Brake system and surgical cart

Abstract

The invention belongs to the technical field of medical instruments, and discloses a brake system and a surgical cart. The brake system comprises a brake assembly and a connecting piece. The brake assembly is located between the two driving shafts, each driving shaft is provided with a pedal assembly, each pedal assembly has a locking state and an unlocking state, and the brake assembly has a first state and a second state; the connecting piece is arranged on the brake assembly and connected with the two pedal assemblies, and when the pedal assemblies are switched between the locking state and the unlocking state, the connecting piece is driven to trigger the brake assembly so that the brake assembly can be switched between the first state and the second state. When the brake system is used, the two pedal assemblies can enter the locking state at the same time only by stepping on any pedal assembly, unlocking can be completed only by stepping on any pedal assembly during unlocking, locking and unlocking operation is convenient, and the operation convenience of the brake system is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a brake system and an operating table trolley. Background Art

[0002] The operating trolley is one of the commonly used mechanical equipment in surgery. It can carry, transport and store instruments and medicines needed during the operation, which can effectively improve the efficiency and safety of the operation.

[0003] In the prior art, the operating trolley is mainly composed of a metal frame with casters at the bottom. In order for the operating trolley to be stably parked, a brake device is also provided on the operating trolley to ensure that the operating trolley can be stably parked at a designated position.

[0004] At present, only one brake device can be provided to lock the caster on one side. When unlocking, medical staff can only perform corresponding operations on that side. When brake devices are provided on both sides, medical staff are required to operate on both sides. Therefore, the unlocking or locking operation of the brake device is less convenient. Summary of the invention

[0005] The purpose of the present invention is to provide a brake system and an operating trolley, which solves the problem in the prior art that when the brake device is used on the operating trolley, its operation needs to be operated on a designated side or on both sides respectively, resulting in poor convenience in unlocking or locking operations.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present application provides a braking system, which comprises:

[0008] A brake assembly is located between two drive shafts for driving the casters to rotate, each drive shaft is provided with a pedal assembly, the pedal assembly has a locking state for locking the casters of the drive shafts and an unlocking state for unlocking the casters of the drive shafts, the brake assembly has a first state for locking the pedal assembly and a second state corresponding to the unlocking state;

[0009] A connecting member is arranged on the brake assembly and is respectively connected to the two pedal assemblies. When the pedal assembly switches between the locked state and the unlocked state, the connecting member is simultaneously driven to trigger the brake assembly so that the brake assembly switches between the first state and the second state.

[0010] Optionally, the brake assembly comprises:

[0011] Brake rack;

[0012] A fixing part, rotatably connected to the brake frame;

[0013] A first sleeve ring is arranged on the connecting member, the first sleeve ring has a plurality of slide grooves, when the unlocked state is switched to the locked state, the fixing part slides out of the slide grooves and abuts against the end surface of the first sleeve ring, and when the locked state is switched to the unlocked state, the fixing part slides into the slide grooves;

[0014] a second collar, arranged on the connecting member, the second collar being arranged opposite to the first collar and forming an accommodating space for accommodating the fixing portion, the end surface of the second collar having a guiding inclined surface capable of abutting against the fixing portion to push the fixing portion to rotate relative to the first collar;

[0015] The elastic limiting member provides a force for causing the fixing portion to be engaged.

[0016] Optionally, a positioning notch for inserting the fixing portion is provided on the end surface of the first ring between two adjacent slide grooves, and a plurality of guide protrusions are provided at intervals on the end surface of the second ring, and one side of the guide protrusion is inclined toward the first ring as the guide inclined surface, each of the guide protrusions corresponds to the positioning notch or the slide groove, and the side surface of the positioning notch is inclined to form a limiting inclined surface corresponding to the guide protrusion.

[0017] Optionally, the brake assembly further includes:

[0018] Brake rack;

[0019] A fixing portion, arranged on the connecting member;

[0020] A first sleeve ring is rotatably connected to the brake frame, the first sleeve ring has a plurality of slide grooves, when the unlocked state is switched to the locked state, the fixing portion slides out of the slide grooves and abuts against the end surface of the first sleeve ring, when the locked state is switched to the unlocked state, the fixing portion slides into the slide grooves, and the end surface of the first sleeve ring has a first ratchet;

[0021] a second collar, arranged on the connecting member, the second collar and the first collar being coaxially arranged to form a sliding space that can approach or move away from each other, and a second ratchet that can mesh with the first ratchet and push the first collar to rotate relative to the fixing portion is arranged on the end surface of the second collar;

[0022] The elastic limiting member provides a force for causing the fixing portion to be engaged.

[0023] Optionally, the end surface of the first ring has a positioning notch for the fixing portion to be inserted into, and the side wall of the positioning notch has a limiting inclined surface that can abut against the fixing portion.

[0024] Optionally, the brake assembly further includes:

[0025] A rotating shaft is rotatably connected to the brake frame, and the rotating shaft can make the fixing part and the first ring rotate relative to each other.

[0026] Optionally, an insertion slope facing the outside of the slide groove is provided at the opening of the slide groove.

