Pedal retracting and extending transmission structure

Abstract

The utility model discloses a pedal extension and retraction transmission structure, including transmission screw and the pedal body of the sleeve in transmission screw outside, is equipped with transmission part on the pedal body, and the pedal body forms transmission cooperation through transmission part and transmission screw, and the pedal body is individually retracted in transmission screw through transmission part. The transmission cooperation is completed by transmission part (elastic deformation can be generated) between the pedal body and transmission screw, when the power element appears power failure, axial force is applied to the pedal body, transmission part can be deformed and separate from the spiral groove due to the action in the spiral groove, and then axial retraction operation of the pedal body is completed, and the problem that the retraction action cannot be completed after the power source element appears power failure in the prior art is overcome.

Description

Technical Field

[0001] This utility model belongs to the field of electric luggage technology, specifically a pedal extension and retraction transmission structure. Background Technology

[0002] Existing electric luggage cases typically include foot pedals for carrying passengers while riding. These pedals are either fixed or concealed. Fixed pedals are exposed when not in use, increasing the risk of pedestrian accidents and compromising aesthetics and user experience. Concealed pedals are usually hidden in the side or bottom of the luggage case and come in manual or automatic versions. Manual operation requires manually extending the pedals, which is cumbersome. For example, the pedal-operated luggage case proposed in CN221082964U uses a screw drive mechanism to extend and retract the pedals under motor drive. However, in actual use, insufficient battery power can cause the motor to shut down. Due to the threaded connection between the pedals and the screw, a self-locking issue exists, preventing the pedals from retracting and creating a temporary fixed structure, leading to the problems associated with fixed structures. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to solve the problem that the existing foot pedal structure has a self-locking mechanism that makes it impossible to complete the retraction action when the motor is unexpectedly cut off from power.

[0004] To solve the above-mentioned technical problems, the inventors of this utility model, through practice and summarization, have derived the technical solution of this utility model, which adopts the following technical solution:

[0005] A pedal extension and retraction transmission structure includes a transmission screw and a pedal body fitted on the outside of the transmission screw. A transmission component is arranged on the pedal body, and the pedal body forms a transmission engagement with the transmission screw through the transmission component.

[0006] The pedal body retracts independently relative to the transmission screw via the transmission components.

[0007] In one optimized embodiment of this application, the transmission component includes a mounting groove disposed on the side of the pedal body, wherein a transmission body, an elastic body and a set screw are disposed in the mounting groove, the set screw compresses the transmission body through the elastic body, and the transmission body is adapted to the spiral groove of the transmission screw.

[0008] In one optimized embodiment of this application, the side of the transmission body facing the transmission screw is an arc surface or a spherical surface.

[0009] In one optimized embodiment of this application, the pedal body includes pedal one and pedal two, which are in sliding engagement.

[0010] The transmission component includes a slot provided on one side of the pedal, a movable body slidingly fitted in the slot, an inner extruder installed at the slot, an elastic element installed between the inner extruder and the movable body, and the end of the movable body facing away from the inner extruder fitted in a spiral groove on the surface of the transmission screw.

[0011] A pusher is installed on pedal two, and an insertion port for the pusher to enter is provided on pedal one. The insertion port and the slot are connected, and the end of the pusher away from pedal two extends into the insertion port.

[0012] In one optimized embodiment of this application, a pressure-bearing part is provided on the side of the moving body near the pushing member, and a pushing part is provided on the side of the pushing member near the moving body. The pushing part and the pressure-bearing part are positioned correspondingly and adapted to each other.

[0013] In one optimized embodiment of this application, a guide body is installed outside the pedal body, the guide body is arranged along the length direction of the transmission screw, and the pedal body extends and retracts along the length direction of the guide body.

[0014] In one optimized embodiment of this application, a limiting body is provided on the pedal body, and the limiting body is located in the area between two sets of guide bodies.

[0015] In one optimized embodiment of this application, the transmission components are arranged in two sets, which are located on both sides of the transmission screw.

