A parking device and a doctor's console

Abstract

The present invention provides a parking device and a doctor's console, which relate to the technical field of mechanical braking. The parking device includes a foot-operated mechanism, which includes a pedal, a bracket, a swing rod and a spring. The bracket is used for being mounted on a bottom plate. The pedal is movably connected to the bracket. One end of the spring is connected to the pedal, and the other end is connected to the bracket. A chute and a convex block are provided on the pedal. One end of the swing rod is hinged to the bracket, and a sliding rod is provided at the other end of the swing rod. The convex block is used for supporting the sliding rod. The driving shaft is rotatably connected to a first bearing seat, and the pedal is connected to the driving shaft through a gear-rack mechanism. The driven shaft is rotatably connected to a second bearing seat, and one end of the driven shaft is used for being connected to a caster. A first tooth structure is provided at the end of the driving shaft close to the driven shaft, and a second tooth structure is provided at the end of the driven shaft close to the driving shaft. Compared with the prior art, an operator can understand the working state of the caster at this time through the foot feeling and the position state of the pedal, so as to avoid misoperation.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical braking, and more specifically, to a parking device and a doctor console. Background Art

[0002] During the use of a mobile cart, it is necessary to control the movement and stopping of the cart body through casters so as to be able to adjust the position of the cart body at any time. For example, a central control caster is provided at the lower part of the bottom plate of a doctor console. The central control caster is equipped with a parking mechanism, and generally a wrench or a pedal is used to repeatedly rotate it for locking and unlocking. Currently, the braking mechanism for controlling the central control caster of the doctor console is controlled by two pedals respectively for unlocking and locking. One pedal is pressed down for unlocking and the other is pressed down for locking. This method is not user-friendly for the operator. The operator still has to choose which pedal to step on, and the control method of the two pedals does not allow the operator to intuitively see the current parking state, which is prone to misoperation. Summary of the Invention

[0003] The problem to be solved by the present invention is: how to provide a parking device to reduce the possibility of misoperation during parking.

[0004] The present invention provides a parking device for a doctor console. The doctor console includes a bottom plate and casters provided on the bottom plate. The parking device includes:

[0005] A foot pedal mechanism, which includes a pedal, a bracket, a swing rod and a spring. The bracket is used for mounting on the bottom plate. The pedal is movably connected to the bracket. One end of the spring is connected to the pedal and the other end is connected to the bracket. A chute and a convex block are provided on the pedal. One end of the swing rod is hinged to the bracket, and a sliding rod is provided at the other end of the swing rod. The sliding rod is used for sliding along the chute, and the convex block is used for supporting the sliding rod. When a downward pressure is applied to the pedal and it moves to the maximum stroke, the sliding rod is used for moving to a position of the chute away from the bottom plate. When the pressure on the pedal is released, the chute is used for guiding the sliding rod to move onto the convex block. When the sliding rod moves from the position of the chute away from the bottom plate to the convex block, the movement stroke of the pedal is a first distance;

[0006] A transmission mechanism, which includes a driving shaft, a driven shaft, a gear-rack mechanism, a first bearing seat and a second bearing seat. The first bearing seat and the second bearing seat are installed on the bottom plate at intervals. The driving shaft is rotatably connected to the first bearing seat, and the pedal is connected to the driving shaft through the gear-rack mechanism. The driven shaft is rotatably connected to the second bearing seat, and one end of the driven shaft is used to connect to the caster. The rotation of the driven shaft is used to change the working state of the caster. A first tooth structure is provided at the end of the driving shaft close to the driven shaft, and a second tooth structure is provided at the end of the driven shaft close to the driving shaft. The first tooth structure is used for clearance fit connection with the second tooth structure, and the tooth gap between the first tooth structure and the second tooth structure is used to compensate the first distance.

