Scooter seat folding structure

Abstract

The invention relates to a scooter seat folding structure which comprises a front frame, connecting parts which are arranged in a mirror image mode and bent towards the upper portion of the front frame are arranged on the two sides of the front frame, and the top ends of the connecting parts are connected with supporting rods capable of turning over towards the front frame. A seat plate rotationally connected with the supporting rods is arranged between the two supporting rods and corresponds to the upper portion of the front frame, two movable pins which are arranged in a mirror image mode and can move towards the supporting rods on the two sides in a reciprocating mode are arranged at the bottom of the side, connected with the supporting rods, of the seat plate, and first positioning holes for the movable pins to be inserted in are formed in the supporting rods. A transmission rod is arranged in the supporting rod, one end of the transmission rod is rotationally connected with the connecting part, and the other end of the transmission rod is rotationally connected with the base plate and can move around the rotating center of the base plate. The scooter seat has the advantages that the structure is simple, seat folding operation is convenient, the bearing burden of a scooter is reduced, the cruising ability of the scooter is higher, carrying is more labor-saving and convenient, and the like.

Description

Technical Field

[0001] The present invention relates to a folding structure for a seat of a scooter, belonging to the technical field of scooters. Background Art

[0002] Scooters are means of transportation and auxiliary tools for the purpose of getting around. They have been widely used in modern society. Existing scooters are small in size and low in power, and are relatively safe and convenient to use with low usage requirements. In order to facilitate storage and reduce space, current scooters usually have a certain folding function.

[0003] In a Chinese patent application with the publication number CN108177718A, a folding scooter is disclosed, which includes a main frame. A seat is provided on the upper side of the main frame. The seat is supported on the upper side of the main frame through a first link mechanism. The first link mechanism includes a plurality of first links and a plurality of second links. Each first link is hinged to a second link to form an X-shaped structure. The lower ends of the first links are all hinged to the main frame. The upper ends of the first links are all slidably fixed to the seat. The upper ends of the second links are all hinged and fixed to the seat. The lower ends of the second links are fixed to sliders. The main frame is provided with a plurality of guide rails arranged along the front-rear direction of the scooter. The number of the guide rails is the same as the number of the second links. The sliders are slidably fitted in the guide rails. The sliders are connected by a cross tube. A safety mechanism is provided on the cross tube.

[0004] Scooters usually have a small load-bearing capacity and low power. The seat structure of the above folding scooter is complex and requires a large number of components, resulting in an increase in the self-weight of the scooter. Adding the weight of the human body increases the burden and power consumption of the scooter, increases the production cost, reduces the endurance, and increases the difficulty of handling after folding. Summary of the Invention

[0005] The purpose of the present invention is to provide a folding structure for a seat of a scooter, which solves the problems existing in the prior art, such as complex structure, increased self-weight and burden, and reduced endurance.

[0006] The above technical object of the present invention is mainly solved by the following technical solutions: A folding structure for a mobility scooter seat, including a front frame. On both sides of the front frame, there are connecting parts that are mirror - image to each other and bend upward above the front frame. The top of the connecting part is connected with a support rod that can be flipped forward above the front frame. Between the two support rods, corresponding to the upper part of the front frame, there is a seat plate rotatably connected to the support rod. At the bottom of one side of the seat plate connected to the support rod, there are two mirror - image - set movable pins that can reciprocally move towards the two side support rods respectively. On the support rod, there is a first positioning hole for the movable pin to insert. Inside the support rod, there is a transmission rod. One end of the transmission rod is rotatably connected to the connecting part, and the other end of the transmission rod is rotatably connected to the seat plate and can move around the rotation center of the seat plate; the above - mentioned support rod can drive the seat to flip forward at the connecting part of the front frame to realize the folding of the whole seat, and the movable pin can cooperate with the first positioning hole to position the seat plate, so that the seat plate cannot flip upward. When the seat plate cannot flip upward, the transmission rod and the support rod cannot rotate either. Thus, through the positioning of the movable pin, the limiting of the seat plate and the support rod is realized, so that the support rod maintains the supporting effect on the seat plate, and the seat plate can maintain a horizontal state for easy sitting. At the same time, when the movable pin leaves the first positioning hole, the seat plate can flip upward. At the same time, the transmission rod rotates synchronously with the flipping of the seat plate, and the support rod rotates synchronously with the transmission rod, making the support rod, the transmission rod and the seat plate rotate synchronously and approach the front frame. The above structure is simple, the seat folding operation is convenient, the load - bearing burden of the mobility scooter is reduced, the endurance of the mobility scooter is stronger, and the handling is more labor - saving and convenient.