[0016] In one optimized embodiment of this application, the transmission screw and the pedal body are symmetrically distributed in two sets.

[0017] In one optimized embodiment of this application, the cross-section of the pedal body is circular, square, or elliptical.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model uses a transmission component to complete the transmission connection between the pedal body and the transmission screw. When the power source is de-energized, an axial force is applied to the pedal body. Since the transmission component acts within the spiral groove, it can deform under force and disengage from the spiral groove, thereby completing the axial retraction of the pedal body. This overcomes the problem in the prior art that the retraction action cannot be completed once the power source is de-energized.

[0020] 2. The transmission component of this utility model employs a set screw, an elastic body, and a transmission body to achieve flexible transmission. Under normal energization of the power element, the transmission can be completed normally, thereby realizing the extension and retraction of the pedal body. The set screw can adjust the initial force exerted by the elastic body on the helical groove of the transmission body. In the event of a power outage, radial elastic deformation occurs relative to the transmission screw, enabling the pedal body to retract in the length direction relative to the transmission screw. To effectively ensure pedal retraction, this invention also strictly constrains the proportional relationship between the radius of the transmission body and the depth of the helical groove of the transmission screw.

[0021] 3. This utility model provides an alternative solution to the problem that the pedal body can retract independently relative to the transmission screw. Specifically, the pedal two is subjected to an external force, which drives the pusher to move inward relative to the pedal one and acts on the moving body to actively disengage from the helical groove of the transmission screw, thereby completing the retraction of the pedal body. After retraction, the force is released on the pedal two, and the moving body can re-fit with the helical groove on the surface of the transmission screw under the action of the elastic component, and re-establish the transmission engagement. Attached Figure Description

[0022] Figure 1 A schematic diagram of the pedal telescopic transmission structure;

[0023] Figure 2 Top view of the pedal telescopic transmission structure (equipped with a guide frame);

[0024] Figure 3 This is a vertical cross-sectional view of the pedal telescopic transmission structure (extended state);

[0025] Figure 4 This is a vertical cross-sectional view of the pedal telescopic transmission structure (in the retracted state);

[0026] Figure 5 Here are schematic diagrams of pedal one and pedal two;

[0027] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0028] Figure 7 A structural diagram of an electric luggage case (inwardly retracted state) that utilizes this transmission structure;

[0029] Figure 8 This is a structural diagram of an electric luggage case (extended state) that uses this transmission structure.

[0030] In the picture:

[0031] 10. Drive screw; 20. Pedal body; 201. Pedal one; 202. Pedal two; 203. Moving body; 204. Inner extrusion component; 205. Elastic component; 206. Insertion port; 207. Pushing component; 21. Mounting groove; 22. Transmission body; 23. Elastic body; 24. Set screw; 25. Guide body; 26. Restricting body; 30. Drive element. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Example 1

[0035] like Figure 1 As shown, a pedal extension and retraction transmission structure includes a transmission screw 10 and a pedal body 20 fitted on the outside of the transmission screw 10. A transmission component is provided on the pedal body 20, and the pedal body 20 forms a transmission engagement with the transmission screw 10 through the transmission component.

[0036] The pedal body 20 is retracted separately from the transmission screw 10 via the transmission component.

[0037] The pedal body 20 has a through blind hole arranged along its own length in the middle. The transmission screw 10 is installed in the through blind hole. After the transmission screw 10 is installed in the through blind hole, the transmission component (its own elastic deformation ability) is used to form a transmission engagement between the transmission screw 10 and the pedal body 20. The forward and reverse rotation of the transmission screw 10 drives the pedal body 20 to complete the extension and retraction action.

[0038] One implementation plan is as follows:

[0039] The transmission component includes a mounting groove 21 disposed on the side of the pedal body 20. A transmission body 22, an elastic body 23 and a set screw 24 are disposed in the mounting groove 21. The set screw 24 presses the transmission body 22 through the elastic body 23. The transmission body 22 is adapted to the spiral groove of the transmission screw 10.

