Foldable pulley device, sole and shoe

Abstract

The utility model 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 utility model relates to roller skate technology field especially is a kind of foldable pulley device, shoe sole and shoe. BACKGROUND

[0002] The pulley is simply installed on the sole surface of the shoes, which can be used for walking or rolling, and is suitable for people to pursue stimulating and entertaining sports. The traditional skate shoes are not convenient to disassemble and assemble, and need to be disassembled and assembled with the help of tools, which is time-consuming and laborious. It is difficult to find tools, and the operation is quite complicated. Moreover, the pulley is easy to lose after disassembly, and the use is not convenient. In addition, frequent disassembly and assembly of the pulley assembly can cause deformation and wear of the clamping groove, resulting in loosening of the pulley shaft, and there is a security risk that the pulley falls off and causes the wearer to fall down. SUMMARY

[0003] The utility model provides a kind of foldable pulley device, shoe sole and shoe to overcome the problems of traditional skate shoes, such as the trouble of using tools, time-consuming and laborious, and the security risk of pulley falling off.

[0004] The utility model adopts the following technical solutions:

[0005] A foldable pulley device includes a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat. The pulley seat has a receiving groove. The groove opening of the receiving groove is detachably connected to an upper cover.

[0006] The linkage mechanism includes a front wheel frame, a rear wheel frame, a tension spring and a linkage frame. The linkage frame is installed in the receiving groove. The linkage frame is composed of a connecting plate and linkage arms arranged in parallel on both ends of the connecting plate. The pulley seat has fixed shafts at the front and rear ends, which are connected to the front wheel frame and the rear wheel frame. The linkage arms have rotating shafts at the front and rear ends, which are connected to the front wheel frame and the rear wheel frame. The outer wall of the pulley seat has an arc-shaped hole for limiting the rotation of the rotating shaft around the fixed shaft. The connecting plate is connected to the fixed shaft at the front end of the pulley seat by the tension spring. The groove bottom of the receiving groove has a strip-shaped hole corresponding to the linkage arms. The bottom of the front wheel frame and the rear wheel frame is connected to the pulley assembly.

[0007] The locking mechanism includes a sliding block, a compression spring, a locking rod and a control rod. The middle part of the groove bottom of the receiving groove is provided with a limiting piece. The sliding block is installed at the rear end of the receiving groove. The compression spring is installed between the sliding block and the limiting piece. The pulley seat has a limiting hole for limiting the lifting movement of the locking rod. The sliding block has a guide hole for promoting the lifting movement of the locking rod along the limiting hole. The locking rod synchronously penetrates the limiting hole and the guide hole. The side of the rear wheel frame has a folding slot for folding the pulley assembly in cooperation with the locking rod, and the upper side has an unfolding slot for unfolding the pulley assembly in cooperation with the locking rod. The rear side wall of the pulley seat has a U-shaped hole, and the control rod is inserted into the U-shaped hole to abut against the sliding block at the inner end.

[0008] Further improved, the top of the slider is provided with a guide groove extending in the front-rear direction, and the bottom surface of the upper cover is provided with a convex ridge fitted into the guide groove.

[0009] Further improved, the middle part of the lower end of the pulley seat is provided with a groove, 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 in the folding clamping hole.

[0010] Further improved, the front wheel frame is composed of two front wheel supports, and the front wheel supports are respectively connected to the left and right ends of the fixed rotating shaft.

[0011] Further improved, the rear wheel frame is composed of two rear wheel supports, and the rear wheel supports are respectively connected to the left and right ends of the fixed rotating shaft.

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

[0013] Further improved, a return spring is sleeved on the control rod to facilitate its outward extension.

[0014] Further improved, the limiting part is provided with a screw hole groove, and the upper cover is connected to the pulley seat by screwing into the screw hole groove.

[0015] Further improved, the bottom of the rear end of the accommodating groove is provided with an opening, and the lower cover is installed at the opening.

[0016] Further improved, the pulley assembly is composed of a shaft and pulleys connected to both ends of the shaft.