[0027] Optionally, the braking system further comprises:

[0028] The shock absorbing member can be pressed against the connecting member to reduce the moving speed of the connecting member.

[0029] Optionally, the braking system further comprises:

[0030] A limit plate, slidably connected to the pedal assembly;

[0031] A detector, disposed on the limit plate and used to detect a moving position of the pedal assembly relative to the limit plate;

[0032] And / or, the brake system further comprises:

[0033] The shock absorbing member can be pressed against the connecting member to reduce the moving speed of the connecting member.

[0034] Optionally, the pedal assembly comprises:

[0035] A connecting portion, fixedly connected to the connecting member;

[0036] A roller, slidably connected to the connecting portion;

[0037] A rocker, one end of which is connected to the drive shaft to drive the drive shaft to rotate relative to the caster, and the other end of which is connected to the roller;

[0038] A pedal is arranged on the connecting portion and has a treading surface, so as to push the connecting portion to drive the rocker to switch between the locking state and the unlocking state.

[0039] In a second aspect, the present application also provides an operating trolley, which comprises:

[0040] A frame, wherein the frame has two drive shafts arranged opposite to each other, and a caster is respectively arranged at both ends of the drive shaft;

[0041] The brake system as described in any one of the first aspects is arranged on the frame.

[0042] Beneficial effects of the present invention:

[0043] In the first aspect, by setting a connecting piece, both pedal assemblies are connected to the brake assembly, and when any pedal assembly is stepped on to switch between the braking state and the unlocking state, the pedal assembly can drive the connecting piece to act synchronously, and the connecting piece can pull the other pedal assembly and the brake assembly to act, so that the other brake assembly can also switch between the braking state and the unlocking state, and the brake assembly can switch between the first state and the second state. When the two pedal assemblies are switched to the locked state, they can drive the drive shaft to rotate and lock the caster on the drive shaft, and at the same time, the brake state enters the first state to lock the position of the pedal assembly, and when both pedal assemblies are switched to the unlocking state, the brake assembly switches to the second state. In this way, when the brake system is used, only one pedal assembly needs to be stepped on to realize that the two pedal assemblies enter the locked state at the same time, so that the two drive shafts can be locked at the same time, thereby effectively improving the stability of the brake system in the braking state, and when unlocking, only one pedal assembly needs to be stepped on to complete the unlocking, so that the locking and unlocking operations are more convenient, which effectively improves the convenience of operation of the brake system.

[0044] Secondly, the brake system can lock and unlock the two drive shafts at the same time by stepping on either side of the frame, so that medical staff can operate the operating trolley more conveniently, effectively improving the convenience of locking and unlocking the operating trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a front view of the brake system and the drive shaft in the first embodiment of the present invention;

[0046] Figure 2 is a schematic structural diagram of a brake system and a drive shaft from a first perspective in Embodiment 1 of the present invention;

[0047] Figure 3 is a structural cross-sectional view of a brake system and a drive shaft in Embodiment 1 of the present invention;

[0048] Figure 4 This is a schematic diagram of the structure of the rotating shaft, the first ring and the second ring of the brake system in the first embodiment of the present invention.

[0049] Figure 5 It is a schematic diagram of the exploded structure of the rotating shaft, the first ring and the second ring of the brake system in the first embodiment of the present invention;

[0050] Figure 6 It is a structural schematic diagram of the brake assembly of the brake system in the first embodiment of the present invention in the second state.

[0051] Figure 7 It is a structural schematic diagram of the process in which the brake assembly of the brake system in the first embodiment of the present invention switches from the second state to the first state.

[0052] Figure 8 It is a structural schematic diagram of a brake assembly of a brake system in a first state in Embodiment 1 of the present invention.

[0053] Fig. 9 It is a schematic structural diagram of the drive shaft and crank handle of the brake system in the first embodiment of the present invention.

[0054] Fig.10 It is a side view of the driving shaft and crank handle of the brake system in the first embodiment of the present invention.

[0055] Fig.11 It is a structural schematic diagram of the brake assembly of the brake system in the second embodiment of the present invention in the second state.

[0056] Fig.12 It is a structural schematic diagram of the process in which the brake assembly of the brake system in the second embodiment of the present invention switches from the second state to the first state.

[0057] Fig.13 It is a structural schematic diagram of a brake assembly of a brake system in a second embodiment of the present invention in a first state.

[0058] In the figure:

[0059] 1. brake assembly; 11. brake frame; 12. rotating shaft; 13. fixing part; 14. first sleeve ring; 141. slide groove; 142. positioning notch; 143. plug-in inclined surface; 144. first ratchet; 15. second sleeve ring; 151. guide protrusion; 152. second ratchet; 16. elastic limiter;

[0060] 2. Connectors;

[0061] 3. Drive shaft; 31. Caster;

[0062] 4. Pedal assembly; 41. Connecting part; 42. Roller; 43. Rocker; 44. Pedal;

[0063] 5. Shock absorbers;

[0064] 6. Limiting plate;

[0065] 7. Detector. DETAILED DESCRIPTION

[0066] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0067] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0069] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0070] The embodiments of the present application disclose a brake system and a surgical trolley.

