Double-drive linkage double-brake trundle

Abstract

A double-drive linkage double-brake trundle comprises a fixed shaft, a rolling wheel, a wheel frame, a brake frame, a front treading driving part, a rear treading driving part, a linkage shaft, two linkage plates, a first spring, a shaft brake rod, a second spring, a universal vertical shaft and a shaft brake disc, the shaft brake rod is in sliding fit with a rod moving hole, and a shaft hinge part is hinged to a shaft hole of a vertical shaft seat; the brake frame is in sliding fit with the guide cavity, the fixed shaft is in sliding fit with the longitudinal guide hole, the brake rod part extends into the counter bore from the rod guide hole, and the arc-shaped brake pad extends out of the guide stop groove and is matched with the brake wheel ring; the rear connecting rod part and the front connecting rod part are matched with the end guide grooves in the rear end and the front end respectively, one ends of two linkage plates are pivoted with the linkage shaft, and the other end of one linkage plate and the two ends, hinged to the linkage shaft, of the rear half shaft and the front half shaft are matched with the left longitudinal guide groove and the right longitudinal guide groove respectively; and the rear transmission brake part and the front transmission brake part are respectively matched with the left brake conversion device and the right brake conversion device. And one wheel is always located in the space outside the undercarriage to perform wheel shaft double-brake operation, so that the use is convenient.

Description

Technical Field

[0001] The utility model relates to a universal caster. Background Art

[0002] The current existing technology, Chinese patent 202223400220.2, a shaft wheel double brake caster, which includes a wheel frame, a roller, a fixed shaft, a brake frame, a pedal drive part, a first spring, a shaft brake rod, a second spring, a universal vertical shaft and a shaft brake disc, the shaft brake rod and the rod movable hole are slidably matched, the circular baffle is embedded in the brake frame, the second spring is matched with the top of the brake frame and the spring seat, and the bottom spring column is inserted into the first spring; the shaft hinge part passes through the circular hole, the multi-prism connecting part is embedded in the multi-prism hole, the shaft hinge part is hinged with the shaft hole of the vertical shaft seat, and the shaft brake disc is rotatably matched with the countersunk hole at the upper end of the vertical shaft seat; the brake frame is slidably matched with the guide cavity, the fixed shaft is fixed with the fixed shaft hole and slidably matched with the longitudinal guide hole, the brake rod part extends out of the rod guide hole, and the first spring is matched with the top spring column; the transmission brake part is pivoted with the fixed shaft, and the connecting rod part is slidably matched with the side guide groove and the guide stop groove; when the brake is in action, the junction of the connecting rod part and the arc-shaped driving part is matched with the driving surface to stop. The problem is that there is only one pedal drive unit. When in use, the wheel frame rotates and the pedal drive unit is hidden in the bottom of the wheel disc, so the brake cannot be operated, which is inconvenient to use. Utility Model Content

[0003] The utility model aims to provide a double-drive linkage double-brake caster, which has a front pedal drive part and a rear pedal drive part which are linked and easy to use.

[0004] The utility model is realized as follows: a dual-drive linkage dual-brake caster, which is special in that it includes a fixed axis, a roller, a wheel frame, a brake frame, a front pedal drive unit, a rear pedal drive unit, a linkage axis, two linkage plates, a first spring, an axis brake rod, a second spring, a universal vertical axis and an axis brake disc.

[0005] The wheel frame has a lower opening, including a vertical shaft seat, a fixed shaft hole, a guide cavity, a top spring column, a rod guide hole and a guide stop groove, and the vertical shaft seat is provided with a shaft hole and a countersunk hole;

[0006] A brake wheel ring is provided on the roller, and brake teeth are provided on the brake wheel ring;

[0007] The brake frame is hollow with a lower opening, including a rod movable hole, a bottom spring column, a left brake conversion device, a right brake conversion device, a longitudinal guide hole, a left longitudinal guide groove, a right longitudinal guide groove, an end guide groove and an arc-shaped brake pad, and the arc-shaped brake pad is provided with a brake tooth;

[0008] The front pedal driving part comprises a front transmission brake part, a front connecting rod part and an arc-shaped driving part, and the front transmission brake part is provided with a front axle hole and a front half axle;

[0009] The rear pedal driving part comprises a rear transmission brake part, a rear connecting rod part and a rear driving part, and the rear transmission brake part is provided with a rear axle hole and a rear half axle;

[0010] The shaft brake lever comprises a circular baffle, a spring seat and a brake lever portion.

