Patent Grant
11633002
The present invention relates to an outdoor sports article and in particular to a frame of a snowshoe and a snowshoe thereof.
Snowshoes, also referred to as snow paws, bear's paw shoes, snowboards or snow straps, are shoes for walking on the snow. By distributing the weight of a human body in a larger area, the snowshoes can prevent feet from completely falling into the snow. Conventional snowshoes have a hardwood frame which is woven with rawhide tapes, so these snowshoes are heavy and easy to fall off. Majority of the existing snowshoes have a light metal frame. However, other snowshoes have a frame which is composed of a whole piece of plastics and bands, and such snowshoes are relatively light, but are low in skid resistance and easy to cause a fall when people walk on the snow.
Chinese Patent CN203897452U (Patent No.:201320724866.8), has disclosed a pair of snowshoes, wherein each shoe comprises a frame and a covering mask tightened on the frame; the frame has a band-shaped sidewall which surrounds and is oriented transversely to a horizontal line; the frame has a supporting surface which is arranged circumferentially and used for fixing the covering mask; and, the supporting surface and the sidewall are designed integrally. The frame, the sidewall and the supporting surface are formed by single band-shaped material pieces or sheet-shaped material pieces by folding edges of the band-shaped material pieces or sheet-shaped material pieces. Therefore, the frame is relatively heavy, inconvenient to carry and use, and high in the cost of raw materials. The frame having the same weight has low strength and support force, and the sidewall has insufficient capability of breaking ice and snow. Moreover, it is difficult to fix the frame to the vamp, and special connecting pieces are usually required, so that mounting is complicated and it is disadvantageous for the fixation of the vamp. Further, since the cross section of the frame substantially remains unchanged, the frame cannot be changed with the thickness of the ice layer, and the stability of the frame cannot be adjusted properly. Similar problems also exist in Chinese Patent CN1761505A (Patent No.:200480003338.7), titled FRAME AND BINDING FOR A SNOWSHOE AND RELATED SYSTEMS AND METHODS.
In addition, Chinese Patent CN204812314U (Patent No.:201520468253.1), has disclosed a snowshoe, comprising a snowshoe body which is mainly spliced by a front shoe body made of a plastic material and a rear frame made of a metal material, wherein the front shoe body and the rear frame are fixed and connected by more than one connecting piece. Since the snowshoe body is spliced by a front shoe body made of a plastic material and a rear frame made of a metal material in this utility model, it is avoided that the whole snowshoe body is made of all-aluminum alloy, and it is beneficial to reduce the production cost. Meanwhile, since the rear frame of the snowshoe body is made of a metal material, the grade of the snowshoe provided by this utility model can be improved. However, the disadvantage is that conventional pipes with a circular cross section are used. Although the weight is reduced and the strength of this frame is enhanced in comparison to the previous frames, since the cross section is circular, it is very difficult to mount and fix the vamp on the frame with the circular cross section, and connecting pieces are usually required, so that manufacturing is complicated and it is disadvantageous for the fixation of the vamp. Further, it is also difficult to fix and mount lateral teeth on the frame, and the firmness is low. In addition, the snowshoe has unsatisfactory capability for breaking ice and snow. Therefore, the snowshoe needs to be improved in structure.
It is a first object of the present invention to provide a frame of a snowshoe, which is simple and reasonable in structure, low in drag fraction, high in ground grip, improved in snow riding stability and convenient for mounting and fixing a vamp and lateral teeth.
It is a second object of the present invention to provide a snowshoe, which is simple and reasonable in structure, low in drag fraction, high in ground grip, improved in snow treading stability and convenient for mounting and fixing a vamp and lateral teeth.
For achieving the first object, the frame of a snowshoe comprises an annular frame with a front end, a middle portion and a rear portion with a rear end, wherein the annular frame is made from a metal pipe with a triangular cross-section, the front end of the annular frame is upturned, the middle portion of the annular frame is substantially horizontal, and the rear portion of the annular frame is horizontal or upturned; the annular frame has a top surface for mounting a vamp; the annular frame has a bottom surface with a sharp downward angle, and a plurality of lateral teeth for anti-skid effect are mounted on the bottom surface of the frame.
