Foldable double-vertical-rod type scooter front frame

Abstract

The utility model discloses a foldable double-vertical-rod type front frame of a scooter. The foldable double-vertical-rod type front frame comprises an upper frame, a lower frame, an upper bridging seat, a lower bridging seat and a locking block, the lower end of the first vertical branch rod is fastened and inserted into the upper sleeving part of the upper bridging seat, and the upper end of the second vertical branch rod is fastened and inserted into the lower sleeving part of the lower bridging seat; a sinking groove is formed in the upper end in the lower sleeving part, and an elastic ring is arranged in the sinking groove; the rear sides of the upper bridging seat and the lower bridging seat are connected through a rotating shaft, so that the upper bridging seat can be folded backwards relative to the lower bridging seat; in an unfolded state, the upper convex part of the lower bridging seat is embedded into the embedding groove of the upper bridging seat, and the first transverse groove and the second transverse groove are mutually and transversely communicated to form a locking groove; the elastic ring has a mute effect; the locking block is clamped in the locking groove to limit the front frame from being turned over, and the locking block is separated from the locking groove to enter an unlocking state; according to the arrangement, the vehicle body is more stable before being unfolded, locking and unlocking can be completed only by operating one locking block, operation is convenient, labor is saved, and safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a scooter, in particular to a foldable double-pole type scooter front frame. Background Art

[0002] With the rise of outdoor off-road sports, off-road electric scooters with a more solid double-pole front frame have become a new favorite. Patents such as CN108407957A, CN209650451U, and CN216943413U all disclose such double-pole front frames, which include a handlebar and two parallel poles spaced apart from each other, with the upper end of each pole connected to the lower part of the handlebar, and each pole extending from the handlebar to both sides of the front wheel.

[0003] In order to facilitate the storage of this type of electric scooter with a double-pole front frame, electric scooter manufacturers have designed different folding mechanisms.

[0004] In the patent with authorization announcement number CN212950986U, the front frame is folded as a whole toward the pedal assembly, the front end of the pedal unit is hinged on the front body unit, the pedal unit is movably provided with a control component that can be switched between a first position and a second position, the control component is movably provided with a locking pin, and the front body unit is provided with a locking hole; the locking pin on the control component falls into the locking hole, and the control component is switched to the first position to solidify the unfolded state of the front body unit and the pedal unit; the control component is switched to the second position, and the locking pin is pulled out of the locking hole to put the front body unit and the pedal unit in a free rotation state.

[0005] The above-mentioned folding structure is relatively complicated, and since the overall folding of the front frame changes the standing shape of the front wheel, the electric scooter falls over during the folding process, and the folding operation is relatively laborious.

[0006] In the patent with authorization announcement number CN216916163U, the double-upright front frame folding mechanism includes two vertical poles spaced apart from each other and a locking device, each vertical pole includes a lower fixed rod and an upper movable rod, the lower fixed rod and the upper movable rod are hinged up and down; the hinge positions of the two vertical poles are at the same height, and the folding directions of the two upper movable rods are consistent; the locking device constrains and locks the hinge positions of the two vertical poles so that the lower fixed rod and the upper movable rod on each vertical pole are on the same axis; when the locking device is unlocked, the hinge positions of the two vertical poles are released, and the two upper movable rods can be folded in the same direction.

[0007] In the patent with the authorization announcement number CN209650451U, the double-pole front frame folding mechanism includes a seat, a lower flip rod, an upper flip rod, a fixing mechanism and a force distribution component. In the utility model, the upper flip rod and the lower flip rod are fastened at their joints by the fixing mechanism to limit the upper flip rod from flipping relative to the lower flip rod, thereby unfolding the electric scooter. When the electric scooter needs to be folded, the fixing mechanism only needs to be unfolded to fold the upper flip rod relative to the lower flip rod.

