Foldable pulley device, sole and shoe

Abstract

The invention relates to a foldable pulley device, a sole and a shoe. The foldable pulley device comprises a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat, the linkage mechanism comprises a front wheel frame, a rear wheel frame, a tension spring and a linkage frame, the linkage frame is composed of a connecting plate and a movable arm, the front end and the rear end of the pulley seat are provided with fixed rotating shafts connecting the front wheel frame and the rear wheel frame respectively, and the front end and the rear end of the linkage arm are provided with movable rotating shafts connecting the front wheel frame and the rear wheel frame respectively. The outer wall of the pulley seat is provided with an arc-shaped hole for limiting the movable rotating shaft from rotating around the fixed rotating shaft; the locking mechanism comprises a sliding block, a pressure spring, a locking rod and a control rod, the pulley seat is provided with a limiting hole for limiting the lifting movement of the locking rod, and the sliding block is provided with a guide hole for promoting the lifting movement of the locking rod along the limiting hole. The linkage frame of the pulley device is integrally formed by the connecting plate and the linkage arms, the two linkage arms can synchronously drive the rotating shaft to swing, synchronous folding or unfolding of the front wheel frame and the rear wheel frame can be achieved, the operation steps are simple, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of roller skates, in particular to a foldable pulley device, a sole and a shoe. Background Art

[0002] The bottom of the running shoes is simply equipped with pulleys, which can be used for both normal walking and rolling and sliding, and are suitable for people who are constantly pursuing sports that are both stimulating and entertaining. It is inconvenient to disassemble and assemble the pulley assembly of traditional running shoes. It requires the help of disassembly tools to complete the task. It is time-consuming and laborious to find tools, and the operation is quite cumbersome. In addition, the pulley is easy to lose after disassembly, which is inconvenient to use. In addition, frequent disassembly and assembly of the pulley assembly can easily cause deformation and wear of the card slot, resulting in loose pulley shafts, and there is a safety hazard that the pulley falls off and causes the wearer to fall. Summary of the invention

[0003] The invention provides a foldable pulley device, a sole and a shoe, so as to overcome the problems of traditional running shoes, such as troublesome tools, time-consuming and labor-intensive, and potential safety hazards of pulley falling off.

[0004] The present invention adopts the following technical solution:

[0005] A foldable pulley device comprises a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat, wherein a receiving groove is provided in the pulley seat, and a notch of the receiving groove is detachably connected with an upper cover;

[0006] The linkage mechanism comprises a front wheel frame, a rear wheel frame, a tension spring and a linkage frame, the linkage frame is installed in the accommodating groove, the linkage frame is composed of a connecting plate and linkage arms arranged in parallel at both ends of the connecting plate, the front and rear ends of the pulley seat are respectively provided with a fixed rotating shaft connecting the front wheel frame and the rear wheel frame, the front and rear ends of the linkage arm are respectively provided with a movable rotating shaft connecting the front wheel frame and the rear wheel frame, the outer wall of the pulley seat is provided with an arc hole for limiting the rotation of the movable rotating shaft around the fixed rotating shaft, the connecting plate is connected to the fixed rotating shaft at the front end of the pulley seat through a tension spring, the bottom of the accommodating groove is provided with a strip hole corresponding to the linkage arm, and the bottom of the front wheel frame and the rear wheel frame are connected to the pulley assembly;

[0007] The locking mechanism includes a slider, a compression spring, a locking rod and a control rod. A limiting piece is arranged in the middle of the bottom of the accommodating groove. The slider is installed at the rear end of the accommodating groove. The compression spring is installed between the slider and the limiting piece. The pulley seat is provided with a limiting hole for limiting the lifting and lowering movement of the locking rod. The slider is provided with a guide hole for prompting the locking rod to lift and lower along the limiting hole. The locking rod synchronously passes through the limiting hole and the guide hole. The side edge of the rear wheel frame is provided with a closing snap-in for cooperating with the locking rod to fold the pulley group and the upper edge is provided with an unfolding snap-in for cooperating with the locking rod to unfold the pulley group. A U-shaped hole is arranged on the rear side wall of the pulley seat. The control rod is inserted into the U-shaped hole until its inner end abuts against the slider.

[0008] As a further improvement, a guide groove extending in the front-rear direction is provided on the top of the sliding block, and a convex ridge fitting into the guide groove is provided on the bottom surface of the upper cover.

[0009] As a further improvement, a groove is provided in the middle of the lower end of the pulley seat. When folding, the front wheel frame and the rear wheel frame swing toward each other until the pulley assembly falls into the groove, and the locking rod is clamped with the folding bayonet.