Preferably, the annular frame has a structure selected from one of following eight options, the frame has an opening at the rear end of the annular frame, and a rear connecting piece with a top surface is inserted partially into the opening on the rear end of the frame, so that one metal pipe having a triangular cross-section forms the annular frame; the annular frame has an opening at the rear end, and a welding rod is connected the rear end at the opening to form the annular frame, so that one metal pipe having a triangular cross-section forms the annular frame; two metal pipes having a triangular cross-section respectively being located left and right, the two metal pipes are connected with each other by two connecting pipes located at the front end and the rear end of the frame, so as to form the annular frame; two metal pipes having a triangular cross-section respectively being located left and right, the two metal pipes are connected with each other by a front connecting piece and a rear connecting piece respectively located at the front end and the rear end of the frame, so as to form the annular frame; two metal pipes having a triangular cross-section respectively being located left and right, the two metal pipes are connected with each other by welding at the front end and by a rear connecting piece at the rear end, so as to form an annular frame; two metal pipes having a triangular cross-section respectively being located front and rear, the two metal pipes are connected with each other by two connecting pipes located at the left and right of the frame, so as to form the annular frame; two metal pipes having a triangular cross-section respectively being located front and rear, the two metal pipes are connected with each other by a left connecting piece and a right connecting piece, so as to form the annular frame; two metal pipes having a triangular cross-section respectively being located front and rear, the two metal pipes are connected with each other by welding, so as to form the annular frame.
Preferably, the rear connecting piece is V-shaped or U-shaped, and the rear connecting piece is connected to the opening of the frame by inserting, screwing, riveting or welding to form the annular frame.
Preferably, the rear connecting piece has two insertion portions matched with triangular cross-section of the metal pipe, the insertion portions inserting into two free ends of the metal pipe; and the rear connecting piece has a connecting portion at the top surface of the rear connecting piece which is riveted or screwed to the rear end of the vamp.
Preferably, the cross-section of the metal pipe is an isosceles triangle or a right triangle; when the cross-section is an isosceles triangle with a base line and a vertex angle, the base line is defined as the top surface of the frame, the vertex angle is defined as the bottom surface of the frame, and the lateral teeth are disposed on the vertex angle or connected integrally to the vertex angle; when the cross-section is a right angle with two right-angle sides and an acute angle, one right-angle side is defined as the top surface of the frame, the acute angle adjacent to another right-angle side is defined as the bottom surface of the frame, and this right-angle side is defined as an inner surface of the frame, and the lateral teeth are disposed on the inner surface of the frame, or this right-angle side is extended downward to form the lateral teeth integrated with the frame.
Preferably, the lateral teeth are disposed between the middle portion and the rear end of the frame, and the lateral teeth are connected to the frame by screwing, riveting, welding or integral molding.
Preferably, a rear tooth piece is further disposed on the frame, the rear tooth piece comprises a transverse metal plate having a plurality of rear teeth disposed on the bottom of the transverse metal plate; the transverse metal plate has two side flanges extending from the left and right sides of the transverse metal plate, and the side flanges are connected to an inner wall of the frame by screwing, riveting or welding.
Preferably, the lateral teeth comprises two symmetrical first lateral teeth, a metal plate with an upper portion, and two symmetrical second lateral teeth located at the rear of the two first lateral teeth; the upper portion of the metal plate is folded inward or directly aligned with the bottom of the frame, and the two second lateral teeth are disposed on the bottom of the metal plate; and, the two second lateral teeth are connected to the rear tooth piece, the top of the side flanges of the rear tooth piece are folded inward or directly aligned with the bottom of the frame, and the rear tooth piece has a plurality of rear teeth on the bottom of the rear tooth piece.
For achieving the second object, the snowshoe comprises the annular frame, the vamp and an upper.
Preferably, the vamp is connected to the top surface of the frame by riveting or screwing; the vamp is made of a combination of a hard plastic soleplate and a soft plastic face plate or other materials such as a kayak mask; a heel pedal is connected to the rear of the vamp by riveting or screwing, and a lifting device is disposed on the heel pedal.
Preferably, the lifting device comprises a support rod, the support rod is a U-shaped metal rod with left and right downward bent sides, a rear cross rod of the support rod is a corrugated cross rod; the heel pedal is disposed on the vamp, a plurality of positioning slots for receiving and positioning two ends of the support rod are disposed on the vamp on left and right sides of the heel pedal; and the two ends of the support rod passes downward through the positioning slots and is rotatably connected directly or indirectly to the rear tooth piece that is transversely fixed on the frame.