[0007] A parking device provided by the present invention has the following beneficial effects compared with the prior art, but is not limited to:

[0008] The parking device described in the present invention can effectively prevent the possibility of misoperation by repeatedly stepping on the pedal to lock and unlock the casters. Specifically, when the operator steps on the pedal, the pedal can move relative to the bracket towards the bottom plate, and the spring is in a compressed energy storage state. When the operator releases the pedal, the pedal automatically returns under the action of the spring. During the movement of the pedal, the gear-rack mechanism can drive the rotation of the driving shaft, and then the first tooth structure on the driving shaft and the second tooth structure on the driven shaft drive the rotation of the driven shaft. The rotation of the driven shaft can drive the caster to switch to different working states (locked or moving). When the caster is in the moving state, the sliding rod arranged on the swing rod is located at the position of the chute close to the bottom plate, and at this time the spring is in an uncompressed state; when it is necessary to switch the caster to the locked state, the operator can apply a downward pressure to the pedal to make it move towards the bottom plate, and make the pedal move to the maximum stroke (that is, if pressure is continuously applied, the pedal will no longer move towards the bottom plate). At this time, the sliding rod moves from the position of the chute close to the bottom plate to the position of the chute away from the bottom plate. During this process, the pedal will drive the rotation of the driving shaft through the gear-rack mechanism, and the driving shaft drives the rotation of the driven shaft through the first tooth structure and the second tooth structure, so that the driven shaft switches the caster to the locked state. When the operator releases the pedal, the pedal will rebound under the action of the elastic force of the spring (the pedal moves away from the bottom plate). At this time, the chute will guide the sliding rod to fall on the convex block, and the convex block plays a role in supporting the sliding rod, so that the pedal will not continue to rebound after a short rebound. When the sliding rod moves from the position of the chute away from the bottom plate to the convex block, the rebound stroke of the pedal is the first distance. During the rebound of the pedal, the driving shaft will be driven to rotate through the gear-rack mechanism. At this time, the tooth gap between the first tooth structure and the second tooth structure is used to compensate for the first distance, so that during the rebound of the pedal, the driven shaft will not rotate; when it is necessary to switch the caster to the moving state, the operator can apply a downward pressure to the pedal to make it move towards the bottom plate (the moving distance is the first distance). During this process, the sliding rod will leave the convex block and move to the position of the chute away from the bottom plate under the guidance of the chute. When the operator releases the pedal, the pedal will rebound under the action of the elastic force of the spring. At this time, the sliding rod moves from the position of the chute away from the bottom plate to the position of the chute close to the bottom plate. During this process, the pedal drives the driving shaft to rotate briefly through the gear-rack mechanism, so that the first tooth structure and the second tooth structure come into contact. After releasing the pedal, the driving shaft drives the rotation of the driven shaft under the action of the spring, thus switching the caster to the moving state.Compared with the prior art, the parking device of the present invention can lock and unlock the casters by stepping on a pedal in one direction to realize the locking and unlocking cycle operation of the casters, and the operator will have a clear sense of segmentation and obvious feedback in the process of stepping on the pedal. The operator can understand the working status of the casters at this time through the foot feel and the position status of the pedal, thereby avoiding misoperation.

[0009] Optionally, both the slide groove and the protrusion are heart-shaped structures, and the tip of the heart-shaped structure is used to be arranged toward the bottom plate, and the protrusion is located at the center of the slide groove.

[0010] Optionally, an inclined surface structure is provided in the slide groove, and the inclined surface structure is used to guide the slide rod to move onto the protrusion.

[0011] Optionally, the bracket includes a connecting plate and a vertical frame, the connecting plate is used to be installed on the base plate, and the vertical frame is used to be connected to the end surface of the connecting plate facing away from the base plate.

[0012] Optionally, the pedal mechanism further includes a guide rail, the pedal is connected to the vertical frame via the guide rail, and the pedal is used to move toward or away from the connecting plate.

[0013] Optionally, the cross-section of the pedal is an inverted L-shape, and the pedal includes a vertical portion and a bent portion. When downward pressure is applied to the pedal toward the connecting plate and the pedal moves to a maximum stroke, the bent portion is used to abut against the vertical frame.

[0014] Optionally, the pedal mechanism also includes a square block and a round rod, the round rod is connected to the connecting plate, the square block is connected to the pedal, the square block is provided with a hole structure that matches the shape of the round rod, and the hole structure is coaxially arranged with the round rod, and the spring is sleeved on the round rod.

[0015] Optionally, the gear and rack mechanism includes a gear and a rack, the gear is connected to the driving shaft, the rack is connected to the pedal, and the gear is transmission-connected to the rack.

[0016] Optionally, the transmission mechanism further includes a torsion spring, which is sleeved on the driving shaft, one end of the torsion spring is connected to the gear, and the other end is used to connect to the base plate.