[0007] Preferably, one end of the transmission rod connected to the seat plate is rotatably connected to the seat plate through a connecting piece. On the connecting piece, there is an extension part that bends towards the seat plate. Inside the extension part, there is a convex column extending towards the seat plate. On the seat plate, there is a groove that cooperates with the convex column; the setting of the connecting piece and the extension part on the above - mentioned transmission rod increases the barrier between the seat plate and the support rod when the seat plate is in a horizontal state for the user to sit, protects the seat and the support rod, and reduces wear. The cooperative setting of the convex column and the groove strengthens the stability between the seat plate and the support rod and avoids the seat plate from shaking.

[0008] Preferably, an arc - shaped guide groove is arranged inside the support rod. The center of the arc of the arc - shaped guide groove is consistent with the rotation center of the seat plate. The connecting piece is located in the arc - shaped guide groove and can move along the arc - shaped track of the arc - shaped guide groove; the setting of the above - mentioned arc - shaped guide groove can guide and limit the movement of the connecting piece when the seat plate rotates, so that the seat plate and the support rod can stably rotate through the transmission of the transmission rod, ensuring the smoothness and stability when the seat plate and the support rod are folded.

[0009] Preferably, a second positioning hole is provided on one side of the support rod close to the side of the seat plate, and the positions of the first positioning hole and the second positioning hole are both located on the rotation trajectory of the seat plate; the setting of the second positioning hole enables the movable pin to be inserted into the second positioning hole when the seat plate is turned upward for folding, positioning the seat plate and restricting the flipping of the seat plate, so that the seat plate remains stable when the seat is folded, avoiding swinging, and can restrict the folding states of the transmission rod and the support rod, preventing the transmission rod and the support rod from easily disengaging from the folded state.

[0010] Preferably, positioning parts for the movable pin to pass through are provided on both sides of the bottom of the seat plate. A guiding groove is provided in the positioning part along the axial direction of the movable pin. A convex part abutting against the inner wall of the guiding groove is provided at the outer end of the movable pin, and a telescopic spring is provided corresponding to the circumferential side of the movable pin in the guiding groove; the setting of the positioning part and the guiding groove facilitates guiding and limiting the axial movement of the movable pin, ensuring the stability of the axial movement of the movable pin and preventing the radial deviation of the movable pin under force. The setting of the convex part and the telescopic spring enables the movable pin to automatically protrude outward under the action of the telescopic spring and enter the first positioning hole or the second positioning hole through the convex part to achieve connection.

[0011] Preferably, a push plate movable in the front-back direction of the seat plate is provided between the two positioning parts. Driving blocks for driving the axial movement of the movable pin are provided on both sides of the push plate. A limiting cover connected to the seat plate is sleeved on the driving block, and a limiting groove for the driving block to move is provided between the limiting cover and the seat plate; the setting of the push plate facilitates driving the push plate to move when folding is required. The push plate can drive the movable pin to leave the first positioning hole or the second positioning hole, so as to facilitate folding or canceling the folded state of the seat. The setting of the limiting cover and the limiting groove can protect the components on the driving block and limit the moving distance and direction of the push plate through the limiting groove, ensuring the stability of the push plate during movement.

[0012] Preferably, a convex block is provided on the outer side of the driving block, and a return spring is provided on the convex block along the moving direction of the push plate. The end of the return spring is connected to a protrusion provided at the bottom of the seat plate; the setting of the convex block facilitates cooperation with the protrusion to fix the return spring, enabling the push plate to automatically reset after moving, facilitating subsequent operations, realizing the continuity of the movement of the push plate, and thus realizing the repeatability of the seat folding function.

