All-plastic wheel provided with brake pedal and brake release pedal

Abstract

According to the all-plastic wheel provided with the brake pedal and the brake release pedal, a control device is arranged in a wheel body, and the control device comprises a brake body, wheel locking teeth matched with a movable locking piece in a rotating wheel, a brake structure and a brake release structure; the brake structure can be driven to move upwards by treading the brake pedal, the brake main body is lifted upwards, steps of the brake main body are matched with brake lock teeth of the brake structure to fix the lifted brake main body, so that the wheel lock teeth are matched with the movable lock plate, the rotating wheel cannot roll, and lock tooth grooves of the lock plate are matched with guide teeth, so that the wheel body cannot rotate; meanwhile, the effects of braking and orientation are achieved; when brake release is needed, the brake release pedal is treaded, the brake release structure lifts the brake body upwards through the protrusion to enable the brake lock teeth to leave the step, the brake pedal restores to the original position under the action of the torsion spring, the brake release pedal restores to the original position under the action of the torsion spring, and the wheels can roll and rotate.

Description

Technical Field

[0001] The present invention relates to a fully plastic wheel provided with a brake pedal and a brake release pedal. Background Art

[0002] For the convenience and ease during work, trolleys are applied in some work fields. To ensure work safety, the wheels of trolleys are generally provided with a braking device to prevent the wheels from easily rotating and rolling, which may cause the displacement of the trolley. Currently, most of the braking devices for wheels on the market are brake pedals, and there is only a brake pedal. The wheel is locked by pressing down the brake pedal. However, when unlocking, the operator often needs to lift the brake pedal again. This process requires the operator to carefully find the position of the pedal and then lift it with force, which is not only time-consuming but also laborious and inconvenient to use. Summary of the Invention

[0003] The present invention provides a fully plastic wheel provided with a brake pedal and a brake release pedal.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0005] A fully plastic wheel provided with a brake pedal and a brake release pedal, including a guiding member. A wheel body is provided at the lower end of the guiding member. A main shaft is provided on the wheel body. Both ends of the main shaft are respectively connected with a runner. An active lock piece is fixedly connected to the inner side of the runner. Lock teeth are arranged at intervals on the active lock piece. A control device is further provided inside the wheel body. The control device includes a brake main body. The brake main body is provided with wheel lock teeth opposite to the active lock piece. The braking device further includes a braking structure and a brake release structure. The braking structure includes a brake pedal, and the brake release structure includes a brake release pedal. The top end of the braking structure is provided with a first slope. The top end of the first slope is provided with a brake lock tooth protruding outward and upward. A second slope opposite to the first slope is provided on the inner wall of the brake main body. A step is formed between the lower end of the second slope and the inner wall of the brake main body. The top end of the brake release structure is provided with a recessed groove. A protrusion cooperating with the recessed groove is further provided downward on the inner wall of the brake main body. The protrusion is opposite to the second slope, and the protrusion is higher than the lowest end of the second slope, that is, higher than the step.

[0006] Preferably, the upper end of the wheel body is sleeved on the upper end of the outer wall of the guiding member. Guiding teeth are arranged at intervals on the side wall at the lower end of the guiding member, and the guiding teeth are arranged inside the wheel body.

[0007] Preferably, the brake main body includes two opposite side plates on the left and right and a platform connecting the two side plates. A first spring is provided on the platform. The lower end of the first spring is sleeved on a first spring seat provided on the platform.

[0008] Preferably, an oval through-hole is provided at the lower end of the brake main body and sleeved on the main shaft. Through openings are provided at both upper ends of the left and right side plates of the brake main body. Opposite to each other inside the openings are fixed grooves extending to the top. The inner length of the wheel lock teeth is the same as that of the opening, and a clamping groove is provided in the middle. After the inner side of the wheel lock teeth passes through the opening and enters the fixed groove, it is pushed upward, and the wheel lock teeth are clamped between the inner and outer sides of the side plates of the brake main body by using the clamping groove. A second spring is also provided at the fixed groove. The bottom end of the second spring abuts against the bottom of the fixed groove, and the top end penetrates into the inside of the wheel lock teeth and abuts against the inside of the wheel lock teeth, thereby fixing the wheel lock teeth in the fixed groove.

[0009] Preferably, the braking structure and the brake release structure are located inside the brake main body and sleeved on the main shaft. The inner sides of the brake pedal and the brake release pedal extend downward along the wheel body and are connected to the braking structure and the brake release structure inside the wheel body.

[0010] Preferably, torsion springs are provided for the connection between the braking structure and the brake release structure and the main shaft.

[0011] Preferably, a directional lock piece is further provided on the platform. A lock tooth groove matching with the guide teeth is provided at the top of the front end of the directional lock piece. The directional lock piece is located below the guide teeth. The vertical distance between the directional lock piece and the guide teeth is the same as the height that the braking structure can lift the brake main body.