[0008] In the above two methods, multiple operations are required to release the constraints of the two poles respectively to achieve the simultaneous collapse of the two poles, which is inconvenient. In addition, the folding constraints of the two poles are independent of each other, and the stability after unfolding is poor, which easily leads to the problem of unilateral loosening of the restraint, resulting in a decrease in the strength of the vehicle body. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide a foldable double-pole type scooter front frame which is more convenient to fold and has a more stable connection in the unfolded state.

[0010] The technical solution adopted by the utility model to solve the above technical problems is: a foldable double-pole scooter front frame, including an upper frame, a lower frame, an upper bridge seat, a lower bridge seat and a locking block;

[0011] The upper bridge seat includes upper sleeve parts on the left and right sides, an upper locking part on the front side and an upper hinge part on the rear side; the lower bridge seat includes lower sleeve parts on the left and right sides, a lower locking part on the front side and a lower hinge part on the rear side;

[0012] The upper frame comprises a handlebar and a first vertical branch rod which is spaced apart from and parallel to the lower end of the handlebar; the lower end of the first vertical branch rod is fastened and inserted into the upper sleeve portion;

[0013] The lower frame includes a pedal connection seat and a second vertical branch rod connected to both sides of the pedal connection seat; the upper end of the second vertical branch rod is fastened and inserted into the lower sleeve portion;

[0014] The upper hinge part and the lower hinge part are connected via a rotating shaft so that the upper bridge seat can be folded backward relative to the lower bridge seat;

[0015] An embedding groove is provided on the lower side of the upper bridge seat, and lower convex parts are formed on both sides of the embedding groove; an upper convex part adapted to the embedding groove is provided on the upper side of the lower bridge seat, and lower concave parts are formed on both sides of the upper convex part;

[0016] The front side surface of the lower convex portion is provided with a first transverse groove, and the front side surface of the upper convex portion is provided with a second transverse groove;

[0017] In the unfolded state, the upper convex portion is engaged with the embedding groove, and the first transverse groove and the second transverse groove are mutually connected transversely to form a locking groove;

[0018] The locking block matches the locking groove. When the locking block is engaged in the locking groove, the middle portion of the locking block is located in the second transverse groove and the two side portions are located in the first transverse groove to limit the upper bridge seat from folding relative to the lower bridge seat, and the upper frame and the lower frame enter a locked state.

[0019] When the locking block is out of the locking groove, the restriction on the upper bridging seat to fold backward relative to the lower bridging seat is released, and the upper frame and the lower frame enter an unlocked state.

[0020] The preferred technical solution adopted by the utility model to solve the above technical problems is: the bottoms of the first transverse groove and the second transverse groove are flush, and when the locking block is clamped in the locking groove, the inner surface of the locking block is tightly against the bottoms of the first transverse groove and the second transverse groove.

[0021] The preferred technical solution adopted by the utility model to solve the above technical problems is: a sink groove is provided at the upper end of the lower sleeve portion, and an elastic ring is provided in the sink groove; in the unfolded state, the elastic ring is squeezed by the first vertical branch rod and the second vertical branch rod.

[0022] The preferred technical solution adopted by the utility model to solve the above technical problems is: the lower convex part protrudes from the lower end surface of the upper sleeve part, and the lower concave part is recessed in the upper end surface of the lower sleeve part. In the unfolded state, the lower convex part and the lower concave part are embedded.

[0023] The preferred technical solution adopted by the utility model to solve the above technical problems is: the locking block is controlled by the adjusting member to enter and exit the locking groove;

[0024] The adjusting member comprises a screwing portion and a bolt portion, the upper convex portion is provided with a threaded hole extending forward and backward, and the orifice of the threaded hole is located in the second transverse groove.

[0025] The preferred technical solution adopted by the utility model to solve the above technical problems is: in the unfolded state, the central axis of the second vertical sub-rod and the central axis of the first vertical sub-rod on the corresponding side are located on the same straight line; the second vertical sub-rod includes a fixed sleeve rod, a guide rod and a movable sleeve rod connected to the front wheel from bottom to top; a damping member is provided between the guide rod and the movable sleeve rod.

