A flip limit lock mechanism

Abstract

The utility model relates to a scooter, concretely relates to a turnover limiting locking mechanism for a scooter, a turnover limiting locking mechanism, including first fixed part and second fixed part, the first fixed part and second fixed part form the activity space for the turnover spare activity between, one end of the turnover spare is fixed end and rotates the fixed with first fixed part, the other end of the turnover spare is movable end, the movable end swings with fixed end as center to be close to or away from second fixed part, be equipped with the guide column and extension part that extend in the activity space at second fixed part, be equipped with the guide groove on the extension part, the guide column is matched with the limit block and compression spring, one end of limit block is slidably matched in the guide groove, the extension part is rotatably fixed with the unlocking lever, the utility model has the advantages of convenient operation, locking is reliable, long service life.

Description

Technical Field

[0001] This utility model relates to a mobility scooter, specifically to a flipping limit locking mechanism used in a mobility scooter. Background Technology

[0002] For ease of use, the handlebars, seat, and even the entire body of the mobility scooter can be folded. The battery compartment cover, where the battery box is located, can also be flipped open. Therefore, the mobility scooter uses some locking mechanisms to restrict folding or opening of the cover.

[0003] Some existing flipping limit locking mechanisms can be directly used in mobility vehicles. For example, the flipping structure disclosed in patents with publication numbers CN223133303U and CN223001416U can be used to lock the flipping component by setting a limit hole on the side wall of the flipping component and then setting a limit post that works with a spring at the fixed part. The end of the limit post extends into the limit hole of the flipping component to restrict the flipping component from flipping, thereby achieving locking.

[0004] However, the flipping component will continuously apply pressure to the limit, and the limit post is slidably fitted inside the sleeve. There is a gap between the limit post and the sleeve, and the end of the limit post needs to extend outside the sleeve. After prolonged use, the limit post will bend, and the end of the limit post used to insert into the side hole of the flipping component will have a large radial offset. As a result, it is difficult for the end of the limit post to be aligned with the side hole of the flipping component, making it difficult to easily unlock and lock the flipping component. Utility Model Content

[0005] The purpose of this invention is to provide a flip-limit locking mechanism that is more convenient to use, has a better locking effect, and a longer service life.

[0006] To achieve the above objectives, this utility model employs a flipping limiting and locking mechanism, including a first fixed part and a second fixed part. An active space is formed between the first and second fixed parts for the flipping component to move. One end of the flipping component is a fixed end and is rotatably fixed to the first fixed part. The other end of the flipping component is a movable end, which swings around the fixed end to move closer to or away from the second fixed part. The mechanism is characterized by: a guide post and an extension extending into the active space at the second fixed part; a guide groove on the extension; a limiting block and a compression spring fitted onto the guide post; one end of the limiting block slidingly fitting into the guide groove; and an unlocking rod rotatably fixed to the extension. Under the action of the compression spring, the limiting block moves inward into the active space and is positioned on the movement trajectory of the movable end of the flipping component. When the unlocking rod swings and pushes the limiting block to overcome the force of the compression spring and move towards the second fixed part, there is no obstruction on the movement trajectory of the movable end of the flipping component.

[0007] Compared to the solutions in the prior art, the moving direction of the limiting block in this invention is different. By placing the limiting block directly on the moving trajectory of the flipping component, it is not necessary to align the limiting block with the hole. Even if the limiting block undergoes some bending deformation after being subjected to the pressure of the flipping component, it will not affect the blocking effect of the limiting block on the flipping component after moving along the guide post. When it is necessary to unlock, simply move the unlocking lever. The unlocking lever swings and applies a pushing force to the limiting block, overcoming the compression spring and pushing the limiting block away from the moving trajectory of the flipping component, thus unlocking the device. This invention only requires moving the unlocking lever for both locking and unlocking, without needing to consider hole alignment, making it more convenient to use.

