodiment, both ends of the tail connector 2 are provided with protruding plug-in portions 21 that mate with the triangular opening 11 of the triangular cross-sectional metal pipe of the shoe frame 1. The tail connector 2 is plug-in fixed to the rear end of the shoe frame 1 by size matching. A first connecting portion 22 is provided in the middle portion of the upper end surface of the tail connector 2, which is riveted to the rear end of the shoe upper 6. The cross section of the metal pipe with a triangular cross section is preferably an isosceles triangle or a right triangle cross section, with a certain arc transition at the corner tip to avoid injury. This embodiment uses a metal pipe with a right triangle cross section, see Figure 11 , wherein one right-angled side serves as the upper end face of the shoe frame 1, and the acute angle 14 of the other right-angled side serves as the lower end of the shoe frame 1, and the side teeth 3 are fixed on the inner side of the right-angled side 15 of the acute angle 14. The side teeth 3 are distributed between the head bent end and the rear bent end of the shoe frame 1, and the lower end of the side teeth 3 has a tooth-like structure with a pointed tip and high and low intervals. The side teeth 3 can be fixed to the inner side face of the shoe frame 1 by welding, screwing or riveting, and connected to the inner side face of the shoe frame 1 to form an integral structure. In this embodiment, the side teeth 3 are divided into a front first side tooth 30 and a rear second side tooth 31. The front first side tooth 30 and the rear second side tooth 31 are symmetrically installed on both sides of the shoe frame 1, and the front first side tooth 30 and the rear second side tooth 31 are arranged one in front of the other on one side of the shoe frame. The vertical right-angled sides of the triangular metal tube of the shoe frame 1 are provided with mounting holes 12 , which facilitate riveting the side teeth 3 to the inner side surface of the shoe frame 1 .

[0047] like Figures 7 and 8The rear tooth member 8 is laterally fixedly disposed between the inner walls of the middle and rear portions of the shoe frame 1. The rear tooth member 8 comprises a transverse metal plate 82 with bottom spikes formed on the bottom of the transverse metal plate 82. The bottom spikes are of substantially the same height. Side flanges 81 extend from the left and right sides of the transverse metal plate 82. The side flanges 81 are provided with mounting holes and are secured to the inner walls of the shoe frame 1 via connectors such as rivets or screws. The front first side teeth 30 and the rear second side teeth 31 are symmetrically disposed in two front and rear sections. The rear second side teeth 31 are integrally formed with the rear tooth member 8. The lower ends of the side flanges 81 of the rear tooth member 8 are folded outwardly to align substantially vertically with the bottom of the shoe frame 1, and side spikes are formed on the bottom. The front first side teeth 30 are arranged on the left and right sides of the front part of the shoe frame 1 corresponding to the position of the front tooth part 9. The front first side teeth 30 include a metal plate. The upper end of the metal plate is provided with a through hole corresponding to the mounting hole 12 of the shoe frame 1. The lower end of the metal plate is folded outward and basically vertically aligned with the bottom of the shoe frame 1, and side thorns are formed at the bottom. The front first side teeth 30 are fixed to the side of the shoe frame 1 by connecting parts such as rivets or screws.

[0048] like Figures 12-15 The front tooth piece 9 is arranged horizontally between the front inner walls of the shoe frame 1. The position of the shoe upper 6 corresponding to the front tooth piece 9 is provided with a hollow portion 61. The hollow portion 61 is generally trapezoidal in shape, with a rounded transition at the corner. The main body of the front tooth piece 9 is a metal plate 90. Three first front teeth 91 and two second front teeth 92 are bent and pressed out of the front and back of the metal plate respectively. The first front teeth 91 and the second front teeth 92 both have bottom teeth of different heights. A transverse local axis hole 93 is pressed out of the middle part of the metal plate of the front tooth piece 9. Correspondingly, the treading portion 50 is arranged at a position corresponding to the hollow portion 61. The metal plate of the front tooth piece 9 is riveted to the bottom front end of the treading portion 50 of the shoe upper 5. It is connected and fixed, and a mounting sleeve hole is formed between the metal plate of the front tooth piece 9 and the bottom of the stepping part 50 of the upper 5. A metal cross bar 4 passes through the mounting sleeve hole and is connected to the axial hole 16 on the front inner wall of the shoe frame 1. In order to improve the strength of the shoe frame 1, the axial hole 16 is usually opened on the overlapping part of the side tooth piece 3 and the shoe frame 1. A shaft sleeve 41 is sleeved in the middle of the metal cross bar 4. The front tooth piece 9 is rotatably connected to the shoe frame 1 through the shaft sleeve 41 and the metal cross bar 4. Usually, in order to limit the movement of the front tooth piece 9 on the metal cross bar 4, limit sleeves 42 are respectively sleeved on the left and right ends of the metal cross bar 4, and each limit sleeve 42 is sleeved between the shaft sleeve 41 and the side of the shoe frame 1.