[0071] Embodiment 1:

[0072] Reference Figure 1 and Figure 2 The brake system includes a brake assembly 1 and a connector 2. The brake assembly 1 is located between two drive shafts 3 for driving casters 31 to rotate. Each drive shaft 3 is provided with a pedal assembly 4. The pedal assembly 4 has a locked state for locking the casters 31 of the drive shaft 3 and an unlocked state for unlocking the casters 31 of the drive shaft 3. The brake assembly 1 has a first state for locking the pedal assembly 4 and a second state corresponding to the unlocked state. The connector 2 is provided on the brake assembly 1 and is respectively connected to the two pedal assemblies 4. When the pedal assembly 4 switches between the locked state and the unlocked state, the connector 2 is simultaneously driven to trigger the brake assembly 1 so that the brake assembly 1 switches between the first state and the second state.

[0073] Specifically, the drive shaft 3 is distributed on opposite sides of the operating trolley, and a pedal assembly 4 is provided in the middle of the axial direction of the drive shaft 3. The pedal assembly 4 is for medical staff to step on and operate. The two pedal assemblies 4 are connected together by a connector 2. When one of the pedal assemblies 4 is stepped on, the other pedal assembly 4 can move synchronously. The pedal assembly 4 can drive the drive shaft 3 to rotate relative to the caster 31 in the locked state to lock the rotation of the caster 31. In the unlocked state, the drive shaft 3 is at the rotation center of the caster 31, and the caster 31 can rotate to drive the operating trolley to move. In other embodiments, the pedal assembly 4 can also be used to directly lock the caster 31, instead of locking it by rotating the drive shaft 3. The specific structure can be designed with reference to the structure for locking the caster 31 in the prior art, and the structure can be linked with the pedal assembly 4. This application will not elaborate on this.

[0074] The connecting member 2 is arranged on the brake assembly 1, which can be in the shape of an inverted shell. The connecting member 2 is fixedly connected to the two pedal assemblies 4 to drive the brake assembly 1 and the pedal assembly 4 to move synchronously. The brake assembly 1 can keep the connecting member 2 fixed in the first state, thereby locking the positions of the two pedal assemblies 4 at the same time, ensuring that the pedal assembly 4 remains in the locked state and will not reset. When the pedal assembly 4 is stepped on to switch from the locked state to the unlocked state, the connecting member 2 can trigger the brake assembly 1 to enter the second state, and the pedal assembly 4 also enters the unlocked state synchronously.

[0075] By setting a connecting piece 2, both pedal assemblies 4 are connected to the brake assembly 1. Then, when any pedal assembly 4 is stepped on to switch between the braking state and the unlocking state, the pedal assembly 4 can drive the connecting piece 2 to move synchronously, and the connecting piece 2 can pull the other pedal assembly 4 and the brake assembly 1 to move, so that the other brake assembly 1 can also switch between the braking state and the unlocking state, and the brake assembly 1 can switch between the first state and the second state. When the two pedal assemblies 4 are switched to the locked state, they can drive the drive shaft 3 to rotate and lock the caster 31 on the drive shaft 3. At the same time, the brake assembly 1 enters the first state and locks the position of the pedal assembly 4. When both pedal assemblies 4 are switched to the unlocking state, the brake assembly 1 switches to the second state. In this way, when the brake system is in use, it is only necessary to step on any pedal assembly 4 to realize that the two pedal assemblies 4 enter the locked state at the same time, thereby being able to drive the two drive shafts 3 to rotate at the same time and synchronously lock the multiple casters 31, thereby effectively improving the stability of the brake system in the braking state, and when unlocking, it is only necessary to step on any pedal assembly 4 to complete the unlocking, making the locking and unlocking operations more convenient, effectively improving the operational convenience of the brake system.

[0076] Reference Figures 3 to 5Optionally, the brake assembly 1 includes a brake frame 11, a fixing portion 13, a first sleeve ring 14, a second sleeve ring 15 and an elastic stopper 16. The fixing portion 13 is rotatably connected to the brake frame 11; the first sleeve ring 14 is arranged on the connecting member 2, and the first sleeve ring 14 has a plurality of slide grooves 141. When the unlocked state is switched to the locked state, the fixing portion 13 slides out of the slide grooves 141 and abuts against the end surface of the first sleeve ring 14. When the locked state is switched to the unlocked state, the fixing portion 13 slides into the slide grooves 141; the second sleeve ring 15 is arranged on the connecting member 2, and the second sleeve ring 15 is arranged opposite to the first sleeve ring 14 and forms an accommodating space for accommodating the fixing portion 13. The end surface of the second sleeve ring 15 has a guiding inclined surface that can abut against the fixing portion 13 to push the fixing portion 13 to rotate relative to the first sleeve ring 14; the elastic stopper 16 provides a force to make the fixing portion 13 engage.