[0017] In addition, the present invention also provides a doctor's console, comprising the parking device as described above.

[0018] Since the technical improvements and technical effects of the doctor's console are the same as those of the parking device, the technical effects of the doctor's console will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Structural schematic of the parking device according to an embodiment of the present invention Figure 1 ;

[0020] Figure 2 Structural schematic of the parking device according to an embodiment of the present invention Figure 2 ;

[0021] Figure 3 is Figure 1 Partial enlarged view at position I in

[0022] Figure 4 is Figure 2 Partial enlarged view at position II in

[0023] Figure 5 is Figure 2 Section at A-A in Figure 1 ;

[0024] Figure 6 is Figure 2 Section at A-A in Figure 2 。

[0025] Explanation of reference numerals:

[0026] 1, pedal; 11, chute; 111, unlocking position; 112, rebounding position; 1121, first rebounding position; 1122, second rebounding position; 113, locking position; 12, bump; 13, inclined surface structure; 2, bracket; 21, connecting plate; 22, vertical frame; 3, swing rod; 31, sliding rod; 4, spring; 51, driving shaft; 511, first tooth structure; 52, driven shaft; 521, second tooth structure; 53, first bearing seat; 54, second bearing seat; 6, gear-rack mechanism; 61, gear; 62, rack; 7, guide rail; 8, torsion spring; 100, caster; 200, bottom plate. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the following describes the specific embodiments of the present invention in detail with reference to the drawings.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] Moreover, in the accompanying drawings, the Z-axis represents the vertical direction, that is, the up-and-down position, and the positive direction of the Z-axis (i.e., the direction pointed by the arrow of the Z-axis) 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; in the accompanying drawings, the X-axis represents the horizontal direction, that is, the left-and-right position, and the positive direction of the X-axis (i.e., the direction pointed by the arrow of the X-axis) represents right, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents left; in the accompanying drawings, the Y-axis represents the longitudinal direction, that is, the front-and-back position, and the positive direction of the Y-axis (i.e., the direction pointed by the arrow of the Y-axis) represents back, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) represents front.

[0030] It should be noted at the same time that the meanings represented by the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] As Figures 1 to 6 shown, a parking device according to an embodiment of the present invention is used for a doctor's console. The doctor's console includes a bottom plate 200 and casters 100 provided on the bottom plate 200. The parking device includes:

[0032] A foot pedal mechanism, which includes a pedal 1, a bracket 2, a swing rod 3 and a spring 4. The bracket 2 is used to be installed on the bottom plate 200. The pedal 1 is movably connected to the bracket 2. One end of the spring 4 is connected to the pedal 1 and the other end is connected to the bracket 2. The pedal 1 is provided with a chute 11 and a convex block 12. One end of the swing rod 3 is hinged to the bracket 2. The other end of the swing rod 3 is provided with a sliding rod 31. The sliding rod 31 is used to slide along the chute 11. The convex block 12 is used to support the sliding rod 31. When a downward pressure is applied to the pedal 1 and it moves to the maximum stroke, the sliding rod 31 is used to move to the position of the chute 11 away from the bottom plate 200. When the pressure on the pedal 1 is released, the chute 11 is used to guide the sliding rod 31 to move onto the convex block 12. When the sliding rod 31 moves from the position of the chute 11 away from the bottom plate 200 to the convex block 12, the movement stroke of the pedal 1 is the first distance;

[0033] The transmission mechanism includes a driving shaft 51, a driven shaft 52, a gear-rack mechanism 6, a first bearing block 53 and a second bearing block 54. The first bearing block 53 and the second bearing block 54 are installed on the bottom plate 200 at intervals. The driving shaft 51 is rotatably connected to the first bearing block 53, and the pedal 1 is connected to the driving shaft 51 through the gear-rack mechanism 6. The driven shaft 52 is rotatably connected to the second bearing block 54, and one end of the driven shaft 52 is used to connect to the caster 100. The rotation of the driven shaft 52 is used to change the working state of the caster 100. A first tooth structure 511 is provided at the end of the driving shaft 51 close to the driven shaft 52, and a second tooth structure 521 is provided at the end of the driven shaft 52 close to the driving shaft 51. The first tooth structure 511 is used for clearance fit connection with the second tooth structure 521, and the tooth gap between the first tooth structure 511 and the second tooth structure 521 is used to compensate for the first distance.