[0017] A shoe sole includes a shoe sole body, and a mounting groove is formed in the bottom of the shoe sole body, and the foldable pulley device is installed in the mounting groove.

[0018] A shoe includes a shoe upper and the shoe sole, and the shoe upper is bonded to the top of the shoe sole.

[0019] As can be seen from the description of the structure of the utility model, compared with the prior art, the utility model 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 integrally formed, the two linkage arms can synchronously drive the rotating shaft to swing, the left and right pulleys are coordinated and consistent, and the structure is stable.

[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-shaped hole for limiting the rotation of the rotating shaft around the fixed rotating shaft, and the front wheel frame and the rear wheel frame can be synchronously folded or unfolded.

[0022] 3. The linkage frame of the pulley device is provided with a connecting plate, the connecting plate is provided with a tension spring with the fixed shaft and the rotating shaft, and the restoring force of the tension spring promotes the front wheel frame and the rear wheel frame to expand away from each other, and the operation is simple and convenient.

[0023] 4. The pulley seat is provided with a limiting hole for limiting the lifting movement of the locking rod, the sliding block is provided with a guide hole for promoting the lifting movement of the locking rod along the limiting hole, the compression spring is installed between the sliding block and the limiting piece, the restoring deformation of the compression spring promotes the sliding block to slide backward, and the locking rod is promoted to slide downward along the limiting hole to be clamped in the above-mentioned socket, the front wheel frame and the rear wheel frame are expanded or folded firmly and stably, the locking rod is not prone to being unclamped due to jumping of the shoes, and the wearing is safe and reliable.

[0024] 5. The top of the sliding block is provided with a guide groove extending in the front-rear direction, and the bottom surface of the upper cover is provided with a convex ridge matched and clamped into the guide groove, the sliding block is not prone to shaking in the accommodating groove through the cooperation of the convex ridge and the guide groove, the compression spring can accurately and effectively drive the sliding block to slide, and the structural design is reasonable.

[0025] 6. The top surface of the sliding block of the locking mechanism 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, the sliding block is limited to slide linearly back and forth in the front-rear direction of the pulley seat through the cooperation of the convex ridges and the guide grooves, the space occupied by accessories is greatly reduced, the height of the pulley device is low, and then the thickness of the shoe sole is reduced, so that the shoe sole is more light and comfortable to wear.

[0026] 7. The control rod is sleeved with a reset spring, the reset spring is between the control rod and the inner wall of the U-shaped hole, the reset spring promotes the control rod to automatically extend outward, and it is convenient to pinch the control rod to push the sliding block to slide again. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic view of the pulley device of the utility model.

[0028] Figure 2 It is a three-dimensional structural schematic view of the pulley device of the utility model after the upper cover is opened.

[0029] Figure 3 It is an explosion schematic view of the pulley device of the utility model.

[0030] Figure 4 It is a side view structural schematic view of the pulley device of the utility model when the pulley device is expanded.

[0031] Figure 5 It is a side view structural schematic view of the pulley device of the utility model when the pulley device is folded.

[0032] Figure 6 It is a top view structural schematic view of the pulley device of the utility model.

[0033] Figure 7 It is the bottom structure schematic view of the pulley device of the utility model.

[0034] Figure 8 It is the three-dimensional structure schematic view of the linkage mechanism and pulley assembly of the utility model.

[0035] Figure 9 It is the cross section structure schematic view of the pulley device of the utility model along Figure 6 D-D direction.

[0036] Among them:

[0037] Pulley seat 1, accommodating groove 10, upper cover 11, fixed shaft 12, movable shaft 13, recess 14, limiting piece 15, lower cover 16, limiting hole 101, arc-shaped hole 102, strip-shaped hole 103, U-shaped hole 104, convex ridge 111, front wheel frame 2, rear wheel frame 3, folding clamping port 31, unfolding clamping port 32, locking rod 33, sliding block 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 6, pulley 61. Specific embodiments

[0038] The specific embodiments of the utility model are described below with reference to the drawings.