[0010] As a further improvement, the front wheel frame is composed of two front wheel brackets, and the front wheel brackets are respectively connected to the left and right ends of the fixed shaft.

[0011] As a further improvement, the rear wheel frame is composed of two rear wheel brackets, and the rear wheel brackets are respectively connected to the left and right ends of the fixed shaft.

[0012] As a further improvement, the pulley assembly is composed of a shaft and pulleys rotatably connected to both ends of the shaft.

[0013] As a further improvement, the control rod is sleeved with a return spring to force it to extend outward.

[0014] As a further improvement, the above-mentioned limiting member is provided with a screw hole groove, and the above-mentioned upper cover is connected to the pulley seat by inserting screws into the screw hole groove.

[0015] As a further improvement, the bottom of the rear end of the accommodating groove is provided with an opening, and a lower cover is installed at the opening.

[0016] As a further improvement, the pulley assembly is composed of a shaft and pulleys connected to both ends of the shaft.

[0017] A shoe sole comprises a shoe sole body. The bottom of the shoe sole body is provided with a mounting groove, and the foldable pulley device is installed in the mounting groove.

[0018] A shoe comprises an upper and the above-mentioned sole, wherein the upper is bonded to the top of the sole.

[0019] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0020] 1. The linkage frame of the pulley device of the present application is composed of a connecting plate and two parallel linkage arms. The connecting plate and the linkage arms are connected and formed as one piece. The two linkage arms can synchronously drive the above-mentioned movable shaft to swing, the left and right pulleys are coordinated, and the structural stability is good.

[0021] 2. The linkage frame of the pulley device of the present application cooperates with the front wheel frame and the rear wheel frame. The outer wall of the pulley seat is provided with an arc hole for limiting the rotation of the movable shaft around the fixed shaft, which can realize the synchronous folding or unfolding of the front wheel frame and the rear wheel frame.

[0022] 3. The linkage frame of the pulley device of the present application is provided with a connecting plate, and the connecting plate and the fixed shaft are provided with a tension spring, and the force of the tension spring to restore the deformation causes the front wheel frame and the rear wheel frame to unfold in the back, which is simple and convenient to operate.

[0023] 4. The pulley seat of the present application is provided with a limiting hole for limiting the lifting and lowering movement of the locking rod, and the slider is provided with a guide hole for prompting the locking rod to move up and down along the limiting hole. The compression spring is installed between the slider and the limiting member. The compression spring restores its deformation to prompt the slider to slide backward, prompting the locking rod to slide downward along the limiting hole to the above-mentioned latch. The front wheel frame and the rear wheel frame are firmly and stably opened or closed, and the locking rod is not easy to get unstuck due to the jumping of the shoes, so it is safe and reliable to wear.

[0024] 5. The top of the slider of the present application is provided with a guide groove extending in the front-to-back direction, and the bottom surface of the upper cover is provided with a convex ridge that fits into the guide groove. Through the cooperation between the convex ridge and the guide groove, the slider is not easy to shake in the accommodating groove, the compression spring can accurately and effectively drive the slider to slide, and the structural design is reasonable.

[0025] 6. The top surface of the slider of the locking mechanism of the present application is provided with two parallel guide grooves, and the bottom surface of the upper cover is provided with convex ridges corresponding to the guide grooves one by one. Through the cooperation of the convex ridges and the guide grooves, the slider is restricted from sliding back and forth in a straight line along the front and rear directions of the pulley seat, which greatly reduces the space occupied by accessories. The height of the pulley device is low, thereby reducing the thickness of the sole, making the sole lighter and more comfortable to wear.

[0026] 7. The control rod of the present application is sleeved with a return spring, which is located between the control rod and the inner wall of the U-shaped hole. The return spring restores its deformation to cause the control rod to automatically extend outward, making it easy for the hand to pinch the control rod and push the slider to slide again. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the pulley device of the present invention.

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the pulley device of the present invention with the upper cover opened.

[0029] Figure 3 It is an exploded schematic diagram of the pulley device of the present invention.

[0030] Figure 4 It is a schematic side view of the structure of the pulley device of the present invention when it is unfolded.

[0031] Figure 5 It is a side view structural schematic diagram of the pulley device of the present invention when it is folded.

[0032] Figure 6 It is a schematic diagram of the top view of the pulley device of the present invention.

[0033] Figure 7It is a bottom view structural schematic diagram of the pulley device of the present invention.

[0034] Figure 8 It is a three-dimensional structural schematic diagram of the linkage mechanism and the pulley assembly of the present invention.

