CN111959198A

CN111959198A - Roller part

Info

Publication number: CN111959198A
Application number: CN202010871201.4A
Authority: CN
Inventors: 辛海勇
Original assignee: Individual
Current assignee: Zhejiang Kaitai New Energy Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-20
Anticipated expiration: 2040-08-26
Also published as: CN111959198B

Abstract

The invention discloses a roller member, which comprises a base block, a roller shaft, a roller and a roller frame, wherein the roller frame is arranged at the bottom of an object, the head end of the roller shaft is pivoted with the roller frame, the tail end of the roller shaft is pivoted with the base block, the roller is arranged on the roller shaft, a turntable is fixed on the roller shaft, a gear ring is arranged on the turntable and is meshed with a gear, a gear braking mechanism is arranged beside the gear, the gear braking mechanism comprises a friction braking part and a supporting platform, and the friction braking part is movably matched on the supporting platform; the base block is pivoted with a rotary drum, a convex part is arranged on the inner side wall of the rotary drum, the friction braking part is positioned in the rotary drum, and the convex part can act on the friction braking part to enable the friction braking part to slide along the supporting platform to be in friction contact with the gear. The invention realizes the locking and unlocking of the roller by intermittently rotating the rotary drum along the same direction, and provides convenience for users to stop and move objects.

Description

Roller part

Technical Field

The invention relates to hardware, in particular to a roller piece arranged at the bottom of a to-be-moved object, such as a doctor workstation.

Background

In the process of diagnosis and ward round, doctors often need to look up medical history records of patients and issue medical advice and other work according to the state of an illness. Patent document No. 201320472711.X discloses a computer height adjustment mechanism for an intelligent mobile doctor workstation. As can be seen from the attached figure 1 of the patent document, the bottom of the doctor workstation is provided with a roller, the top of the roller is provided with a brake shifting block, the roller is braked and is reset upwards according to the common knowledge, and the roller can roll freely. The user steps on the brake plectrum by feet, and the brake plectrum is pressed down; the user lifts the brake shifting block by the tiptoe, and the brake shifting block resets upwards. The foot is large in force and is not easy to control like a hand when the brake plectrum is stepped on by the foot, and the brake plectrum is easy to be stepped on; the brake plectrum is picked up to the tiptoe, requires the tiptoe to stretch into between the clearance of brake plectrum and gyro wheel, and the brake plectrum is picked up again hard, so, need the user to pay great effort and can succeed in accomplishing.

Disclosure of Invention

The technical problems solved by the invention are as follows: the roller of the moving object can be conveniently locked and unlocked.

In order to solve the technical problems, the invention provides the following technical scheme: a roller member comprises a base block, a roller shaft, a roller and a roller frame, wherein the roller frame is arranged at the bottom of an object, the head end of the roller shaft is pivoted with the roller frame, the tail end of the roller shaft is pivoted with the base block, the roller is arranged on the roller shaft, a turntable is fixed on the roller shaft, a gear ring is arranged on the turntable and is meshed with a gear, a gear braking mechanism is arranged beside the gear, the gear braking mechanism comprises a friction braking part and a supporting platform, and the friction braking part is movably matched on the supporting platform; the base block is pivoted with a rotary drum, a convex part is arranged on the inner side wall of the rotary drum, the friction braking part is positioned in the rotary drum, and the convex part can act on the friction braking part to enable the friction braking part to slide along the supporting platform to be in friction contact with the gear.

According to the technical scheme, initially, the gear is meshed with the gear ring, the friction braking part is not in contact with the convex part, the object moves, the roller rolls on the ground, the turntable and the gear ring on the turntable are driven, and the gear ring drives the gear to rotate. Since the friction braking portion is not in contact with the gear, the roller can rotate freely.

When the roller needs to be braked, a user takes the heel as an axis to tilt the toe, the half sole acts on the outer side wall of the rotary drum and moves the rotary drum downwards until the sole is completely contacted with the ground. The rotating drum driven by the foot disc rotates by a corresponding angle, the convex part in the rotating drum acts on the friction braking part to drive the friction braking part to linearly slide along the supporting platform, the friction braking part is in friction contact with the gear, the degree of freedom of the gear is limited and does not rotate any more, accordingly, the gear ring and the roller shaft do not rotate any more, and the roller is braked.