[0026] The preferred technical solution adopted by the utility model to solve the above technical problems is: the front side surface of the upper bridging seat is provided with raised ribs located on both sides of the front notch of the embedding groove, the first transverse groove is arranged on the raised ribs, and after the locking block is embedded in the locking groove, the front surface of the locking block and the raised ribs smoothly transition to form a continuous surface.

[0027] The preferred technical solution adopted by the utility model to solve the above technical problem is: a groove is provided at the rear end of the upper convex part, the bolt part enters the groove, and the end of the bolt part is restricted on the front wall of the groove.

[0028] The technical solution adopted by the utility model to solve the above technical problems is: a foldable double-pole scooter front frame, including an upper frame with two first vertical poles, a lower frame with two second vertical poles, an upper bridge seat, a lower bridge seat and a locking block;

[0029] The upper bridge seat includes upper sleeve parts on the left and right sides, an upper locking part on the front side and an upper hinge part on the rear side; the lower bridge seat includes lower sleeve parts on the left and right sides, a lower locking part on the front side and a lower hinge part on the rear side;

[0030] The lower end of the first vertical branch rod is firmly inserted into the upper sleeve portion, and the upper end of the second vertical branch rod is firmly inserted into the lower sleeve portion; a sink groove is provided at the upper end of the lower sleeve portion, and an elastic ring is provided in the sink groove;

[0031] The upper hinge part and the lower hinge part are connected via a rotating shaft so that the upper bridge seat can be folded backward relative to the lower bridge seat;

[0032] An embedding groove is provided on the lower side of the upper bridge seat, and lower convex parts are formed on both sides of the embedding groove; an upper convex part adapted to the embedding groove is provided on the upper side of the lower bridge seat, and lower concave parts are formed on both sides of the upper convex part;

[0033] The front side surface of the lower convex portion is provided with a first transverse groove, and the front side surface of the upper convex portion is provided with a second transverse groove;

[0034] In the unfolded state, the upper convex portion is engaged with the embedding groove, the first transverse groove and the second transverse groove are mutually connected transversely to form a locking groove matching the locking block; the central axis of the second vertical branch rod and the central axis of the first vertical branch rod on the corresponding side are located on the same straight line, and the elastic ring is squeezed by the first vertical branch rod and the second vertical branch rod;

[0035] When the locking block is engaged in the locking groove, the middle portion of the locking block is located in the second transverse groove and the two side portions are located in the first transverse groove to limit the upper bridge seat from folding relative to the lower bridge seat, and the upper frame and the lower frame enter a locked state;

[0036] When the locking block is out of the locking groove, the restriction on the upper bridging seat to fold backward relative to the lower bridging seat is released, and the upper frame and the lower frame enter an unlocked state.

[0037] The preferred technical solution adopted by the utility model to solve the above technical problems is: the locking block is controlled by the adjusting member to enter and exit the locking groove;

[0038] The adjusting member comprises a screwing portion and a bolt portion, the upper convex portion is provided with a threaded hole extending forward and backward, and the orifice of the threaded hole is located in the second transverse groove;

[0039] The front side surface of the upper bridge seat is provided with raised ribs located on both sides of the front notch of the embedding groove, the first transverse groove is arranged on the raised ribs, and after the locking block is embedded in the locking groove, the front surface of the locking block and the raised ribs smoothly transition to form a continuous surface;

[0040] In the unfolded state, the bottoms of the first transverse groove and the second transverse groove are flush with each other, and in the locked state, the inner surface of the locking block is tightly against the bottoms of the first transverse groove and the second transverse groove.