[0040] The side of the transmission body 22 facing the transmission screw 10 is an arc surface or a spherical surface.

[0041] In order to enable independent retraction, especially when the power element of the transmission screw 10 is underpowered, an axial force is applied to the pedal body 20. Since the depth of the spiral groove of the transmission screw 10 is relatively shallow, when the force overcomes the force of the elastic body 23 to keep the transmission body 22 in the spiral groove, the elastic body 23 is pushed out of the spiral groove by the transmission body 22, and the transmission cooperation between the two is released. Thus, the pedal body 20 can perform an independent retraction action relative to the transmission screw 10. Furthermore, the initial pressure of the elastic body 23 on the transmission body 22 can be adjusted by the set screw 24, thereby appropriately adjusting the preload to facilitate the retraction operation of the pedal body 20.

[0042] Another implementation plan is as follows:

[0043] like Figure 5 and Figure 6 As shown, the pedal body 20 includes pedal one 201 and pedal two 202. Pedal one 201 and pedal two 202 are slidably engaged. Specifically, pedal two 202 is fitted on the outside of pedal one 201. Pedal body two 202 is provided with a guide groove arranged along the length direction. A constraint body is installed in the guide groove and the constraint body is fixed on pedal body one 201.

[0044] The transmission component includes a slot provided on the side of the pedal 201, a movable body 203 slidingly fitted in the slot, an inner extruder 204 installed at the slot, an elastic member 205 installed between the inner extruder 204 and the movable body 203, and one end of the movable body 203 facing away from the inner extruder 204 fitted in a spiral groove on the surface of the transmission screw 10.

[0045] A pusher 207 is installed on pedal 202, and an insertion port 206 is provided on pedal 1 for the pusher to enter. The insertion port 206 is connected to the slot, and the end of the pusher 207 away from pedal 202 extends into the insertion port.

[0046] The movable body 203 is provided with a pressure-bearing part on the side near the pusher 207, and the pusher 207 is provided with a pusher part on the side near the movable body 203. The pusher part and the pressure-bearing part are positioned correspondingly and adapted to each other.

[0047] To enable independent retraction, especially when the power element of the transmission screw 10 is under power, an axial force is applied to pedal 202, and the entire pedal is quickly pushed inward. Pedal 202 can be pushed by the pusher 207 against the moving body 203. After being pushed, the moving body 203 moves outward relative to the transmission screw 10, and the spiral groove on the surface of the moving body 203 and the transmission screw 10 separates. At the same time, pedal 1 201 and pedal 2 202 move inward together. When pedal 202 is fully retracted into the housing structure, it is held for a certain period of time. Then, the moving body 203 is reset under the action of the elastic element 205. At the same time, pedal 1 201 moves inward a certain distance relative to pedal 2 202, and will re-establish a transmission engagement with the transmission screw 10.

[0048] Example 2

[0049] In the first embodiment, as Figures 2 to 4 As shown, a guide body 25 is installed on the outside of the pedal body 20. The guide body 25 is arranged along the length direction of the transmission screw 10, and the pedal body 20 extends and retracts along the length direction of the guide body 25.

[0050] The pedal body 20 is provided with a limiting body 26, which is located in the area between two sets of guide bodies 25.

[0051] A guide body 25 is independently installed on the outside of the pedal body 20 to constrain the pedal body 20 to run along the length direction of the transmission screw 10 and prevent relative rotation. This ensures that the pedal body 20 can reciprocate along the length direction of the transmission screw 10. The extension length of the pedal body 20 can be controlled by the limiting body 26. The extension length of the pedal body 20 is 6-12cm.

[0052] In the above-mentioned pedal transmission structure, the transmission components are arranged in two sets, which are located on both sides of the transmission screw 10. The transmission body 22 or moving body 23 of the two sets of transmission components are distributed on both sides of the transmission screw 10 and can be adapted to the spiral groove on its surface to keep the transmission screw 10 rotating and prevent jamming.