When the braking of the roller needs to be relieved, the user's foot turns the rotary drum to rotate by a corresponding angle along the original direction in the above mode, the convex part is separated from the contact with the friction braking part, the gear is not braked any more, and accordingly, the roller recovers the degree of freedom and can rotate freely.

The quantity of convex part is N, and N convex part is along the circumferencial direction evenly distributed of rotary drum, has the clearance between every two adjacent convex parts. If the roller needs to be braked again, the user's foot turns the rotating drum to rotate by a corresponding angle along the original direction in the above way, so that the next convex part in the circumferential direction is contacted with the friction braking part, and the roller is braked again.

When the friction braking part is not in contact with the convex part, a user pushes the object, the roller wheel rotates freely, the free rotation is limited properly due to the meshing of the gear ring and the gear, the object cannot actively roll on uneven ground due to gravity because of the flexible rotation, and the object is prevented from moving uncontrollably.

The invention realizes the locking and unlocking of the roller by intermittently rotating the rotary drum along the same direction, and provides convenience for users to stop and move objects.

Drawings

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic view of a roller element;

FIG. 2 is a rear view of a roller member of FIG. 1;

FIG. 3 is a schematic view of the roller 30 shown in FIG. 1 after being hidden;

FIG. 4 is a schematic view of the drum 60 of FIG. 3 shown hidden;

fig. 5 is an enlarged view of a portion a in fig. 4.

The symbols in the drawings illustrate that:

10. a base block;

20. a roller shaft;

30. a roller;

40. a roller frame;

50. a turntable; 51. a ring gear; 52. a gear; 520. a gear shaft; 53. a friction braking portion; 531. a slider; 532. a brake pad; 54. a support platform; 541. a chute; 55. a guide block; 550. a guide hole;

60. a rotating drum; 61. a convex portion; 62. a pedal block;

70. an auxiliary shaft.

Detailed Description

Referring to fig. 1 to 5, a roller member comprises a base block 10, a roller shaft 20, a roller 30, and a roller frame 40, wherein the roller frame is installed at the bottom of an object (such as a doctor workstation), the head end of the roller shaft is pivoted with the roller frame, the tail end of the roller shaft is pivoted with the base block, the roller is installed on the roller shaft, a turntable 50 is fixed on the roller shaft, a gear ring 51 is arranged on the turntable, the gear ring is meshed with a gear 52, a gear braking mechanism is arranged beside the gear, the gear braking mechanism comprises a friction braking part 53 and a supporting platform 54, and the friction braking part is movably matched on the supporting platform; the base block is pivoted with a rotary drum 60, the inner side wall of the rotary drum is provided with a convex part 61, the friction braking part is positioned in the rotary drum, and the convex part can act on the friction braking part to enable the friction braking part to slide along the supporting platform to be in friction contact with the gear. The parts used for the pivoting are bearings. The user uses the half sole to drive the rotating drum to enable the convex part to be in contact with the friction braking part, and the convex part drives the friction braking part to brake the gear so as to brake the roller; when the degree of freedom of the roller needs to be restored, the user drives the rotating drum in the same direction in the same way, the convex part is separated from the contact with the friction braking part, and the return spring between the friction braking part and the supporting platform acts on the friction braking part to return the friction braking part to be separated from the contact with the gear, so that the degree of freedom of the roller is restored.

The base block is provided with an auxiliary shaft 70, and the auxiliary shaft and the roller shaft 20 are pivoted on the roller frame 40.

The gear 52 is mounted on a gear shaft 520 which is pivoted on the support platform 54; the tail end of the gear shaft is provided with a conical blind hole, the friction braking part 53 comprises a sliding block 531 and a braking block 532, the braking block is arranged on the sliding block, the braking block is conical and can be matched with the conical blind hole, and the sliding block is movably matched on the supporting platform; the tail of the slider protrudes rearwardly beyond the support platform, and the protrusion 61 is able to contact the tail of the slider. The convex part acts on the sliding block, the sliding block moves linearly along the supporting platform, the brake block is inserted into the conical blind hole and is in close contact with the conical blind hole, the gear shaft is braked, and then the gear brakes the roller.

And a guide block 55 is arranged behind the tail end of the gear shaft 520 and fixed on the supporting platform 54, and is provided with a conical guide hole 550 which can be matched with the brake block 532. The guide hole is matched with the brake block to be arranged in the conical blind hole for guiding, so that the periphery of the brake block is ensured to be in full contact with the inner side wall of the conical blind hole, and the braking effect of the gear shaft is improved.

