CN218929434U

CN218929434U - Foot-operated parking braking device and doctor console

Info

Publication number: CN218929434U
Application number: CN202320203848.9U
Authority: CN
Inventors: 董刚; 冯海生; 苏衍宇
Original assignee: Harbin Sagebot Intelligent Medical Equipment Co Ltd
Current assignee: Harbin Sagebot Intelligent Medical Equipment Co Ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-04-28
Anticipated expiration: 2033-02-14

Abstract

The utility model provides a foot-operated parking brake device and a doctor console, and relates to the technical field of mechanical braking, wherein the foot-operated parking brake device comprises a foot pedal mechanism and a first pull rod, wherein one end part of the first pull rod is hinged to the foot pedal; the middle transmission mechanism comprises a middle transmission piece, a transmission shaft and a first bracket, the first bracket is used for being installed on the bottom plate, one end of the transmission shaft is rotatably connected to the first bracket, the other end of the transmission shaft is used for being matched and connected with a hexagonal hole of a castor, the middle transmission piece is connected to the first pull rod, and the middle transmission piece is in transmission connection with the transmission shaft; the self-locking mechanism comprises a spring and a self-locking pull rod, one end of the spring is connected with the middle transmission piece, the other end of the spring is connected with the self-locking pull rod, the self-locking pull rod is rotationally connected with the transmission shaft, and the self-locking pull rod is used for deflecting a calibration angle on the transmission shaft and is clamped on the first bracket. Compared with the prior art, the utility model can improve the stability of the running or locking state of the castor.

Description

Foot-operated parking braking device and doctor console

Technical Field

The utility model relates to the technical field of mechanical braking, in particular to a foot-operated parking braking device and a doctor console.

Background

In the using process of the mobile vehicle, the movement and the stop of the vehicle body are controlled through the casters, so that the position of the vehicle body can be adjusted at any time. For example, universal casters are respectively arranged at four corners of a bottom plate of a doctor console, hexagonal holes are formed in the tops of the universal casters, eccentric structures for enabling the universal casters to brake are arranged in the hexagonal holes, corresponding pedals are arranged on each universal caster, the pedals are required to be stepped on for braking during turning or stopping, and the doctor console is required to ensure stable movement during transferring, however, the conventional caster braking mode does not need self-locking stable measures, and braking failure or sudden braking during walking is easy to be caused when unexpected external force is encountered.

Disclosure of Invention

The utility model aims to solve the problems that: how to improve the stability of the running or locking state of the castor.

The utility model provides a foot-operated parking brake device, which is used for a doctor console, wherein the doctor console comprises a bottom plate and casters arranged on the bottom plate, and the foot-operated parking brake device comprises:

a pedal mechanism comprising a pedal plate and a first pull rod, wherein the pedal plate is used for being hinged to the bottom plate, and one end part of the first pull rod is hinged to the pedal plate;

the middle transmission mechanism comprises a middle transmission part, a transmission shaft and a first bracket, wherein the first bracket is used for being installed on the bottom plate, one end of the transmission shaft is rotatably connected with the first bracket, the other end of the transmission shaft is used for being matched and connected with a hexagonal hole of the caster, the middle transmission part is connected with the first pull rod, the middle transmission part is in transmission connection with the transmission shaft, and the pedal mechanism is used for converting the motion of the pedal mechanism into a walking or locking state of the caster through the middle transmission mechanism;

the self-locking mechanism comprises a spring and a self-locking pull rod, one end of the spring is connected with the middle transmission piece, the other end of the spring is connected with the self-locking pull rod, the self-locking pull rod is rotationally connected with the transmission shaft, and the self-locking pull rod is used for deflecting a calibration angle on the transmission shaft and is clamped to the first bracket.

Compared with the prior art, the pedal type parking brake device provided by the utility model has the following beneficial effects:

the pedal mechanism of the pedal type parking brake device can convert the motion of the pedal mechanism into the running or locking state of the trundles through the intermediate transmission mechanism, and can ensure the stability of the running or locking state of the trundles through the self-locking mechanism, in particular, the pedal of the pedal mechanism can form a high space position and a low space position at the hinging position through stepping, the pedal drives the intermediate transmission member to form angle change through the first pull rod, the intermediate transmission member further drives the transmission shaft to rotate, when the transmission shaft rotates to a certain angle, the eccentric structure in the hexagonal holes of the trundles can cause the trundles to be blocked so as to prevent the trundles from moving, otherwise, the limitation on the trundles can be relieved through stepping the pedal to move to the opposite angle, therefore, the caster wheel is changed in locking-releasing, when the angle of the middle transmission piece is changed, the middle transmission piece pulls the self-locking pull rod to deflect on the transmission shaft through the spring, after the self-locking pull rod deflects to a calibrated angle, the self-locking pull rod is clamped to the first bracket, the self-locking pull rod is not deflected, the spring is always in an extension state, a lifting force is applied to the middle transmission piece, when the pedal is in a walking state or a locking state, the stability of the pedal is higher, braking failure or sudden braking when walking can not be caused by unexpected external force, when a worker steps on the pedal in locking-releasing mode, obvious force feedback change exists under the action of the spring, and the current space relative position of the pedal can be clearly identified when the pedal is operated. Compared with the prior art, the utility model can improve the stability of the running or locking state of the castor.