[0034] In this embodiment, by repeatedly stepping on the pedal 1 to lock and unlock the caster 100, the possibility of misoperation can be effectively prevented. Specifically, when the operator steps on the pedal 1, the pedal 1 can move relative to the bracket 2 in the direction close to the bottom plate 200 (in the Z-axis direction in the figure), and the spring 4 is in a compressed energy storage state. When the operator releases the pedal 1, under the action of the spring 4, the pedal 1 automatically resets. During the movement of the pedal 1, the driving shaft 51 can be driven to rotate through the gear-rack mechanism 6, and then the driven shaft 52 can be driven to rotate through the first tooth structure 511 on the driving shaft 51 and the second tooth structure 521 on the driven shaft 52. By the rotation of the driven shaft 52, the caster 100 can be switched to different working states (locked or walking). When the caster 100 is in the walking state, the slide bar 31 provided on the swing rod 3 is located at the position of the chute 11 close to the bottom plate 200, and at this time the spring 4 is in an uncompressed state; when it is necessary to switch the caster 100 to the locked state, the operator can apply a downward pressure to the pedal 1 to make it move in the direction close to the bottom plate 200 (in the Z-axis direction in the figure), and make the pedal 1 move to the maximum stroke (that is, if pressure is continuously applied, the pedal 1 will no longer continue to move in the direction close to the bottom plate 200). At this time, the slide bar 31 moves from the position of the chute 11 close to the bottom plate 200 to the position of the chute 11 far from the bottom plate 200. During this process, the pedal 1 will drive the driving shaft 51 to rotate through the gear-rack mechanism 6, and the driving shaft 51 drives the driven shaft 52 to rotate through the first tooth structure 511 and the second tooth structure 521, so that the driven shaft 52 switches the caster 100 to the locked state. When the operator releases the pedal 1, under the elastic force of the spring 4, the pedal 1 will rebound (the pedal 1 moves in the direction away from the bottom plate 200, that is, Figure 1 in the Z-axis direction in the figure), and at this time the spring 4 is in a compressed energy storage state again. Figure 1 in the Z-axis direction in the figure), and at this time the spring 4 is in a compressed energy storage state again. When the caster 100 is in the locked state, the slide bar 31 provided on the swing rod 3 is located at the position of the chute 11 far from the bottom plate 200. Figure 1In the Z-axis direction, at this time, the sliding groove 11 will guide the sliding rod 31 to fall on the convex block 12. The convex block 12 plays a role in supporting the sliding rod 31, so that the pedal 1 will not continue to rebound after a short rebound. When the sliding rod 31 moves from the position in the sliding groove 11 away from the bottom plate 200 to the convex block 12, the rebound stroke of the pedal 1 is the first distance. During the rebound process of the pedal 1, the driving shaft 51 will be driven to rotate through the gear-rack mechanism 6. At this time, the tooth gap between the first tooth structure 511 and the second tooth structure 521 is used to compensate for the first distance, so that the driven shaft 52 will not rotate during the rebound process of the pedal 1; when it is necessary to switch the caster 100 to the walking state, the operator can apply a downward pressure to the pedal 1 to make it move in the direction close to the bottom plate 200 (the moving distance is the first distance). During this process, the sliding rod 31 will leave the convex block 12 and move to the position in the sliding groove 11 away from the bottom plate 200 under the guidance of the sliding groove 11. When the operator releases the pedal 1, the elastic force of the spring 4 will drive the pedal 1 to rebound. At this time, the sliding rod 31 moves from the position in the sliding groove 11 away from the bottom plate 200 to the position in the sliding groove 11 close to the bottom plate 200. During this process, the pedal 1 drives the driving shaft 51 to rotate briefly through the gear-rack mechanism 6, so that the first tooth structure 511 contacts the second tooth structure 521. After releasing the pedal 1, the driving shaft 51 drives the driven shaft 52 to rotate under the action of the spring 4, thereby switching the caster 100 to the walking state. The parking device of the present invention, compared with the prior art, can lock and unlock the caster 100 by stepping on a pedal 1 in one direction to realize the locking and unlocking cyclic operation of the caster 100, and the operator will have an obvious sense of paragraph during the process of stepping on the pedal 1, and the feedback is relatively obvious. The operator can understand the working state of the caster 100 at this time through the foot feeling and the position state of the pedal 1, so as to avoid misoperation.