[0041] Compared with the prior art, the advantages of the utility model are:

[0042] The two first vertical branch rods on the upper side are connected by the upper bridge seat, and the two second vertical branch rods on the lower side are connected by the lower bridge seat, so that the upper frame and the lower frame connected to the front wheel form a stable quadrilateral structure, making the front body of the vehicle more stable in the unfolded state, and avoiding deformation of the free end of the vertical branch rod in the folded state, further improving stability. In addition, the locked state and the unlocked state can be completed by operating only one locking block, which is convenient, labor-saving and safe to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0044] Figure 1 It is a schematic diagram of the front frame of the utility model in an unfolded and locked state;

[0045] Figure 2 The front frame of the utility model is shown in the unfolded and unlocked state. Figure 2 ;

[0046] Figure 3 It is a schematic diagram of the front frame of the utility model in a folded state;

[0047] Figure 4 This is an exploded view of the front frame of the utility model in an unfolded state;

[0048] Figure 5 It is an exploded view of the front frame of the utility model;

[0049] Figure 6The upper bridge seat and the lower bridge seat of the utility model are assembled together Figure 1 ;

[0050] Figure 7 The upper bridge seat and the lower bridge seat of the utility model are assembled together Figure 2 ;

[0051] Figure 8 It is a schematic diagram of the separation of the upper bridge seat and the lower bridge seat of the utility model. DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0053] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0054] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0055] like Figure 1 , 5 As shown, this embodiment provides a foldable double-pole scooter front frame including an upper frame 100 , a lower frame 200 , an upper bridge seat 1 , a lower bridge seat 2 and a locking block 3 .

[0056] The upper bridge seat 1 is arranged at the lower end of the upper frame 100, and the lower bridge seat 2 is arranged at the upper end of the lower frame 200, and a folding position is formed between the upper bridge seat 1 and the lower bridge seat 2.

[0057] Specifically, the upper bridge seat 1 includes upper sleeve portions 11 on the left and right sides, an upper locking portion 12 on the front side and an upper hinge portion 13 on the rear side. The lower bridge seat 2 includes lower sleeve portions 21 on the left and right sides, a lower locking portion 22 on the front side and a lower hinge portion 23 on the rear side.

[0058] like Figure 1 , 5As shown, the upper frame 100 includes a handlebar 101 and a first vertical sub-rod 102 which is spaced apart from and parallel to the lower end of the handlebar 101. The lower end of the first vertical sub-rod 102 is fastened and inserted into the upper sleeve portion 11. The upper bridge seat 1 connects the two ends of the first vertical sub-rod 102, thereby reducing the possibility of position deviation of the lower end of the first vertical sub-rod 102. The upper frame 100 and the upper bridge seat 1 form a stable quadrilateral structure, which improves the stability and strength of the upper part of the frame.

[0059] Similarly, if Figure 1 As shown, the lower frame 200 includes a pedal connecting seat 201 and a second vertical branch rod 202 connected to both sides of the pedal connecting seat 201 .

[0060] like Figure 2 , 5 As shown, preferably, in this embodiment, the second vertical branch rod 202 includes, from bottom to top, a fixed sleeve rod a connected to the front wheel, a guide rod b and a movable sleeve rod c. The pedal connecting seat 201 is fixed between the two movable sleeve rods c, and a damping member is provided between the guide rod b and the movable sleeve rod c. The movable sleeve rod c can float up and down relative to the fixed sleeve rod a along the guide rod b, so that the front frame plays a shock absorbing role.

[0061] like Figure 1 As shown, the upper end of the second vertical sub-rod 202 is fastened and inserted into the lower sleeve portion 21. The lower bridge seat 2 connects the two ends of the second vertical sub-rod 202, thereby reducing the possibility of position deviation of the upper end of the second vertical sub-rod 202. The lower frame 200 and the lower bridge seat 2, whose lower end is locked by the front wheel, form a stable quadrilateral structure, thereby improving the stability and strength of the lower part of the frame.

[0062] Based on the above, the arrangement of the upper bridge seat 1 and the lower bridge seat 2 has a positive effect on improving the stability and strength of the front frame.

[0063] Furthermore, if Figure 7 As shown, the upper hinge portion 13 and the lower hinge portion 23 are connected via a rotating shaft 4 so that the upper bridge seat 1 can be folded backward relative to the lower bridge seat 2 .

