Pedal structure capable of being quickly assembled and disassembled

Abstract

The utility model discloses a pedal structure capable of being quickly assembled and disassembled, which comprises a pedal, a lower limb shaft and a lower limb shaft strip, the lower limb shaft comprises a spring plunger and a bearing sleeve, the spring plunger is arranged on the lower limb shaft, the bearing sleeve is sleeved on the lower limb shaft and fixed on the pedal, the structure is simple, the cost is low, and the operation is simple. And meanwhile, through the structure, the limited spring plunger is prevented from loosening, so that the pedal is ensured to be stably mounted on the lower limb shaft strip, and the pedal can be quickly mounted and dismounted under the condition that tools are not used.

Description

Technical Field

[0001] This utility model relates to the field of upper and lower limb motor rehabilitation technology, specifically to a foot pedal structure that can be quickly assembled and disassembled. Background Technology

[0002] Many training devices now feature detachable foot pedals that can be positioned in different locations to accommodate the rehabilitation needs of patients of varying heights. While the adjustment mechanisms differ slightly on the market, the underlying principle is similar: the lower limb axle has several foot pedal position adjustment holes, and the foot pedals are fixedly connected to the lower limb axle. The lower limb axle can be inserted into the foot pedal position adjustment holes on the axle, and a fastening screw is used to secure the axle and prevent it from detaching from the axle. Because easy disassembly and adjustment are necessary, the fixing screws cannot be secured with thread-locking adhesive or other methods. After prolonged use, the fastening screws are prone to loosening, which can easily lead to the lower limb axle detaching and hinder rehabilitation training.

[0003] Because existing rehabilitation training equipment relies on tightening screws for extended periods, the lower limb axis is prone to detachment, posing a safety hazard when using such equipment for rehabilitation training. Therefore, this invention aims to provide a foot pedal structure that allows for quick assembly and disassembly, effectively addressing the problems existing in the prior art. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a foot pedal structure that can be quickly installed and disassembled. It has the advantages of simple structure, low cost, and convenient disassembly, assembly and adjustment. At the same time, through the structure itself, plus the spring plunger to prevent the lower limb shaft from loosening, the foot pedal is securely installed on the lower limb shaft, thus ensuring the safety and reliability of the rehabilitation training equipment.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A quick-release foot pedal structure, characterized in that it includes:

[0007] Foot pedals that connect to the active and passive rehabilitation training devices for the upper and lower limbs;

[0008] The lower limb shaft has one end detachably connected to the foot pedal;

[0009] The lower limb axle is connected to the lower limb axle, and the lower limb axle is linked to the foot pedal through the lower limb axle;

[0010] A spring plunger, installed in a mounting hole at the other end of the lower limb shaft, has a limiting function to prevent the lower limb shaft from falling off.

[0011] Furthermore, the spring plunger consists of a plunger body, a spring, and a plunger head. The plunger body is installed in the mounting hole, and an inwardly recessed mounting groove is provided at the center of one end of the plunger body. The diameter of the plunger head is smaller than the diameter of the plunger body. The spring is installed in the mounting groove, and the plunger head is connected to the spring. The bottom of the plunger head is locked and engaged at the edge of the mounting groove, allowing the plunger head to move linearly back and forth within the mounting groove.

[0012] Furthermore, the top of the column head protrudes outside the column body, the spring is in a compressed state, and the column head is always in a protruding state due to the upward force of the spring.

[0013] Furthermore, the outer surface of the cylinder is provided with external threads, and the mounting hole is provided with internal threads that are threadedly connected to the external threads.

[0014] Furthermore, the lower limb axis includes a limiting satin surface and a flat surface, with the limiting end face disposed in the middle of the lower limb axis; the lower limb axis has a first flat surface disposed on its circumferential surface.

[0015] Furthermore, the lower limb axle is provided with at least two foot pedal position adjustment holes along its length, and the foot pedal position adjustment holes are provided with a second flat part that mates with the first flat part; and the opening of the foot pedal position adjustment hole is provided with an outwardly widening guide slope.

[0016] Furthermore, the lower limb shaft has a lower plane on its circumferential lower surface; the mounting hole is a through hole, the spring plunger is installed in the through hole, and the lower end face of the spring plunger is flush with the lower plane.

[0017] Furthermore, it also includes a bearing, a retaining ring, and a bearing sleeve. A retaining groove is provided at one end of the lower limb shaft near the foot pedal, and the retaining ring is installed in the retaining groove. The lower limb shaft is fixedly installed on the foot pedal by the bearing and the bearing sleeve. The retaining ring is installed near the bearing to prevent the bearing from moving.