[0012] Preferably, the tail end of the directional lock piece is fixedly connected to the inside of the brake main body through a shaft. A third spring is provided below the inner side of the front end of the directional lock piece. The top end of the third spring abuts against the inner side of the directional lock piece, and the bottom end abuts against the platform. A third spring seat is also provided on the platform to cooperate with the third spring.

[0013] Preferably, both the groove and the protrusion are arc-shaped structures.

[0014] Preferably, a connecting head is provided at the upper end of the guide member.

[0015] Compared with the prior art, the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal is provided with a control device inside the wheel body. The control device includes a brake main body, a wheel lock tooth that cooperates with a movable lock piece inside the rotating wheel, a brake structure and a brake release structure. By stepping on the brake pedal, the brake structure can be driven to move upward, and at the same time, the brake main body is lifted upward. The step of the brake main body cooperates with the brake lock tooth of the brake structure to fix the lifted brake main body. Thus, the wheel lock tooth and the movable lock piece cooperate, and the rotating wheel cannot roll. At the same time, the lock tooth groove of the lock piece cooperates with the guiding tooth, so that the wheel body cannot rotate, playing the role of braking and orientation at the same time. When it is necessary to release the brake, step on the brake release pedal. The brake release structure lifts the brake main body upward again through the protrusion so that the brake lock tooth leaves the step. The brake pedal returns to its original position under the action of the torsion spring, and the brake release pedal also returns to its original position under the action of the torsion spring. The wheel returns to the state where it can roll and rotate. The brake release pedal simplifies the brake release process, saving time and effort in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a perspective view of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0017] Figure 2 FIG. is a first partial view of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0018] Figure 3 FIG. is a second partial view of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0019] Figure 4 FIG. is a Figure 3 magnified view of part A of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0020] Figure 5 FIG. is a cross-sectional view of the brake structure of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0021] Figure 6 FIG. is a Figure 5 magnified view of part B of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0022] Figure 7 FIG. is a cross-sectional view of the brake release structure of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0023] Figure 8 FIG. is a Figure 7 magnified view of part C of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal.

[0024] Figure 9 FIG. is an exploded view of the all-plastic wheel of the present invention provided with a brake pedal and a brake release pedal. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments with reference to the accompanying drawings.

[0026] As Figures 1 to 9 shown, a fully plastic wheel provided with a brake pedal and a brake release pedal includes a guide member 1. A connecting head 11 is provided at the upper end of the guide member 1. A wheel body 2 is provided below the connecting head 11. The upper end of the wheel body 2 is sleeved on the upper outer wall of the guide member 1. Therefore, the wheel body 2 can rotate around the guide member 1; Guide teeth 12 are arranged at intervals on the lower side wall of the guide member 1, and the guide teeth 12 are arranged inside the wheel body 2.

[0027] A main shaft 3 is provided on the wheel body 2. Both ends of the main shaft 3 are respectively connected with runner wheels 4. Movable lock pieces 41 are fixedly connected to the inner sides of the two runner wheels 4, and locking teeth are arranged at intervals on the movable lock pieces 41.

[0028] A control device 5 is further provided inside the wheel body 2. The control device 5 includes a brake main body 51; The brake main body 51 includes two opposite side plates on the left and right and a platform 517 connecting the two side plates. A first spring 6 is provided on the platform 517. The lower end of the first spring 6 is sleeved on a first spring seat (not shown in the figure) provided on the platform 517, and the upper end of the first spring 6 abuts against the wheel body 2.

[0029] An oval through hole is provided at the lower end of the brake main body 51 and sleeved on the main shaft 3, so that the brake main body 51 can move vertically up and down relative to the main shaft 3. Through openings 515 are provided on both sides of the upper ends of the left and right side plates of the brake main body 51. Opposite fixing grooves 516 extending to the top are provided inside the openings 515. A wheel locking tooth 52 opposite to the movable lock piece 41 is provided at the opening 515. The inner length of the wheel locking tooth 52 is the same as that of the opening 515, and a card slot 521 is provided in the middle. After the inner side of the wheel locking tooth 52 passes through the opening 515 and enters the fixing groove 516, it is pushed upward, and the wheel locking tooth 52 is clamped between the inner and outer sides of the side plate of the brake main body 51 by using the card slot 521. At the same time, a second spring 55 is also provided at the fixing groove 516. The bottom end of the second spring 55 abuts against the bottom of the fixing groove 516, and the top end penetrates into the inside of the wheel locking tooth 52 and abuts against the inside of the wheel locking tooth 52, thereby fixing the wheel locking tooth 52 in the fixing groove 516.

