Speed-adjustable medical caster

Abstract

The application discloses a speed-adjustable medical caster, which comprises a front shell body, a rear shell body and a roller set rotationally connected between the front shell body and the rear shell body, and a rotating speed adjusting structure is arranged between the front shell body and the roller set for adjusting the rotating speed of the roller set. Through the arrangement of the rotating speed adjusting structure, the rotating speed of the roller set can be flexibly controlled, so that the moving requirement in different medical scenarios can be adapted, the safety and the controllability of the medical equipment in the transfer process are effectively improved, and the applicability of the medical caster can be further improved.

Description

Technical Field

[0001] This application relates to the technical field of casters, and more particularly to an adjustable speed medical caster. Background Technology

[0002] Casters, whose main structure consists of a connecting bracket and rolling wheels, are used to install under equipment to allow it to move freely. Currently, casters are mostly used in industrial manufacturing equipment, household furniture, medical equipment, etc., and are indispensable items in daily life.

[0003] However, existing medical casters cannot adjust their speed according to the actual usage scenario. Instead, the speed is adjusted manually by the person pushing the caster, such as a doctor, nurse, or family member. This leads to operator fatigue and safety hazards, especially on slopes or under inertia, where loss of control and slippage are likely. Therefore, those skilled in the art urgently need to develop an adjustable-speed medical caster to meet practical application requirements. Utility Model Content

[0004] The main objective of this application is to provide an adjustable speed medical caster, which aims to solve the aforementioned technical problems.

[0005] An adjustable speed medical caster includes a front housing and a rear housing, and a roller assembly rotatably connected between the front housing and the rear housing. A speed adjustment structure for adjusting the speed of the roller assembly is provided between the front housing and the roller assembly.

[0006] The adjustable speed medical caster as described above, wherein the roller assembly includes: The roller has a recessed cavity at the center of its front side; A rotating bearing, which is embedded inside the accommodating cavity; A connecting shaft is provided, the middle part of which is connected to the rotating bearing, and its front and rear ends are respectively connected to the front housing and the rear housing, and a bearing limiting part for limiting the rotating bearing is provided in the middle part.

[0007] The adjustable speed medical caster described above, wherein the speed adjustment structure includes: The locking slots are multiple in number and are spaced apart along the periphery of the accommodating cavity. A locking piece is sleeved on the connecting shaft, located in front of the adjusting shim, and its periphery is provided with a locking part that can be adapted to and connected to each of the locking slots. A friction deceleration plate is sleeved on the connecting shaft and located in front of the clamping plate, used to reduce the rotational speed of the clamping plate by friction; A pressure spring is sleeved on the connecting shaft and located in front of the friction deceleration plate; The recessed connecting groove is engaged with the front side of the front housing, and a left clearance through hole is provided on the left side of its interior, and a right clearance through hole is provided on the right side of its interior. A passive pusher is sleeved on the connecting shaft, located in front of the pressing spring, and has a left front oblique pusher that can extend forward from the left clearance through hole on its left front side, and a right front oblique pusher that can extend forward from the right clearance through hole on its right front side. An acceleration indicator limiter is located on the upper right side outside the recessed connecting groove; The deceleration indicator limit part is located on the lower left side outside the rear recessed connecting groove; A rotating component is rotatably connected to the rear recessed connecting groove, and is provided with a rear first inclined push part and a rear second inclined push part at intervals on its rear side, and is provided with a lever handle on its front side that can move between the acceleration indicator limit part and the deceleration indicator limit part. The rear first oblique push part is adapted and connected to the left front oblique push part, and the rear second oblique push part is adapted and connected to the right front oblique push part.

[0008] As described above, in the adjustable speed medical caster, the left front oblique push part and the right front oblique push part are arranged in a centrally symmetrical manner; The first and second oblique push sections are arranged symmetrically at the center.

[0009] As described above, the adjustable speed medical caster has a left front oblique push part arranged from low to high in a clockwise direction, and a left front engagement part is provided on its front surface. The rear oblique push portion includes a rear oblique push tooth portion and a rear oblique push groove arranged in a clockwise direction. The rear oblique push tooth portion can engage with the left front engagement portion, and the rear oblique push groove can accommodate the left front oblique push portion. The right front oblique push part is arranged from low to high in a clockwise direction, and a right front engagement part is provided on its front surface; The rear two oblique push portion includes rear two oblique push tooth-shaped portion and rear two oblique push groove arranged in a clockwise direction. The rear two oblique push tooth-shaped portion can engage with the right front engagement portion, and the rear two oblique push groove can accommodate the right front oblique push portion.