[0018] Furthermore, the bearing sleeve is provided with fastening holes for installing fastening screws.

[0019] Furthermore, the foot pedal is shaped like a foot, with protective plates on three sides to protect the feet.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This utility model features a simple structure, low cost, and convenient disassembly, assembly, and adjustment. Furthermore, the structure itself, along with a spring plunger to prevent the lower limb axle from loosening, ensures the foot pedal is securely mounted on the lower limb axle, guaranteeing the safety and reliability of the rehabilitation training equipment. It can also be quickly assembled and disassembled without tools. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1This is a structural diagram of a quick-assembly and disassembly foot pedal structure according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the lower limb shaft and bearing in this utility model;

[0025] Figure 3 This is a schematic diagram of the lower limb axis in this utility model;

[0026] Figure 4 This is a structural schematic diagram of the lower limb axis from another perspective in this utility model;

[0027] Figure 5 This is a schematic diagram of the lower limb shaft in this utility model;

[0028] Figure 6 This is a cross-sectional view of the spring plunger in this utility model;

[0029] Figure 7 This is a schematic diagram of the bearing sleeve in this utility model.

[0030] In the diagram: 1-Foot pedal; 2-Lower limb axle; 3-Lower limb axle; 20-Bearing; 21-Limiting end face; 22-Spring plunger; 30-Snap ring; 31-First flat position; 40-Foot pedal position adjustment hole; 41-Second flat position; 50-Slot; 51-Lower plane; 60-Bearing sleeve; 61-Fasting hole; 70-Column; 71-Column head; 72-Spring. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example 1

[0033] like Figures 1 to 6 As shown, this utility model provides a quick-assembly and detachable foot pedal structure, including a foot pedal 1 that connects to an active and passive rehabilitation training device for the upper and lower limbs. One end of the lower limb shaft 3 is detachably connected to the foot pedal 1. The lower limb shaft strip 2 is sleeved with the lower limb shaft 3. The lower limb shaft strip 2 is linked to the foot pedal 1 through the lower limb shaft 3. A spring plunger 22 is installed in the mounting hole at the other end of the lower limb shaft 3. It has a limiting function and can prevent the lower limb shaft strip 2 from falling off.

[0034] The lower limb shaft 2 is fitted onto the lower limb shaft 3 and mounted on the foot pedal 1 via the lower limb shaft 3. A spring plunger 22 at the end of the lower limb shaft 3 effectively prevents the lower limb shaft 2 from falling off. This structure is easy to install and disassemble. When disassembling and adjusting the position of the foot pedal 1, press the spring plunger 22 and pull the lower limb shaft 2 outward to remove it from the lower limb shaft 3. Then, install the lower limb shaft 3 into the appropriate foot pedal position adjustment hole 40 on the lower limb shaft 2. Installation and disassembly can be completed manually without tools. It has the advantages of simple structure, low cost, and convenient disassembly and adjustment operation. At the same time, through the structure itself, plus the spring plunger 22 to prevent the lower limb shaft 2 from loosening, it is ensured that the foot pedal 1 is firmly mounted on the lower limb shaft 2, ensuring the safety and reliability of the rehabilitation training equipment.

[0035] The spring plunger 22 consists of a plunger body 70, a spring 72, and a plunger head 71. The plunger body 70 is installed in the mounting hole, and an inwardly recessed mounting groove is provided at the center of one end of the plunger body 70. The diameter of the plunger head 71 is smaller than the diameter of the plunger body 70. The spring 72 is installed in the mounting groove. The plunger head 71 is connected to the spring 72, and the bottom of the plunger head 71 is limited and engaged at the edge of the mounting groove. The plunger head 71 can move linearly back and forth in the mounting groove.

[0036] The top of the column head 71 protrudes outside the column body 70. The spring 72 is in a compressed state, and the column head 71 is always in a protruding state due to the pushing force of the spring 72.

[0037] The spring plunger 22 is installed in the mounting hole at the end of the lower limb shaft 3, which can effectively prevent the lower limb shaft 2 from falling off. The plunger head 71 is pushed outward by the elastic force of the spring 72. The top of the plunger head 71 protrudes from the column body 70 and has a limiting and blocking function to prevent the lower limb shaft 2 from falling off.