[0049] Thus, the side teeth 3, front teeth 9, and rear teeth 8 provide safety and anti-slip functions, making it difficult to fall when walking on snow. In addition, the side teeth 3 improve the installation strength between the shoe frame 1 and the metal crossbar 4, and the rear teeth 8 improve the strength of the shoe frame 1. Of course, the shoe frame 1 is not limited to a single-piece structure made of triangular cross-section metal pipes. The shoe frame 1 can also be a two-piece structure formed by welding left and right sections, with the metal crossbar 4 connected between the left and right sections of the shoe frame 1 to strengthen the structure.

[0050] The upper 6 is fixed to the upper end surface of the shoe frame 1 by rivets. The upper 6 can be made of a hard plastic base and a soft plastic panel. A heel pedal 7 is fixed to the rear of the upper 6 by rivets. The heel pedal 7 is provided with a lifting device 10. The upper 5 includes an upper body, and the upper 5 body is provided with a left heel strap 55, a right heel strap 56, a first strap 51, a second strap 52 and a buckle 53.

[0051] See also Figure 1 、 7 The lifting device 10 includes a support rod 101, which is a U-shaped metal rod with left and right sides bent downward. The rear crossbar of the support rod 101 is a corrugated crossbar. The support rod 101 is arranged on the upper 6 so as to be rotatable up and down around the heel pedal 7. The left and right sides of the heel pedal 7 are provided with positioning slots 62 on the upper 6 for the two ends of the support rod 101 to pass through and lift and position. The positioning slots 62 have a front limit notch 621 and a rear limit notch. Slot 622, when the support rod 101 falls on the front limit slot 621, the support rod 101 is in a raised state, forming an angle with the heel pedal 7, which is not greater than 90°; when the support rod 101 falls on the rear limit slot 622, the support rod 101 is set on the shoe upper 6 and is basically flush with the heel pedal 7; both ends of the support rod 101 pass downward through the positioning slot 62 and are rotatably connected to the connecting plate 102 fixed on the horizontal metal plate 82 of the rear gear 8. The connecting plate 102 is preferably a U-shaped metal plate, a connecting hole is opened in the middle of the connecting plate 102, and a corresponding through hole is opened in the middle of the transverse metal plate 82. The connecting plate 102 is fixed to the rear side of the transverse metal plate 82 by fixing parts such as screws or rivets. Axial holes are provided on the left and right sides of the connecting plate 102, and the ends of the bent ends on the left and right sides of the support rod 101 are bent inward to form connecting short shafts. The support rod 101 passes through the axial holes through the connecting short shafts on both sides to achieve rotatable connection with the connecting plate 102.

[0052] The strap structure belongs to the shoe upper 5, which mainly includes a treading part 50, a first strap 51, a second strap 52 and a buckle 53. The treading part 50 is located at the bottom of the shoe upper 5 corresponding to the front position of the vamp 6, and the treading part 50 is a plastic part.

