Four-point positioning quick-entry ski binding

Abstract

This invention relates to the field of ski boot binding technology, and discloses a four-point positioning quick-wear ski binding comprising a mounting frame fixed to the ski and a mounting plate for fixing to the bottom of the ski boot. The mounting frame includes a base plate, a heel, and a side; two front fixing parts are slidably connected to the base plate, and two rear fixing parts are slidably connected to the base plate; the base plate is provided with a driving mechanism; the mounting plate is provided with front fixing engagement parts and rear fixing engagement parts. This invention has the following advantages and effects: by setting four-point positioning, the two front fixing parts and two rear fixing parts are all located on the side of the mounting frame, their positions are concealed, and the ski boot binding frame has a complete and simple appearance; in existing step-in bindings, the ski boot fixing parts have recesses that easily accumulate snow and require frequent cleaning; in this application, the front and rear fixing engagement parts on the ski boot protrude outside the ski boot, preventing snow accumulation.

Description

Technical Field

[0001] This invention relates to the field of ski boot binding technology, and in particular to a four-point positioning quick-wear ski binding. Background Technology

[0002] Ski bindings are crucial in skiing because they connect the skis and boots, linking the skier's body to the boots. All the movements and pressures applied by the skier to the boots are directly transferred to the skis through the bindings.

[0003] Currently, the most common bindings on the market are step-in bindings and strap bindings. With existing strap bindings, the user's foot cannot easily and directly enter the boot through the opening between the rear strap and the heel pad. A common approach is to design the front and rear straps with an adjustment clip, allowing for quick re-engagement after loosening. However, this structure requires loosening the front and rear straps separately each time the boot is put on, and then adjusting the tightness of the straps. This is inconvenient. Step-in bindings do not have this problem; the user can directly place the foot into the boot. Snowshoes are easy to slip on, but there are two types of existing step-in bindings. One type is one-piece, but this type can only be used with boots of the corresponding size, and the mechanism on the binding must match the mechanism on the boot, so its versatility is poor. The other type is two-piece, consisting of a toe piece and a heel piece, with an adjustable release mechanism. This requires the boot to be made rigid in certain parts to provide support for the foot and ankle, which can cause foot discomfort and make the skis less precise in their direction, thus limiting the application of step-in bindings. Summary of the Invention

[0004] The purpose of this invention is to provide a four-point positioning quick-wear ski binding, which has a simple appearance, facilitates the entry and exit of skis, eliminates the need for straps, and has a fixing part located at the bottom of the ski boot, so as not to affect the ski boot body and ski guidance, and provides a comfortable ski boot wearing experience.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a four-point positioning quick-wear ski binding device, comprising a fixing frame fixed to the ski and a fixing plate for fixing to the bottom of the ski boot, the fixing frame comprising a bottom plate, a heel and a side, the heel and the side forming a U-shaped structure, the bottom plate and the U-shaped structure together forming a ski boot receiving cavity;

[0006] Two front fixing parts are slidably connected to the base plate, and the two front fixing parts are symmetrically arranged on both sides of the base plate away from the heel. Two rear fixing parts are slidably connected to the base plate, and the two rear fixing parts are symmetrically arranged on both sides of the base plate near the heel. A front groove is formed between the front fixing part and the side of the fixing frame, and a rear groove is formed between the rear fixing part and the side of the fixing frame. The base plate is provided with a drive mechanism for driving the front fixing parts and the rear fixing parts to move.

[0007] The fixing plate has symmetrical front fixing parts on both sides away from the heel, and the front fixing parts can be embedded in the front slot. The fixing plate also has symmetrical rear fixing parts on both sides near the heel, and the rear fixing parts can be embedded in the rear slot.

[0008] By adopting the above technical solution, the ski binding consists of a binding frame fixed to the ski and a binding plate for fixing to the bottom of the ski boot. After the binding plate is fixedly connected to the binding frame, the ski boot can be fixed to the ski. The binding frame includes a bottom plate, a heel, and a side. The bottom plate, heel, and side together form a U-shaped ski boot cavity. The U-shaped cavity can be used for ski boots of different sizes, and has good versatility.