[0053] The transmission screw 10 and the pedal body 20 are symmetrically distributed in two sets. The driving element 30 (motor and commutator assembly structure or dual-axis motor) of the transmission screw 10 is arranged between the two transmission screws 10 to drive the transmission screw 10 to run.

[0054] The cross-section of the pedal body 20 is circular, square, or elliptical.

[0055] like Figures 7 to 8As shown, most luggage compartment pedals are designed with pedals on both sides. The advantages of the transmission design in this case include the fact that the lengths of the pedals when retracted cannot be completely uniform, and the extension of the pedals on both sides cannot be uniform due to the joint drive of the drive element 30. The transmission structure in this case can ensure that after one pedal extends to its full position, the transmission element will undergo radial elastic deformation relative to the drive screw 10, without affecting the continued extension of the other pedal. This case can achieve uniform extension length of the pedals on both sides by controlling the running time of the drive element 30 (provided that the speed is set, which is a mature existing control technology), collecting the final position current (using the current signal after the pedals on both sides are in position to complete the control, which is a mature existing control technology), or setting a position sensor (relying on the position signal of the final position of the pedals on both sides to complete the control, which is a mature existing control technology).

[0056] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A pedal extension / retraction transmission structure, characterized in that, It includes a transmission screw (10) and a pedal body (20) fitted on the outside of the transmission screw (10). The pedal body (20) is provided with transmission components, and the pedal body (20) and the transmission screw (10) form a transmission connection through the transmission components. The pedal body (20) retracts separately from the transmission screw (10) via the transmission component.

2. The pedal extension / retraction transmission structure according to claim 1, characterized in that, The transmission component includes a mounting groove (21) arranged on the side of the pedal body (20). The mounting groove (21) is provided with a transmission body (22), an elastic body (23) and a set screw (24). The set screw (24) squeezes the transmission body (22) through the elastic body (23). The transmission body (22) is adapted to the spiral groove of the transmission screw (10).

3. The pedal extension / retraction transmission structure according to claim 2, characterized in that, The side of the transmission body (22) facing the transmission screw (10) is an arc surface or a spherical surface.

4. The pedal extension / retraction transmission structure according to claim 1, characterized in that, The pedal body (20) includes pedal one (201) and pedal two (202), and pedal one (201) and pedal two (202) are in sliding engagement; The transmission component includes a slot provided on the side of the pedal (201), a movable body (203) slidingly fitted in the slot, an inner extruder (204) installed at the slot, an elastic element (205) installed between the inner extruder (204) and the movable body (203), and one end of the movable body (203) facing away from the inner extruder (204) fitting in a spiral groove on the surface of the transmission screw (10); A pusher (207) is installed on pedal two (202), and an insertion port (206) is provided on pedal one (201) for the pusher (207) to enter. The insertion port (206) is connected to the slot, and the end of the pusher (207) away from pedal two (202) extends into the insertion port.

5. The pedal extension / retraction transmission structure according to claim 4, characterized in that, The movable body (203) has a pressure-bearing part on the side near the pusher (207), and the pusher (207) has a pusher part on the side near the movable body (203). The pusher part and the pressure-bearing part are in corresponding positions and are adapted to each other.

6. The pedal extension and retraction transmission structure according to claim 1, characterized in that, A guide body (25) is installed on the outside of the pedal body (20). The guide body (25) is arranged along the length direction of the transmission screw (10), and the pedal body (20) extends and retracts along the length direction of the guide body (25).

7. The pedal extension / retraction transmission structure according to claim 6, characterized in that, The pedal body (20) is provided with a limiting body (26), which is located in the area between two sets of guide bodies (25).

8. The pedal extension and retraction transmission structure according to claim 1, characterized in that, The transmission components are arranged in two sets, which are located on both sides of the transmission screw (10).

9. The pedal extension / retraction transmission structure according to claim 1, characterized in that, The transmission screw (10) and pedal body (20) are symmetrically distributed in two sets.

10. The pedal extension and retraction transmission structure according to claim 1, characterized in that, The cross-section of the pedal body (20) is circular, square or elliptical.

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