[0053] like Figure 12A stopper 57 is provided at the middle of the front end of the treading portion 50 to prevent the shoe from moving forward. A first perforated member 501 is provided on the stopper 57. Shoe upper connecting pieces 58 are respectively provided on the left and right sides of the front of the treading portion 50. Heel strap connecting pieces 59 are provided on the left and right sides of the rear of the treading portion 50. A left heel strap 55 and a right heel strap 56 are provided at the rear of the treading portion 50. A plurality of positioning holes are provided on the left heel strap 55, and a plurality of positioning holes are provided on the right heel strap 56. The left heel strap 55 and the right heel strap 56 can be connected to each other through the cooperation of the positioning buckle and the positioning hole to adjust the tightness thereof. Together, it is convenient to adjust the length of the heel strap to suit the binding and locking of shoes of different sizes. Among them, the upper connecting piece 58 on the inner side of the treading part 50 (that is, the left side of this embodiment) and the left heel strap 55 are respectively provided with a second perforated member 502 and a third perforated member 503, and the upper connecting piece 58 on the outer side of the treading part 50 (that is, the right side of this embodiment) and the right heel strap 56 are respectively provided with two front and rear buckles 53 that can lock or loosen the strap. There are two straps, namely the first strap 51 and the second strap 52. One end of the first strap 51 is fixed The other end of the first strap 51 passes through the first perforated piece 501 on the stopper 57 on the outside right side of the tread portion 50, then turns back and passes through the second perforated piece 502 on the inside left side of the tread portion 50, and then turns back outward and passes through the front buckle 53 to be locked. One end of the second strap 52 is fixed to the third perforated piece 503 of the left heel strap 55 on the inside of the tread portion 50, and the other end of the second strap 52 passes through the back buckle 53 to be locked. The two straps are connected together after passing through the buckle 53. Usually, the first strap 52 is fixed to the third perforated piece 503 of the left heel strap 55 on the inside of the tread portion 50, and the other end of the second strap 52 passes through the back buckle 53 to be locked. The free ends of the strap 51 and the second strap 52 are respectively provided with buckles or rivets for buckling together. The two straps pass through each group of corresponding buckles 53 and are connected together by buckles or rivets to form a handle. This makes the strap locking operation very convenient and quick. The upper 6 and the heel can be locked at the same time with just one pull. There is no need to tighten the strap twice to lock the upper 6 and the heel separately in the traditional way. A pull rope 54 is connected between the two buckles 53, which can be used to loosen or lock the two straps, making it convenient to open the two buckles 53 at the same time and loosen the two straps on the upper 6 and the heel at the same time. Usually, the rear end of the left heel strap 55 passes through the positioning hole on the heel strap connecting piece 59 of the pedal part 50, so that the front end of the left heel strap 55 is fixedly connected to the second strap 52. The front end size of the left heel strap 55 is usually larger than the positioning hole, which can prevent it from moving out. A rivet hole is provided at the lower end of the buckle body 531 of the buckle 53. The front buckle 53 is riveted and fixed to the corresponding front outer right shoe upper connecting piece 58, the front end of the right heel strap 56 is riveted and fixed to the outer heel strap connecting piece 59, and the lower end of the rear buckle 53 is riveted and fixed to the front end bending part of the right heel strap 56.

[0054] like Figures 5 and 6The buckle 53 is composed of a buckle body 531 and a pressure plate 532. The upper end of the buckle body 531 is concavely provided with a notch 531a, and a baffle 531b is horizontally provided at the upper end of the notch 531a. Axle holes 531c are symmetrically opened in the middle of both sides of the notch 531a. The lower end of the pressure plate 532 is a second connecting portion 532a rotatably connected to the buckle body 531. A through hole 532c corresponding to the axis hole 531c is horizontally opened on the second connecting portion 532a. The lower end of the pressure plate 532 is rotatably connected to the buckle body 531 through a connecting shaft with a torsion spring. The first strap 51 or the second strap 52 is rotated from the pressure plate 532. The inner side of the second connecting part 532a passes downward through the baffle 531b and then extends out of the buckle body 531 from the other side of the baffle 531b. The inner side of the second connecting part 532a is laterally protruded with a tooth-like structure 532b that is connected to the first strap 51 or the second strap 52. The upper end of the pressure plate 532 is provided with a connecting hole 532d. The two ends of the pull rope 54 are respectively connected to the upper ends of the pressure plates 532 of the two buckles 53. By pulling the pull rope 54, the pressure plate 532 is driven to rotate, thereby realizing the tight contact between the tooth-like structure 532b and the first strap 51 or the second strap 52 or the loosening of the tooth-like structure 532b and the first strap 51 or the second strap 52. The outer side surface of the pressure plate 532 is a smooth arc surface, and the connecting hole 532d is horizontally opened in the middle position of the upper end of the pressure plate 532. The second connecting part 532a at the lower end of the pressure plate 532 is a cam-shaped structure, the outer side surface of which is a smooth arc surface, and the tooth structure 532b on the inner side surface is three strip-shaped convex teeth arranged at intervals laterally.