[0011] The universal vertical shaft includes a threaded connection part, a polygonal connection part and a shaft hinge part.

[0012] The shaft brake disc is provided with polygonal holes, round holes and a plurality of brake rod holes;

[0013] The axial brake rod is slidably matched with the movable hole of the rod, the circular baffle is embedded in the brake frame, the second spring is matched with the top of the brake frame and the spring seat, and the bottom spring column is inserted into the first spring; the axial hinge part passes through the circular hole, the multi-sided connecting part is embedded with the multi-sided hole, the axial hinge part is hinged with the axial hole of the vertical shaft seat, and the axial brake disc is rotatably matched with the countersunk hole at the upper end of the vertical shaft seat; the brake frame is slidably matched with the guide cavity, the fixed shaft is fixed with the fixed shaft hole and slidably matched with the longitudinal guide hole, the brake rod part extends from the rod guide hole into the countersunk hole, and the first spring is matched with the top spring column; the arc-shaped brake pad is inserted from the guide stop groove The rear pedal driving part and the front pedal driving part are arranged on the left and right, the front axle hole and the rear axle hole are rotatably matched with the fixed axis, the rear connecting rod part and the front connecting rod part are respectively slidably matched with the end guide groove at the rear end and the end guide groove at the front end, one end of the two linkage plates is pivotally connected to the linkage shaft, the other end of one linkage plate is hinged to the rear half shaft, and the other end of the other linkage plate is hinged to the front half shaft, and the two ends of the linkage shaft are respectively slidably matched with the left longitudinal guide groove and the right longitudinal guide groove; the rear transmission brake part and the front transmission brake part are respectively matched with the left brake conversion device and the right brake conversion device.

[0014] The dual-drive linkage dual-brake caster is special in that the brake frame includes a left half frame and a right half frame.

[0015] The left half frame has a right opening, including a left half rod movable hole, a left bottom spring column, a left brake conversion device, a longitudinal guide hole arranged on the left wall plate, a left longitudinal guide groove, a left half end guide groove and an arc-shaped brake pad.

[0016] The right half frame has a right opening, including a right half rod movable hole, a right bottom spring column, a right brake conversion device, a longitudinal guide hole arranged on the right wall plate, a right longitudinal guide groove, a right half end guide groove and an arc-shaped brake pad.

[0017] The left half frame and the right half frame are buckled together to form a brake frame.

[0018] The dual-drive linked dual-brake caster is special in that a guide groove is provided on the wheel frame, and the arc-shaped driving part is slidably matched with the guide groove.

[0019] The dual-drive linkage dual-brake caster is special in that a foot pedal is provided on the arc-shaped driving part.

[0020] The dual-drive linkage dual-brake caster is special in that a reinforcing rib plate is provided on the front connecting rod part and the arc-shaped driving part, and the reinforcing rib plate cooperates with the supporting surface to stop when braking.

[0021] The dual-drive linkage dual-brake caster is special in that a rear reinforcing rib plate is arranged on the rear connecting rod portion, and the rear reinforcing rib plate cooperates with the supporting surface to stop when braking.

[0022] The dual-drive linkage dual-brake caster is special in that: the rear brake conversion device and the front brake conversion device include a brake release surface, an arc-shaped guide drive surface and a brake surface;

[0023] The rear transmission brake part cooperates with the brake release surface of the rear brake conversion device to be in the driving state, the rear transmission brake part cooperates with the arc-shaped guide driving surface to drive the brake frame, and the rear transmission brake part cooperates with the brake surface to be in the braking state.

[0024] The front transmission brake part cooperates with the brake release surface of the front brake conversion device to be in the driving state, the front transmission brake part cooperates with the arc-shaped guide driving surface to drive the brake frame in a sliding manner, and the front transmission brake part cooperates with the brake surface to be in the braking state.

[0025] The utility model discloses a double-drive linked double-brake caster, wherein a front pedal driving part and a rear pedal driving part are arranged, and no matter the front end and the rear end of the wheel frame are hidden in the space under the undercarriage, there is always a space outside the undercarriage, so that the double brake operation of the wheel axle is performed, and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the utility model.

[0027] Figure 2 yes Figure 1 A-A view of.

[0028] Figure 3 It is a partial front view of the utility model.

[0029] Figure 4 It is a partial plane exploded view of the utility model.

[0030] Figure 5 It is one of the three-dimensional exploded views of the utility model.

[0031] Figure 6 This is the second three-dimensional exploded view of the present utility model.

[0032] Figure 7 This is the third three-dimensional exploded view of the present utility model.