[0035] Fig. 9 The pulley device of the present invention is along Figure 6 Schematic diagram of the cross-sectional structure along the DD direction.

[0036] in:

[0037] Pulley seat 1; accommodating groove 10; upper cover 11; fixed rotating shaft 12; movable rotating shaft 13; groove 14; limiting member 15; lower cover 16; limiting hole 101; arc hole 102; strip hole 103; U-shaped hole 104; convex ridge 111; front wheel frame 2; rear wheel frame 3; folding bayonet 31; unfolding bayonet 32; locking rod 33; slider 4; guide hole 40; guide groove 41; compression spring 42; control rod 43; reset spring 431; linkage frame 5; linkage arm 51; connecting plate 52; tension spring 53; shaft rod 6; pulley 61. DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0039] Reference Figure 1-Figure 3 A foldable pulley device includes a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat 1. A accommodating groove 10 is provided in the pulley seat 1. The notch of the accommodating groove 10 is detachably connected with an upper cover 11; the upper cover 11 is connected to the pulley seat 1 by screws, which is convenient for maintenance of accessories in the pulley seat 1.

[0040] Reference Figure 2 , Figure 3 and Fig. 9The linkage mechanism includes a front wheel frame 2, a rear wheel frame 3, a tension spring 53 and a linkage frame 5. The linkage frame 5 is installed in the accommodating groove 10. The linkage frame 5 is composed of a connecting plate 52 and linkage arms 51 arranged in parallel at both ends of the connecting plate 52. The connecting plate 52 and the linkage arm 51 are integrally formed in an H shape. The connecting plate 52 enables the linkage arm 51 to move forward and backward synchronously. The linkage frame 5 is installed in the pulley seat 1 and is not easily affected by dust blockage. The front and rear ends of the pulley seat 1 are respectively provided with a fixed shaft 12 connecting the front wheel frame 2 and the rear wheel frame 3. The front wheel frame 2 and the rear wheel frame 3 are distributed on the left and right sides of the pulley seat 1. The fixed shaft 12 extends outward from the inside of the pulley seat 1. The front wheel frame 2 and the rear wheel frame 3 can be rotatably connected to the outer end of the fixed shaft 12. The front and rear ends of the linkage arm 51 are respectively provided with a movable shaft 13 connecting the front wheel frame 2 and the rear wheel frame 3. The outer wall of the pulley seat 1 is provided with an arc hole 102 for limiting the rotation of the movable shaft 13 around the fixed shaft 12. The movable shaft 13 passes through the arc hole 102, and the front wheel frame 2 and the rear wheel frame 3 can be rotatably connected to the outer end of the movable shaft 13. The arc hole 102 at the front end of the pulley seat 1 is distributed below the fixed shaft 12 at the front end, and the arc hole 102 at the rear end of the pulley seat 1 is distributed above the fixed shaft 12 at the rear end. When folding, the front wheel frame 2 swings backward around the fixed shaft 12 at the front end of the pulley seat 1, and the rear wheel frame 3 swings backward around the fixed shaft 12 at the rear end of the pulley seat 1, that is, the front wheel frame 2 and the rear wheel frame 3 swing towards each other. The connecting plate 52 is connected to the fixed rotating shaft 12 at the front end of the pulley seat 1 through the tension spring 53. A round hole is provided on the connecting plate 52. One end of the tension spring 53 is hooked into the round hole, and the other end of the tension spring 53 is connected to the fixed rotating shaft 12. The tension spring 53 is in a stretched state. The force of the tension spring 53 to restore the deformation drives the front wheel frame 2 to swing forward, and at the same time, the rear wheel frame 3 is linked to swing backward, automatically unfolding the front wheel frame 2 and the rear wheel frame 3, which is simple and convenient to operate. A strip hole 103 corresponding to the linkage arm 51 is provided at the bottom of the accommodating groove 10. Since the front and rear ends of the linkage arm 51 are curved, the strip hole 103 facilitates the sliding of the linkage arm 51 forward and backward. At the same time, the strip hole 103 has a slide rail guiding function, so that the fixed shaft 12 can swing more smoothly in the arc hole 102. The bottom of the front wheel frame 2 and the rear wheel frame 3 are connected to the pulley assembly; the above-mentioned pulley assembly is composed of an axle rod 6 and pulleys 61 rotatably connected to the two ends of the axle rod 6, the axle rod 6 passes through the above-mentioned front wheel frame 2 and the rear wheel frame 3, and the axle rod 6 is rotatably connected to the front wheel frame 2 and the rear wheel frame 3.