[0030] The brake device 5 further includes a brake structure 53 and a brake release structure 54. The brake structure 53 and the brake release structure 54 are located inside the brake main body 51 and sleeved on the main shaft 3. The bottom ends of the brake structure 53 and the brake release structure 54 extend outward to the outside of the wheel body 2, and brake pedals 531 and brake release pedals 541 are arranged along the wheel body 2 upward at the ends.

[0031] At the top of the brake structure 53, there is a first slope 532. At the top of the first slope 532, there is a brake lock tooth 533 that protrudes outward and upward. On the inner wall of the brake main body 51, there is a second slope 511 opposite to the first slope 532. A step 512 is formed between the lower end of the second slope 511 and the inner wall of the brake main body 51. By stepping on the brake pedal 531, the brake structure 53 inside the brake main body 51 moves upward, thereby locking the lifted brake main body 51. The first slope 532 slides to the lower side of the second slope 511. When the brake lock tooth 533 cooperates with the step 512, the brake main body 51 is lifted and fixed. At this time, the wheel lock tooth 52 cooperates with the movable lock piece 41, and the runner 4 cannot roll. At this time, the first spring 6 is compressed.

[0032] At the top of the brake release structure 54, there is a recess 542 that is concave inward. The recess 542 is an arc-shaped structure. On the inner wall of the brake main body 51, there is also a protrusion 513 that is arranged downward and cooperates with the recess 542. The protrusion 513 is an arc-shaped structure. The protrusion 513 is opposite to the second slope 511, and the protrusion 513 is higher than the lowest end of the second slope 511, that is, higher than the step 512. Both the brake structure 53 and the brake release structure 54 are connected to the main shaft 3 and are provided with torsion springs.

[0033] When wanting to unlock the lifted brake main body 51, by stepping on the brake release pedal 541. During this process, the protrusion 513 leaves the recess 452. Since the protrusion 513 is higher than the step 512, the brake release structure 54 can lift the brake main body 51 further upward through the protrusion 513 to make the brake lock tooth 533 leave the step 512. The brake pedal 531 returns to its original position under the action of the torsion spring, and the brake release pedal 541 also returns to its original position under the action of the torsion spring. The brake main body 51 returns to its original position under the action of the first spring 6 and gravity.

[0034] On the platform 517, there is also a directional lock piece 7. At the top of the front end of the directional lock piece 7, there is a lock tooth groove 71 that cooperates with the guide tooth 12. The tail end is fixedly connected inside the brake main body 51 through a shaft. Below the inner side of the front end of the directional lock piece 7, there is a third spring. The top end of the third spring abuts against the inner side of the directional lock piece 7, and the bottom end abuts against the platform 517. On the platform 517, there is also a third spring seat (not shown in the figure) that cooperates with the third spring. The third spring can always support the directional lock piece 7 in a horizontal state so that it can be accurately matched with the guide tooth 12 when at the same height as the guide tooth 12. The directional lock piece 7 is located below the guide tooth 12. The vertical distance between the directional lock piece 7 and the guide tooth 12 is the same as the height that the brake structure 53 can lift the brake main body 51. Therefore, when the brake main body 51 is lifted and fixed by the brake structure 53, the lock tooth groove of the directional lock piece 7 cooperates with the guide tooth 12 to make the wheel body 2 unable to rotate around the guide member 1, playing the role of braking and orientation at the same time.