[0008] Since hole alignment is not required, there is no need to drill holes in the flipping part. Thicker limit blocks can also be selected. The rigidity of the limit blocks far exceeds that of the cantilevered limit posts in the background technology. The limit blocks are less prone to deformation and have a longer service life.

[0009] The guide groove and extension provide dual guidance and radial support. One end of the limiting block slides in the guide groove and is also constrained by the guide post, forming a stable two-point-one-line guiding structure, which can ensure that the movement trajectory of the limiting block will not deviate significantly.

[0010] The positions of the first and second fixing parts can be selected according to actual needs. When this utility model is used for locking and limiting the folding of the seat of a mobility scooter, the flipping part is a connecting rod with both ends hinged to the vehicle body and the seat respectively, and the first and second fixing parts can be one of the parts of the vehicle body and the seat respectively. When this utility model is used for the cover of the battery compartment of a mobility scooter, the flipping part is the cover, and the first and second fixing parts are different parts of the battery compartment shell respectively.

[0011] Preferably, the second fixing part is integrally formed with the guide post and the extension. The core guiding components (guide post and extension) that support the movement of the limiting block are manufactured as a single integral component with the second fixing part. This eliminates the connection gaps and loosening problems caused by separate assembly, significantly improves the overall load-bearing capacity, and can more stably resist the impact force of the flipping parts transmitted by the limiting block. It also ensures the relative positional accuracy between the guide post and the extension, eliminating the need for later adjustments and reducing assembly difficulty and cost.

[0012] Preferably, the second fixing part has two extensions, with a guide post between each pair of extensions. Both ends of the limiting block fit into the guide grooves of the extensions, and the middle part of the limiting block is fitted over the guide post. The flipping component is positioned between the two extensions. This forms a three-point guiding support structure with guide grooves at both ends and a guide post in the middle, avoiding concentrated force at a single point, significantly reducing local stress, and allowing the force borne by the limiting block to be transferred to the extensions and guide post, thus reducing the deformation of the limiting block and extending its service life. Furthermore, the movable end of the flipping component is confined between the two extensions, restricting its own sway space and allowing for more precise engagement with the limiting block.

[0013] Preferably, the surface of the limiting block that contacts the flipping component is an arc surface. The arc surface design allows the limiting block to automatically align itself when it contacts the flipping component, ensuring reliable line or point contact even if slight positional deviations occur due to processing or long-term use.

[0014] Preferably, the second fixing part is provided with two limiting groups arranged side by side. Each limiting group includes at least one guide post and at least one extension. The extension of each limiting part is provided with the unlocking rod, and the front ends of all unlocking rods are synchronously linked through connecting rods. The linkage (flipping part) for seat folding in the mobility scooter is usually provided with one set on each side. The linkages on the left and right sides are locked by a limiting group respectively. The double limiting groups provide double insurance. Even if one set fails due to foreign object jamming or damage, the other set can still maintain the locking function, greatly improving safety.

[0015] Preferably, the limiting block includes a cylinder with a fixing screw at one end. The head width of the fixing screw is greater than the width of the guide groove. The unlocking rod is located outside the extension and is used to contact the head of the fixing screw. The cylinder and fixing screw are standard parts, easy to process and replace, reducing manufacturing costs and maintenance difficulty. At the same time, the outer wall of the cylinder is curved, which facilitates contact with the flipping part.

[0016] Preferably, the unlocking rod has an arc-shaped groove, the extension direction of which is the same as the movement trajectory of the unlocking rod, and the extension portion has a limiting screw that extends into the arc-shaped groove. The arc-shaped groove defines the swing trajectory and extreme position of the unlocking rod, allowing the unlocking rod to move closer to the limiting block and enabling the unlocking rod to unlock with less movement.

[0017] Preferably, the unlocking lever has a forward-extending handle, and the unlocking lever has a V-groove facing the head of the fixing screw at a point off the handle. The extended handle increases the lever arm, allowing the user to unlock with minimal force, making operation easy and effortless. The V-groove automatically centers the head of the fixing screw and increases the contact point, ensuring that the contact point between the unlocking lever and the limit block always remains in the designed position, preventing slippage or misalignment.