[0039] Referring to Figures 1-3 A foldable pulley device, comprising a pulley assembly, a linkage mechanism, a locking mechanism and a pulley seat 1, the pulley seat 1 is provided with an accommodating groove 10, and the slot of the accommodating groove 10 is detachably connected with an upper cover 11; the upper cover 11 is connected with the pulley seat 1 through screws, so as to facilitate the maintenance of the accessories in the pulley seat 1.

[0040] Referring to Figure 2 , Figure 3 and Figure 9, the linkage mechanism comprises the front wheel frame 2, the rear wheel frame 3, the tension spring 53 and the linkage frame 5, the linkage frame 5 is installed in the accommodating groove 10, the linkage frame 5 is composed of the connecting plate 52 and the linkage arms 51 arranged in parallel at two ends of the connecting plate 52, the connecting plate 52 and the linkage arms 51 are integrally formed in H shape, the connecting plate 52 enables the linkage arms 51 to move forward and backward synchronously, and the linkage frame 5 is installed in the pulley seat 1 and is not easy to be affected by dust blockage. The front end and the rear end of the pulley seat 1 are respectively provided with the fixed rotating shaft 12 connected with 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 side and the right side of the pulley seat 1, the fixed rotating shaft 12 extends outward from the inside of the pulley seat 1, and the front wheel frame 2 and the rear wheel frame 3 are rotatably connected with the outer end of the fixed rotating shaft 12. The front end and the rear end of the linkage arm 51 are respectively provided with the movable rotating shaft 13 connected with the front wheel frame 2 and the rear wheel frame 3, the outer wall of the pulley seat 1 is provided with the arc-shaped hole 102 for limiting the movable rotating shaft 13 from rotating around the fixed rotating shaft 12, the movable rotating shaft 13 penetrates through the arc-shaped hole 102, and the front wheel frame 2 and the rear wheel frame 3 are rotatably connected with the outer end of the movable rotating shaft 13. The arc-shaped hole 102 at the front end of the pulley seat 1 is distributed below the fixed rotating shaft 12 at the front end of the pulley seat 1, and the arc-shaped hole 102 at the rear end of the pulley seat 1 is distributed above the fixed rotating shaft 12 at the rear end of the pulley seat 1, when being folded, the front wheel frame 2 swings backward around the fixed rotating shaft 12 at the front end of the pulley seat 1, the rear wheel frame 3 swings backward around the fixed rotating 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 with the fixed rotating shaft 12 at the front end of the pulley seat 1 through the tension spring 53, the connecting plate 52 is provided with a round hole, one end of the tension spring 53 is hooked on the round hole, the other end of the tension spring 53 is connected with the fixed rotating shaft 12, the tension spring 53 is in a stretched state, and the force of the tension spring 53 recovering deformation drives the front wheel frame 2 to swing forward and simultaneously drives the rear wheel frame 3 to swing backward, so that the front wheel frame 2 and the rear wheel frame 3 are automatically unfolded, and the operation is simple and convenient. The groove bottom of the accommodating groove 10 is provided with the strip-shaped hole 103 corresponding to the linkage arm 51, since the front end and the rear end of the linkage arm 51 are curved, the strip-shaped hole 103 facilitates the linkage arm 51 to slide forward and backward, and simultaneously the strip-shaped hole 103 has a sliding rail guiding effect, so that the fixed rotating shaft 12 swings more smoothly in the arc-shaped hole 102, and the bottom of the front wheel frame 2 and the rear wheel frame 3 is connected with the pulley assembly; the pulley assembly comprises the shaft rod 6 and the pulleys 61 rotatably connected at two ends of the shaft rod 6, the shaft rod 6 penetrates through the front wheel frame 2 and the rear wheel frame 3, and the shaft rod 6 is rotatably connected with the front wheel frame 2 and the rear wheel frame 3.