[0010] The adjustable speed medical caster as described above further includes: The brake spring has its left end engaged between the front housing and the rear housing, and its right end extending to the right between the right side of the front housing and the right side of the rear housing. The brake pedal is hinged between the front housing and the rear housing, and has a brake pedal on its upper right side, a brake release on its upper left side, and a lower right pressing part on its lower right side for pressing down the right side of the brake spring.

[0011] The adjustable speed medical caster as described above further includes: A fixed connector is located between the upper left of the front housing and the rear housing; The mounting connection post is located on the fixed connector and is used for connecting external equipment.

[0012] Compared with the prior art, the above application has the following advantages: The adjustable speed medical caster of this application can flexibly control the rotation speed of the roller assembly through the setting of the speed adjustment structure, thereby adapting to the movement needs in different medical scenarios, effectively improving the safety and maneuverability of medical equipment during transportation, and further enhancing the applicability of medical casters. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the adjustable speed medical caster of this application.

[0015] Figure 2 This is a partial exploded view of the adjustable speed medical caster of this application.

[0016] Figure 3 for Figure 2 Local magnification Figure I .

[0017] Figure 4 This is a perspective view of the front housing of the adjustable speed medical caster described in this application.

[0018] Figure 5 This is an exploded view of the front housing, passive pusher, and rotating component of the adjustable speed medical caster described in this application.

[0019] Figure 6 This is a perspective view of the passive pusher component described in the adjustable speed medical caster of this application.

[0020] Figure 7 This is a cross-sectional view of the adjustable speed medical caster of this application.

[0021] Figure 8 for Figure 7 Local magnification Figure II . Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0025] like Figures 1 to 8 As shown, an adjustable speed medical caster includes a front housing 100 and a rear housing 200, and a roller assembly 300 rotatably connected between the front housing 100 and the rear housing 200. A speed adjustment structure 400 for adjusting the speed of the roller assembly 300 is provided between the front housing 100 and the roller assembly 300.

[0026] The adjustable speed medical caster of this application, through the setting of the speed adjustment structure 400, can flexibly control the rotation speed of the roller assembly 300, thereby adapting to the movement needs in different medical scenarios, effectively improving the safety and maneuverability of medical equipment during transportation, and further enhancing the applicability of the medical caster.

[0027] Furthermore, the roller assembly 300 includes rollers 31, a rotating bearing 32, and a connecting shaft 33; The roller 31 has a recessed cavity 311 at the center of its front side; the rotating bearing 32 is embedded in the cavity 311; the connecting shaft 33 is connected to the rotating bearing 32 at its center, and its front and rear ends are connected to the front housing 100 and the rear housing 200 respectively, and a bearing limiting part 331 for limiting the rotating bearing 32 is provided in its center.

[0028] The roller assembly 300 described in this application achieves stable rotation of the roller assembly 300 by opening a cavity 311 in the roller 31 and embedding a rotating bearing 32 therein, and by cooperating with the rotating shaft 33 and the rotating bearing 32. At the same time, the bearing limiting part 33 on the connecting shaft 31 is used to axially position the rotating bearing 32 to prevent it from shifting during operation, thus ensuring that the roller assembly 300 runs smoothly, has low noise, and has a long service life.

[0029] Furthermore, the speed adjustment structure 400 includes a locking slot 41, a locking piece 42, a friction deceleration piece 43, a pressing spring piece 44, a rear concave connecting groove 45, a passive pusher 46, an acceleration indicator limiter 47, a deceleration indicator limiter 48, and a rotating piece 49. The number of the locking slots 41 is multiple, and they are spaced apart along the periphery of the accommodating cavity 311. The locking piece 42 is sleeved on the connecting shaft 33, located in front of the adjusting shim 40, and its periphery is provided with a locking part 421 that can be adapted to and connected to each of the locking slots 41. The friction deceleration plate 43 is sleeved on the connecting shaft 33 and located in front of the clamping plate 42, and is used to reduce the rotational speed of the clamping plate 42 by friction. The pressing spring 44 is sleeved on the connecting shaft 33 and is located in front of the friction deceleration plate 43; The recessed connecting groove 45 is engaged with the front side of the front housing 100, and a left clearance through hole 451 is opened on the left side inside, and a right clearance through hole 452 is opened on the right side inside. The passive pusher 46 is sleeved on the connecting shaft 33, located in front of the pressing spring 44, and has a left front oblique pusher 461 that can extend forward from the left clearance through hole 451 on its left front side, and a right front oblique pusher 462 that can extend forward from the right clearance through hole 452 on its right front side. The acceleration indicator limiting part 47 is located on the upper right side outside the recessed connecting groove 45; The deceleration indicator limiting part 48 is located on the lower left side outside the rear recessed connecting groove 45; The rotating component 49 is rotatably connected to the rear concave connecting groove 45, and is provided with a rear first inclined push part 491 and a rear second inclined push part 492 at intervals on its rear side, and is provided with a lever handle 493 on its front side that can move between the acceleration indicator limit part 47 and the deceleration indicator limit part 48. The rear first oblique push part 491 is adapted and connected to the left front oblique push part 461, and the rear second oblique push part 492 is adapted and connected to the right front oblique push part 462.