[0018] This utility model has the advantages of convenient operation, reliable locking, and long service life. Attached Figure Description

[0019] Figure 1 This is a side view of the folding seat of this utility model when applied to a mobility scooter.

[0020] Figure 2 This is a front view of the first fixing part of this utility model.

[0021] Figure 3 This is an enlarged view of the flip-limit locking mechanism of this utility model. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0023] Depend on Figures 1 to 3 As shown, this embodiment is used for a folding mobility scooter. This embodiment provides a flip-limiting locking mechanism, mainly including a first fixing part 10, a second fixing part 20, a flipping component 30, a limiting block 40, a compression spring 50, and an unlocking rod 60. When the folding seat of the mobility scooter is unfolded, the first fixing part 10 and the second fixing part 20 are arranged vertically opposite each other. In this embodiment, the first fixing part 10 is the scooter body, and the second fixing part 20 is the seat cushion frame. An active space 11 is formed between the first fixing part 10 and the second fixing part 20, allowing the flipping component 30 to swing. In this embodiment, the flipping component 30 is a front connecting rod connected between the scooter body and the seat cushion frame. The two ends of the front connecting rod and the rear connecting rod are hinged to the scooter body and the seat cushion frame, respectively. By allowing the lower end surfaces of the front and rear connecting rods to abut against the upper end surface of the scooter body, excessive rearward movement of the seat is restricted. The flip-limiting locking structure of this embodiment prevents the seat from flipping forward.

[0024] The second fixing part 20 is integrally formed with a downwardly extending guide post 21 and an extension part 22 on the side facing the active space 11. In this embodiment, two identical limiting groups 70 are arranged side by side on the lower side of the second fixing part 20. In this embodiment, there are two front connecting rods and two rear connecting rods, which serve as the flipping member 30. The height position of the rotation axis of the upper end of the front connecting rod is lower than the height position of the rotation axis of the upper end of the rear connecting rod, and the height position of the rotation axis of the lower end of the front connecting rod is lower than the height position of the rotation axis of the lower end of the rear connecting rod.

[0025] Each limiting assembly 70 includes a guide post 21, an extension 22, a limiting block 40, a compression spring 50, and an unlocking rod 60. The guide post 21 is located between two extensions 22, and the ends of the limiting blocks 40 are respectively located in the guide grooves of one extension 22, with the middle of the limiting block 40 sleeved outside the guide post 21. Each limiting assembly 70 has an unlocking rod 60 with a forward-extending handle 63. The two handles 63 are fixedly connected by a connecting rod 71 to form a synchronous linkage structure. The operator only needs to operate either the handle 63 or the connecting rod 71 to simultaneously drive the two limiting blocks 40 to move, achieving simultaneous unlocking on both sides. The extensions 22 are two parallel plate-like structures located on both sides of the guide post 21. Each extension 22 has an elongated guide groove 23, and the extension direction of the guide groove 23 is consistent with the axial direction of the guide post 21.

[0026] The limiting block 40 has a cylindrical structure with fixing screws 41 at both ends. The head diameter of the fixing screws 41 is larger than the width of the guide groove 23. During assembly, the main body of the limiting block 40 is located between the two extensions 22, and the fixing screws 41 at both ends pass through the corresponding guide grooves 23, allowing the limiting block 40 to slide back and forth within the limited range of the guide grooves 23. A through hole is provided in the middle of the limiting block 40, through which the guide post 21 passes to achieve precise positioning and guidance. A compression spring 50 is sleeved on the guide post 21, with one end abutting against the inner wall of the second fixing part 20 and the other end abutting against the limiting block 40, always pushing the limiting block 40 towards the inner side of the movable space 11.