[0035] In the above working process, combined with the attached Figure 5 As shown, this is the transmission process schematic diagram of the first tooth structure 511 and the second tooth structure 521 during the locking operation of the caster 100. The first tooth structure 511 and the second tooth structure 521 can be a shrink disc structure with a tooth structure, or a tooth structure is provided at the opposite ends of the driving shaft 51 and the driven shaft 52. The driving shaft 51 and the driven shaft 52 are inserted into each other, and it is only necessary to ensure that the tooth gap between the first tooth structure 511 and the second tooth structure 521 can compensate for the first distance. When the pedal 1 is in a state without external force, and the tooth gap between the first tooth structure 511 and the second tooth structure 521 is always on the counterclockwise rotation side of the driving shaft 51, this is a necessary gap designed to overcome the rebound stroke of the pedal 1 (i.e., the first distance). In the attached Figure 5 a1 in is the initial state, b1 is the state of transmitting torque, and c1 is the state after releasing the pedal 1; combined with the attached Figure 6As shown, this is the schematic diagram of the transmission process between the first tooth structure 511 and the second tooth structure 521 during the unlocking operation of the caster 100. a2 is the initial state, b2 is the state when the pedal 1 is stepped on to the lowest position (attached Figure 1 or attached Figure 2 in the opposite direction of the Z-axis), and c1 is the state after the pedal 1 is released.

[0036] Optionally, both the chute 11 and the protrusion 12 are in a heart-shaped structure, and the tip of the heart-shaped structure is arranged towards the bottom plate 200. The protrusion 12 is located at the center of the chute 11.

[0037] In this embodiment, as shown in attached Figure 4 , both the chute 11 and the protrusion 12 are in a heart-shaped structure, and the tips of the heart-shaped structures of the chute 11 and the protrusion 12 are arranged downward (attached Figure 1 or attached Figure 2 in the opposite direction of the Z-axis). The chute 11 includes an unlocking position 111, a rebound position 112, and a locking position 113. The rebound position 112 includes a first rebound position 1121 and a second rebound position 1122. When the slide bar is at the unlocking position 111, the caster 100 is in a walking state. When it is necessary to switch the caster 100 to the locked state, when the operator applies a downward pressure on the pedal 1 and moves to the maximum stroke, the slide bar 31 moves from the unlocking position 111 to the first rebound position 1121. When the pressure on the pedal 1 is released, the slide bar 31 moves from the first rebound position 1121 to the locking position 113, and the protrusion 12 is used to support the slide bar 31 at the locking position 113. When the slide bar 31 moves from the rebound position 112 to the locking position 113, the movement stroke of the pedal 1 is the first distance. When it is necessary to switch the caster 100 to the walking state, step on the pedal 1 again, and then quickly lift the foot off the pedal 1 without staying on the pedal 1, as this will cancel out the elastic force of the spring 4, resulting in possible abnormal unlocking. During the unlocking process, the slide bar 31 first moves from the locking position 113 to the second rebound position 1122, and then the slide bar 31 moves from the second rebound position 1122 to the unlocking position 111 to complete a working cycle.

[0038] Optionally, an inclined surface structure 13 is arranged in the chute 11, and the inclined surface structure 13 is used to guide the slide bar 31 to move onto the protrusion 12.

[0039] In this embodiment, as shown in attached Figure 4 , an inclined surface structure 13 is arranged above the chute 11. The low end of the inclined surface structure 13 is arranged towards the first rebound position 1121, and the high end is arranged towards the second rebound position 112. The inclined surface structure 13 is used to guide the slide bar 31 to move from the first rebound position 1121 to the locking position 113 during the movement of the slide bar 31 in the chute 11, and is also used to guide the slide bar 31 to move from the locking position 113 to the second rebound position 1122.

[0040] Optionally, the bracket 2 includes a connecting plate 21 and a vertical frame 22. The connecting plate 21 is used to be mounted on the bottom plate 200, and the vertical frame 22 is used to be connected to the end face of the connecting plate 21 facing away from the bottom plate 200.