[0077] Specifically, the brake frame 11 is fixed on the frame of the operating table and is located between the two drive shafts 3. The brake frame 11 can be in the shape of a plate or a frame structure. A rotating shaft 12 is rotatably connected to the middle part of the brake frame 11 through a bearing. The rotating shaft 12 extends in the vertical direction. A fixing portion 13 is fixedly arranged on the side wall of the rotating shaft 12. The fixing method can be welding, bonding, plug-in, clamping or integrated molding. This application does not limit this. The fixing portion 13 can be cylindrical and extend radially along the rotating shaft 12.

[0078] The first collar 14 and the second collar 15 are both sleeved on the outside of the rotating shaft 12, and both are connected to the connecting member 2, and the connection method can be bolt connection, clamping, bonding or welding. The connecting member 2 can drive the two to rise or fall synchronously. The first collar 14 extends along the axial direction of the rotating shaft 12, and a slide groove 141 is formed on its side wall. The fixing part 13 is inserted into the slide groove 141, and the end of the slide groove 141 close to the second collar 15 is open to ensure that the fixing part 13 can slide out of the slide groove 141.

[0079] The second ring 15 maintains a certain distance from the first ring 14, and the distance is greater than the diameter of the fixing portion 13, so that an accommodating space that can accommodate the fixing portion 13 is formed between the opposite end faces of the two. A guiding slope is set on the end face of the second ring 15, and the guiding slope can correspond to the slide groove 141 and the end face of the first ring 14 at the same time, so that when the second ring 15 slides down, the guiding slope can abut against the fixing portion 13 that slides out of the slide groove 141, so that the guiding slope is used to generate an extrusion force on the fixing portion 13 to promote the rotation of the rotating shaft 12. When the fixing portion 13 corresponds to the end face of the first ring 14, the second ring 15 can stop sliding down, and use the elastic limit member 16 to drive the first ring 14 to reset, so that the fixing portion 13 can be clamped on the end face of the first ring 14, and the brake assembly 1 can be in the first state at this time.

[0080] A plurality of slide grooves 141 are arranged at intervals around the circumference of the first collar 14. When the brake assembly 1 switches from the first state to the second state, the guide slope can push the fixed portion 13 to rotate, so that the fixed portion 13 corresponds to the slide groove 141 adjacent to the original slide groove 141. At this time, the elastic limiter 16 can be used to drive the first collar 14 to reset, and the fixed portion 13 can be inserted into the adjacent slide groove 141, and the brake assembly 1 will be in the second state. When the elastic limiter 16 is in the locked state, its elastic force can make the fixed portion 13 clamped on the end face of the first collar 14, and when it is in the unlocked state, its elastic force can clamp the fixed portion 13 into the slide groove 141.

[0081] When the pedal assembly 4 drives the connecting member 2 to move, the connecting member 2 can simultaneously drive the first ring 14 and the second ring 15 to slide, and the fixing portion 13 can slide in the sliding groove 141. When the fixing portion 13 slides out of the sliding groove 141 and abuts against the guiding inclined surface, as the second ring 15 moves downward, the guiding inclined surface can squeeze the fixing portion 13 to drive the rotating shaft 12 to rotate relative to the brake frame 11, so that the fixing portion 13 is staggered with the original sliding groove 141, and at the same time, the elastic limiting member 16 produces corresponding deformation. At this time, the pedal assembly 4 is released, and the connecting member 2 can be reset under the action of the elastic limiting member 16, so that the first ring 14 rises, and the fixing portion 13 abuts on the end surface of the first ring 14 to form a snap connection, and the brake assembly 1 can be switched from the second state to the first state. At this time, due to the abutment between the fixing portion 13 and the first ring 14, and at the same time, the restriction of the elastic limiting member 16 can be cooperated with, the position of the connecting member 2 can be locked, thereby keeping the two pedal assemblies 4 in the locked state. When the pedal assembly 4 is switched to the unlocked state, the pedal assembly 4 can be continuously stepped on so that the connecting member 2 drives the second ring 15 to continue to move downward, and the fixing portion 13 is continuously pushed to rotate by the guiding inclined surface so that the fixing portion 13 corresponds to the adjacent slide groove 141. Then, the pedal assembly 4 is released and the fixing portion 13 can be reinserted into the slide groove 141 to form a snap connection. Then, the brake assembly 1 will be switched to the second state. At this time, the fixing portion 13 can slide relative to the first ring 14. Under the action of the elastic limit member 16, the connecting member 2 can be reset, and the pedal assembly 4 can be smoothly switched to the unlocked state.

[0082] Optionally, the elastic limiter 16 can be a spring or an elastic rod, etc., which can be connected to the connecting member 2 to limit the movement of the connecting member 2, or connected to the first ring 14 or the second ring 15 to limit its sliding relative to the rotating shaft 12, or arranged in the pedal assembly 4 to limit the movement of the pedal assembly 4. In this embodiment, the elastic limiter 16 is a spring, which is arranged in the vertical direction, the lower end of the elastic limiter 16 is fixedly connected to the brake frame 11, and the upper end is fixedly connected to the connecting member 2, and a plurality of elastic limiters 16 are arranged around the circumference of the connecting member 2. In the second state of the brake assembly 1, the elastic limiter 16 is only subjected to the gravity of the connecting member 2, and in the first state, the elastic limiter 16 is in a compressed state due to the proximity of the connecting member 2 to the brake frame 11.