[0055] During installation, first install the front side gear 3 in the shoe frame 1, and fix the front gear 9 to the front bottom of the shoe upper 5 by riveting. When fixing, first install the metal cross bar 4 and the shaft sleeve 41, and then install it through the mounting hole to rotate with the shoe frame 1, then plug and fix the tail connector 2 to the shoe frame 1, and then install the rear gear 8 to the shoe frame 1, and then fix the upper 6 to the shoe frame 1 by rivets, and then install the heel pedal 7 on the upper 6, and the lifting device 10 is ready.

[0056] When the snow boots need to be taken off, the first and second straps 51, 52 can be loosened by pulling the drawstring 54 so that they can be taken off easily.

[0057] like Figures 18 and 19 As shown, the shoe frame in this embodiment adopts a metal pipe with a triangular cross-section on the upper body, and a right-angled triangular cross-section, see Figure 19 One of the right-angled sides serves as the upper end face of the shoe frame 1, and the acute angle 14 of the other right-angled side serves as the lower end of the shoe frame 1. Moreover, the other right-angled side 15 can directly extend downward to form a side tooth part 3, which is similar to an integrally formed metal pipe with fins. In this way, the side tooth part 3 and the shoe frame 1 are an integral structure, and the rest is similar to the embodiment example 1.

[0058] like Figure 20 、 21 As shown, it is of course not limited to the metal pipe with a right triangle shape, but can also be a metal pipe with an isosceles triangle cross-section, the bottom side of which serves as the upper end face of the shoe frame 1, and the top angle 14a serves as the lower end of the shoe frame 1. The side tooth 3 can be formed into an integral structure with the top angle 14a end of the shoe frame 1 through a profile forming process, so that its tooth structure is set and fixed on the top angle 14a end, located at the neutral line position of the top angle 14a, and the shoe frame 1 is formed by butt-welding the front and rear sections. The rest is similar to embodiment example 1.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A binding structure for snowshoes, characterized by: The strap structure includes a treading part, a strap and a buckle. The treading part is located at the bottom of the shoe upper corresponding to the front position of the shoe upper. A stopper is convexly provided at the middle of the front end of the treading part to prevent the shoe from moving forward. A first perforated part is provided on the stopper. The left and right sides of the front of the treading part are respectively provided with left and right upper connecting pieces. The left and right sides of the rear of the treading part are arranged with heel strap connecting pieces. Among them, the upper connecting piece and the heel strap connecting piece on the inner side of the treading part are respectively provided with a second perforated piece and a third perforated piece. The upper connecting piece and the heel strap connecting piece on the outer side of the treading part are respectively provided with two front and rear parts for locking or releasing the strap. The shoe has a loose buckle and two straps. One end of the first strap is fixed to the outer upper connecting piece of the treading part, and the other end of the first strap passes through the first perforated piece on the block forward, then folds back backward, passes through the second perforated piece of the inner upper connecting piece, then folds back outward, and passes through the front buckle to be locked; one end of the second strap is fixed to the third perforated piece of the heel strap connecting piece on the inner side of the treading part, and the other end of the second strap passes outward through the rear buckle to be locked. The two straps are connected together after passing through the buckles, and a drawstring is connected between the two buckles to loosen or tighten the two straps.

2. The binding structure according to claim 1, characterized in that: The buckle is composed of a buckle body and a pressure plate. The upper end of the buckle body is concavely provided with a notch, and a baffle is horizontally provided at the upper end of the notch. Axle holes are symmetrically opened in the middle of both sides of the notch. The lower end of the pressure plate is a second connecting part rotatably connected to the buckle body. The second connecting part is horizontally provided with a through hole corresponding to the axle hole. The lower end of the pressure plate is rotatably connected to the buckle body through a connecting shaft with a torsion spring. The strap passes through the baffle downward from the inner side of the second connecting part of the pressure plate and then extends out of the buckle body from the other side of the baffle. The inner side of the second connecting part is laterally convex with a toothed structure that contacts the strap. The upper end of the pressure plate is provided with a connecting hole. The two ends of the pull rope are respectively connected to the upper ends of the pressure plates of the two buckles. By pulling the pull rope, the pressure plate is driven to rotate, thereby realizing that the toothed structure is tightly against the strap or loosened from the strap.

3. The binding structure according to claim 2, characterized in that: The connecting hole is opened transversely in the middle of the upper end of the pressing plate. The second connecting part of the lower end of the pressing plate is a cam-shaped structure, the outer side of which is a smooth arc surface, and the tooth structure of the inner side is a plurality of strip-shaped convex teeth arranged transversely at intervals.