[0009] Two front fixing parts are slidably connected to the end of the base plate away from the heel, and two rear fixing parts are slidably connected to the end closer to the heel. The base plate is also equipped with a drive mechanism to move the front and rear fixing parts. The fixing plate is equipped with a front fixing engagement part and a rear fixing engagement part. When the front fixing engagement part is inserted into the front fixing part and the rear fixing engagement part is inserted into the rear fixing part, the fixing frame is fixedly connected to the fixing plate, and the ski boot can be fixedly connected to the ski. When the drive mechanism drives the front and rear fixing parts to move towards the heel, the front and rear fixing engagement parts can be unlocked from the front and rear fixing parts, the fixing frame can be separated from the fixing plate, and the ski boot can be removed from the ski.

[0010] A further configuration of the present invention is as follows: the front fixing part includes a front fixing plate, the upper end of the front fixing plate is provided with a forward protrusion on the side away from the heel, the side of the fixing frame is provided with a front fixing groove, the front fixing plate is slidably connected in the front fixing groove, and the upper end of the front fixing groove is provided with an opening;

[0011] When the driving mechanism drives the front protrusion to connect with the inner wall of the front fixing groove, the upper surface of the front protrusion will close the opening, and the lower surface of the front protrusion, the side of the front fixing plate away from the rear heel, and the inner wall of the front fixing groove will form a front slot.

[0012] When the driving mechanism drives the front fixing plate to approach the rear heel side and connect with the inner wall of the front slot, the opening is connected to the front slot.

[0013] A further feature of the present invention is that the rear fixing part includes a rear fixing plate, the upper end of the rear fixing plate is provided with a rear protrusion on the side away from the heel, the side of the fixing frame is provided with a rear fixing groove, the rear fixing plate is slidably connected in the rear fixing groove, and the upper end of the rear fixing groove is provided with an opening;

[0014] When the driving mechanism drives the rear protrusion to connect with the inner wall of the rear fixing groove, the upper surface of the rear protrusion will close the opening, and the lower surface of the rear protrusion, the side of the rear fixing plate away from the rear heel, and the inner wall of the rear fixing groove will form a rear retaining groove.

[0015] When the driving mechanism drives the fixing plate to approach the heel side and connect with the inner wall of the rear slot, the opening is connected to the rear slot.

[0016] By adopting the above technical solution, when the ski boots are fixed to the skis, the ski boots are stepped into the skis' mounting bracket. The front fixing part of the fixing plate on the bottom of the ski boots enters through the opening on the side of the mounting bracket. At this time, the drive mechanism drives the front fixing plate to move towards the heel side, so that the opening connects with the front slot. As the ski boots are stepped down, the front fixing part is inserted into the front slot from the opening. Then, the drive mechanism drives the front fixing plate to move away from the heel side, and the front protrusion on the front fixing plate closes the opening, fixing the front fixing part in the front slot. When taking off the ski boots, the drive mechanism drives the front fixing plate to move towards the heel, so that the opening opens, and the front fixing part can be removed from the front slot, separating the ski boots from the skis.

[0017] Similarly, the rear fixing part is driven by the drive mechanism to move the rear fixing plate back and forth, controlling the opening and closing of the upper opening of the rear fixing groove, thereby realizing the connection and separation of the rear fixing part and the rear retaining groove.

[0018] A further feature of the present invention is that the front fixing plate and the rear fixing plate located on the same side of the fixing frame are connected by a sliding plate, the sliding plate is slidably connected to the base plate, the sliding plate has a square hole in the middle, the driving mechanism includes a spring disposed in the square hole, one end of the spring is fixedly connected to the sliding plate, the other end is fixedly connected to the base plate, the elastic force of the spring drives the sliding plate to move away from the heel, and a pull rope is fixedly connected to the end of the sliding plate near the heel.

[0019] By adopting the above technical solution, the front fixed plate and the rear fixed plate located on the same side of the fixed frame are connected by a sliding plate. By driving the sliding plate to move, the front fixed plate and the rear fixed plate can be moved simultaneously. A square hole is opened in the middle of the sliding plate, and a spring is installed in the square hole. A pull rope is fixedly connected to the end of the sliding plate near the heel. Pulling the pull rope can drive the sliding plate to move in the direction of the heel, thereby driving the front fixed plate and the rear fixed plate to move in the direction of the heel. Releasing the pull rope and the spring drives the sliding plate to move the front fixed plate and the rear fixed plate away from the heel.