[0033] Figure 8 This is the fourth three-dimensional exploded view of the present utility model.

[0034] Fig. 9 It is a stereogram of the utility model. DETAILED DESCRIPTION

[0035] like Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, a dual-drive linkage dual-brake caster includes a fixed axis 1, two rollers 2, a wheel frame 3, a brake frame 4, a front pedal drive unit 5, a rear pedal drive unit 6, a linkage axis 7, two linkage plates 8, a first spring 91, an axle brake rod 10, a second spring 92, a universal vertical axis 11 and an axle brake disc 12.

[0036] The wheel frame 3 is hollow and has a lower opening, including a vertical shaft seat 31, a fixed shaft hole, a guide cavity 32 provided on the two side wall plates, a top spring column 33 provided in the top, a rod guide hole 34 provided on the top plate and a guide stop groove 35 provided at the lower end of the two side walls. The vertical shaft seat 31 is provided with a shaft hole 311 and a countersunk hole 312 located at the top, and the rod guide hole 34 extends into the countersunk hole 312 of the vertical shaft seat 31;

[0037] The roller 2 is provided with a brake wheel ring 21, and the outer circumferential surface of the brake wheel ring 21 is provided with brake teeth;

[0038] The brake frame 4 is hollow with a lower opening, including a rod movable hole 41, a bottom spring column 42 arranged at the top, a left brake conversion device arranged at the rear end of the left side of the top plate, a right brake conversion device arranged at the front end of the right side of the top plate, longitudinal guide holes 43 on the side wall panels, a left longitudinal guide groove 44 arranged at the lower part of the left wall panel, a right longitudinal guide groove 45 arranged at the lower part of the right wall panel, end guide grooves 46 arranged at the front and rear ends, and an arc-shaped brake pad 47, and the arc-shaped brake pad 47 is provided with a brake tooth;

[0039] The front pedal driving part 5 comprises a front transmission brake part 51, a front connecting rod part 52 and an arc-shaped driving part 53. The front transmission brake part 51 is provided with a front axle hole and a front half axle 511.

[0040] The rear pedal driving part 6 includes a rear transmission brake part 61, a rear connecting rod part 62 and a rear driving part 63. The rear transmission brake part 61 is provided with a rear axle hole and a rear half axle 611. The inner side surface of the rear driving part 63 is in an arc shape and corresponds to the vertical axle seat 31 of the wheel frame 3 with a gap.

[0041] The shaft brake lever 10 comprises a circular baffle 101, a spring seat 102 and a brake lever portion 103.

[0042] The universal vertical shaft 11 includes a threaded connection portion 111, a polygonal connection portion 112 and an axis hinge portion 113, wherein the polygonal connection portion 112 is in the shape of a regular hexagonal prism; the rotating tool cooperates with the polygonal connection portion 112 to drive the universal vertical shaft 11 to rotate;

[0043] The shaft brake disc 12 is provided with a polygonal hole 121, a round hole 122 and a plurality of brake rod holes 123;

[0044] The shaft brake rod 10 is slidably matched with the rod movable hole 41, the circular baffle 101 is embedded in the brake frame 4 and is stopped with the top plate of the brake frame 4, the second spring 92 is matched with the top of the brake frame 4 and the spring seat 102, and the bottom spring column 42 is inserted into the first spring 91; the shaft hinge 113 passes through the round hole 122 of the shaft brake disc 12, the polygonal connecting part 112 is embedded with the polygonal hole 121, the shaft hinge 113 is hinged with the shaft hole 311 of the vertical shaft seat 31, and the shaft brake disc 12 is rotatably matched with the countersunk hole 312 at the upper end of the vertical shaft seat 31; the brake frame 4 is slidably matched with the guide cavity 32, the fixed axis 1 is fixed with the fixed axis hole and is slidably matched with the longitudinal guide hole 43, and the brake rod part 103 extends from the rod guide hole 34 into the countersunk hole 312 and corresponds to the brake rod hole 123. The first spring 91 cooperates with the top spring column 33; the arc-shaped brake pad 47 extends from the guide stop groove 35 and cooperates with the brake wheel ring 21; the rear pedal drive part 6 and the front pedal drive part 5 are arranged left and right, the front axle hole and the rear axle hole are rotationally matched with the fixed axis 1, the rear connecting rod part 62 and the front connecting rod part 52 are respectively slidably matched with the end guide groove 46 at the rear end and the end guide groove 46 at the front end, one end of the two linkage plates 8 is pivotally connected to the linkage shaft 7, the other end of one linkage plate 8 is hinged to the rear half shaft 611, and the other end of the other linkage plate 8 is hinged to the front half shaft 511, and the two ends of the linkage shaft 7 are respectively slidably matched with the left longitudinal guide groove 44 and the right longitudinal guide groove 45; the rear transmission brake part 61 and the front transmission brake part 51 are respectively matched with the left brake conversion device and the right brake conversion device.