[0038] When it is necessary to disassemble and replace the foot pedal position adjustment hole 40 of the lower limb shaft 3, press down on the column head 71 under the action of external force. The column head 71 can sink into the mounting groove and become flush with the column body 70, making it easy to remove the lower limb shaft 2 from the lower limb shaft 3. The same applies during installation. Press down on the column head 71, and the column head 71 sinks into the mounting groove. Install the lower limb shaft 2 on the lower limb shaft 3. After the external force is removed, the column head 71 can return to its original position under the action of the spring 72, protruding from the column body 70, which has the function of limiting and blocking to prevent the lower limb shaft 3 from falling off.

[0039] The lower limb axis 3 includes a limiting end face 21 and a flat part. The limiting end face 21 is located in the middle of the lower limb axis 3. The lower limb axis 3 has a first flat part 31 on its circumferential surface.

[0040] The lower limb shaft 2 is provided with at least two foot pedal position adjustment holes 40 along its length direction. The foot pedal position adjustment hole 40 is provided with a second flat part 41 that is connected to the first flat part 31. The foot pedal position adjustment hole 40 is provided with an outwardly widening guide slope at the opening.

[0041] The lower limb shaft 3 is connected and fixed through the foot pedal position adjustment hole 40. The first flat part 31 and the second flat part 41 cooperate to prevent the lower limb shaft 3 from rotating. The limiting end face 21 prevents the lower limb shaft 3 from being inserted too deeply into the foot pedal 1, and has the function of limiting and fixing the installation. Multiple foot pedal position adjustment holes 40 can be opened on the lower limb shaft 2 according to design requirements to meet usage requirements. The guide slope is an outwardly widening slope, which facilitates the insertion of the lower limb shaft 3 into the foot pedal position adjustment hole 40 and has a guiding function. Similarly, the end of the lower limb shaft 3 can also be provided with an inwardly narrowing guide slope, which cooperates with the guide slope on the foot pedal position adjustment hole 40 to facilitate the insertion of the lower limb shaft 3 into the foot pedal position adjustment hole 40.

[0042] Example 2

[0043] Based on the structure of Embodiment 1, in Embodiment 2, the outer surface of the column 70 is provided with external threads, and the mounting hole is provided with internal threads that connect with the external threads. With this design, the column 70 of the spring plunger 22 can be fixed in the mounting hole by means of threaded connection, so that the connection is stable and firm.

[0044] Example 3

[0045] Based on the structure of Embodiment 1, in Embodiment 3, the lower limb shaft 3 has a lower plane 51 on its circumferential lower surface; the mounting hole is a through hole, and the spring plunger 22 is installed in the through hole, with the lower end face of the spring plunger 22 flush with the lower plane 51. When the mounting hole is a through hole, the spring plunger 22 is fixedly installed in the through hole, and the lower end face of the spring plunger 22 is flush with the lower plane 51 to prevent the spring plunger 22 from protruding out of the through hole and affecting the installation of the lower limb shaft 2; of course, the mounting hole can also be a blind hole, and the spring plunger 22 is fixed inside the blind hole by a threaded connection. In this case, there is no need to consider the situation where the bottom of the spring plunger 22 penetrates the lower limb shaft 3.

[0046] Example 4

[0047] like Figure 7 As shown, based on the structure of Embodiment 1, Embodiment 4 further includes a bearing, a retaining spring 30, and a bearing sleeve 60. A retaining groove 50 is provided at one end of the lower limb shaft 3 near the foot pedal 1. The retaining spring 30 is installed in the retaining groove 50. The lower limb shaft 3 is fixedly installed on the foot pedal 1 by the bearing and the bearing sleeve 60. The retaining spring 30 is installed near the bearing to prevent the bearing from shifting. The bearing sleeve 60 is fitted over the bearing to fix and protect it. At least two bearings are installed at the other end of the lower limb shaft 3, allowing for easy rotation during rehabilitation exercises. The retaining spring 30 restricts the bearings from falling off or shifting.

[0048] The bearing sleeve 60 is provided with a fastening hole 61, which is used to install a fastening screw to fasten the bearing sleeve 60 and achieve the effect of fixing the bearing. The foot pedal 1 is shaped like a foot and has protective plates on three sides to protect the foot.