Optionally, the auto-lock pull rod includes second pull rod and dead lever, the dead lever connect in the second pull rod orientation one side of running-board, spring connect in the dead lever, the second pull rod rotate connect in the transmission shaft, the second pull rod orientation the both sides of first support terminal surface are provided with spacing lug, the second pull rod is used for deflect certain angle on the transmission shaft, and through spacing lug joint in first support.

Optionally, the self-locking mechanism further comprises an adjusting screw, the limiting bump is provided with a threaded hole, and the adjusting screw is in threaded connection with the threaded hole and is used for being abutted to the first bracket.

Optionally, the middle driving part comprises a middle shaft and a connecting rod, the middle shaft is rotatably connected with the first pull rod, one end of the connecting rod is rotatably connected with the middle shaft, and the other end of the connecting rod is connected with the transmission shaft.

Optionally, the pedal mechanism further comprises a rear bracket for mounting on the base plate, and the foot pedal is hinged to the rear bracket.

Optionally, a horizontal limiting part is arranged on one side of the pedal, facing the rear bracket, and the horizontal limiting part is used for being abutted with the rear bracket.

Optionally, the second pull rod is provided with a plurality of positioning holes at intervals along the length direction thereof, and the fixing rod is used for being connected with the positioning holes.

Optionally, the section of the first pull rod is arc-shaped.

Optionally, the transmission shaft is used for being in the hexagon structure with the one end that the truckle is connected, the hexagon structure is used for with the hexagonal hole cooperation of truckle is connected.

In addition, the utility model also provides a doctor console which comprises the foot-operated parking brake device.

Since the technical improvements and technical effects of the doctor console are the same as those of the foot-operated parking brake device, detailed descriptions of the technical effects of the doctor console will not be provided.

Drawings

FIG. 1 is a schematic diagram of a foot-operated parking brake apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a foot-operated parking brake apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic illustration of a foot-operated parking brake apparatus with casters in a running position;

fig. 4 is a schematic structural diagram II of the foot-operated parking brake device when the caster is in a walking state;

FIG. 5 is a schematic view of a foot operated parking brake apparatus with casters in a locked state;

fig. 6 is a schematic diagram II of the foot-operated parking brake device when the caster is in a locked state.

Reference numerals illustrate:

1. a pedal mechanism; 11. a foot pedal; 111. a horizontal limiting member; 12. a first pull rod; 13. a rear bracket; 2. an intermediate transmission mechanism; 21. an intermediate transmission member; 211. a center shaft; 212. a connecting rod; 22. a transmission shaft; 23. a first bracket; 3. a self-locking mechanism; 31. a spring; 32. a self-locking pull rod; 321. a second pull rod; 3211. a limit bump; 322. a fixed rod; 33. adjusting a screw; 100. a bottom plate; 200. casters.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Moreover, in the drawings, the Z axis represents vertical, i.e., up and down, and the positive direction of the Z axis (i.e., the arrow of the Z axis points) represents up, and the negative direction of the Z axis (i.e., the direction opposite to the positive direction of the Z axis) represents down; the X-axis in the drawing represents the lateral direction, i.e., the left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis points) represents the left, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the right; the Y-axis in the drawing shows the longitudinal direction, i.e., the front-to-back position, and the positive direction of the Y-axis (i.e., the arrow pointing in the Y-axis) shows the rear direction, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) shows the front direction.