[0035] The all-plastic wheel of the present invention is provided with a brake pedal and a brake release pedal. By arranging a control device 5 inside the wheel body 2, the control device 5 includes a brake main body 51, a wheel lock tooth 52 that cooperates with the movable lock piece 41 inside the runner 4, a brake structure 53 and a brake release structure 54. By stepping on the brake pedal 531, the brake structure 53 can be driven to move upward, and at the same time, the brake main body 51 is lifted upward. The step 512 of the brake main body 51 cooperates with the brake lock tooth 533 of the brake structure 53 to fix the lifted brake main body 51. Thus, the wheel lock tooth 52 and the movable lock piece 41 cooperate, and the runner 4 cannot roll. At the same time, the lock tooth groove 71 of the lock piece 7 cooperates with the guide tooth 12, so that the wheel body 2 cannot rotate, playing the roles of braking and orientation at the same time. When it is necessary to release the brake, step on the brake release pedal 541. The brake release structure 54 lifts the brake main body 51 upward again through the protrusion 513 to make the brake lock tooth 533 leave the step 512. The brake pedal 531 returns to its original position under the action of the torsion spring, and the brake release pedal 541 also returns to its original position under the action of the torsion spring. The wheel returns to the state where it can roll and rotate. The brake release pedal 541 simplifies the process of releasing the brake, saving time and effort in operation.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully plastic wheel provided with a brake pedal and a brake release pedal, comprising a guide member (1), a wheel body (2) being provided at the lower end of the guide member (1), a main shaft (3) being provided on the wheel body (2), and two ends of the main shaft (3) being respectively connected to rotating wheels (4), characterized in that: A movable locking plate (41) is fixedly connected to the inner side of the rotating wheel (4), and locking teeth are arranged at intervals on the movable locking plate (41). A control device (5) is also arranged inside the wheel body (2), and the control device (5) includes a brake body (51); the brake body (51) is provided with wheel locking teeth (52) opposite to the movable locking plate (41); the brake device (5) also includes a brake structure (53) and a brake release structure (54), the brake structure (53) includes a brake pedal (531), and the brake release structure (54) includes a brake release pedal (541); a first slope (532) is arranged at the top of the brake structure (53), and the first slope (532) ) is provided with a brake lock tooth (533) protruding outward and upward at the top, and a second slope (511) opposite to the first slope (532) is provided on the inner wall of the brake body (51), and a step (512) is formed between the lower end of the second slope (511) and the inner wall of the brake body (51); the top of the brake release structure (54) is provided with an inwardly recessed groove (452), and a protrusion (513) matching the groove (452) is further provided downward on the inner wall of the brake body (51), and the protrusion (513) is opposite to the second slope (511), and the protrusion (513) is higher than the bottom end of the second slope (511), that is, higher than the step (512).

2. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 1, characterized in that: The upper end of the wheel body (2) is sleeved on the upper end of the outer wall of the guide member (1), and guide teeth (12) are arranged at intervals on the side wall of the lower end of the guide member (1), and the guide teeth (12) are arranged inside the wheel body (2).

3. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 1, characterized in that: The brake body (51) comprises two opposite side plates on the left and right and a platform (517) connecting the two side plates. A first spring (6) is arranged on the platform (517). The lower end of the first spring (6) is sleeved on a first spring seat arranged on the platform (517).

4. The all-plastic wheel provided with a brake pedal and a brake release pedal according to claim 3, characterized in that: The lower end of the brake body (51) is provided with an elliptical through hole and is sleeved on the main shaft (3). The upper ends of the left and right side plates of the brake body (51) are provided with through openings (515) on both sides. The inner sides of the openings (515) are relatively provided with fixing grooves (516) extending to the top. The inner side of the wheel lock tooth (52) is the same length as the opening (516), and a clamping groove (521) is provided in the middle. The inner side of the wheel lock tooth (52) passes through the opening (515). ) enters the fixing groove (516) and is pushed upward, and the wheel lock tooth (52) is engaged between the inner and outer sides of the side plate of the brake body (51) by using the locking groove (521). A second spring (55) is also provided at the fixing groove (516), and the bottom end of the second spring (55) abuts against the bottom of the fixing groove (516), and the top end penetrates into the interior of the wheel lock tooth (52) and abuts against the interior of the wheel lock tooth (52), thereby fixing the wheel lock tooth (52) in the fixing groove (516).

5. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 1, characterized in that: The brake structure (53) and the brake release structure (54) are located on the inner side of the brake body (51) and are sleeved on the main shaft (3); the inner sides of the brake pedal (531) and the brake release pedal (541) extend downward along the wheel body (2) and are connected to the brake structure (53) and the brake release structure (54) inside the wheel body (2).

6. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 1, characterized in that: The braking structure (53) and the brake release structure (54) are connected to the main shaft (3) and are both provided with torsion springs.

7. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 3, characterized in that: A directional locking plate (7) is also provided on the platform (517), and a locking tooth groove (71) cooperating with the guide tooth (12) is provided at the top of the front end of the directional locking plate (7). The directional locking plate (7) is located below the guide tooth (12), and the vertical distance between the directional locking plate (7) and the guide tooth (12) is the same as the height at which the brake structure (53) can lift the brake body (51).

8. The all-plastic wheel provided with a brake pedal and a brake release pedal according to claim 7, characterized in that: The tail end of the directional locking plate (7) is fixedly connected to the inside of the brake body (51) by means of an axis passing through the directional locking plate (7). A third spring is arranged below the inner side of the front end of the directional locking plate (7). The top end of the third spring abuts against the inner side of the directional locking plate (7), and the bottom end abuts against the platform (517). A third spring seat is also arranged on the platform (517) to cooperate with the third spring.

9. The all-plastic wheel with a brake pedal and a brake release pedal according to claim 1, characterized in that: The groove (542) and the protrusion (513) are both arc-shaped structures.

10. The all-plastic wheel provided with a brake pedal and a brake release pedal according to any one of claims 1 to 9, characterized in that: The upper end of the guide member (1) is provided with a connecting head (11).

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