[0020] The spring is located in the middle of the sliding plate, which saves space and also applies the same driving force to the front and rear fixed plates.

[0021] A further feature of the present invention is that the pull rope is U-shaped, and a through hole is provided on the heel for the pull rope to pass through. The two ends of the pull rope pass through the through hole and are respectively connected to two sliding plates, and the middle part of the pull rope is located outside the heel.

[0022] By adopting the above technical solution, the pull rope is U-shaped, and both ends of the pull rope are connected to two sliding plates respectively. By pulling the middle of the pull rope, the two sliding plates can be moved at the same time, which is convenient to operate.

[0023] A further feature of the present invention is that: two sets of guide roller assemblies are provided on the heel, the two sets of guide roller assemblies are respectively located on both sides of the heel, and the guide roller assembly includes guide roller one and guide roller two which are fixedly rotated on the heel in a vertical direction, and guide roller one and guide roller two are respectively located on the front and rear sides of the pull rope.

[0024] By adopting the above technical solution, a guide roller assembly is provided on the heel, and the pull rope is sequentially wound around the first guide roller and the second guide roller. Under the action of the first guide roller and the second guide roller, the position of the pull rope can be limited to prevent the position of the pull rope from deviating. On the other hand, it can also guide the tension of the pull rope, so that the pull rope drives the sliding plate to move more smoothly.

[0025] A further feature of the present invention is that a support plate is fixedly connected to the base plate, and the sliding plate is slidably connected to the support plate.

[0026] By adopting the above technical solution, a support plate is fixedly connected to the base plate. The support plate can provide a smoother support surface for the sliding plate, making the drive mechanism run more stably.

[0027] A further configuration of the present invention is as follows: the upper surface of the front convex part is provided with a front inclined surface, the upper surface of the rear convex part is provided with a rear inclined surface, when the front fixed fitting part is in contact with the front inclined surface, the front fixed plate is driven to move in the rearward direction, and when the rear fixed fitting part is in contact with the rear inclined surface, the rear fixed plate is driven to move in the rearward direction.

[0028] By adopting the above technical solution, a front inclined surface is provided on the front convex part, and a rear inclined surface is provided on the rear convex part. By setting the inclined surfaces, when the front fixed fitting part is in contact with the front inclined surface, the front fixed plate is driven to move in the rear heel direction. When the rear fixed fitting part is in contact with the rear inclined surface, the rear fixed plate is driven to move in the rear heel direction. During the downward stepping of the ski boot, the front fixed fitting part and the rear fixed fitting part can drive the front fixed plate and the rear fixed plate to move in the rear heel direction. After the front fixed fitting part and the rear fixed fitting part are respectively embedded in the front slot and the rear slot, the front fixed fitting part separates from the front convex part, and the rear fixed fitting part separates from the rear convex part. The spring can then drive the front fixed plate and the rear fixed plate to close the opening, so that the front fixed fitting part and the rear fixed fitting part are respectively fixed in the front slot and the rear slot.

[0029] A further provision of the present invention is that when the fixing plate is in contact with the base plate, the top surface of the front fixing part is in contact with the bottom surface of the front protrusion, and the top surface of the rear fixing part is in contact with the bottom surface of the rear protrusion.

[0030] By adopting the above technical solution, the height of the front fixed fitting part is set so that it just connects with the bottom surface of the front protrusion, and the top surface of the rear fixed fitting part connects with the bottom surface of the rear protrusion. This allows the front and rear fixed fitting parts to fit tightly into the front and rear slots, making it less prone to loosening and allowing the skis to be easily controlled.

[0031] A further configuration of the present invention is as follows: the two front fixed mating parts are connected by a front connecting rod, the front connecting rod being fixedly connected to the end of the fixing plate away from the heel; the two rear fixed mating parts are connected by a rear connecting rod, the rear connecting rod being fixedly connected to the end of the fixing plate near the heel.