4. The binding structure according to claim 3, characterized in that: The treading part is a plastic part, and the rear end of the treading part is connected to the left heel strap and the right heel strap, wherein the rear end of the left heel strap passes through the positioning hole on the heel strap connecting piece of the treading part, so that the front end of the heel strap connecting piece is fixedly connected to the second strap, and a rivet hole is provided at the lower end of the buckle body of the buckle, the front buckle is riveted and fixed to the corresponding front outer shoe upper connecting piece, the front end of the right heel strap is riveted and fixed to the outer heel strap connecting piece, and the lower end of the rear buckle is riveted and fixed to the front end of the right heel strap.

5. The binding structure according to claim 4, characterized in that: The left heel strap is provided with a plurality of positioning buckles, and the right heel strap is provided with a plurality of positioning holes. The left heel strap and the right heel strap are connected together in an adjustable manner through the cooperation of the positioning buckles and the positioning holes. Alternatively, the left heel strap is provided with a plurality of positioning holes, and the right heel strap is provided with a plurality of positioning holes. The left heel strap and the right heel strap are connected together in an adjustable manner through the cooperation of the positioning buckles and the positioning holes.

6. The binding structure according to claim 5, characterized in that: The free ends of the first strap and the second strap are respectively provided with buckles or rivets for matching. After the two straps pass through the buckles, they are connected together through the buckles or rivets to form a handle.

7. The binding structure according to claim 1, characterized in that: The bottom of the shoe upper and the front tooth piece are fixed together, and a hollow portion is provided on the shoe upper corresponding to the position of the front tooth piece. The main body of the front tooth piece is a metal plate, and the first front tooth and the second front tooth are bent and pressed out at the front and back of the metal plate respectively, and a mounting sleeve hole is formed between the front tooth piece and the bottom of the shoe upper. An axle sleeve is provided in the middle of the metal cross bar, and correspondingly, an axle hole is opened on the overlapping part of the side tooth piece and the shoe frame. The front tooth piece is rotatably connected to the shoe frame through the axle sleeve and the metal cross bar.

8. The binding structure according to claim 7, characterized in that: The shoe frame is made of a metal pipe with a triangular main cross-section and has a U-shaped structure with an open rear end, a basically horizontal middle part, and upturned ends. The tail connector is fixedly connected to the rear end opening position of the shoe frame. The upper end surface of the shoe frame is a mounting surface for mounting the shoe upper. The lower end of the shoe frame is basically in a triangular pointed shape. At the bottom of the triangular pointed structure at the lower end of the shoe frame, a number of side teeth are arranged at intervals to increase the anti-slip effect.

9. The strap structure according to claim 8, characterized in that: The tail connector is a V-shaped structure or a U-shaped structure with an arc transition shape. The tail connector is arranged at the rear end opening position of the shoe frame by plugging, screw connection, riveting or welding to form a closed ring.

10. The binding strap structure according to claim 9, characterized in that: Both ends of the tail connector are provided with plug-in parts that cooperate with the triangular holes of the metal pipe with a triangular cross-section at the opening of the shoe frame. The tail connector is fixed to the rear end of the shoe frame through size matching. The middle part of the upper end surface of the tail connector is provided with a first connecting part that is riveted or screwed to the rear end of the shoe upper.

11. The strap structure according to claim 10, characterized in that: The metal pipe with a triangular cross-section has a cross-section of an isosceles triangle or a right triangle. When the cross-section is an isosceles triangle, the bottom side serves as the upper end face of the shoe frame, the top angle serves as the lower end of the shoe frame, and the side teeth are arranged on the top angle end. When the cross-section is a right triangle, one of the right-angled sides serves as the upper end face of the shoe frame, the acute angle of the other right-angled side serves as the lower end of the shoe frame, the right-angled side serves as the inner side face of the shoe frame, and the side teeth are arranged on the inner side face of the shoe frame.

12. The binding strap structure according to claim 7, characterized in that: The shoe frame is made of a metal pipe with a triangular cross section and is a one-piece structure, or is a two-piece structure formed by welding two left and right sections or two front and back sections.

13. The binding strap structure according to claim 7, characterized in that: The shoe upper is fixed to the upper end surface of the shoe frame by riveting or screwing. The shoe upper adopts a composite hard plastic base plate and a soft plastic panel. A heel pedal is fixed to the rear of the shoe upper by riveting or screwing. The heel pedal is provided with a lifting device.

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