[0041] With reference to Figure 2 , Figure 3 and Figure 9, the locking mechanism comprises the sliding block 4, the compression spring 42, the locking rod 33 and the control rod 43, the middle part of the groove bottom of the accommodating groove 10 is provided with the limiting piece 15, a gap is reserved between the limiting piece 15 and the inner wall of the accommodating groove 10, the linkage arms 51 respectively pass through the gap, and the limiting piece 15 does not affect the forward and backward sliding of the linkage frame 5. The sliding block 4 is installed at the rear end of the accommodating groove 10, the compression spring 42 is installed between the sliding block 4 and the limiting piece 15, the compression spring 42 is in a compressed state, and the force of the compression spring 42 recovering deformation drives the sliding block 4 to move backward. The pulley seat 1 is provided with the limiting hole 101 for limiting the lifting movement of the locking rod 33, the sliding block 4 is provided with the guide hole 40 for promoting the lifting movement of the locking rod 33 along the limiting hole 101, the limiting hole 101 is aligned with the guide hole 40, the locking rod 33 synchronously penetrates the limiting hole 101 and the guide hole 40, and the guide hole 40 is upwardly inclined from front to back along the direction of the pulley seat 1. The side of the rear wheel frame 3 is provided with the folding clamping hole 31 for cooperating with the locking rod 33 to fold the pulley set, and the upper side is provided with the unfolding clamping hole 32 for cooperating with the locking rod 33 to unfold the pulley set. The rear side wall of the pulley seat 1 is provided with the U-shaped hole 104, the control rod 43 is inserted into the U-shaped hole 104 to abut against the sliding block 4 at the inner end of the U-shaped hole 104, and the control rod 43 is used for pushing the sliding block 4 to slide forward, so that the above locking rod 33 is lifted along the limiting hole 101, and the locking rod 33 is clamped in the folding clamping hole 31 or the unfolding clamping hole 32.

[0042] The top of the sliding block 4 is provided with the guide groove 41 extending in the front-rear direction, and the bottom surface of the upper cover 11 is provided with the convex ridge 111 fitted into the guide groove 41. The cooperation between the convex ridge 111 and the guide groove 41 enables the sliding block 4 to keep sliding in the straight direction, guarantees that the elastic force direction of the compression spring 42 to the sliding block 4 does not deviate, and further drives the locking rod 33 to slide upward along the guide hole 40.

[0043] Referring to Figure 5 The lower end of the pulley seat 1 is provided with the recess 14. When folding, the front wheel frame 2 and the rear wheel frame 3 are oscillated towards each other until the pulley assembly falls into the recess 14, and the locking rod 33 is clamped in the folding clamping hole 31.

[0044] Referring to Figure 3 The control rod 43 is provided with the reset spring 431 for promoting the outward extension of the control rod 43, and the two ends of the reset spring 431 abut against the inner wall of the U-shaped hole 104 and the free end of the control rod 43 respectively.

[0045] Continuing to refer to Figure 3 The limiting piece 15 is provided with a screw hole groove, the rear side wall of the pulley seat 1 is also provided with a screw hole groove, the upper cover 11 is connected with the pulley seat 1 by being screwed into the screw hole groove, three screw hole connecting lines form a triangular structure, and the upper cover 11 is firmly and stably connected with the pulley seat 1.

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

[0047] With reference to Figures 1-9 When the pulley device unfolds the pulley assembly, the hand holds 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, drives the locking rod 33 to rise along the limiting hole 101 to disengage from the folding notch 31, releases the locking of the locking rod 33 to the rear wheel frame 3, and the tension of the restoring deformation of the tension spring 53 drives the front wheel frame 2 to swing forward. The front wheel frame 2 drives the rear wheel frame 3 to swing backward through the transmission arm 51. The front wheel frame 2 and the rear wheel frame 3 are unfolded in opposite directions. The unfolding notch 32 of the rear wheel frame 3 is aligned with the limiting hole 101. The control rod 43 is released, and the reset spring 431 automatically pushes the control rod 43 outward. The spring 42 restores the elastic force of the deformation to drive the slider 4 to slide backward. The inclined upper inner wall of the guide hole 40 presses the locking rod 33 downward, drives the locking rod 33 to descend along the limiting hole 101 to engage the unfolding notch 32, and ensures that the rear wheel frame 3 is not easy to return to swing. The pulley 61 rolls and slides safely and reliably.