Preferably, a U-shaped metal plate used as a connecting plate is connected to the rear of the rear tooth piece by riveting, screwing or welding, a plurality of shaft holes are disposed on left and right sides of the connecting plate; a plurality of end portions of the bent ends on the left and right sides of the support rod are bent inward forming a plurality of connecting short shafts in fit with the shaft holes and is capable of rotating, and the support rod passes through the shaft holes by using the connecting short shafts on both sides and is rotatably connected to the connecting plate.
Preferably, the heel pedal is a plastic piece, the heel pedal is integrated with the vamp, or the heel pedal is connected to the vamp by riveting, screwing or welding, and a plurality of convex strips convenient for pedaling are formed on the top surface of the heel pedal.
Preferably, a front tooth piece is further disposed on the frame, a hollow portion is disposed at a position on the vamp corresponding to the front tooth piece, a surface of the front tooth piece is connected to the bottom of the front end of the upper by riveting or screwing; a main body of the front tooth piece is a metal plate, front and rear sides of the metal plate are bent and pressed to form a plurality of first front teeth and a plurality of second front teeth, respectively; a mounting sleeve hole is disposed between the front tooth piece and the bottom of the upper, a metal cross rod is further provided, and a shaft sleeve is sheathed in the middle of the metal cross rod; and a plurality of shaft holes are disposed on the overlaps of the lateral teeth and the frame, and the front tooth piece is rotatably connected to the frame through the shaft sleeve and the metal cross rod.
Preferably, the upper has a band with a pedaling portion, bands and a buckle; the pedaling portion is disposed at a position on the bottom of the upper corresponding to the front of the vamp, a stopper for preventing the shoe from moving forward is convexly disposed in the middle of the front end of the pedaling portion, and a first perforated piece is disposed on the stopper; a plurality of left and right vamp connecting sheets are respectively disposed on the left and right sides of the front of the pedaling portion, and a plurality of left and right heel tape connecting sheets are disposed on left and right sides of the rear of the pedaling portion; a left heel tape and a right heel tape are connected to the rear end of the pedaling portion, a second perforated piece and a third perforated piece are respectively disposed on the vamp connecting sheet and the left heel tape on the inner side of the pedaling portion, and a plurality of front and rear buckles capable of locking or releasing the bands are respectively disposed on the vamp connecting sheet and the right heel tape on the outer side of the pedaling portion; there are two bands, one end of the first band is connected to the vamp connecting sheet on the outer side of the pedaling portion, while the other end thereof passes forward through the first perforated piece on the stopper, then turns backward to pass through the second perforated piece on the vamp connecting sheet on the inner side and turns outward to pass through the front buckle for locking; one end of the second band is connected to the third perforated piece on the left heel tape on the inner side of the pedaling portion, while the other end thereof passes outward through the rear buckle for locking; the two bands are connected together by passing through the buckles to form a handle, and a pull rope capable of releasing or locking the two bands is connected between the two buckles.
Preferably, each of the buckles comprises a buckle body and a press plate, a recess is disposed at an upper end of the buckle body, a baffle is transversely disposed at an upper end of the recess, and a plurality of shaft holes are symmetrically disposed in middle portions of two sides of the recess; a lower end of the press plate is a connecting portion rotatably connected to the buckle body, a plurality of through holes corresponding to the shaft holes are transversely disposed on the connecting portion, the lower end of the press plate is rotatably connected to the buckle body through a connecting shaft sheathed with a torsion spring; the bands passes through the baffle from the inner side of the connecting portion of the press plate and then extends out of the buckle body from the other side of the baffle; a toothed structure resisted against the bands is transversely and convexly disposed on an inner side of the connecting portion, a connecting hole is disposed at an upper end of the press plate; two ends of the pull rope are respectively connected to the upper ends of the press plates of the two buckles, and the press plates are driven to rotate by pulling the pull rope, so that the toothed structure is resisted against or loosened from the bands.
Preferably, the connecting hole is transversely disposed in the middle of the upper end of the press plate, and the connecting portion at the lower end of the press plate is cam-shaped, the outer side face thereof is a smooth cambered surface, and the toothed structure on its inner surface is a plurality of strip-shaped convex teeth disposed transversely at intervals.