It should also be noted that the foregoing Z-axis, X-axis, and Y-axis are meant to be illustrative only and to simplify the description of the present utility model, and are not meant to indicate or imply that the devices or elements referred to must be in a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 6, a foot-operated parking brake apparatus according to an embodiment of the present utility model is used for a doctor console including a base plate 100 and casters 200 provided on the base plate 100, and includes:

a pedal mechanism 1 including a pedal plate 11 and a first pull rod 12, the pedal plate 11 being hinged to the base plate 100, one end of the first pull rod 12 being hinged to the pedal plate 11;

the middle transmission mechanism 2 comprises a middle transmission member 21, a transmission shaft 22 and a first bracket 23, wherein the first bracket 23 is used for being installed on the bottom plate 100, one end of the transmission shaft 22 is rotatably connected with the first bracket 23, the other end of the transmission shaft is used for being matched and connected with a hexagonal hole of the caster 200, the middle transmission member 21 is connected with the first pull rod 12, the middle transmission member 21 is in transmission connection with the transmission shaft 22, and the pedal mechanism 1 is used for converting the motion of the pedal mechanism 1 into a walking or locking state of the caster 200 through the middle transmission mechanism 2;

the self-locking mechanism 3 comprises a spring 31 and a self-locking pull rod 32, one end of the spring 31 is connected with the middle transmission piece 21, the other end of the spring is connected with the self-locking pull rod 32, the self-locking pull rod 32 is rotatably connected with the transmission shaft 22, and the self-locking pull rod 32 is used for deflecting a calibration angle on the transmission shaft 22 and is clamped on the first bracket 23.

In the present embodiment, as shown in fig. 1 and 2, the pedal mechanism 1 may convert the movement of the pedal mechanism 1 into a walking or locking state of the caster 200 through the intermediate transmission mechanism 2, and the stability of the walking or locking state of the caster 200 can be ensured by the self-locking mechanism 3, in particular, the pedal plate 11 of the pedal mechanism 1 can be stepped to form a high space position and a low space position (Z direction of the attached figure 1 or the attached figure 2) at the hinged position, the pedal plate 11 drives the intermediate transmission piece 21 to form angle change through the first pull rod 12, the intermediate transmission piece 21 further drives the transmission shaft 22 to rotate, when the drive shaft 22 is rotated to a nominal angle, the eccentric configuration within the hexagonal hole in the caster 200 causes the caster 200 to lock, rendering it immovable, and vice versa, by stepping on the foot pedal 11 to move in the opposite direction, the restriction of the caster 200 can be released, so that the castor 200 forms a lock-release change, which, when the intermediate transmission 21 is angularly changed, the intermediate transmission member 21 pulls the self-locking pull rod 32 to deflect on the transmission shaft 22 through the spring 31, when the self-locking pull rod 32 deflects to a certain angle, the self-locking pull rod 32 is clamped with the first bracket 23, so that the self-locking pull rod is not deflected any more, the spring 31 is always in an extension state, and a lifting force is applied to the intermediate transmission piece 21, when the foot pedal 11 is in the walking state or the locking state, the stability is higher, and the unexpected external force is not caused, and causes a brake failure or abrupt braking when walking, when the worker steps on the lock-release pedal 11, there is a significant force feedback change under the action of the spring 31, and the current spatial relative position of the foot pedal 11 when performing the motion can be clearly identified. The present utility model can improve the stability of the walking or locking state of the caster 200 compared to the prior art.

In the above-mentioned operation, referring to fig. 1 and 2, the first bracket 23 may be mounted on the base plate 100 by bolts, the transmission shaft 22 may be rotatably connected to the first bracket 23 by bearings, the pedal mechanism 1 may be placed between two casters 200, the transmission shafts 22 are respectively connected to two sides of the intermediate transmission member 21 in a transmission manner, and the two transmission shafts 22 are correspondingly connected to hexagonal holes on the casters 200, so that two casters 200 may be simultaneously controlled by one pedal 11.

Optionally, the self-locking pull rod 32 includes a second pull rod 321 and a fixing rod 322, the fixing rod 322 is connected to one side of the second pull rod 321 facing the pedal 11, the spring 31 is connected to the fixing rod 322, the second pull rod 321 is rotatably connected to the transmission shaft 22, two sides (X-axis direction of fig. 1 or fig. 2) of the second pull rod 321 facing the end face of the first bracket 23 are provided with limiting protrusions 3211, and the second pull rod 321 is used for deflecting a certain angle on the transmission shaft 22 and is clamped to the first bracket 23 through the limiting protrusions 3211.