[0041] In this embodiment, in combination with the attached Figure 1 As shown, the connecting plate 21 can be connected to the bottom plate 200 by bolts. Between the vertical frame 22 and the connecting plate 21, they can be connected by bolts, welded or integrally formed. The pedal 1 is used to move up and down along the vertical frame 22 (in the Z-axis direction in the attached Figure 1 drawing).

[0042] Optionally, the foot pedal mechanism further includes a guide rail 7. The pedal 1 is connected to the vertical frame 22 through the guide rail 7, and the pedal 1 is used to move towards or away from the connecting plate 21.

[0043] In this embodiment, in combination with the attached Figure 1 As shown, a guide rail 7 is installed between the pedal 1 and the vertical frame 22. The pedal 1 can move up and down along the vertical frame 22 through the guide rail 7 (in the Z-axis direction in the attached Figure 1 drawing).

[0044] Optionally, the cross-section of the pedal 1 is in an inverted L shape, and the pedal 1 includes a vertical portion and a bent portion. When a downward pressure is applied to the pedal 1 towards the direction close to the connecting plate 21 and it moves to the maximum stroke, the bent portion is used to abut against the vertical frame 22.

[0045] In this embodiment, in combination with the attached Figure 1 As shown, the pedal 1 has an inverted L-shaped structure, where the bent portion is located at the upper end of the vertical portion (in the positive Z-axis direction in the attached Figure 1 drawing). The operator can step on the bent portion of the pedal 1 and make the bent portion abut against the upper end of the vertical frame 22. When the bent portion of the pedal 1 contacts the upper end of the vertical frame 22, the pedal 1 moves to the maximum stroke.

[0046] Optionally, the foot pedal mechanism further includes a square block and a round rod. The round rod is connected to the connecting plate 21, the square block is connected to the pedal 1. The square block is provided with a hole structure adapted to the shape of the round rod, and the hole structure is coaxially arranged with the round rod. The spring 4 is sleeved on the round rod.

[0047] In this embodiment, in combination with the attached Figure 1 As shown, the round rod can be connected to the connecting plate 21 by welding, the square block can be connected to the pedal 1 by bolts. During the downward (in the reverse Z-axis direction in the attached Figure 1 drawing) movement of the pedal 1, the round rod will be inserted into the hole structure of the square block, and the square block will compress the spring 4. The round rod can make the spring 4 be compressed evenly.

[0048] Optionally, the rack and pinion mechanism 6 includes a pinion 61 and a rack 62. The pinion 61 is connected to the driving shaft 51, the rack 62 is connected to the pedal 1, and the pinion 61 is in transmission connection with the rack 62.

[0049] In this embodiment, with reference to the attached Figure 1 As shown, a further example will be given for the above-mentioned "first distance". When the operator steps on the pedal 1, the rack 62 is displaced downward by 25 mm (this value is for illustrative purposes to more intuitively explain the "first distance"), and rebounds by 5 mm (the first distance) after releasing the pedal 1. The actual displacement of the rack 62 is 20 mm. At this time, the pinion 61 rotates correspondingly by 56.25 degrees and rebounds by 11.25 degrees, and the driven shaft 52 actually rotates by 45 degrees. It can be understood that the tooth gap between the first tooth structure 511 and the second tooth structure 521 is used to compensate for the above 5 mm.

[0050] Optionally, the transmission mechanism further includes a torsion spring 8. The torsion spring 8 is sleeved on the driving shaft 51. One end of the torsion spring 8 is connected to the pinion 61, and the other end is used to connect to the bottom plate 200.

[0051] In this embodiment, with reference to the attached Figure 1 As shown, one end of the torsion spring 8 can be connected to the pinion 61 by bolts, and the other end can be connected to the bottom plate 200 by bolts. The torsion spring 8 can provide an unlocking force during rebound, and the initial force can be adjusted by pre-tightening during actual installation.

[0052] In addition, the doctor console according to another embodiment of the present invention includes the parking device as described above.

[0053] Since the technical improvement and the achieved technical effects of the doctor console are the same as those of the parking device, the technical effects of the doctor console will not be described in detail herein.