Preferably, the pedaling portion is a plastic piece, and the left heel tape and the right heel tape are connected to the rear end of the pedaling portion; the front end of the left heel tape in the inner side passes through a positioning opening on the heel connecting sheet of the pedaling portion, so that the front end is fixedly connected to the second band; a rivet hole is disposed at the lower end of the buckle body of each buckle, the front buckle is riveted and connected to the corresponding vamp connecting sheet on the outer side, and the front end of the right heel tape on the outer side is riveted and connected to the heel connecting sheet on the outer side, and the lower end of the rear buckle is riveted and connected to the front end of the right heel tape on the outer side.
Preferably, a plurality of positioning buckles are disposed on the left heel tape, a plurality of positioning holes are disposed on the right heel tape, and the left heel tape and the right heel tape are connected together in an elastic and adjustable manner by fitting the positioning buckles with the positioning holes; or a plurality of positioning holes are disposed on the left heel tape, and a plurality of positioning holes are disposed on the right heel tape, and the left heel tape and the right heel tape are connected together in an elastic and adjustable manner by fitting the positioning buckles with the positioning holes.
Preferably, a plurality of clasps or rivets matched with each other are respectively disposed at the free ends of the first band and the second band, and the two bands passes through the buckles and are connected together by the clasps or rivets or by sewing.
Compared with the prior art, the present invention has the following advantages.
1. The frame is made from a metal pipe with a triangular cross-section, so it has light weight and high strength. The top surface of the frame is a mounting surface, and the vamp is fixed on the top surface of the frame by rivets or screws, so it is easy to mount and it is firm and stable. Since the annular frame has a bottom surface with a sharp downward angle, the contact area with the ground is small, and the drag friction is low. The triangular cross-section metal pipe is convenient for the mounting and fixation of teeth, and can be connected directly by riveting, screwing or welding without any connecting piece. Moreover, in snow layers with different hardness, the depth of the frame cutting into the snow layer will be different, so that the cutting depth can be self-adjusted to a certain extent, and the snow riding stability is improved.
2. Due to the arrangement of the lateral teeth, the front tooth piece and the rear tooth piece on the bottom of the frame, the anti-skid effect when walking on the snow is increased, and it is difficult to fall. Moreover, the lateral tooth pieces, the front tooth piece and the rear tooth piece improve the strength of the frame so as to realize higher firmness and stability.
3. The lifting device is a support rod, and positioning slots are disposed on the vamp, so the support rod can be rapidly positioned in a lifted state, and it is convenient for manufacturing. The heel pedal may be integrated with the vamp or riveted to the vamp. The heel pedal can serve as a heel pad when walking on the flat ground, and serve as a positioning frame for the support rod when climbing.
4. The first perforated piece of the stopper is disposed at the front end of the pedaling portion. After the shoes are put on, the insteps can be tightened, and the front ends of the feet can be limited to avoid loosening. The front and rear perforated pieces are disposed in the inner side of the pedaling portion, two buckles are disposed on the outer side of the pedaling portion, and two bands are provided, so it is simpler to thread the bands and it is more convenient to put on the shoes. After the shoes are put on, the bands can be tightened by pulling the handle, and the bands can be quickly loosened by pulling the pull rope, so that it is very convenient to take off the shoes. Since the pedaling portion is fixed on the top surface of the front teeth, the acting force on the front teeth is increased, the ground grip and anti-skid effect when walking on the snow are improved, and it is not easy to fall.
The present invention is simple and reasonable in structure, light in weight, easy to carry, high in strength, and firm and stable to mount. Due to the arrangement of the lifting device, the heel can be lifted when climbing, so that muscle stretch can be reduced when climbing, and high strength and firm and stable positioning are realized. The bands can be operated more convenient and quickly, so it is convenient to quickly put on or take off the shoes. The requirements of lightweight, safety and skid resistance when walking on the snow can be satisfied, and it is convenient for climbing, so that it is suitable for people who like snow sports.
The present invention will be further described in detail by embodiments with reference to the accompanying drawings.