In this embodiment, as shown in fig. 1 and fig. 2, the fixing rod 322 may be connected to the second pull rod 321 through a bolt, the upper end (in the positive direction of the Z axis in fig. 1 or fig. 2) of the spring 31 may be hung at the end of the fixing rod 322, the lower end (in the negative direction of the Z axis in fig. 1 or fig. 2) of the spring 31 may be hung on the intermediate transmission member 21, the two sides (in the positive direction of the X axis in fig. 1 or fig. 2) of the left end surface (in fig. 1 or fig. 2) of the second pull rod 321 are provided with limit lugs 3211, the limit lugs 3211 may be welded or integrally formed with the second pull rod 321, when the pedal plate 11 is stepped on by a worker, for example, as shown in fig. 3 and fig. 4, the pedal plate 11 is in a horizontal state, the intermediate transmission member 21 is deflected toward the front end (in the negative direction of the Y axis in fig. 1 or fig. 2), the second pull rod 321 is also deflected toward the front end through the spring 31, and the second pull rod 321 is clamped to the second pull rod 321 is not pulled toward the middle of the pedal plate 21, and no longer is expected to be in a stable state when the pedal plate 11 is pulled or is not pulled, and is not in a stable state, or is not in a stable state, and is caused to be in a state when the brake is applied. In addition, referring to fig. 4 and 5, when the foot rest 11 is in a depressed state and the lower end of the foot rest 11 contacts with the bottom plate 100, the intermediate transmission member 21 deflects toward the rear end (the Y-axis positive direction in fig. 1 or 2), the intermediate transmission member 21 pulls the second pull rod 321 by the spring 31 to deflect back and forth, and after the second pull rod 321 deflects to a certain angle, the second pull rod 321 is clamped to the first bracket 23 by the limiting bump 3211, so that the second pull rod is not deflected any more.

Optionally, the self-locking mechanism 3 further includes an adjusting screw 33, the limiting bump 3211 is provided with a threaded hole, and the adjusting screw 33 is screwed to the threaded hole and is used for abutting against the first bracket 23.

In this embodiment, referring to fig. 1, the adjusting screw 33 may be screwed to the threaded hole of the limiting bump 3211, and the adjusting screw 33 may adjust the limiting angle between the second pull rod 321 and the first bracket 23, so as to adjust the installation gap between the second pull rod 321 and the first bracket 23, thereby compensating the installation gap and adjusting the initial pre-tightening force of the spring 31.

Alternatively, the intermediate transmission member 21 includes a central shaft 211 and a link 212, the central shaft 211 is rotatably connected to the first pull rod 12, one end of the link 212 is rotatably connected to the central shaft 211, and the other end is connected to the transmission shaft 22.

In this embodiment, as shown in fig. 2, the middle shaft 211 may be connected to the end of the first pull rod 12 through a bearing, the connecting rod 212 may be rotatably connected to the middle shaft 211 through a bearing, the connecting rod 212 may be connected to the transmission shaft 22 through a key, so as to play a role in transmission, the pedal 11 may drive the middle shaft 211 to deflect through the first pull rod 12, the middle shaft 211 may drive the transmission shaft 22 through the connecting rod 212 to rotate, when the transmission shaft 22 rotates to a certain angle, the eccentric structure in the hexagonal hole on the caster 200 may cause the caster 200 to be locked, so that the caster cannot move, otherwise, by stepping on the pedal 11 to move to an opposite angle, the limitation on the caster 200 may be released, so that the caster 200 may form a lock-release change.

Optionally, the pedal mechanism 1 further comprises a rear bracket 13, the rear bracket 13 being adapted to be mounted on the base plate 100, the foot pedal 11 being hinged to the rear bracket 13.

In this embodiment, referring to fig. 2, the rear bracket 13 may be connected to the bottom plate 100 by a bolt, the upper end structure of the rear bracket 13 is integrally inclined (inclined toward the opposite direction of the Y axis in fig. 2), and when the pedal 11 is in a depressed state (as shown in fig. 4-5, the caster is in a locked state), the end of the first pull rod 12 may abut against the rear bracket 13, so as to limit the pedal 11.

Optionally, a side of the foot pedal 11 facing the rear bracket 13 is provided with a horizontal stop 111, the horizontal stop 111 being adapted to abut the rear bracket 13.

In this embodiment, referring to fig. 2, the horizontal limiting member 111 has a trapezoid structure, the horizontal limiting member 111 may be welded to the lower surface of the foot board 11, and when the caster is in a walking state (fig. 3-4), the foot board 11 is in the walking state

Optionally, the second pull rod 321 is provided with a plurality of positioning holes at intervals along the length direction thereof, and the fixing rod 322 is used for connecting to the positioning holes.

In this embodiment, the positioning holes may be threaded holes, and the fixing rod 322 may be screwed to the positioning holes of different heights of the second pull rod 321, so as to adjust the pre-tightening force of the spring 31.

Alternatively, the first tie rod 12 may be arcuate in cross-section.

In the present embodiment, as shown in fig. 2, by designing the first tie rod 12 to have a curved structure, the force applied to the center shaft 211 can be always directed tangentially to the arc of the first tie rod 12.