[0041] Continue to refer to Figure 2 , Figure 3 and Fig. 9The locking mechanism includes a slider 4, a compression spring 42, a locking rod 33 and a control rod 43. A limiting member 15 is provided at the middle of the bottom of the accommodating groove 10. A gap is reserved between the limiting member 15 and the inner wall of the accommodating groove 10. The linkage arms 51 respectively pass through the gap. The limiting member 15 does not affect the forward and backward sliding of the linkage frame 5. The slider 4 is installed at the rear end of the accommodating groove 10. The compression spring 42 is installed between the slider 4 and the limiting member 15. The compression spring 42 is in a compressed state. The force of the compression spring 42 to restore the deformation drives the slider 4 to move backward. The pulley seat 1 is provided with a limiting hole 101 for limiting the lifting and lowering movement of the locking rod 33. The slider 4 is provided with a guide hole 40 for prompting the locking rod 33 to move up and down along the limiting hole 101. The limiting hole 101 is aligned with the guide hole 40. The locking rod 33 synchronously passes through the limiting hole 101 and the guide hole 40. The guide hole 40 is inclined upward from front to back along the direction of the pulley seat 1. The side edge of the rear wheel frame 3 is provided with a folding bayonet 31 that cooperates with the locking rod 33 to fold the pulley set, and the upper edge is provided with an unfolding bayonet 32 ​​that cooperates with the locking rod 33 to unfold the pulley set. A U-shaped hole 104 is provided on the rear side wall of the pulley seat 1. The control rod 43 is inserted into the U-shaped hole 104 until its inner end abuts against the slider 4. The control rod 43 is used to push the slider 4 to slide forward, so that the above-mentioned locking rod 33 rises along the limiting hole 101, and the locking rod 33 is released from the folding bayonet 31 or the unfolding bayonet 32.

[0042] The top of the slider 4 is provided with a guide groove 41 extending in the front-to-back direction, and the bottom surface of the upper cover 11 is provided with a convex rib 111 that fits into the guide groove 41. The cooperation between the convex rib 111 and the guide groove 41 enables the slider 4 to maintain sliding in the front-to-back straight direction, ensuring that the elastic force direction of the compression spring 42 on the slider 4 is not offset, thereby driving the locking rod 33 to slide upward along the guide hole 40.

[0043] Reference Figure 5 A groove 14 is provided in the middle of the lower end of the pulley seat 1. When folding, the front wheel frame 2 and the rear wheel frame 3 swing toward each other until the pulley assembly falls into the groove 14, and the locking rod 33 is clamped with the folding bayonet 31.

[0044] Reference Figure 3 The control rod 43 is sleeved with a return spring 431 to force it to extend outward, and the two ends of the return spring 431 respectively abut against the inner wall of the U-shaped hole 104 and the free end of the control rod 43.

[0045] Continue to refer to Figure 3 The above-mentioned limit member 15 is provided with a screw hole groove, and the rear side wall of the pulley seat 1 is also provided with a screw hole groove. The above-mentioned upper cover 11 is connected to the pulley seat 1 by inserting screws into the screw hole groove. The three screw holes are connected to form a triangular structure, and the upper cover 11 is firmly and stably connected to the pulley seat 1.

[0046] Reference Figure 7The bottom of the rear end of the accommodating groove 10 is provided with an opening, and a lower cover 16 is installed at the opening. The opening is convenient for checking and maintaining the internal accessories of the pulley seat 1, and the structural design is reasonable.

[0047] Reference Figure 1-Figure 9 The locking rod 33 is driven down along the limiting hole 101 to the locking opening 32, thereby ensuring that the rear wheel frame 3 is not easily returned to the swing position, and the pulley 61 can roll and slide safely and reliably.

[0048] Or, continue to refer to Figure 1-Figure 9 When the pulley device folds the pulley assembly, the hand grasps the control rod 43 and pushes the slider 4 forward. The inclined lower inner wall of the guide hole 40 pushes the locking rod 33 upward, driving the locking rod 33 to rise along the limit hole 101 to disengage the deployment bayonet 32. The other hand swings the rear wheel frame 3 forward until the pulley assembly falls into the groove 14. The rear wheel frame 3 drives the front wheel frame 2 to swing backward through the transmission arm until the pulley assembly falls into the groove 14. That is, the front wheel frame 2 and the rear wheel frame 3 swing toward each other, and the folding of the rear wheel frame 3 The bayonet 31 is aligned with the limiting hole 101, releasing the control rod 43, and the reset spring 431 causes the control rod 43 to automatically pop outward. The elastic force of the compression spring 42 to restore the deformation causes the slider 4 to slide backward, and the inclined upper inner wall of the guide hole 40 presses down the locking rod 33, driving the locking rod 33 to descend along the limiting hole 101 to the locking bayonet 31, ensuring that the rear wheel frame 3 is not easy to return and swing. The folding pulley assembly is simple to operate and can be performed anytime and anywhere without the aid of tools, bringing convenience to people's travel.

