Telescopic frame structure and two-wheeled vehicle

Abstract

The invention discloses a telescopic frame framework and a two-wheeled vehicle. The telescopic frame framework comprises an upper framework body and a lower framework body which are arranged up and down and connected in a telescopic mode. The framework upper body comprises an upper cross beam with the front end used for being connected with a handlebar front wheel, and the upper cross beam extends in the first direction. The framework lower body comprises a lower cross beam, a lower supporting piece and a locking assembly used for locking or loosening the upper cross beam and the lower cross beam. The lower cross beam extends along a first direction; wherein the upper cross beam and the lower cross beam are in surface fitting telescopic connection along a first direction; the upper end of the lower supporting piece is connected with the lower beam, and the lower end of the lower supporting piece extends in the direction away from the upper beam. The telescopic frame structure is good in stability and convenient and fast to operate, and can be stretched out and drawn back manually or electrically; and the appearance of the baking varnish of the vehicle cannot be damaged in the telescopic friction extrusion process. According to the telescopic frame structure, the telescopic function can be achieved for different types and different sizes of vehicles, the size is small, packaging and transportation are convenient, and the transportation cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of two-wheeled vehicles, in particular to the technical field of electric vehicles and bicycles, and more particularly to a telescopic frame structure and a two-wheeled vehicle. Background Art

[0002] Currently, two-wheeled vehicles, such as bicycles and electric bicycles, are typically shipped with the front wheel and fenders removed, along with accessories like the front brake and headlight, to reduce packaging volume and save on shipping costs. However, this packaging method not only increases shipping costs but also complicates installation, leading to various after-sales issues.

[0003] Retractable bicycles and electric vehicles can adjust the size of their bodies, making them convenient for users of different body sizes. At the same time, they can reduce the size of their bodies for easy transportation and packaging.

[0004] However, there are two main problems with the telescopic structure of telescopic bicycles or telescopic electric vehicles in the prior art: Problem 1: The telescopic structure is prone to deformation, causing the telescopic function to fail or the telescopic structure to be difficult to lock. The body of the bicycle will shake when riding, and it does not meet the relevant technical standards for bicycles and electric vehicles.

[0005] Question 2: Existing telescopic structures usually adopt a large tube-in-small tube solution. When locking or extending, the large tube and the small tube rub against each other, which will scratch large areas of paint on the front of the two-wheeled vehicle, greatly affecting the appearance of the two-wheeled vehicle.

[0006] In addition, the application scope of existing retractable bicycles or retractable electric vehicles is relatively narrow.

[0007] For example, Chinese patent document CN110316298B discloses a retractable electric vehicle, comprising a vehicle body, the vehicle body comprising a front body and a rear body, the front body comprising a handlebar, a front fender, a front frame, and a front wheel, the rear body comprising a rear frame, a rear wheel, and a seat, a retractable fixing device connected between the front frame and the rear frame for adjusting and fixing the relative position between the front frame and the rear frame, and a pedal comprising left and right pedal brackets and a sliding plate slidably connected between the left and right pedal brackets, the sliding plate being a bendable plate-like structure, one end of the pedal being internally connected to the front fender and the other end being slidably connected to the top of the rear frame, the front fender and the pedal bracket both having sliding grooves distributed along the length of the vehicle body, the left and right ends of the sliding plate being connected to sliding wheels, the sliding wheels driving the sliding plate to slide along the sliding grooves within the pedal brackets and the front fender. The above technical solution adopts a sliding and retractable design between the front frame and the rear frame, but the above technical solution also has the above-mentioned problems. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems of the existing two-wheeled vehicle in the telescopic structure being unstable, easy to shake, and damaging the surface of the two-wheeled vehicle during the telescopic operation, and to provide a telescopic frame structure and two-wheeled vehicle with a wide range of applications, which has a reasonable and stable telescopic structure, is easy to operate, does not damage the surface appearance of the two-wheeled vehicle during the telescopic operation, and has a wide range of applications.

[0009] The technical solution adopted by the present invention to achieve its invention object is: a telescopic frame structure, including a structure upper body and a structure lower body arranged up and down and telescopically connected; The upper main body of the structure includes an upper crossbeam with a front end for connecting with the handlebar and the front wheel, and the upper crossbeam extends along a first direction; The lower body of the structure includes a lower crossbeam, a lower support member and a locking assembly for locking or loosening the upper crossbeam and the lower crossbeam; the lower crossbeam extends along a first direction; wherein, The upper crossbeam and the lower crossbeam are connected in a telescopic manner along the first direction; The upper end of the lower support member is connected to the lower cross beam, and the lower end of the lower support member extends in a direction away from the upper cross beam and is used to be connected to the rear wheel pedal structure.