[0032] By adopting the above technical solution, the two front fixed mating parts are connected by the front connecting rod, and the two rear fixed mating parts are connected by the rear connecting rod, which can ensure that the force between the two corresponding fixed mating parts is uniform. The fixed mating parts are fixed to the fixed plate by the connecting rod, which can make the connection with the fixed plate more secure and prevent them from falling off.

[0033] The beneficial effects of this invention are:

[0034] 1. By setting four-point positioning, the two front fixing parts and the two rear fixing parts are all located on the side of the fixing frame, which is concealed and the appearance of the ski fixing frame is complete and simple. In the existing step-in binding, the fixing part of the ski boot has a pit, which is easy to accumulate snow and needs to be cleaned frequently. In this application, the front fixing mating part and the rear fixing mating part on the ski boot both protrude outside the ski boot and will not accumulate snow.

[0035] 2. In this invention, the front and rear fixing parts on the fixing plate engage with the front and rear fixing parts on the fixing frame under pressure, respectively. No manual adjustment is required; athletes simply step into the fixing frame wearing ski boots. The operation is simple, quick, and convenient. After engagement, the connection points combine to form a four-point positioning system. These four engagement points connect the ski boots to the sides of the fixing frame, restricting the ski boots' freedom of movement towards the ankle and the front of the foot, resulting in high stability. Simultaneously, the stress is concentrated on the sole of the boot, minimizing impact on the feet and ensuring good comfort.

[0036] 3. When securing the ski boots to the skis, step the ski boots into the ski frame. The front fixing part of the fixing plate on the bottom of the ski boot enters through the opening on the side of the frame. At this time, the drive mechanism drives the front fixing plate to move towards the heel, connecting the opening with the front locking slot. As the ski boot is stepped down, the front fixing part inserts into the front locking slot from the opening. Then, the drive mechanism drives the front fixing plate to move away from the heel, and the front protrusion on the front fixing plate closes the opening, securing the front fixing part in the front locking slot. When removing the ski boots, the drive mechanism drives the front fixing plate towards the heel, opening the opening, allowing the front fixing part to be removed from the front locking slot, separating the ski boots from the skis. The rear fixing part works similarly; the drive mechanism drives the rear fixing plate back and forth, controlling the opening and closing of the upper opening of the rear fixing slot, thereby connecting and separating the rear fixing part from the rear locking slot. The fixed mating part and the slot have a good engagement effect. The force driving the opening to close is in the horizontal direction. When skiing, the force between the fixed mating part and the slot is in the vertical direction. Therefore, skiing will not cause impact on the fixed relationship between the fixed mating part and the slot, and can ensure the stable connection between the fixed mating part and the slot.

[0037] 4. The front and rear fixed plates, located on the same side of the frame, are connected by a sliding plate. Moving the sliding plate moves both the front and rear fixed plates simultaneously. A square hole in the center of the sliding plate contains a spring. A pull rope is fixedly connected to the end of the sliding plate near the heel. Pulling the rope moves the sliding plate towards the heel, thus moving the front and rear fixed plates in the same direction. Releasing the rope causes the spring to move the sliding plate, which in turn moves the front and rear fixed plates away from the heel. After the ski boot is inserted into the frame and the front and rear fixed parts are engaged in their respective slots, the spring automatically returns the front and rear fixed plates to their original positions, securing them within the frame. No manual operation is required; simply pulling the rope connects the slots to the openings, allowing the ski boot to be lifted and separated from the skis. The operation is simple and quick.

[0038] 5. The front convex part has a front inclined surface, and the rear convex part has a rear inclined surface. By setting the inclined surfaces, when the front fixed fitting part is in contact with the front inclined surface, the front fixed plate is driven to move towards the rear heel. When the rear fixed fitting part is in contact with the rear inclined surface, the rear fixed plate is driven to move towards the rear heel. During the downward step of the ski boot, the front fixed fitting part and the rear fixed fitting part can drive the front fixed plate and the rear fixed plate to move towards the rear heel. After the front fixed fitting part and the rear fixed fitting part are respectively inserted into the front and rear slots, the front fixed fitting part separates from the front convex part, and the rear fixed fitting part separates from the rear convex part. The spring can then drive the front fixed plate and the rear fixed plate to close the opening, so that the front fixed fitting part and the rear fixed fitting part are fixed in the front and rear slots respectively. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of the present invention.