[0049] The rear end of the control rod 43 is provided with a safety rib 111 extending along its length direction, and the safety rib 111 is used to prevent the control rod 43 from being inserted inward. The safety rib 111 and the cross-section of the control rod 43 are in the shape of the opening of the U-shaped hole 104. When the control rod 43 is rotated until the safety rib 111 offsets the opening of the U-shaped hole 104, it can prevent the pulley 61 from being retracted due to accidental touching of the control rod 43, thereby ensuring safer sliding.

[0050] A shoe sole comprises a shoe sole body. The bottom of the shoe sole body is provided with a mounting groove, and the foldable pulley device is installed in the mounting groove.

[0051] A shoe comprises an upper and the above-mentioned sole, wherein the upper is bonded to the top of the sole.

[0052] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A foldable pulley device, characterized in that: It includes a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat, wherein a accommodating groove is provided in the pulley seat, and a notch of the accommodating groove is detachably connected with an upper cover; the linkage mechanism includes a front wheel frame, a rear wheel frame, a tension spring and a linkage frame, and the linkage frame is composed of a connecting plate and linkage arms arranged in parallel at both ends of the connecting plate, and the front and rear ends of the pulley seat are respectively provided with a fixed rotating shaft connecting the front wheel frame and the rear wheel frame, and the front and rear ends of the linkage arm are respectively provided with a movable rotating shaft connecting the front wheel frame and the rear wheel frame, and an arc hole for limiting the rotation of the movable rotating shaft around the fixed rotating shaft is provided on the outer wall of the pulley seat, and the connecting plate is connected to the fixed rotating shaft at the front end of the pulley seat through a tension spring, and a strip hole corresponding to the linkage arm is provided at the bottom of the accommodating groove, and the bottom of the front wheel frame and the rear wheel frame are connected to the pulley assembly; The locking mechanism includes a slider, a compression spring, a locking rod and a control rod. A limiting piece is arranged in the middle of the bottom of the accommodating groove. The slider is installed at the rear end of the accommodating groove. The compression spring is installed between the slider and the limiting piece. The pulley seat is provided with a limiting hole for limiting the lifting and lowering movement of the locking rod. The slider is provided with a guide hole for prompting the locking rod to lift and lower along the limiting hole. The locking rod synchronously passes through the limiting hole and the guide hole. The side edge of the rear wheel frame is provided with a closing snap-in for cooperating with the locking rod to fold the pulley group and the upper edge is provided with an unfolding snap-in for cooperating with the locking rod to unfold the pulley group. A U-shaped hole is arranged on the rear side wall of the pulley seat. The control rod is inserted into the U-shaped hole until its inner end abuts against the slider.

2. A foldable pulley device according to claim 1, characterized in that: A guide groove extending in the front-rear direction is provided on the top of the sliding block, and a convex ridge fitting into the guide groove is provided on the bottom surface of the upper cover.

3. A foldable pulley device as claimed in claim 1, characterized in that: A groove is provided in the middle of the lower end of the pulley seat. When folding, the front wheel frame and the rear wheel frame swing towards each other until the pulley assembly falls into the groove, and the locking rod is clamped with the folding bayonet.

4. A foldable pulley device as claimed in claim 1, characterized in that: The pulley assembly consists of a shaft and pulleys rotatably connected to both ends of the shaft.

5. A foldable pulley device as claimed in claim 1, characterized in that: The control rod is sleeved with a return spring which forces the control rod to extend outward.

6. A foldable pulley device as claimed in claim 1, characterized in that: The limiting member is provided with a screw hole groove, and the upper cover is connected to the pulley seat by inserting screws into the screw hole groove.

7. A foldable pulley device as claimed in claim 1, characterized in that: An opening is arranged at the bottom of the rear end of the accommodating groove, and a lower cover is installed at the opening.

8. A sole, comprising a sole body, characterized in that: A mounting groove is provided at the bottom of the sole body, and a foldable pulley device as described in any one of claims 1 to 7 is installed in the mounting groove.

9. A shoe, characterized in that: The shoe comprises an upper and the sole as claimed in claim 8, wherein the upper is bonded to the top of the sole.

Images