The annular frame 1 has a rear connecting piece 2. As shown in
The head of the annular frame 1 is bent upward at 15° to 45°, the middle portion of the annular frame 1 is substantially horizontal, and the rear of the frame 1 is bent upward at 5° to 30°. Moreover, the head of the annular frame 1 has a width greater than that of its rear portion, and the middle portion thereof is gradually tapered. The rear connecting piece 2 is V-shaped or U-shaped. The cross-section shape of the rear connecting piece 2 is substantially the same as that of the metal pipe, so that their adjacent parts can basically realize smooth transition. The rear connecting piece 2 is connected to the opening 11 of the frame 1 by inserting, screwing, riveting or welding. In this embodiment, the insertion connection is employed. Therefore, in this embodiment, the rear connecting piece 2 has two insertion portions 21 matched with triangular cross-section of the metal pipe, the insertion portions 21 inserting into two free ends of the metal pipe; and the rear connecting piece 2 has a connecting portion 22 at the top surface of the rear connecting piece 2 which is riveted or screwed to the rear end of the vamp 6. The cross-section of the metal pipe with a triangular cross-section is preferably an isosceles triangle or a right triangle, and there is a certain circular arc transition at the tips, avoiding getting injured. In this embodiment, when a metal pipe with a right triangular cross-section is used, as shown in
As shown in
As shown in
In this way, the lateral teeth 3, the front tooth piece 9 and the rear tooth piece 8 play a safe and anti-skid role, so that it is not easy to fall when walking on the snow. Moreover, the lateral teeth 3 improve the mounting strength of the frame 1 and the metal cross rod 4, and the rear tooth piece 8 improves the strength of the frame 1. Of course, the annular frame 1 is not limited to the one-section structure made of a metal pipe with a triangular cross-section. The annular frame 1 may also be a two-section structure formed by welding or splicing left and right sections or front and rear sections, and a metal cross rod 4 is connected between the left and right sections of the frame 1 to strengthen the structure.
The vamp 6 is connected to the top surface 13 of the frame 1 by riveting; the vamp 6 is made of a hard plastic soleplate and a soft plastic face plate, a heel pedal 7 is connected to the rear of the vamp 6 by riveting, and a lifting device 10 is disposed on the heel pedal 7. The upper 5 comprises an upper body. Components such as a plurality of heel tapes 55 and 56, a plurality of bands 51 and 52 and a plurality of buckles 53 are disposed on the upper body of the upper 5.
As shown in
The upper 5 has a band with the pedaling portion 50, the bands 51, 52 and the buckle 53, the pedaling portion 50 is disposed at a position on the bottom of the upper 5 corresponding to the front of the vamp 6. The pedaling portion 50 is a plastic piece.
As shown in
As shown in
During mounting, the front lateral tooth 3 is firstly mounted in the frame 1, and the front tooth piece 9 is riveted to the bottom of the front end of the upper 5. During fixation, the metal cross rod 4 and the shaft sleeve 41 are mounted firstly and then rotatably connected to the frame 1 by the mounting sleeve hole. Then, the rear connecting piece 2 is fixed to the frame 1 by insertion, and the rear tooth piece 8 is mounted on the frame 1. The vamp 6 is fixed to the frame 1 by rivets, and the heel pedal 7 and the lifting device 10 are mounted on the vamp 6.
When in use, the shoe is placed on the vamp 6, the sole of the foot falls on the pedaling portion 50, and the heel falls on the heel pedal 7 of the vamp 6. The left heel tape 55 and the right heel tape 56 are fastened and fixed, and the handle 500 formed by connecting the first and second bands 51, 52 are pulled, so that the shoe can be locked and walking on the snow can be realized. Since the frame 1 is made of a metal pipe having a triangular cross-section, it has light weight and high strength. Moreover, the contact area with the ground is small, the drag friction is low, it is easy to walk, and it is convenient to first various tooth pieces and mount the vamp 6. Firm and stable fixation is achieved, and it is not easy to loosen. Further, due to the arrangement of the lateral teeth 3, the front tooth piece 9 and the rear tooth piece 8, the anti-skid effect is better, it is not easy to fall, it is safer for waling, the whole frame is high in strength and not easy to deform, and the service life of the snowshoe is prolonged. When it is necessary to take off the shoe, the pull rope 54 is pulled so that the first and second bands 51 and 52 are loosened naturally, and it is convenient to take off.
As shown in
As shown in
Of course, it is not limited that the front and rear sections are connected by welding. The middle connecting portions of the front and rear sections may be connected by lining pipes to form an annular frame; or, the middle connecting portions of the front and rear sections may be connected by intermediate connecting pieces and screws to form an annular frame.
As shown in
As shown in
The protection scope of the present invention is not limited to each embodiments described in this description. Any changes and replacements made on the basis of the scope of the present invention patent and of the description shall be included in the scope of the present invention patent.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010372309.9 | May 2020 | CN | national |
| 202010372319.2 | May 2020 | CN | national |
| 202010372712.1 | May 2020 | CN | national |
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| 20210345723 A1 | Nov 2021 | US |