[0041] Figure 2 This is an exploded view of the present invention.

[0042] Figure 3 This is a schematic diagram of the drive unit structure.

[0043] Figure 4 This is a schematic diagram showing the connection relationship between the drive unit, the mounting bracket, and the mounting plate.

[0044] Figure 5 This is a schematic diagram of the fixed frame structure.

[0045] Figure 6 This is a schematic diagram showing the connection relationship between the front fixing part and the side part.

[0046] Figure 7 This is a schematic diagram showing the connection relationship between the front fixing part, the side part, and the front fixing mating part.

[0047] In the diagram, 1. Fixing frame; 111. Base plate; 112. Heel; 113. Side; 2. Fixing plate; 3. Front fixing part; 31. Front fixing plate; 32. Front protrusion; 33. Front slope; 4. Rear fixing part; 41. Rear fixing plate; 42. Rear protrusion; 43. Rear slope; 5. Front slot; 6. Rear slot; 8. Front fixing mating part; 9. Rear fixing mating part; 10. Front fixing groove; 11. Rear fixing groove; 12. Opening; 13. Sliding plate; 14. Square hole; 15. Spring; 16. Pull rope; 17. Guide roller one; 18. Guide roller two; 19. Support plate; 20. Front connecting rod; 21. Rear connecting rod. Detailed Implementation

[0048] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0049] Example: A four-point positioning quick-wear ski boot binding, such as Figure 1 As shown, it includes a fixing frame 1 fixed to the skis and a fixing plate 2 for fixing to the bottom of the ski boots. The fixing frame 1 includes a base plate 111, a heel 112 and a side 113. The heel 112 and the side 113 form a U-shaped structure. The base plate 111 and the U-shaped structure together form a ski boot receiving cavity.

[0050] like Figure 2 As shown, two front fixing parts 3 are slidably connected to the base plate 111. The two front fixing parts 3 are symmetrically arranged on both sides of the end of the base plate 111 away from the heel 112. Two rear fixing parts 4 are slidably connected to the base plate 111. The two rear fixing parts 4 are symmetrically arranged on both sides of the end of the base plate 111 near the heel 112. A front groove 5 is formed between the front fixing part 3 and the side part 113 of the fixing frame 1. A rear groove 6 is formed between the rear fixing part 4 and the side part 113 of the fixing frame 1. The base plate 111 is provided with a drive mechanism for driving the front fixing parts 3 and the rear fixing parts 4 to move.

[0051] like Figure 2 , Figure 3 As shown, front fixing parts 8 are symmetrically arranged on both sides of the fixing plate 2 away from the heel 112. The front fixing parts 8 can be embedded in the front slot 5. Rear fixing parts 9 are symmetrically arranged on both sides of the fixing plate 2 near the heel 112. The rear fixing parts 9 can be embedded in the rear slot 6.

[0052] like Figure 2 , Figure 3 As shown, the front fixing part 3 includes a front fixing plate 31. The upper end of the front fixing plate 31 is provided with a front protrusion 32 on the side away from the heel 112. The side part 113 of the fixing frame 1 is provided with a front fixing groove 10. The front fixing plate 31 is slidably connected in the front fixing groove 10. The upper end of the front fixing groove 10 is provided with an opening 12.

[0053] like Figure 3 , Figure 4 As shown, when the drive mechanism drives the front protrusion 32 to connect with the inner wall of the front fixing groove 10, the upper surface of the front protrusion 32 closes the opening 12, and the lower surface of the front protrusion 32, the side of the front fixing plate 31 away from the rear heel 112 and the inner wall of the front fixing groove 10 form the front slot 5.

[0054] like Figure 6 , Figure 7 As shown, when the drive mechanism drives the front fixing plate 31 to connect with the inner wall of the front slot 5 near the rear heel 112, the opening 12 is connected to the front slot 5.

[0055] like Figure 2 , Figure 3 As shown, the rear fixing part 4 includes a rear fixing plate 41. The upper end of the rear fixing plate 41 is provided with a rear protrusion 42 on the side away from the heel 112. The side part 113 of the fixing frame 1 is provided with a rear fixing groove 11. The rear fixing plate 41 is slidably connected in the rear fixing groove 11. The upper end of the rear fixing groove 11 is provided with an opening 12.