[0013] Preferably, an inclined groove is provided on the end face of the driving block and is inclined towards the inner end of the movable pin. A roller is provided at the inner end of the movable pin and extends into the inclined groove and abuts against the side wall of the inclined groove. A limiting portion that abuts against the side wall of the movable pin is provided inside the limiting cover. The provision of the inclined groove enables the movement of the push plate to drive the roller at the inner end of the movable pin to move along the inclined groove through the inclined groove of the driving block, thereby driving the outer ends of the two movable pins to move axially synchronously under the limitation of the limiting portion and the positioning portion, ensuring the stability of the movement of the movable pin and realizing the synchronous control of the flipping of both sides of the seat plate.

[0014] Therefore, the present invention has the characteristics of simple structure, convenient folding operation of the seat, reducing the load-bearing burden of the mobility scooter, making the mobility scooter have a stronger endurance ability, and being more labor-saving and convenient to carry. Brief Description of the Drawings

[0015] Figure 1 is a three-dimensional structure diagram of the present invention.

[0016] Figure 2 is Figure 1 a schematic structural diagram when the seat plate and the support rod in

[0017] Figure 3 is Figure 2 a partial structural cross-sectional view of the support rod in

[0018] Figure 4 is Figure 1 a schematic structural diagram of the seat plate in

[0019] Figure 5 is Figure 4 a partial structural cross-sectional view of the seat plate in Detailed Description of the Embodiment

[0020] The technical solution of the present invention will be further specifically described below through embodiments in combination with the drawings.

[0021] As Figures 1-3 shown, a folding structure of a mobility scooter seat includes a front frame 1. On both sides of the front frame 1, there are connecting portions 11 that are mirror images of each other and bend upward towards the front frame 1. The top ends of the connecting portions 11 are connected with support rods 2 that can be flipped towards the front frame 1. A seat plate 3 that is rotatably connected to the support rods 2 is provided corresponding to the upper part of the front frame 1 between the two support rods 2. At the bottom of one side of the seat plate 3 connected to the support rods 2, there are two mirror-image movable pins 31 that can reciprocate towards the two support rods 2 respectively. First positioning holes 21 for inserting the movable pins 31 are provided on the support rods 2. A transmission rod 22 is provided inside the support rods 2. One end of the transmission rod 22 is rotatably connected to the connecting portion 11, and the other end of the transmission rod 22 is rotatably connected to the seat plate 3 and can move around the rotation center of the seat plate 3.

[0022] The above-mentioned front frame, support rod and seat board are all made of carbon fiber material, which not only ensures hardness but also makes the vehicle body lighter. The connecting part of the front frame extends to the rear side of the vehicle body and bends upward to connect the support rod. The support rod extends upward until it connects to the seat back. The seat board is connected to the middle section of the support rod and cooperates with the seat back to facilitate the user to sit. The seat board is arranged in the direction of the front frame on the front side of the vehicle body. When in normal use, the seat board is in a horizontal state relative to the front frame, and the movable pins on both sides are snapped into the first positioning holes inside the support rods on both sides. The support rod and the transmission rod both remain upright. When folding is required, control the movable pins to leave the first positioning holes. At this time, the seat board flips up, and then it can be flipped and folded forward together with the transmission rod and the support rod towards the front frame.

[0023] As Figures 2-3 shown, one end of the transmission rod 22 connected to the seat board 3 is rotatably connected to the seat board 3 through a connecting piece 221. The connecting piece 221 is provided with an extension part 222 bent towards the seat board 3. The inner side of the extension part 222 is provided with a convex column 223 extending towards the seat board 3. The seat board 3 is provided with a groove 32 cooperating with the convex column 223. The inner side of the support rod 2 is provided with an arc-shaped guide groove 23. The center of the arc of the arc-shaped guide groove 23 is consistent with the rotation center of the seat board 3. The connecting piece 221 is located in the arc-shaped guide groove 23 and can move along the arc track of the arc-shaped guide groove 23. One side of the support rod 2 close to the side of the seat board 3 is provided with a second positioning hole 24. The positions of the first positioning hole 21 and the second positioning hole 24 are both located on the rotation track of the seat board 3.