[0064] like Figure 3 , 4 As shown in , 8, the upper locking portion 12 of the upper bridge seat 1 is provided with an embedding groove d on the lower side, and lower convex portions e are formed on both sides of the embedding groove d, and the lower locking portion 22 of the lower bridge seat 2 is provided with an upper convex portion f adapted to the embedding groove d on the upper side, and lower concave portions g are formed on both sides of the upper convex portion f. The front side surface of the lower convex portion e is provided with a first transverse groove s1, and the front side surface of the upper convex portion f is provided with a second transverse groove s2.

[0065] like Figure 3 , 4As shown in , 5, in the unfolded state, the upper protrusion f is engaged with the embedding groove d, the upper bridge seat 1 and the lower bridge seat 2 are connected with each other in an upper and lower concave and convex manner to form a whole, and the first transverse groove s1 and the second transverse groove s2 on the front side of both are transversely connected to each other to form a locking groove s.

[0066] The lock block 3 matches the lock slot s, as shown in Figure 1 As shown, when the locking block 3 is engaged in the locking groove s, the middle portion of the locking block 3 is located in the second transverse groove s2 and the two side portions are located in the first transverse groove s1 to limit the upper bridge seat 1 from folding relative to the lower bridge seat 2, and the upper frame 100 and the lower frame 200 enter a locked state.

[0067] like Figure 2 As shown, when the locking block 3 is out of the locking slot s, the restriction on the upper bridge seat 1 to fold backward relative to the lower bridge seat 2 is released, and the upper frame 100 and the lower frame 200 enter the unlocked state.

[0068] It can be seen that the folding position is set at the front frame itself, so that when the scooter is in the folded and unfolded state, it can be in a stable standing state for easy user operation, and the operation is safer.

[0069] Since the hinged position is located at the rear of the folded position, the state switching should be driven by a certain force, and it can maintain the state when no external force is applied. This not only makes the connection structure more stable and reliable, but more importantly, it is convenient for the user to control the state transition process when switching between the folded and unfolded states, avoiding the situation where the upper frame 100 falls down in an uncontrolled state due to unlocking too quickly, resulting in the user's inability to react in time, and then causing the user to be injured or the vehicle to be damaged.

[0070] More importantly, the locked state and the unlocked state can be achieved by operating only one locking block 3, which is convenient, labor-saving and safe to operate.

[0071] like Figure 5 , 8 As shown, a sink groove is provided at the upper end of the lower sleeve portion 21, and an elastic ring 5 is provided in the sink groove. In the unfolded state, the central axis of the second vertical sub-rod 202 and the central axis of the first vertical sub-rod 102 on the corresponding side are located on the same straight line, and the elastic ring 5 is squeezed by the first vertical sub-rod 102 and the second vertical sub-rod 202. The setting of the elastic ring 5 can play a damping and silencing role, avoiding excessive collision between the upper bridge seat 1 and the lower bridge seat 2 from the folded state to the unfolded state to generate wear and noise.

[0072] like Figure 3 , 8As shown, the lower convex part e protrudes from the lower end surface of the upper sleeve part 11, and the lower concave part g is recessed in the upper end surface of the lower sleeve part 21. In the unfolded state, the lower convex part e and the lower concave part g are embedded. This structure further enhances the horizontal limit of the upper bridge seat 1 and the lower bridge, and improves the structural stability in the unfolded state.

[0073] like Figure 6 As shown, the bottoms of the first transverse groove s1 and the second transverse groove s2 are flush, and when the locking block 3 is engaged in the locking groove s, the inner surface of the locking block 3 is tightly against the bottoms of the first transverse groove s1 and the second transverse groove s2, thereby further reducing the assembly gap between the upper frame 100 and the lower frame 200 in the unfolded and locked state, i.e., in the use state, and further improving the stability and strength of the front frame.

[0074] like Figure 4 As shown, the front side of the upper bridge seat 1 is provided with raised ribs v located on both sides of the front notch of the embedding groove d, and the first transverse groove s1 is arranged on the raised ribs v. Such a setting avoids the bridge seat being too heavy and causing an adverse effect on the center of gravity of the front frame, and does not meet the requirements of lightweight vehicles.