[0048] Alternatively, with reference to Figures 1-9 When the pulley device folds the pulley assembly, the hand holds 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, drives the locking rod 33 to rise along the limiting hole 101 to disengage from the unfolding notch 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. The folding notch 31 of the rear wheel frame 3 is aligned with the limiting hole 101. The control rod 43 is released, and the reset spring 431 automatically pushes the control rod 43 outward. The spring 42 restores the elastic force of the deformation to drive the slider 4 to slide backward. The inclined upper inner wall of the guide hole 40 presses the locking rod 33 downward, drives the locking rod 33 to descend along the limiting hole 101 to engage the folding notch 31, and ensures that the rear wheel frame 3 is not easy to return to swing. The folding pulley assembly is simple to operate and does not require tools. It can be performed anytime and anywhere, which brings convenience to people's travel.

[0049] The rear end of the control rod 43 is provided with a safety protrusion 111 extending along the length direction thereof. The safety protrusion 111 is used to prevent the control rod 43 from being inserted inward. The cross section of the safety protrusion 111 and the control rod 43 is shaped as a U-shaped hole 104. When the control rod 43 is rotated to offset the hole of the U-shaped hole 104, the safety protrusion 111 can prevent the control rod 43 from being touched by mistake to cause the pulley 61 to fold, and ensure that the sliding is safer.

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

[0051] A shoe comprising an upper and the above-mentioned sole, the upper being bonded to the top of the sole.

[0052] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-substantial change to the present application using the concept should be considered as an infringement of the protection scope of the present application.

Claims

1. A foldable pulley device, characterized in that: The device includes a pulley assembly, a linkage mechanism, a locking mechanism, and a pulley seat. The pulley seat has a receiving groove, and a top cover is detachably connected to the opening of the receiving groove. The linkage mechanism includes a front wheel frame, a rear wheel frame, a tension spring, and a linkage frame. The linkage frame consists of a connecting plate and linkage arms arranged parallel to each other at both ends of the connecting plate. The front and rear ends of the pulley seat are respectively provided with fixed rotating shafts connecting the front wheel frame and the rear wheel frame. The front and rear ends of the linkage arms are respectively provided with movable rotating shafts connecting the front wheel frame and the rear wheel frame. The outer wall of the pulley seat is provided with an arc-shaped 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 receiving groove is provided with a strip-shaped hole corresponding to the linkage arm. 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 limit member is provided in the middle of the bottom of the receiving groove. The slider is installed at the rear end of the receiving groove. The compression spring is installed between the slider and the limit member. The pulley seat is provided with a limit hole for limiting the lifting and lowering movement of the locking rod. The slider is provided with a guide hole for causing the locking rod to lift and lower along the limit hole. The locking rod passes through the limit hole and the guide hole simultaneously. The side edge of the rear wheel frame is provided with a retraction latch that cooperates with the locking rod to retract the pulley assembly, and the upper edge is provided with an unfolding latch that cooperates with the locking rod to unfold the pulley assembly. A U-shaped hole is provided 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. The foldable pulley device as described in claim 1, characterized in that: The top of the slider is provided with a guide groove extending in the front-to-back direction, and the bottom surface of the top cover is provided with a protrusion that fits into the guide groove.

3. The foldable pulley device as described in claim 1, characterized in that: The lower end of the pulley seat has a groove in the middle. When it is closed, 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 engaged with the closing latch.

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

5. The foldable pulley device as described in claim 1, characterized in that: The control lever is fitted with a return spring that causes it to extend outward.

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

7. The foldable pulley device as described in claim 1, characterized in that: The bottom of the accommodating groove has an opening at the rear end, and a lower cover is installed at the opening.

8. A shoe sole, comprising a sole body, characterized in that: The bottom of the sole body is provided with an installation groove, in which a foldable pulley device as described in any one of claims 1-7 is installed.

9. A shoe, characterized in that: It includes an upper and a sole as described in claim 8, wherein the upper is bonded to the top of the sole.

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