[0054] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0055] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A parking device for a doctor's console, the doctor's console including a bottom plate (200) and casters (100) provided on the bottom plate (200). Characterized in that the parking device includes: A foot pedal mechanism, which includes a pedal (1), a bracket (2), a swing rod (3) and a spring (4). The bracket (2) is used to be installed on the bottom plate (200). The pedal (1) is movably connected to the bracket (2). One end of the spring (4) is connected to the pedal (1), and the other end is connected to the bracket (2). A chute (11) and a convex block (12) are provided on the pedal (1). One end of the swing rod (3) is hinged to the bracket (2), and a slide rod (31) is provided at the other end of the swing rod (3). The slide rod (31) is used to slide along the chute (11), and the convex block (12) is used to support the slide rod (31). When a downward pressure is applied to the pedal (1) and it moves to the maximum stroke, the slide rod (31) is used to move to a position in the chute (11) away from the bottom plate (200). When the pressure on the pedal (1) is released, the chute (11) is used to guide the slide rod (31) to move onto the convex block (12). When the slide rod (31) moves from the position in the chute (11) away from the bottom plate (200) to the convex block (12), the movement stroke of the pedal (1) is a first distance. A transmission mechanism, which includes a driving shaft (51), a driven shaft (52), a gear-rack mechanism (6), a first bearing seat (53) and a second bearing seat (54). The first bearing seat (53) and the second bearing seat (54) are installed on the bottom plate (200) at intervals. The driving shaft (51) is rotatably connected to the first bearing seat (53), and the pedal (1) is connected to the driving shaft (51) through the gear-rack mechanism (6). The driven shaft (52) is rotatably connected to the second bearing seat (54), and one end of the driven shaft (52) is used to be connected to the caster (100). The rotation of the driven shaft (52) is used to change the working state of the caster (100). A first tooth structure (511) is provided at the end of the driving shaft (51) close to the driven shaft (52), and a second tooth structure (521) is provided at the end of the driven shaft (52) close to the driving shaft (51). The first tooth structure (511) is used to be connected with the second tooth structure (521) in clearance fit, and the tooth gap between the first tooth structure (511) and the second tooth structure (521) is used to compensate for the first distance.

2. The parking device according to claim 1, Characterized in that both the chute (11) and the convex block (12) are in a heart-shaped structure, and the tip of the heart-shaped structure is arranged towards the bottom plate (200). The convex block (12) is located at the central position of the chute (11).

3. The parking device according to claim 1, Characterized in that The chute (11) is provided with an inclined surface structure (13) for guiding the sliding rod (31) to move onto the bump (12).

4. The parking device according to claim 1, wherein, the bracket (2) includes a connecting plate (21) and a vertical frame (22). The connecting plate (21) is used for being mounted on the bottom plate (200), and the vertical frame (22) is used for being connected to the end surface of the connecting plate (21) facing away from the bottom plate (200).

5. The parking device according to claim 4, wherein, the foot pedal mechanism further includes a guide rail (7). The pedal (1) is connected to the vertical frame (22) through the guide rail (7), and the pedal (1) is used for moving towards or away from the connecting plate (21).

6. The parking device according to claim 4, wherein, the cross-section of the pedal (1) is in an inverted L shape, and the pedal (1) includes a vertical portion and a bent portion. When a downward pressure is applied to the pedal (1) towards the direction close to the connecting plate (21) and moves to the maximum stroke, the bent portion is used for abutting against the vertical frame (22).

7. The parking device according to claim 4, wherein, the foot pedal mechanism further includes a square block and a round rod. The round rod is connected to the connecting plate (21), the square block is connected to the pedal (1), the square block is provided with a hole structure adapted to the shape of the round rod, and the hole structure is coaxially arranged with the round rod. The spring (4) is sleeved on the round rod.

8. The parking device according to claim 1, wherein, the gear-rack mechanism (6) includes a gear (61) and a rack (62). The gear (61) is connected to the driving shaft (51), the rack (62) is connected to the pedal (1), and the gear (61) is in driving connection with the rack (62).

9. The parking device according to claim 8, wherein, the transmission mechanism further includes a torsion spring (8). The torsion spring (8) is sleeved on the driving shaft (51), one end of the torsion spring (8) is connected to the gear (61), and the other end is used for being connected to the bottom plate (200).

10. A doctor's console, wherein, it includes the parking device according to any one of claims 1 to 9.

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