The supporting platform 54 is provided with a convex sliding groove 541, and the sliding block 531 is convex and is matched in the sliding groove. And a reset spring is arranged in the sliding groove and used for resetting the sliding block. The tail part of the sliding block protrudes out of the sliding groove.

The gear ring 51 is a bevel gear ring, and the gear 52 is a bevel gear. By adopting the conical gear ring and the conical gear, the power is transferred at right angles, and compared with straight teeth, the free rolling of the roller can be limited to a certain degree, and the roller is prevented or limited from automatically rolling out of control under the gravity or inertia effect of a doctor workstation.

The number of the convex parts 61 is N, the N convex parts are uniformly distributed along the circumferential direction of the rotary drum 60, and a gap is formed between every two adjacent convex parts; the lateral wall of the rotary drum is provided with triangular pedal blocks 62, the number of the pedal blocks is 2N, and the 2N pedal blocks are uniformly distributed along the circumferential direction of the rotary drum. The projections of every two adjacent pedal blocks on the inner side wall of the rotary drum are respectively arranged on the convex parts and in the gap between every two adjacent convex parts. In actual operation, a user's front sole downwardly steps on one pedal block until the front sole is separated from the pedal block and touches the ground, the process makes the drum rotate, the tail part of the sliding block is changed from being located in a gap between two adjacent convex parts to being in contact with one convex part, and then the gear shaft is braked by the brake block. The user's sole is stepped on a pedal piece downwards, breaks away from and the sole lands with this pedal piece until the sole, and this process makes the rotary drum rotate, the afterbody of sliding block is changed into by contacting with a convex part and is located between two adjacent convex parts next, and then, the brake pads does not refabricate gear shaft again, and the gyro wheel can freely roll.

Claims

1. The utility model provides a roller member, includes basic block (10), roller shaft (20), gyro wheel (30), gyro wheel frame (40), and the gyro wheel frame is installed in the bottom of object, and the head end and the gyro wheel frame pin joint of roller shaft, the tail end and the basic block pin joint of roller shaft, the gyro wheel is installed on the roller shaft, its characterized in that: a turntable (50) is fixed on the roller shaft, a gear ring (51) is arranged on the turntable and is meshed with a gear (52), a gear braking mechanism is arranged beside the gear, the gear braking mechanism comprises a friction braking part (53) and a supporting platform (54), and the friction braking part is movably matched on the supporting platform;

the base block is pivoted with a rotary drum (60), the inner side wall of the rotary drum is provided with a convex part (61), the friction braking part is positioned in the rotary drum, and the convex part can act on the friction braking part to enable the friction braking part to slide along the supporting platform to be in friction contact with the gear.

2. A roller member according to claim 1, wherein: the gear (52) is arranged on a gear shaft (520), and the gear shaft is pivoted on the supporting platform (54);

the tail end of the gear shaft is provided with a conical blind hole, the friction braking part (53) comprises a sliding block (531) and a braking block (532), the braking block is arranged on the sliding block, the braking block is conical and can be matched with the conical blind hole, and the sliding block is movably matched on the supporting platform;

the tail of the sliding block protrudes backwards from the support platform, and the convex part (61) can be contacted with the tail of the sliding block.

3. A roller member according to claim 2, wherein: and a guide block (55) is arranged behind the tail end of the gear shaft (520), is fixed on the supporting platform (54), and is provided with a conical guide hole (550) which can be matched with the brake block (532).

4. A roller member according to claim 2, wherein: a convex sliding groove (541) is formed in the supporting platform (54), the sliding block (531) is convex, and the sliding block is matched in the sliding groove.

5. A roller member according to claim 1, wherein: the gear ring (51) is a bevel gear ring, and the gear (52) is a bevel gear.

6. A roller member according to claim 1, wherein: the number of the convex parts (61) is N, the N convex parts are uniformly distributed along the circumferential direction of the rotary drum (60), and a gap is formed between every two adjacent convex parts;

the lateral wall of the rotary drum is provided with triangular pedal blocks (62), the number of the pedal blocks is 2N, and the 2N pedal blocks are uniformly distributed along the circumferential direction of the rotary drum.