[0075] Preferably, after the locking block 3 is inserted into the locking groove s, the front surface of the locking block 3 smoothly transitions with the raised rib v to form a continuous surface, which not only makes the appearance more beautiful, but also is not easy to accumulate dust, causing the folding structure to jam.

[0076] Preferably, the front side surface of the lower bridge seat 2 is provided with a protruding structure that cooperates with the protruding rib v, so that the integrity of the upper bridge seat 1 and the lower bridge seat 2 after splicing is stronger.

[0077] like Figure 4 As shown, the lock block 3 is controlled by the adjusting member 6 to enter and exit the lock slot s. The adjusting member 6 includes a screwing portion 61 and a bolt portion 62, and the lock block 3 is fixed on the bolt portion 62. The upper convex portion f is provided with a threaded hole k extending forward and backward, and the orifice of the threaded hole k is located in the second transverse groove s2. The rear end of the upper convex portion f is provided with a groove p, and the bolt portion 62 enters the groove p, and the end of the bolt portion 62 is restricted on the front wall of the groove p.

[0078] A preferred embodiment of the utility model is described in detail above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A foldable double-pole scooter front frame, characterized in that: It includes an upper frame, a lower frame, an upper bridge seat, a lower bridge seat and a locking block; The upper bridge seat includes upper sleeve parts on the left and right sides, an upper locking part on the front side and an upper hinge part on the rear side; the lower bridge seat includes lower sleeve parts on the left and right sides, a lower locking part on the front side and a lower hinge part on the rear side; The upper frame comprises a handlebar and a first vertical branch rod which is spaced apart from and parallel to the lower end of the handlebar; the lower end of the first vertical branch rod is fastened and inserted into the upper sleeve portion; The lower frame includes a pedal connection seat and a second vertical branch rod connected to both sides of the pedal connection seat; the upper end of the second vertical branch rod is fastened and inserted into the lower sleeve portion; The upper hinge part and the lower hinge part are connected by a rotating shaft so that the upper bridge seat can be folded backward relative to the lower bridge seat; the lower side of the upper locking part is provided with an embedding groove and lower convex parts are formed on both sides of the embedding groove, and the upper side of the lower locking part is provided with an upper convex part adapted to the embedding groove, and lower concave parts are formed on both sides of the upper convex part; The front side surface of the lower convex portion is provided with a first transverse groove, and the front side surface of the upper convex portion is provided with a second transverse groove; In the unfolded state, the upper convex portion is engaged with the embedding groove, and the first transverse groove and the second transverse groove are mutually connected transversely to form a locking groove; The locking block matches the locking groove. When the locking block is engaged in the locking groove, the middle portion of the locking block is located in the second transverse groove and the two side portions are located in the first transverse groove to limit the upper bridge seat from folding relative to the lower bridge seat, and the upper frame and the lower frame enter a locked state. When the locking block is out of the locking groove, the restriction on the upper bridging seat to fold backward relative to the lower bridging seat is released, and the upper frame and the lower frame enter an unlocked state.

2. The foldable double-pole scooter front frame according to claim 1, characterized in that: The bottoms of the first transverse groove and the second transverse groove are flush, and when the locking block is clamped in the locking groove, the inner surface of the locking block is tightly against the bottoms of the first transverse groove and the second transverse groove.

3. The foldable double-pole scooter front frame according to claim 1, characterized in that: A recessed groove is arranged at the upper end of the lower sleeve portion, and an elastic ring is arranged in the recessed groove; in the unfolded state, the elastic ring is squeezed by the first vertical branch rod and the second vertical branch rod.

4. The foldable double-pole scooter front frame according to claim 1, characterized in that: The lower convex portion protrudes from the lower end surface of the upper sleeve portion, and the lower concave portion is recessed in the upper end surface of the lower sleeve portion. In the unfolded state, the lower convex portion and the lower concave portion are embedded.