[0045] As a further improvement of the utility model: Figure 5 As shown, the brake frame 4 includes a left half frame 4A and a right half frame 4B.

[0046] The left half frame 4A has a right opening, including a left half rod movable hole, a left bottom spring column, a left brake conversion device, a longitudinal guide hole arranged on the left wall plate, a left longitudinal guide groove, a left half end guide groove and an arc-shaped brake pad.

[0047] The right half frame 4B has a right opening, including a right half rod movable hole, a right bottom spring column, a right brake conversion device, a longitudinal guide hole arranged on the right wall plate, a right longitudinal guide groove, a right half end guide groove and an arc-shaped brake pad.

[0048] The left half frame 4A and the right half frame 4B are buckled together to form the brake frame 4.

[0049] As a further improvement of the present invention: a guide groove 36 is provided on the wheel frame 3 , and the arc-shaped driving portion 53 is slidably matched with the guide groove 36 .

[0050] The arc-shaped driving portion 53 is provided with a foot pedal 531 .

[0051] The front connecting rod portion 52 and the arc-shaped driving portion 53 are provided with a reinforcing rib plate 54. When braking, the bottom of the reinforcing rib plate 54 cooperates with the supporting surface to stop.

[0052] The rear connecting rod portion 62 is provided with a rear reinforcing rib plate 64 , which cooperates with the supporting surface to stop when braking.

[0053] like Figure 4 As shown, the rear brake conversion device and the front brake conversion device include a brake release surface 481, an arc-shaped guide drive surface 482 and a brake surface 483;

[0054] The suspended end of the rear transmission brake part 61 cooperates with the brake release surface 481 of the rear brake conversion device and is in the driving state. The rear transmission brake part 61 and the arc-shaped guide driving surface 482 slide and cooperate to drive the brake frame 4. The rear transmission brake part 61 and the brake surface 483 cooperate to be in the braking state.

[0055] The suspended end of the front transmission brake part 51 cooperates with the brake release surface 481 of the front brake conversion device and is in the driving state. The front transmission brake part 51 and the arc-shaped guide driving surface 482 slide and cooperate to drive the brake frame 4. The front transmission brake part 51 and the brake surface 483 cooperate to be in the braking state.

[0056] Figure 1 , Figure 4 , Fig. 9 In the driving state of the utility model, when braking is required, the foot pedal 531 is stepped on, the front pedal driving part 5 rotates clockwise, and the front connecting rod part 52 moves in the front end guide groove 46; the end of the suspended end of the front transmission brake part 51 slides with the arc-shaped guide driving surface 482, and during the sliding process, the brake frame 4 gradually rises, and the first spring 91 is compressed; when the end of the suspended end reaches the brake surface 483, the brake teeth of the arc-shaped brake pad 47 mesh with the brake teeth of the brake wheel ring 21, and at the same time, the shaft brake rod 10 moves upward, the spring seat 102 cooperates with the top plate of the inner cavity of the wheel seat 3 to compress the second spring 2, and the brake rod part 103 is engaged with the brake rod hole 123 on the shaft brake disc 12;