[0056] When the drive mechanism drives the rear protrusion 42 to contact the inner wall of the rear fixing groove 11, the upper surface of the rear protrusion 42 closes the opening 12, and the lower surface of the rear protrusion 42, the side of the rear fixing plate 41 away from the rear heel 112 and the inner wall of the rear fixing groove 11 form the rear slot 6.

[0057] When the drive mechanism drives the fixed plate 41 to connect with the inner wall of the rear slot 6 near the heel 112, the opening 12 is connected to the rear slot 6.

[0058] like Figure 3 , Figure 4 As shown, the front fixing plate 31 and the rear fixing plate 41, located on the same side of the fixing frame 1, are connected by a sliding plate 13. The sliding plate 13 is slidably connected to the base plate 111. A square hole 14 is provided in the middle of the sliding plate 13. The driving mechanism includes a spring 15 disposed in the square hole 14. One end of the spring 15 is fixedly connected to the sliding plate 13, and the other end is fixedly connected to the base plate 111. The elastic force of the spring 15 drives the sliding plate 13 to move away from the heel 112. A pull rope 16 is fixedly connected to the end of the sliding plate 13 near the heel 112.

[0059] like Figure 3 As shown, the pull rope 16 is U-shaped, and the heel 112 has a through hole for the pull rope 16 to pass through. The two ends of the pull rope 16 pass through the through hole and are connected to the two sliding plates 13 respectively. The middle part of the pull rope 16 is located outside the heel 112.

[0060] like Figure 3 As shown, the heel 112 is provided with two sets of guide roller assemblies. The two sets of guide roller assemblies are located on both sides of the heel 112. The guide roller assembly includes guide roller 17 and guide roller 28, which are fixed and rotated on the heel 112 in the vertical direction. Guide roller 17 and guide roller 28 are located on the front and rear sides of the pull rope 16, respectively.

[0061] like Figure 3 As shown, a support plate 19 is fixedly connected to the base plate 111, and a sliding plate 13 is slidably connected to the support plate 19.

[0062] like Figure 6 , Figure 7 As shown, the upper surface of the front protrusion 32 is provided with a front inclined surface 33, and the upper surface of the rear protrusion 42 is provided with a rear inclined surface 43. When the front fixed fitting part 8 is in contact with the front inclined surface 33, the front fixed plate 31 is driven to move in the direction of the rear heel 112. When the rear fixed fitting part 9 is in contact with the rear inclined surface 43, the rear fixed plate 41 is driven to move in the direction of the rear heel 112.

[0063] like Figure 7 As shown, when the fixing plate 2 is connected to the base plate 111, the top surface of the front fixing part 8 is connected to the bottom surface of the front protrusion 32, and the top surface of the rear fixing part 9 is connected to the bottom surface of the rear protrusion 42.

[0064] like Figure 2 As shown, the two front fixed mating parts 8 are connected by a front connecting rod 20, which is fixedly connected to the end of the fixing plate 2 away from the heel 112. The two rear fixed mating parts 9 are connected by a rear connecting rod 21, which is fixedly connected to the end of the fixing plate 2 near the heel 112.

[0065] Working principle of a four-point positioning quick-wear ski boot binding:

[0066] Before skiing, ski boots need to be secured to skis. Ski boots have a fixing plate 2 at the bottom and skis have a fixing frame 1. Athletes step into the ski boot cavity of the fixing frame 1 with the fixing plate 2 at the bottom of the ski boots to secure the ski boots to the skis.