[0030] When the lever 493 on the rotating component 49 is turned toward the deceleration indicator limit 48, the rear first oblique push part 491 pushes the left front oblique push part 461 backward, and at the same time, the rear second oblique push part 492 also pushes the right front oblique push part 462 backward. This forces the passive pusher 46 to move backward along the connecting shaft 33, causing the pressing spring 44 to compress and drive the friction deceleration plate 43 to make close contact with the locking plate 42, increasing the rotational damping and reducing the speed. Conversely, when the lever 493 on the rotating component 49 is turned toward the acceleration indicator limit 47, the rear first oblique push part 491 and the rear second oblique push part 492 release the left front oblique push part 461 and the right front oblique push part 462 in opposite directions. The passive pusher 46 moves forward under the elastic recovery of the pressing spring 44, causing the friction deceleration plate 43 to disengage from the locking plate 42, reducing the rotational damping and increasing the speed.

[0031] This application achieves precise control of rotational damping through the design of the speed adjustment structure 400, meeting the speed adjustment needs in different environments; at the same time, the structure is easy to operate, and users can quickly switch rotational states by simply turning the handle 493, improving the user experience.

[0032] Furthermore, the left front oblique push portion 461 and the right front oblique push portion 462 are arranged in a centrally symmetrical manner; the rear oblique push portion 491 and the rear second oblique push portion 492 are arranged in a centrally symmetrical manner.

[0033] Furthermore, the left front oblique push part 461 is arranged from low to high in a clockwise direction, and a left front engagement part 4611 is provided on its front surface. The rear oblique push portion 491 includes a rear oblique push tooth portion 4911 and a rear oblique push groove 4912 arranged in a clockwise direction. The rear oblique push tooth portion 4911 can engage with the left front engagement portion 4611, and the rear oblique push groove 4912 can accommodate the left front oblique push portion 461. The rear oblique push tooth-shaped portion 4911 engages with the left front meshing portion 4611. The right front oblique push part 462 is arranged from low to high in a clockwise direction, and a right front engagement part 4621 is provided on its front surface; The rear two oblique push portion 492 includes a rear two oblique push tooth portion 4921 and a rear two oblique push groove 4922 arranged in a clockwise direction. The rear two oblique push tooth portion 4921 can engage with the right front engagement portion 4621, and the rear two oblique push groove 4922 can accommodate the right front oblique push portion 462.

[0034] This application uses a meshing connection to form a stable transmission between the rotating part 49 and the passive pusher 46, effectively preventing slippage or springback.

[0035] Furthermore, the speed adjustment structure 400 also includes an adjustment shim 40, which is sleeved on the connecting shaft 33 and located between the retaining plate 42 and the bearing limiting part 331. The adjustment shim 40 is used to adjust the specific position of the retaining plate 42, so as to be more flexibly applicable to actual assembly needs.

[0036] Furthermore, the adjustable speed medical caster also includes a brake spring 500 and a brake pedal 600; The left end of the brake spring 500 is engaged between the front housing 100 and the rear housing 200, and its right end extends to the right between the right side of the front housing 100 and the right side of the rear housing 200. The brake pedal 600 is hinged between the front housing 100 and the rear housing 200, and has a brake pedal 61 on its upper right side, a brake release 62 on its upper left side, and a lower right pressing part 63 on its lower right side for pressing down the right side of the brake spring 500. Its purpose is to meet the requirements for stopping the vehicle.

[0037] Furthermore, the adjustable speed medical caster also includes a fixed connector 700 and a mounting connector 800; the fixed connector 700 is located between the upper left of the front housing 100 and the rear housing 200; the mounting connector 800 is located on the fixed connector 700 and is used for connecting external devices. Its advantage lies in ensuring a stable assembly between the caster and the medical device.