5. The foldable double-pole scooter front frame according to claim 1, characterized in that: The locking block is controlled by the adjusting member to enter and exit the locking slot; The adjusting member comprises a screwing portion and a bolt portion, the upper convex portion is provided with a threaded hole extending forward and backward, and the orifice of the threaded hole is located in the second transverse groove.

6. The foldable double-pole scooter front frame according to claim 1, characterized in that: In the unfolded state, the central axis of the second vertical sub-rod is located on the same straight line as the central axis of the first vertical sub-rod on the corresponding side; the second vertical sub-rod includes a fixed sleeve rod, a guide rod and a movable sleeve rod connected to the front wheel from bottom to top; a damping member is provided between the guide rod and the movable sleeve rod.

7. The foldable double-pole scooter front frame according to claim 1, characterized in that: The front side surface of the upper bridge seat is provided with raised ribs located on both sides of the front notch of the embedding groove, and the first transverse groove is arranged on the raised ribs. After the locking block is embedded in the locking groove, the front surface of the locking block smoothly transitions with the raised ribs to form a continuous surface.

8. The foldable double-pole scooter front frame according to claim 5, characterized in that: A groove is formed at the rear end of the upper protrusion, and the bolt portion enters the groove, with the end of the bolt portion being restricted by the front wall of the groove.

9. A foldable double-pole scooter front frame, characterized in that: It comprises an upper frame with two first vertical branch rods, a lower frame with two second vertical branch rods, an upper bridge seat, a lower bridge seat and a locking block; The upper bridge seat includes upper sleeve parts on the left and right sides, an upper locking part on the front side and an upper hinge part on the rear side; the lower bridge seat includes lower sleeve parts on the left and right sides, a lower locking part on the front side and a lower hinge part on the rear side; The lower end of the first vertical branch rod is firmly inserted into the upper sleeve portion, and the upper end of the second vertical branch rod is firmly inserted into the lower sleeve portion; a sink groove is provided at the upper end of the lower sleeve portion, and an elastic ring is provided in the sink groove; The upper hinge part and the lower hinge part are connected by a rotating shaft so that the upper bridge seat can be folded backward relative to the lower bridge seat; an embedding groove is provided on the lower side of the upper bridge seat, and lower convex parts are formed on both sides of the embedding groove; an upper convex part adapted to the embedding groove is provided on the upper side of the lower bridge seat, and lower concave parts are formed on both sides of the upper convex part; The front side surface of the lower convex portion is provided with a first transverse groove, and the front side surface of the upper convex portion is provided with a second transverse groove; In the unfolded state, the upper convex portion is engaged with the embedding groove, the first transverse groove and the second transverse groove are transversely connected to each other to form a locking groove matching the locking block; the central axis of the second vertical branch rod and the central axis of the first vertical branch rod on the corresponding side are located on the same straight line, and the elastic ring is squeezed by the first vertical branch rod and the second vertical branch rod; when the locking block is clamped in the locking groove, the middle part of the locking block is located in the second transverse groove and the two side parts are located in the first transverse groove to limit the upper bridge seat from folding relative to the lower bridge seat, and the upper frame and the lower frame enter a locked state; When the locking block is out of the locking groove, the restriction on the upper bridging seat to fold backward relative to the lower bridging seat is released, and the upper frame and the lower frame enter an unlocked state.

10. The foldable double-pole scooter front frame according to claim 9, characterized in that: The locking block is controlled by the adjusting member to enter and exit the locking slot; The adjusting member comprises a screwing portion and a bolt portion, the upper convex portion is provided with a threaded hole extending forward and backward, and the orifice of the threaded hole is located in the second transverse groove; The front side surface of the upper bridge seat is provided with raised ribs located on both sides of the front notch of the embedding groove, the first transverse groove is arranged on the raised ribs, and after the locking block is embedded in the locking groove, the front surface of the locking block and the raised ribs smoothly transition to form a continuous surface; In the unfolded state, the bottoms of the first transverse groove and the second transverse groove are flush with each other, and in the locked state, the inner surface of the locking block is tightly against the bottoms of the first transverse groove and the second transverse groove.

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