[0083] Reference Figures 6 to 8 Optionally, a positioning notch 142 for inserting the fixing portion 13 is provided on the end surface of the first collar 14 and between two adjacent slide grooves 141, and a plurality of guide protrusions 151 are provided at intervals on the end surface of the second collar 15, and one side of the guide protrusion 151 is inclined toward the first collar 14 as a guide slope, and each guide protrusion 151 corresponds to the positioning notch 142 or the slide groove 141, and the side surface of the positioning notch 142 is inclined to form a limiting slope corresponding to the guide protrusion 151.

[0084] Specifically, a plurality of notches are provided at intervals on a side of the second collar 15 close to the first collar 14, and a guide protrusion 151 is formed between two adjacent notches. The side of the guide protrusion 151 close to the first collar 14 is pointed to prevent the guide protrusion 151 from being engaged with the fixing portion 13. One side of the guide protrusion 151 serves as a guide slope, and the other side forms an inverted "V" shape with the guide slope of the adjacent guide protrusion 151. Among the two adjacent guide protrusions 151, the tip of one guide protrusion 151 corresponds to the slide groove 141, and the side of the guide slope away from the tip corresponds to the limiting slope portion at the opening of the positioning notch 142, while the tip of the other guide protrusion 151 corresponds to the limiting slope deep in the positioning notch 142, and the side of the guide slope of the guide protrusion 151 away from the tip corresponds to the adjacent slide groove 141.

[0085] By setting a plurality of guide protrusions 151 to form a guide inclined surface, and cooperating with the positioning notch 142, when the fixing portion 13 abuts against the wire inclined surface, as the second ring 15 continues to move downward, the fixing portion 13 can rotate along the guide inclined surface toward the adjacent guide protrusion 151. When the fixing portion 13 abuts against the adjacent guide protrusion 151, the fixing portion 13 now corresponds to the limiting inclined surface of the positioning notch 142, and at the same time limits the further downward movement of the second ring 15, indicating that the pedal assembly 4 has been stepped into place. At this time, the pedal assembly 4 is released, the elastic limiting member 16 pushes the connecting member 2 to rise, and the connecting member 2 drives the second ring 15 and the first ring 14 to rise. When the fixing portion 13 abuts against the limiting inclined surface, the fixing portion 13 can continue to rotate under the action of the limiting inclined surface, and when the fixing portion 13 is inserted into the bottom of the positioning notch 142, it can form a card connection with the positioning notch 142, thereby making the brake assembly 1 enter the first state, and at the same time, the fixing portion 13 will correspond to the guiding inclined surface of the adjacent guide protrusion 151. When switching to the second state, the pedal assembly 4 is stepped on again to make the connecting member 2 drive the second ring 15 to move downward. At this time, the fixing portion 13 can be rotated along the adjacent guide inclined surface to the next guide protrusion 151, so that the fixing portion 13 and the adjacent slide groove 141 are corresponding. Then, when the connecting member 2 is reset under the action of the elastic limit member 16, the fixing portion 13 can be inserted into the adjacent slide groove 141, so that the brake assembly 1 can be smoothly switched to the second state.

[0086] Optionally, an insertion slope 143 facing the outside of the slide groove 141 is provided at the opening of the slide groove 141 .

[0087] Specifically, an insertion inclined surface 143 is provided at one side of the opening of the slide groove 141 , so that the opening area of ​​the slide groove 141 is larger, so that the fixing portion 13 can be smoothly inserted into the slide groove 141 .

[0088] Reference Figure 3 Optionally, the brake system further comprises a shock absorbing member 5. The shock absorbing member 5 can be pressed against the connecting member 2 to reduce the moving speed of the connecting member 2.

[0089] Specifically, the shock absorber 5 can be made of a material with a high rebound noise reduction effect such as elastic rubber. In the present embodiment, a plurality of shock absorbers 5 are provided, and a shock absorber 5 is provided on the top wall of the connecting member 2. When the pedal assembly 4 is switched to the locked state, the pedal assembly 4 is stepped on first. When the external force is removed, the fixing portion 13 is located between the first sleeve 14 and the second sleeve 15. Under the action of the elastic limiter 16, the first sleeve 14 will collide with the fixing portion 13. By providing the shock absorber 5 on the connecting member 2, when the first sleeve 14 is close to the fixing portion 13, the connecting member 2 will first be squeezed with the shock absorber 5, thereby quickly reducing the moving speed of the first sleeve 14 to ensure that the noise generated when the first sleeve 14 contacts the fixing portion 13 is small enough, thereby effectively reducing the noise intensity and also reducing the risk of damage to the fixing portion 13. Similarly, a shock absorber 5 can also be provided at the lower end of the first ring 14 and the outer wall of the rotating shaft 12. During the sliding down process of the first ring 14 and the second ring 15, before the second ring 15 collides with the fixing part 13, the shock absorber 5 can first be squeezed with the first ring 14. Since the second ring 15 and the first ring 14 are both fixed on the connecting member 2, the two move synchronously. The squeezing of the first ring 14 and the shock absorber 5 can reduce the moving speed of the second ring 15, thereby effectively alleviating the collision strength between the second ring 15 and the fixing part 13.