[0024] When the above-mentioned seat board is in a horizontal state, the side of the seat board abuts against the protrusion on the side wall of the support rod, so that the seat board remains in a horizontal state. A connecting piece is arranged between the seat board and the protrusion of the support rod. The extension part of the connecting piece is located between the protrusion of the support rod and the side of the seat board, reducing the wear caused by direct contact between the seat and the support rod. And both the connecting piece and the extension part are plastic products. The connecting piece is fixed on the transmission rod, and the side of the seat board, the connecting piece and the transmission rod are always rotatably connected. When the side of the seat board is connected to the connecting piece, the convex column of the extension part is always snapped into the groove. When the seat board is flipped upward, the movable pins on both sides of the seat board leave the first positioning holes. During the rotation of the seat board, the side of the seat board drives the end of the transmission rod to move in the arc-shaped guide groove through the connecting piece until it moves to the other end of the arc-shaped guide groove, and the movable pin is snapped into the second positioning hole, and the support rod and the transmission rod are flipped and folded, and the seat board is flipped upward to complete the folding.

[0025] As Figures 4-5As shown in the figure, positioning parts 33 for allowing the movable pins 31 to pass through are provided on both sides of the bottom of the seat plate 3. Guide grooves 331 are provided in the positioning parts 33 along the axial direction of the movable pins 31. Convex parts 311 in contact with the inner walls of the guide grooves 331 are provided at the outer ends of the movable pins 31. Telescopic springs 332 are provided corresponding to the circumferences of the movable pins 31 in the guide grooves 331. A push plate 34 capable of moving in the front-back direction of the seat plate 3 is provided between the two positioning parts 33. Driving blocks 35 for driving the axial movement of the movable pins 31 are provided on both sides of the push plate 34. A limiting cover 36 connected to the seat plate 3 is covered on the driving blocks 35. A limiting groove 361 for allowing the driving blocks 35 to move is provided between the limiting cover 36 and the seat plate 3. Convex blocks 351 are provided on the outer sides of the driving blocks 35. Return springs 352 are provided on the convex blocks 351 along the moving direction of the push plate 34. The ends of the return springs 352 are connected to protrusions 37 provided at the bottom of the seat plate 3. Oblique grooves 353 inclined towards the inner ends of the movable pins 31 are provided on the end faces of the driving blocks 35. Roller shafts 312 extending into the oblique grooves 353 and in contact with the side walls of the oblique grooves 353 are provided at the inner ends of the movable pins 31. Limiting parts 362 in contact with the side walls of the movable pins 31 are provided inside the limiting cover 36.

[0026] The above-mentioned movable pins pass through the positioning parts and extend into the limiting cover. The convex parts at the outer ends of the movable pins can extend into the first positioning hole or the second positioning hole. The inner ends of the movable pins are located inside the limiting parts of the limiting cover and are connected with the roller shafts located in the oblique grooves. The roller shafts are in contact with the side walls of the oblique grooves. When the outer ends of the movable pins are located in the first positioning hole or the second positioning hole, the inner ends of the movable pins are located at the openings of the oblique grooves. The telescopic springs act to push the convex parts of the movable pins so that the outer ends of the movable pins are located in the first positioning hole or the second positioning hole, and the return springs are in a relaxed state.

[0027] When it is necessary to control the movable pins to leave the first positioning hole or the second positioning hole, pull the push plate. The push plate moves along the limiting groove on the limiting cover, pushing and driving the driving blocks to move synchronously, and the return springs start to continuously contract. When the driving blocks move, the roller shafts at the inner ends of the movable pins are driven to move through the oblique grooves, so that the inner sections of the movable pins move along the oblique grooves. The movable pins are limited by the guide grooves and the limiting parts and move axially towards the push plate. At this time, the telescopic springs contract, and the convex parts at the outer ends of the movable pins move into the guide grooves, and the movable pins thus leave the first positioning hole or the second positioning hole. After adjusting the seat state, release the push plate. The push plate returns to its original position under the action of the return springs. At the same time, the convex parts of the movable pins move out of the guide grooves along the oblique grooves under the action of the telescopic springs until they enter the first positioning hole and the second positioning hole.