[0067] The fixing frame 1 includes a base plate 111, a heel 112, and a side part 113. Two front fixing parts 3 and two rear fixing parts 4 are slidably connected to the base plate 111. The front fixing parts 3 include a front fixing plate 31, the bottom of which is slidably connected to the base plate 111, and the side of which is slidably connected to the front fixing groove 10 of the side part 113 of the fixing frame 1. The upper end of the front fixing groove 10 is provided with an opening 12, and the front fixing plate 31 is provided with a forward protrusion 32 on its side. The rear fixing parts 4 include a rear fixing plate 41, the bottom of which is slidably connected to the base plate 111, and the side of which is slidably connected to the rear fixing groove 11 of the side part 113 of the fixing frame 1. The upper end of the rear fixing groove 11 is provided with a front fixing plate 41. The opening 12 and the rear fixing plate 41 are provided with a rear protrusion 42 on the side; the fixing plate 2 at the bottom of the ski boot is provided with a front fixing engagement part 8 and a rear fixing engagement part 9. The bottom plate 111 is provided with a driving mechanism. The driving mechanism drives the front fixing plate 31 and the rear fixing plate 41 to move back and forth. When the front fixing plate 31 moves away from the heel 112, the front protrusion 32 closes the opening 12 of the front fixing groove 10 and fixes the front fixing engagement part 8 in the front slot 5 formed by the front fixing groove 10 and the front protrusion 32. The rear protrusion 42 closes the opening 12 of the rear fixing groove 11 and fixes the rear fixing engagement part 9 in the rear slot 6 formed by the rear fixing groove 11 and the front protrusion 32.

[0068] The front fixed plate 31 and the rear fixed plate 41 are connected by a sliding plate 13. The driving mechanism includes a spring 15 located in the middle of the sliding plate 13. The spring 15 drives the sliding plate 13 to move away from the heel 112. A pull rope 16 is connected to one end of the sliding plate 13 near the heel 112. The pull rope 16 pulls the sliding plate 13 to move towards the heel 112. The front fixed plate 31 and the rear fixed plate 41 can move back and forth through the spring 15 and the pull rope 16.

[0069] The front protrusion 32 is provided with a front inclined surface 33, and the rear protrusion 42 is provided with a rear inclined surface 43. By providing inclined surfaces, when the front fixed fitting part 8 is in contact with the front inclined surface 33, the front fixed plate 31 is driven to move towards the rear heel 112. When the rear fixed fitting part 9 is in contact with the rear inclined surface 43, the rear fixed plate 41 is driven to move towards the rear heel 112. During the downward stepping of the ski boot, the front fixed fitting part 8 and the rear fixed fitting part 9 can drive the front fixed plate 31 and the rear fixed plate 41 to move towards the rear heel 112. After the front fixed fitting part 8 and the rear fixed fitting part 9 are respectively embedded in the front slot 5 and the rear slot 6, the front fixed fitting part 8 separates from the front protrusion 32, and the rear fixed fitting part 9 separates from the rear protrusion 42. The spring 15 can then drive the front fixed plate 31 and the rear fixed plate 41 to close the opening 12, so that the front fixed fitting part 8 and the rear fixed fitting part 9 are respectively fixed in the front slot 5 and the rear slot 6.