[0090] Optionally, the brake system further comprises a limit plate 6 and a detector 7. The limit plate 6 is slidably connected to the pedal assembly 4; the detector 7 is arranged on the limit plate 6 and is used to detect the moving position of the pedal assembly 4 relative to the limit plate 6.

[0091] Specifically, a limit plate 6 is fixedly mounted on the brake frame 11, the limit plate 6 is arranged in the vertical direction, part of the pedal assembly 4 is slidably connected with the limit plate 6, and a detector 7, such as an infrared sensor, is arranged on the limit plate 6. The position of the detector 7 can be exactly at the position of the pedal assembly 4 when it is in the locked state, so as to judge in real time whether the pedal assembly 4 is fixed in the position when it is in the locked state.

[0092] Reference Figure 3 , Fig. 9 as well as Fig.10 Optionally, the pedal assembly 4 includes a connecting portion 41, a roller 42, a rocker 43 and a pedal 44. The connecting portion 41 is fixedly connected to the connecting member 2; the roller 42 is slidably connected to the connecting portion 41; one end of the rocker 43 is connected to the driving shaft 3 to drive the driving shaft 3 to rotate relative to the caster 31, and the other end is connected to the roller 42; the pedal 44 is arranged on the connecting portion 41 and has a tread surface to push the connecting portion 41 to drive the rocker 43 to switch between the locked state and the unlocked state.

[0093] Specifically, the rocker 43 is sleeved on the drive shaft 3, and the two are fixedly connected, and the fixing method can be bolt connection, welding, bonding, etc. The rocker 43 can drive the drive shaft 3 to rotate. Taking the unlocked state as a reference, when the rocker 43 drives the drive shaft 3 to rotate a certain angle, the drive shaft 3 can lock the rotation of the caster 31. In this embodiment, the angle is 30°. The connecting part 41 is fixedly connected to the side of the connecting member 2, and the fixing method can be welding, bonding, bolt connection or clamping, etc. The side of the connecting part 41 close to the rocker 43 has a U-shaped slideway, and a roller 42 is arranged in the slide, and the end of the rocker 43 away from the drive shaft 3 is rotatably connected to the roller 42. The pedal 44 is in the shape of a "7", and its cross arm is fixed on the top wall of the connecting part 41. The fixing method can be a non-detachable method such as welding or bonding, or a detachable method such as bolt connection or clamping. The vertical arm of the pedal 44 extends to the outside of the driving shaft 3 and can form a sliding fit with the operating table to guide the lifting and lowering of the pedal 44 in the vertical direction.

[0094] When switching to the locked state of the pedal assembly 4, the pedal 44 can be moved downward by stepping on the pedal 44, and the pedal 44 will drive the connecting part 41 to move downward, and the connecting part 41 will pull the connecting member 2 to move downward synchronously. In the process of the connecting part 41 moving downward, the roller 42 will slide in the slide and drive one end of the rocker 43 to move downward, so that the rocker 43 can rotate downward, and the rocker 43 will synchronously drive the drive shaft 3 to rotate relative to the caster 31, and the pedal assembly 4 can be switched from the unlocked state to the locked state. When switching from the locked state to the unlocked state, the elastic limit member 16 in the brake assembly 1 can be used to drive the connecting member 2 to automatically reset, thereby driving the connecting part 41, the rocker 43, the pedal 44 and the drive shaft 3 to automatically reset.

[0095] Embodiment 2:

[0096] The difference between this embodiment and the first embodiment lies in the different action principles of the brake assembly 1 .

[0097] Reference Figures 11 to 13Optionally, the brake assembly 1 further includes a brake frame 11, a fixing portion 13, a first sleeve 14, a second sleeve 15 and an elastic stopper 16. The fixing portion 13 is arranged on the connecting member 2; the first sleeve 14 is rotatably connected to the brake frame 11, and the first sleeve 14 has a plurality of slide grooves 141. When the unlocked state is switched to the locked state, the fixing portion 13 slides out of the slide grooves 141 and abuts against the end surface of the first sleeve 14. When the locked state is switched to the unlocked state, the fixing portion 13 slides into the slide grooves 141. The end surface of the first sleeve 14 has a first ratchet 144; the second sleeve 15 is arranged on the first sleeve 14, and the second sleeve 15 is coaxially arranged with the first sleeve 14 and forms a sliding space that can approach or move away from each other. The second sleeve 15 is provided with a second ratchet 152 on the opposite end surface to the first ratchet 144, which can mesh with the first ratchet 144 and push the first sleeve 14 to rotate relative to the fixing portion 13. The elastic limiting member 16 provides a force to cause the fixing portion 13 to engage.