[0027] The unlocking lever 60 is rotatably fixed to the outside of the extension 22. A V-groove 62 is provided at the upper edge of the unlocking lever 60, with its opening facing the head of the fixing screw 41. To prevent the unlocking lever 60 from deviating from the limiting block 40, a horizontally penetrating arc-shaped groove 64 is provided on the unlocking lever 60, with the arc-shaped extension direction of the groove parallel to the movement trajectory of the unlocking lever. A limiting screw (not shown) is provided on the extension 22, with its end extending into the arc-shaped groove 64. When the unlocking lever 60 swings, the limiting screw slides relative to the limiting screw within the arc-shaped groove 64. The limiting effect of the limiting screw at both ends of the arc-shaped groove 64 precisely controls the swing angle range of the unlocking lever 60.

[0028] Without external force, the compression spring 50 pushes the limiting block 40 to its lowest position, at which point the limiting block 40 is located in front of the movement trajectory of the flipping component 30. When the seat is in the unfolded state, the movable end 32 of the flipping component 30 abuts against the arc surface 43 of the limiting block 40.

[0029] Pull the handle 63 of the unlocking lever 60, and the unlocking lever 60 swings upward and presses the fixing screw 41 through the V-groove 62, causing the limiting block 40 to move upward until it is completely disengaged from the movement track of the flipping part 30. At this time, the flipping part 30 can freely flip forward. After the seat is folded, release the handle 63, and the compression spring 50 will automatically reset the limiting block 40 and place the limiting block 40 behind the movement track of the flipping part 30.

[0030] The flip-limit locking mechanism of this embodiment has the advantages of convenient operation, reliable locking, and long service life.

Claims

1. A flipping limiting and locking mechanism, comprising a first fixed part and a second fixed part, wherein a movable space for a flipping member to move is formed between the first fixed part and the second fixed part, one end of the flipping member is a fixed end and is rotatably fixed to the first fixed part, and the other end of the flipping member is a movable end, wherein the movable end swings about the fixed end as a center to move closer to or away from the second fixed part, characterized in that: The second fixed part is provided with a guide post and an extension extending into the movable space. The extension is provided with a guide groove. A limit block and a compression spring are fitted on the guide post. One end of the limit block is slidably fitted into the guide groove. An unlocking rod is rotatably fixed on the extension. The limit block moves into the movable space under the action of the compression spring and is located on the movement trajectory of the movable end of the flipping part. When the unlocking rod swings and pushes the limit block to overcome the force of the compression spring and move towards the second fixed part, there is no obstruction on the movement trajectory of the movable end of the flipping part.

2. The flipping limiting and locking mechanism according to claim 1, characterized in that: The second fixing part is integrally formed with the guide post and the extension.

3. The flipping limit locking mechanism according to claim 1, characterized in that: The second fixing part is provided with two extensions, and a guide post is provided between each pair of extensions. Both ends of the limiting block are fitted into the guide grooves of the extensions, and the middle part of the limiting block is sleeved outside the guide post. The flipping member is located between the two extensions.

4. The flipping limit locking mechanism according to claim 1, characterized in that: The surface of the limiting block that contacts the flipping component is an arc surface.

5. The flipping limit locking mechanism according to claim 1, characterized in that: The second fixing part is provided with two limit groups arranged side by side. Each limit group includes at least one guide post and at least one extension. The extension of each limit part is provided with the unlocking rod. The front ends of all the unlocking rods are linked synchronously through the connecting rod.

6. The flipping limiting and locking mechanism according to claim 1 or 5, characterized in that: The limiting block includes a cylinder with a fixing screw at the end of the cylinder. The width of the fixing screw head is greater than the width of the guide groove. The unlocking rod is located outside the extension and is used to contact the fixing screw head.

7. The flipping limiting and locking mechanism according to claim 1 or 5, characterized in that: The unlocking rod is provided with an arc-shaped groove, the extension direction of which is the same as the movement trajectory of the unlocking rod, and the extension portion has a limiting screw that extends into the arc-shaped groove.

8. The flipping limit locking mechanism according to claim 6, characterized in that: The unlocking lever has a handle that extends forward, and the unlocking lever has a V-groove that faces the head of the fixing screw at a position off the handle.

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