[0049] The working principle of this utility model is as follows: During installation, the lower limb shaft 3, equipped with a foot pedal 1 and a spring plunger 22, is inserted into the lower limb shaft strip 2 from the end with the guide slope. The guide slope on the lower limb shaft strip 2 exerts a downward force on the spring plunger 22, compressing the plunger head 71 into the shaft body 70 of the lower limb shaft 3, which can pass through the foot pedal position adjustment hole 40. When the limiting end face 21 of the lower limb shaft 3 contacts the lower limb shaft strip 2, the plunger head 71 of the spring plunger 22 just disengages from the lower limb shaft strip 2, the downward force disappears, and the plunger head 71 pops out under the action of the spring 72, locking onto the end face of the lower limb shaft strip 2, preventing the lower limb shaft 3 from being pulled back. Since the diameter of the plunger 71 is smaller than that of the body 70, after the plunger 71 pops out, part of the spring plunger 22 is still inside the foot position adjustment hole 40 of the lower limb shaft 2, which restricts the spring plunger 22 from disengaging from the lower limb shaft 3. Even if it is loosened, the plunger 71 will still lock the lower limb shaft 2 and will not fall off.

[0050] When replacement is needed, press down on the plunger 71 of the spring plunger 22. The plunger 71 will disengage from the end face of the lower limb axle 2 and enter the foot pedal position adjustment hole 40. At the same time, pull the lower limb axle 3 back, disengaging it from the lower limb axle 2. Select the appropriate foot pedal position adjustment hole 40 and repeat the insertion operation.

[0051] During operation, the lower limb shaft 2 is rotated by the cooperation of the lower limb shaft 2 and the lower limb shaft 3.

[0052] The embodiments of this utility model are not limited thereto. Based on the above embodiments of this utility model, using conventional technical knowledge and common methods in the field, without departing from the basic technical idea of ​​this utility model and without conflict, the above preferred embodiments can be modified, replaced or combined in various other forms. All other embodiments obtained fall within the scope of protection of this utility model.

Claims

1. A quick-release foot pedal structure, characterized in that: The utility model provides a passive rehabilitation training device for connecting upper and lower limbs, which comprises a foot pedal, a lower limb shaft, a lower limb shaft strip, a spring plunger, a bearing, a clamping spring and a bearing sleeve. The foot pedal is connected to one end of the lower limb shaft in a detachable manner. The lower limb shaft strip is connected to the lower limb shaft sleeve and is linked with the foot pedal through the lower limb shaft. The spring plunger is installed in a mounting hole formed in the other end of the lower limb shaft and has a limiting function to prevent the lower limb shaft strip from falling off.

2. The pedal structure according to claim 1, wherein: The spring plunger is composed of a column body, a spring and a plunger head.

3. The pedal structure according to claim 2, wherein: The column body is installed in the mounting hole.

4. The pedal structure according to claim 2 or 3, wherein: An inwardly recessed mounting groove is formed in the center of one end of the column body.

5. The pedal structure according to claim 1, wherein: The plunger head has a smaller diameter than the column body.

6. The pedal structure according to claim 5, wherein: The spring is installed in the mounting groove.

7. The pedal structure according to claim 1, wherein: The plunger head is connected with the spring.

8. The pedal structure according to claim 1, wherein: The plunger head is limitedly clamped at the mounting groove edge at the bottom.

9. The pedal structure according to claim 8, wherein: The plunger head can move linearly and reciprocally in the mounting groove.

10. The pedal structure according to claim 1, wherein: The plunger head protrudes from the column body at the top. The spring is in a compressed state. The plunger head is always in a protruding state under the action of the spring force. An external thread is arranged on the outer surface of the column body. An internal thread is arranged in the mounting hole to be threadedly connected with the external thread. The lower limb shaft comprises a limiting end face and a flat face. The limiting end face is arranged in the middle of the lower limb shaft. A first flat face is arranged on the circumferential surface of the lower limb shaft. At least two foot pedal position adjusting holes are arranged along the length direction of the lower limb shaft strip. A second flat face is arranged on the foot pedal position adjusting hole to be connected with the first flat face. An outwardly widened guide slope is arranged at the opening of the foot pedal position adjusting hole. A lower flat face is arranged on the lower surface of the lower limb shaft. The mounting hole is a through hole. The spring plunger is installed in the through hole. The lower end face of the spring plunger is flush with the lower flat face. The bearing, the clamping spring and the bearing sleeve are further arranged. A clamping groove is formed in the end of the lower limb shaft close to the foot pedal. The clamping spring is installed in the clamping groove. The lower limb shaft is fixedly installed on the foot pedal through the bearing and the bearing sleeve. The clamping spring is installed close to the bearing to prevent the bearing from moving. The bearing sleeve is provided with a fastening hole for installing a fastening screw. The foot pedal has a palm shape. Three sides of the foot pedal are provided with protective plates for protecting the palm.

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