[0098] Specifically, the forms of the brake frame 11, the first sleeve ring 14, the second sleeve ring 15 and the elastic stopper 16 are the same as those in the first embodiment, and are not described in detail here. In this embodiment, the rotating shaft 12 is rotatably connected to the middle part of the brake frame 11 through a bearing, and the first sleeve ring 14 is sleeved on the rotating shaft 12 and fixedly connected thereto, and the fixing method can be threaded connection, clamping, bonding or welding. A slide groove 141 is provided through the side wall of the first sleeve ring 14, and the slide groove 141 extends in the vertical direction and is open at the lower end of the first sleeve ring 14, so that the fixing part 13 can slide out from the lower end of the slide groove 141, and the fixing part 13 is directly fixed on the connecting member 2 to be synchronously lowered or raised with the connecting member 2.

[0099] A plurality of first ratchet teeth 144 are spaced apart on the upper end surface of the first ring 14, and a plurality of second ratchet teeth 152 are relatively disposed on the lower end surface of the second ring 15. The first ratchet teeth 144 and the second ratchet teeth 152 are staggered, that is, the tip of the second ratchet teeth 152 corresponds to between two adjacent first ratchet teeth 144, so that the two can form an engagement, and can drive the first ring 14 to rotate when engaged.

[0100] When the connecting member 2 drives the fixing portion 13 and the second ring 15 to move downward, the fixing portion 13 slides in the slide groove 141. When the fixing portion 13 extends out of the slide groove 141 from the lower end of the slide groove 141, the second ratchet tooth 152 maintains a certain distance with the first ratchet tooth 144, and the second ring 15 continues to slide down. When the second ratchet tooth 152 engages with the first ratchet tooth 144, it pushes the first ring 14 and the rotating shaft 12 to rotate, so that the fixing portion 13 abuts against the lower end surface of the first ring 14. At this time, the external force is removed, and the elastic limit member 16 automatically resets the connecting member 2, so that the fixing portion 13 and the second ring 15 rise, and the fixing portion 13 will abut against the end surface of the first ring 14, and the brake assembly 1 enters the first state. When the brake assembly 1 needs to be switched to the second state, the connecting member 2 continues to drive the second ring 15 to move downward, and the second ratchet 152 continues to abut against the first ratchet 144 to drive the first ring 14 to rotate. When the adjacent slide groove 141 corresponds to the fixing part 13, the external force is removed, and the fixing part 13 is automatically reset under the action of the elastic limit member 16, so that the brake assembly 1 is switched to the second state.

[0101] Optionally, the end surface of the first collar 14 has a positioning notch 142 for the fixing portion 13 to be inserted into, and the side wall of the positioning notch 142 has a limiting inclined surface that can abut against the fixing portion 13 .

[0102] Specifically, a positioning notch 142 is provided on the lower end surface of the first ring 14, and the positioning notch 142 is located between two adjacent slide grooves 141. A limiting inclined surface is provided on the side surface of the positioning notch 142, so that when the fixing portion 13 abuts against the limiting inclined surface, the fixing portion 13 will generate an extrusion force toward the limiting inclined surface, thereby pushing the first ring 14 to rotate.

[0103] In the second state, when the fixing part 13 extends out of the slide slot 141 and the tip of the second ratchet 152 corresponds to the tip of the first ratchet 144, when the two are fitted, the side of the second ratchet 152 can squeeze the side of the first ratchet 144, thereby driving the first ring 14 to rotate a certain angle, the slide slot 141 is staggered with the fixing part 13, and the end face of the first ring 14 corresponds to the fixing part 13. At this time, the fixing part 13 rises and presses against the limiting inclined surface until the fixing part 13 is inserted into the positioning notch 142, and the second ring 15 will separate from the first ring 14. At this time, the brake assembly 1 switches to the first state, and the first ring 14 will rotate a certain angle again, so that the tip of the second ratchet 152 corresponds to the tip of the adjacent first ratchet 144 again. When the first state is switched to the second state again, the second ratchet 152 can push the first ratchet 144 to rotate a certain angle again, so that the adjacent slide slot 141 can correspond to the fixing part 13.

[0104] Optionally, an insertion slope 143 facing the outside of the slide groove 141 is provided at the opening of the slide groove 141 .

[0105] Specifically, an insertion slope 143 is provided at one side of the opening of the slide groove 141, so that the opening area of ​​the slide groove 141 is larger, so that the fixing part 13 can be smoothly inserted into the slide groove 141. At the same time, the insertion slope 143 can form an abutment with the fixing part 13 when the fixing part 13 is inserted, so that the fixing part 13 can also push the first ring 14 to rotate a certain angle during the insertion process, so that the tip of the first ratchet 144 on the first ring 14 corresponds to the tip of the second ratchet 152, so that the first ring 14 can be driven to rotate when the two are engaged later.

[0106] The operating table vehicle comprises a vehicle frame and a brake system as in the above embodiment. The vehicle frame has two drive shafts 3 arranged opposite to each other, and a caster 31 is arranged at each end of the drive shaft 3; and the brake system is arranged on the vehicle frame.

[0107] The brake system can lock and unlock the two drive shafts 3 simultaneously by stepping on either side of the frame, so that medical staff can more conveniently operate the operating trolley, effectively improving the convenience of locking and unlocking the operating trolley.