[0038] The above description is one implementation method provided in conjunction with specific content, and does not imply that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to or identical to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. An adjustable speed medical caster, comprising a front housing (100) and a rear housing (200), and a roller assembly (300) rotatably connected between the front housing (100) and the rear housing (200), characterized in that: A speed adjustment structure (400) for adjusting the speed of the roller assembly (300) is provided between the front housing (100) and the roller assembly (300).

2. The adjustable speed medical caster according to claim 1, characterized in that, The roller assembly (300) includes: The roller (31) has a recessed cavity (311) in the middle of its front side. Rotary bearing (32), which is embedded inside the accommodating cavity (311); A connecting shaft (33) is provided, the middle part of which is connected to the rotating bearing (32), and its front and rear ends are respectively connected to the front housing (100) and the rear housing (200), and a bearing limiting part (331) for limiting the rotating bearing (32) is provided in the middle part.

3. The adjustable speed medical caster according to claim 2, characterized in that, The speed adjustment structure (400) includes: The number of locking slots (41) is multiple, and they are spaced apart along the periphery of the accommodating cavity (311); The locking piece (42) is sleeved on the connecting shaft (33), located in front of the adjusting shim, and its periphery is provided with a locking part (421) that can be adapted to and connected to each of the locking slots (41). Friction deceleration plate (43), which is sleeved on the connecting shaft (33) and located in front of the clamping plate (42), is used to reduce the rotation speed of the clamping plate (42) by friction; The pressure spring (44) is sleeved on the connecting shaft (33) and located in front of the friction deceleration plate (43); The rear recessed connecting groove (45) is engaged with the front side of the front housing (100), and a left clearance through hole (451) is opened on the left side inside, and a right clearance through hole (452) is opened on the right side inside. The passive pusher (46) is sleeved on the connecting shaft (33), located in front of the pressing spring (44), and has a left front oblique pusher (461) that can extend forward through the left clearance through hole (451) on its left front side, and a right front oblique pusher (462) that can extend forward through the right clearance through hole (452) on its right front side. Acceleration indicator limit part (47) is provided on the upper right side outside the rear recessed connecting groove (45); The deceleration indicator limit part (48) is located on the lower left side outside the rear recessed connecting groove (45); The rotating part (49) is rotatably connected to the rear concave connecting groove (45), and is provided with a rear first inclined push part (491) and a rear second inclined push part (492) at intervals on its rear side, and is provided with a lever handle (493) on its front side that can move between the acceleration indicator limit part (47) and the deceleration indicator limit part (48). The rear first oblique push part (491) is adapted and connected to the left front oblique push part (461), and the rear second oblique push part (492) is adapted and connected to the right front oblique push part (462).

4. The adjustable speed medical caster according to claim 3, characterized in that, The left front oblique push part (461) and the right front oblique push part (462) are arranged in a centrally symmetrical manner; The rear first oblique push part (491) and the rear second oblique push part (492) are arranged in a centrally symmetrical manner.

5. The adjustable speed medical caster according to claim 4, characterized in that, The left front oblique push part (461) is arranged from low to high in a clockwise direction, and a left front engagement part (4611) is provided on its front surface. The rear oblique push portion (491) includes a rear oblique push tooth portion (4911) and a rear oblique push groove (4912) arranged in a clockwise direction. The rear oblique push tooth portion (4911) can engage with the left front engagement portion (4611), and the rear oblique push groove (4912) can accommodate the left front oblique push portion (461). The right front oblique push part (462) is arranged from low to high in a clockwise direction, and a right front engagement part (4621) is provided on its front surface. The rear two oblique push portion (492) includes a rear two oblique push tooth portion (4921) and a rear two oblique push groove (4922) arranged in a clockwise direction. The rear two oblique push tooth portion (4921) can engage with the right front engagement portion (4621), and the rear two oblique push groove (4922) can accommodate the right front oblique push portion (462).

6. The adjustable speed medical caster according to claim 5, characterized in that, The adjustable speed medical caster also includes: The brake spring (500) has its left end engaged between the front housing (100) and the rear housing (200), and its right end extends to the right between the right side of the front housing (100) and the right side of the rear housing (200); The brake pedal (600) is hinged between the front housing (100) and the rear housing (200), and has a brake pedal (61) on its upper right side, a brake pedal unlocking part (62) on its upper left side, and a lower right pressing part (63) on its lower right side for pressing down the right side of the brake spring (500).

7. The adjustable speed medical caster according to claim 6, characterized in that, The adjustable speed medical caster also includes: A fixed connector (700) is disposed between the front housing (100) and the rear housing (200) at the upper left position; The mounting connector (800) is located on the fixed connector (700) and is used for connecting external equipment.

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