Claims

1. A folding structure for a mobility scooter seat, Characterized in that: It includes a front frame (1), and on both sides of the front frame (1), there are connecting parts (11) that are mirror - set with each other and bend upward towards the front frame (1). The top ends of the connecting parts (11) are connected with support rods (2) that can be flipped forward towards the front frame (1). Corresponding to the upper part of the front frame (1) between the two support rods (2), there is a seat board (3) rotatably connected to the support rods (2). On the bottom of the side of the seat board (3) connected to the support rods (2), there are two mirror - set movable pins (31) that can reciprocally move towards the two side support rods (2) respectively. On the support rods (2), there are first positioning holes (21) for the movable pins (31) to insert into. Inside the support rods (2), there is a transmission rod (22). One end of the transmission rod (22) is rotatably connected to the connecting part (11), and the other end of the transmission rod (22) is rotatably connected to the seat board (3) and can move around the rotation center of the seat board (3).

2. The folding structure for a mobility scooter seat according to claim 1, Characterized in that: One end of the transmission rod (22) connected to the seat board (3) is rotatably connected to the seat board (3) through a connecting piece (221). On the connecting piece (221), there is an extension part (222) that bends towards the seat board (3). Inside the extension part (222), there is a convex column (223) extending towards the seat board (3). On the seat board (3), there is a groove (32) that cooperates with the convex column (223).

3. The folding structure for a mobility scooter seat according to claim 2, Characterized in that: Inside the support rod (2), there is an arc - shaped guiding groove (23). The center of the arc - shaped guiding groove (23) is consistent with the rotation center of the seat board (3). The connecting piece (221) is located inside the arc - shaped guiding groove (23) and can move along the arc - shaped track of the arc - shaped guiding groove (23).

4. The folding structure for a mobility scooter seat according to claim 1, Characterized in that: On the side of the support rod (2) close to the side of the seat board (3), there is a second positioning hole (24). The positions of the first positioning hole (21) and the second positioning hole (24) are both on the rotation track of the seat board (3).

5. The folding structure for a mobility scooter seat according to claim 1, Characterized in that: On both sides of the bottom of the seat board (3), there are positioning parts (33) for the movable pins (31) to pass through. Inside the positioning parts (33), there are guiding grooves (331) arranged along the axial direction of the movable pins (31). On the outer end of the movable pins (31), there are convex parts (311) that abut against the inner wall of the guiding grooves (331). Inside the guiding grooves (331), there are telescopic springs (332) corresponding to the circumferences of the movable pins (31).

6. The folding structure for a mobility scooter seat according to claim 5, Characterized in that: A push plate (34) movable in the front-rear direction of the seat plate (3) is provided between the two positioning portions (33); drive blocks (35) for driving the movable pin (31) to move axially are provided on both sides of the push plate (34); a limit cover (36) connected to the seat plate (3) is provided on the upper cover of the drive block (35); and a limit groove (361) for allowing the drive block (35) to move is provided between the limit cover (36) and the seat plate (3).

7. The folding structure of the mobility scooter seat according to claim 6, Features: A protrusion (351) is provided on the outer side of the driving block (35), and a return spring (352) is provided on the protrusion (351) along the moving direction of the push plate (34), and an end of the return spring (352) is connected to a protrusion (37) provided at the bottom of the seat plate (3).

8. The folding structure of the mobility scooter seat according to claim 6, Features: An oblique groove (353) inclined toward the inner end of the movable pin (31) is provided on the end surface of the driving block (35); a roller (312) extending into the oblique groove (353) and abutting against the side wall of the oblique groove (353) is provided at the inner end of the movable pin (31); and a limiting portion (362) abutting against the side wall of the movable pin (31) is provided inside the limiting cover (36).

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