[0108] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A brake system, characterized in that: include: A brake assembly (1) is located between two drive shafts (3) for driving casters (31) to rotate, each drive shaft (3) is provided with a pedal assembly (4), the pedal assembly (4) having a locked state for locking the casters (31) of the drive shaft (3) and an unlocked state for unlocking the casters (31) of the drive shaft (3), the brake assembly (1) having a first state for locking the pedal assembly (4) and a second state corresponding to the unlocked state; A connecting member (2) is arranged on the brake assembly (1) and is respectively connected to the two pedal assemblies (4); when the pedal assembly (4) switches between the locked state and the unlocked state, the connecting member (2) is simultaneously driven to trigger the brake assembly (1) so that the brake assembly (1) switches between the first state and the second state.

2. The brake system according to claim 1, characterized in that: The brake assembly (1) comprises: Brake frame (11); A fixing portion (13) rotatably connected to the brake frame (11); A first sleeve (14) is arranged on the connecting member (2), the first sleeve (14) having a plurality of slide grooves (141), when the unlocking state is switched to the locking state, the fixing portion (13) slides out of the slide grooves (141) and abuts against the end surface of the first sleeve (14), and when the locking state is switched to the unlocking state, the fixing portion (13) slides into the slide grooves (141); a second collar (15) arranged on the connecting member (2); the second collar (15) and the first collar (14) are arranged opposite to each other and form a receiving space for receiving the fixing portion (13); an end surface of the second collar (15) has a guiding inclined surface capable of abutting against the fixing portion (13) so as to push the fixing portion (13) to rotate relative to the first collar (14); The elastic limiting member (16) provides a force for causing the fixing portion (13) to be engaged.

3. The brake system according to claim 2, characterized in that: A positioning notch (142) for inserting the fixing portion (13) is arranged on the end surface of the first collar (14) between two adjacent slide grooves (141); a plurality of guide protrusions (151) are arranged at intervals on the end surface of the second collar (15); one side of the guide protrusion (151) is inclined toward the first collar (14) to serve as the guide inclined surface; each guide protrusion (151) corresponds to the positioning notch (142) or the slide groove (141); and the side surface of the positioning notch (142) is inclined to form a limiting inclined surface corresponding to the guide protrusion (151).

4. The brake system according to claim 1, characterized in that: The brake assembly (1) comprises: Brake frame (11); A fixing portion (13) arranged on the connecting member (2); A first sleeve ring (14) is rotatably connected to the brake frame (11), the first sleeve ring (14) having a plurality of slide grooves (141), when the unlocked state is switched to the locked state, the fixing portion (13) slides out of the slide grooves (141) and abuts against the end surface of the first sleeve ring (14), when the locked state is switched to the unlocked state, the fixing portion (13) slides into the slide grooves (141), and the end surface of the first sleeve ring (14) has a first ratchet (144); a second collar (15) arranged on the connecting member (2); the second collar (15) and the first collar (14) are coaxially arranged to form a sliding space that allows them to move closer to or farther from each other; a second ratchet tooth (152) is arranged on the end surface of the second collar (15) and is capable of meshing with the first ratchet tooth (144) and pushing the first collar (14) to rotate relative to the fixing portion (13); The elastic limiting member (16) provides a force for causing the fixing portion (13) to be engaged.

5. The brake system according to claim 4, characterized in that: The end surface of the first sleeve ring (14) has a positioning notch (142) for the fixing portion (13) to be inserted into, and the side wall of the positioning notch (142) has a limiting inclined surface capable of abutting against the fixing portion (13).

6. The brake system according to claim 2 or 4, characterized in that: The brake assembly (1) further comprises: A rotating shaft (12) is rotatably connected to the brake frame (11), and the rotating shaft (12) can enable the fixing portion (13) and the first sleeve ring (14) to rotate relative to each other.

7. The brake system according to claim 2 or 4, characterized in that: The opening of the slide groove (141) is provided with an inserting inclined surface (143) facing the outside of the slide groove (141).

8. The brake system according to any one of claims 1 to 5, characterized in that: The brake system also includes: A limit plate (6) slidably connected to the pedal assembly (4); A detector (7), arranged on the limiting plate (6) and used for detecting a moving position of the pedal assembly (4) relative to the limiting plate (6); And / or, the brake system further comprises: The shock absorbing member (5) can be pressed against the connecting member (2) to reduce the moving speed of the connecting member (2).

9. The brake system according to any one of claims 1 to 5, characterized in that: The pedal assembly (4) comprises: A connecting portion (41) fixedly connected to the connecting member (2); A roller (42) slidably connected to the connecting portion (41); A rocker (43), one end of which is connected to the drive shaft (3) to drive the drive shaft (3) to rotate relative to the caster (31), and the other end of which is connected to the roller (42); A pedal (44) is arranged on the connecting portion (41) and has a treading surface, so as to push the connecting portion (41) to drive the rocker (43) to switch between the locked state and the unlocked state.

10. An operating table trolley, characterized in that: include: A frame, the frame having two drive shafts (3) arranged opposite to each other, and a caster (31) is respectively arranged at both ends of the drive shaft (3); The brake system according to any one of claims 1 to 9, arranged on the vehicle frame.

Images