Optionally, the end of the transmission shaft 22 for connecting with the caster 200 is in a hexagonal structure for mating connection with the hexagonal hole of the caster 200.

In this embodiment, the hexagonal structure on the drive shaft 22 acts like a hexagonal wrench, and when the drive shaft 22 is rotated to a certain angle, the eccentric structure in the hexagonal hole on the caster 200 locks the caster 200 against movement.

In addition, a doctor console according to another embodiment of the present utility model includes a foot-operated parking brake device as previously described.

Since technical improvements and technical effects achieved by the doctor console are the same as those achieved by the foot-operated parking brake device, detailed description of the technical effects of the doctor console will not be made.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" and "a second" may explicitly or implicitly include at least one such feature.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. A foot-operated parking brake apparatus for a doctor console comprising a base plate (100) and casters (200) disposed on the base plate (100), characterized in that the foot-operated parking brake apparatus comprises:

a pedal mechanism (1) comprising a foot pedal (11) and a first pull rod (12), wherein the foot pedal (11) is used for being hinged to the bottom plate (100), and one end part of the first pull rod (12) is hinged to the foot pedal (11);

the middle transmission mechanism (2) comprises a middle transmission piece (21), a transmission shaft (22) and a first bracket (23), wherein the first bracket (23) is used for being installed on the bottom plate (100), one end of the transmission shaft (22) is rotatably connected with the first bracket (23), the other end of the transmission shaft is used for being matched and connected with a hexagonal hole of the castor (200), the middle transmission piece (21) is connected with the first pull rod (12), the middle transmission piece (21) is in transmission connection with the transmission shaft (22), and the pedal mechanism (1) is used for converting the motion of the pedal mechanism (1) into a walking or locking state of the castor (200) through the middle transmission mechanism (2);

the self-locking mechanism (3) comprises a spring (31) and a self-locking pull rod (32), one end of the spring (31) is connected with the middle transmission piece (21), the other end of the spring is connected with the self-locking pull rod (32), the self-locking pull rod (32) is rotationally connected with the transmission shaft (22), and the self-locking pull rod (32) is used for deflecting a calibration angle on the transmission shaft (22) and is clamped to the first bracket (23).

2. The foot-operated parking brake device according to claim 1, wherein the self-locking pull rod (32) comprises a second pull rod (321) and a fixing rod (322), the fixing rod (322) is connected to one side of the second pull rod (321) facing the pedal plate (11), the spring (31) is connected to the fixing rod (322), the second pull rod (321) is rotatably connected to the transmission shaft (22), limit lugs (3211) are arranged on two sides of the second pull rod (321) facing the end face of the first support (23), and the second pull rod (321) is used for deflecting a certain angle on the transmission shaft (22) and is clamped to the first support (23) through the limit lugs (3211).

3. The foot-operated parking brake device according to claim 2, wherein the self-locking mechanism (3) further comprises an adjusting screw (33), the limiting bump (3211) is provided with a threaded hole, and the adjusting screw (33) is screwed to the threaded hole and is used for abutting against the first bracket (23).

4. A foot operated parking brake arrangement according to claim 3, characterized in that the intermediate transmission member (21) comprises a centre shaft (211) and a connecting rod (212), the centre shaft (211) being rotatably connected to the first pull rod (12), one end of the connecting rod (212) being rotatably connected to the centre shaft (211) and the other end being connected to the transmission shaft (22).

5. Foot-operated parking brake arrangement according to claim 1, characterized in that the foot-operated mechanism (1) further comprises a rear bracket (13), the rear bracket (13) being intended to be mounted on the floor (100), the foot pedal (11) being hinged to the rear bracket (13).

6. Foot operated parking brake arrangement according to claim 5, characterized in that the foot pedal (11) is provided with a horizontal stop (111) on the side facing the rear bracket (13), which horizontal stop (111) is intended to abut against the rear bracket (13).

7. A foot operated parking brake arrangement according to claim 2, characterized in that the second tie rod (321) is provided with a plurality of positioning holes spaced apart along its length, the fixing rod (322) being adapted to be connected to the positioning holes.

8. Foot-operated parking brake arrangement according to claim 1, characterized in that the first tie rod (12) has an arc-shaped cross section.

9. Foot operated parking brake arrangement according to claim 1, characterized in that the end of the drive shaft (22) for connection with the castor wheel (200) is of hexagonal configuration for mating connection with the hexagonal hole of the castor wheel (200).

10. A doctor console comprising a foot operated parking brake arrangement as claimed in any one of claims 1 to 9.