Claims

1. A four-point positioning quick ski binding, comprising a fixing bracket (1) fixed on a ski and a fixing plate (2) for fixing at the bottom of a snow shoe, characterized in that: The fixing frame (1) includes a base plate (111), a heel (112) and a side (113), the heel (112) and the side (113) forming a U-shaped structure, and the base plate (111) and the U-shaped structure together form a snowshoe receiving cavity; Two front fixing parts (3) are slidably connected to the base plate (111). The two front fixing parts (3) are symmetrically arranged on both sides of the end of the base plate (111) away from the heel (112). Two rear fixing parts (4) are slidably connected to the base plate (111). The two rear fixing parts (4) are symmetrically arranged on both sides of the end of the base plate (111) near the heel (112). A front slot (5) is formed between the front fixing part (3) and the side part (113) of the fixing frame (1). A rear slot (6) is formed between the rear fixing part (4) and the side part (113) of the fixing frame (1). A driving mechanism for driving the front fixing part (3) and the rear fixing part (4) to move is provided on the base plate (111). The fixing plate (2) has symmetrical front fixing parts (8) on both sides away from the heel (112), and the front fixing parts (8) can be embedded in the front slot (5). The fixing plate (2) has symmetrical rear fixing parts (9) on both sides near the heel (112), and the rear fixing parts (9) can be embedded in the rear slot (6). The front fixing part (3) includes a front fixing plate (31). The upper end of the front fixing plate (31) is provided with a front protrusion (32) on the side away from the heel (112). The side (113) of the fixing frame (1) is provided with a front fixing groove (10). The front fixing plate (31) is slidably connected in the front fixing groove (10). The upper end of the front fixing groove (10) is provided with an opening (12). When the driving mechanism drives the front protrusion (32) to connect with the inner wall of the front fixing groove (10), the upper surface of the front protrusion (32) will close the opening (12), and the lower surface of the front protrusion (32), the side of the front fixing plate (31) away from the heel (112) and the inner wall of the front fixing groove (10) form a front slot (5). When the driving mechanism drives the front fixing plate (31) to contact the inner wall of the front slot (5) near the heel (112), the opening (12) is connected to the front slot (5); the rear fixing part (4) includes a rear fixing plate (41), the upper end of the rear fixing plate (41) is provided with a rear protrusion (42) away from the heel (112), the side (113) of the fixing frame (1) is provided with a rear fixing groove (11), the rear fixing plate (41) is slidably connected in the rear fixing groove (11), and the upper end of the rear fixing groove (11) is provided with an opening (12). When the driving mechanism drives the rear protrusion (42) to connect with the inner wall of the rear fixing groove (11), the upper surface of the rear protrusion (42) closes the opening (12), and the lower surface of the rear protrusion (42), the side of the rear fixing plate (41) away from the heel (112) and the inner wall of the rear fixing groove (11) form a rear slot (6). When the driving mechanism drives the rear fixing plate (41) to contact the inner wall of the rear slot (6) near the heel (112), the opening (12) is connected to the rear slot (6). The front fixing plate (31) and the rear fixing plate (41) located on the same side of the fixing frame (1) are connected by a sliding plate (13). The sliding plate (13) is slidably connected to the bottom plate (111). A square hole (14) is opened in the middle of the sliding plate (13). The driving mechanism includes a spring (15) set in the square hole (14). One end of the spring (15) is fixedly connected to the sliding plate (13), and the other end is fixedly connected to the bottom plate (111). The elastic force of the spring (15) drives the sliding plate (13) to move away from the heel (112). A pull rope (16) is fixedly connected to one end of the sliding plate (13) near the heel (112).

2. The four-point positioning quick-connect ski binding according to claim 1, characterized in that: The pull rope (16) is U-shaped, and the heel (112) has a through hole for the pull rope (16) to pass through. The two ends of the pull rope (16) pass through the through hole and are connected to two sliding plates (13) respectively. The middle part of the pull rope (16) is located outside the heel (112).

3. A four-point positioning quick-connect ski binding according to claim 1 or 2, characterized in that: Two sets of guide roller assemblies are provided on the heel (112). The two sets of guide roller assemblies are located on both sides of the heel (112). The guide roller assembly includes a guide roller one (17) and a guide roller two (18) that are fixed and rotated on the heel (112) in the vertical direction. The guide roller one (17) and the guide roller two (18) are located on the front and rear sides of the pull rope (16) respectively.

4. The four-point positioning quick-connect ski binding according to claim 1, characterized in that: A support plate (19) is fixedly connected to the base plate (111), and the sliding plate (13) is slidably connected to the support plate (19).

5. A four-point positioning quick-connect ski binding according to claim 1, characterized in that: The upper surface of the front protrusion (32) is provided with a front inclined surface (33), and the upper surface of the rear protrusion (42) is provided with a rear inclined surface (43). When the front fixed fitting part (8) is in contact with the front inclined surface (33), the front fixed plate (31) is driven to move in the direction of the rear heel (112). When the rear fixed fitting part (9) is in contact with the rear inclined surface (43), the rear fixed plate (41) is driven to move in the direction of the rear heel (112).

6. A four-point positioning quick-connect ski binding according to claim 1, characterized in that: When the fixing plate (2) is connected to the base plate (111), the top surface of the front fixing part (8) is connected to the bottom surface of the front protrusion (32), and the top surface of the rear fixing part (9) is connected to the bottom surface of the rear protrusion (42).

7. A four-point positioning quick-connect ski binding according to claim 1, characterized in that: The two front fixed mating parts (8) are connected by a front connecting rod (20), which is fixedly connected to the end of the fixing plate (2) away from the heel (112). The two rear fixed mating parts (9) are connected by a rear connecting rod (21), which is fixedly connected to the end of the fixing plate (2) near the heel (112).

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