[0057] While the front pedal driving unit 5 rotates clockwise, the rear pedal driving unit 6 rotates counterclockwise, the suspended end of the rear transmission brake unit 61 cooperates with the rear brake conversion device, and the linkage shaft 7 moves downward in the left longitudinal guide groove 44 and the right longitudinal guide groove 45.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dual-drive linkage dual-brake caster, characterized in that: It includes a fixed axis, a roller, a wheel frame, a brake frame, a front pedal drive unit, a rear pedal drive unit, a linkage axis, two linkage plates, a first spring, an axis brake rod, a second spring, a universal vertical axis and an axis brake disc. The wheel frame has a lower opening, including a vertical shaft seat, a fixed shaft hole, a guide cavity, a top spring column, a rod guide hole and a guide stop groove, and the vertical shaft seat is provided with a shaft hole and a countersunk hole; A brake wheel ring is provided on the roller, and brake teeth are provided on the brake wheel ring; The brake frame is hollow with a lower opening, including a rod movable hole, a bottom spring column, a left brake conversion device, a right brake conversion device, a longitudinal guide hole, a left longitudinal guide groove, a right longitudinal guide groove, an end guide groove and an arc-shaped brake pad, and the arc-shaped brake pad is provided with a brake tooth; The front pedal driving part comprises a front transmission brake part, a front connecting rod part and an arc-shaped driving part, and the front transmission brake part is provided with a front axle hole and a front half axle; The rear pedal driving part comprises a rear transmission brake part, a rear connecting rod part and a rear driving part, and the rear transmission brake part is provided with a rear axle hole and a rear half axle; The shaft brake lever comprises a circular baffle, a spring seat and a brake lever portion. The universal vertical shaft includes a threaded connection part, a polygonal connection part and a shaft hinge part. The shaft brake disc is provided with polygonal holes, round holes and a plurality of brake rod holes; The axial brake rod is slidably matched with the movable hole of the rod, the circular baffle is embedded in the brake frame, the second spring is matched with the top of the brake frame and the spring seat, and the bottom spring column is inserted into the first spring; the axial hinge part passes through the circular hole, the multi-sided connecting part is embedded with the multi-sided hole, the axial hinge part is hinged with the axial hole of the vertical shaft seat, and the axial brake disc is rotatably matched with the countersunk hole at the upper end of the vertical shaft seat; the brake frame is slidably matched with the guide cavity, the fixed shaft is fixed with the fixed shaft hole and slidably matched with the longitudinal guide hole, the brake rod part extends from the rod guide hole into the countersunk hole, and the first spring is matched with the top spring column; the arc-shaped brake pad is inserted from the guide stop groove The rear pedal driving part and the front pedal driving part are arranged on the left and right, the front axle hole and the rear axle hole are rotatably matched with the fixed axis, the rear connecting rod part and the front connecting rod part are respectively slidably matched with the end guide groove at the rear end and the end guide groove at the front end, one end of the two linkage plates is pivotally connected to the linkage shaft, the other end of one linkage plate is hinged to the rear half shaft, and the other end of the other linkage plate is hinged to the front half shaft, and the two ends of the linkage shaft are respectively slidably matched with the left longitudinal guide groove and the right longitudinal guide groove; the rear transmission brake part and the front transmission brake part are respectively matched with the left brake conversion device and the right brake conversion device.

2. The dual-drive linkage dual-brake caster according to claim 1, characterized in that: The brake frame includes a left half frame and a right half frame, The left half frame has a right opening, including a left half rod movable hole, a left bottom spring column, a left brake conversion device, a longitudinal guide hole arranged on the left wall plate, a left longitudinal guide groove, a left half end guide groove and an arc-shaped brake pad. The right half frame has a right opening, including a right half rod movable hole, a right bottom spring column, a right brake conversion device, a longitudinal guide hole arranged on the right wall plate, a right longitudinal guide groove, a right half end guide groove and an arc-shaped brake pad. The left half frame and the right half frame are buckled together to form a brake frame.

3. The dual-drive linkage dual-brake caster according to claim 1, characterized in that: The wheel frame is provided with a guide groove, and the arc-shaped driving part is slidably matched with the guide groove.

4. The dual-drive linkage dual-brake caster according to claim 3, characterized in that: The arc-shaped driving part is provided with a foot pedal.

5. The dual-drive linkage dual-brake caster according to claim 1, characterized in that: The front connecting rod part and the arc-shaped driving part are provided with reinforcing rib plates, and the reinforcing rib plates cooperate with the supporting surface to stop when braking.

6. The dual-drive linkage dual-brake caster according to claim 1, characterized in that: The rear connecting rod portion is provided with a rear reinforcing rib plate, and the rear reinforcing rib plate cooperates with the supporting surface to stop when braking.

7. A dual-drive linkage dual-brake caster according to claim 1, 2, 3, 4, 5 or 6, characterized in that: The left brake conversion device and the right brake conversion device include a brake release surface, an arc-shaped guide drive surface and a brake surface; The rear transmission brake part cooperates with the brake release surface of the left brake conversion device to be in the driving state, the rear transmission brake part cooperates with the arc-shaped guide driving surface to drive the brake frame, and the rear transmission brake part cooperates with the brake surface to be in the braking state; The front transmission brake part cooperates with the brake release surface of the right brake conversion device to be in the driving state, the front transmission brake part cooperates with the arc-shaped guide driving surface to drive the brake frame in a sliding manner, and the front transmission brake part cooperates with the brake surface to be in the braking state.

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