[0010] The telescopic frame structure is newly designed to be divided into an upper and lower part, one part being an upper main body of the structure and the other part being a lower main body of the structure. The upper main body of the structure is arranged along a first direction, i.e., the front-rear direction of the two-wheeled vehicle, and the lower main body of the structure is provided with a lower cross beam, below which a lower support member is connected, and the lower cross beam is also arranged along the first direction, and a surface-fitting telescopic connection structure is arranged between the lower cross beam and the upper cross beam along the first direction. That is, in order to achieve the stability setting of the telescopic frame structure, a surface-fitting telescopic connection is adopted to achieve the stability of the telescopic adjustment without shaking, and since the telescopic adjustment is performed on the two opposite surfaces of the upper cross beam and the lower cross beam, even if wear occurs, it will not affect the appearance of the frame. At the same time, the telescopic frame structure is convenient and quick to operate, has good locking performance, and greatly improves the overall stability of the frame structure.

[0011] Preferably, the upper crossbeam includes a first surface and a second surface disposed opposite each other; the lower crossbeam is provided with an upper beam surface, and a surface-fitting telescopic connection is formed between the upper beam surface of the lower crossbeam and the second surface of the upper crossbeam. This surface-fitting telescopic connection between the upper and lower crossbeams enables the entire frame structure to be telescopically adjustable in a first direction. Due to the surface-fitting telescopic connection, the contact surface for telescopic adjustment is large, generating a high static friction force between the surfaces during use, thereby ensuring the overall stability of the frame structure.

[0012] Preferably, the first surface is used to mount the seat; the lower crossbeam is disposed below the second surface, forming a surface-fitting telescopic connection between the lower crossbeam and the upper crossbeam; and the second surface and / or the surface of the lower crossbeam facing the upper crossbeam are provided with anti-slip grooves. By providing the first and second surfaces on the upper crossbeam, the first surface is used to mount the seat, and the second surface is used to achieve a surface-fitting telescopic connection with the lower crossbeam, effectively improving the stability of telescopic adjustment and stability during use. To further enhance the stability between the upper and lower crossbeams, anti-slip grooves are provided on the second surface and / or the surface of the lower crossbeam.

[0013] Preferably, the upper and lower structures are connected by a sliding telescopic mechanism; the upper crossbeam is provided with a slide extending along the first direction; the lower crossbeam is provided with a protruding sliding member, which is slidably connected to the slide. As a preferred solution, the upper and lower structures can be connected by a sliding telescopic mechanism, specifically by a slide in combination with a slide. Of course, other sliding mechanisms can also be used, and can be specifically configured according to the structural requirements of the frame structure.

[0014] As another preferred embodiment, the upper main body of the structure and the lower main body of the structure are connected in a movable and adjustable telescopic manner; the upper crossbeam is provided with a plurality of upper crossbeam adjustment holes along the first direction; and the lower crossbeam is provided with a plurality of lower crossbeam adjustment holes along the first direction. As another preferred embodiment, the upper main body of the structure and the lower main body of the structure are connected in a movable and adjustable telescopic manner to achieve the telescopic movement of the entire frame structure. The locking assembly locks the interior of the upper crossbeam adjustment holes and the lower crossbeam adjustment holes after the connection is adjusted. By providing a plurality of upper crossbeam adjustment holes on the upper crossbeam and a lower crossbeam adjustment hole on the lower crossbeam, the lower crossbeam connection holes on the lower crossbeam and the upper crossbeam connection holes on the upper crossbeam can be selected to correspond to each other according to the needs of telescopic movement, and the telescopic adjustment of the entire frame structure can be achieved by locking the locking combination. The structure is simple and the operation is convenient.

[0015] Preferably, the locking assembly adopts a manual quick-release locking structure; the manual quick-release locking structure includes an eccentric quick-release handle and a quick-release screw.

[0016] Preferably, a threaded hole is provided on the sliding part, and a through hole is provided on the lower crossbeam corresponding to the sliding part. One end of the quick-release screw passes through the through hole and is threadedly connected to the threaded hole, and the other end of the quick-release screw is eccentrically connected to the eccentric quick-release handle to achieve the locking or opening state of the upper and lower bodies.

[0017] Preferably, the locking assembly further includes an anti-slip screw.

[0018] As another preferred embodiment, the locking assembly is a manual locking assembly, and the manual locking assembly includes an adjusting locking bolt. The upper crossbeam adjustment hole and the lower crossbeam adjustment hole are threaded holes, and the adjusting locking screw can be installed and fixed from the lower crossbeam adjustment hole on the lower crossbeam tube to the upper crossbeam adjustment hole on the upper crossbeam, thereby achieving the purpose of locking and fixing.

[0019] As an option, the vehicle further comprises an electric telescopic mechanism, wherein the electric telescopic mechanism adopts a gear-driven sliding telescopic structure. The telescopic frame structure can also be driven by the electric telescopic mechanism to realize automatic telescoping.

[0020] Preferably, the electric gear-driven sliding telescopic structure includes a driving motor, a driving gear and a rack.

[0021] Preferably, the drive motor is disposed on the lower body of the structure, a drive end of the drive motor is connected to a drive gear, the rack is disposed on the upper crossbeam and extends along the first direction, and the drive gear and the rack are meshed. Rotation of the drive motor drives the drive gear to rotate, which in turn drives the rack to move relative to the rack in the first direction, thereby achieving telescopic adjustment of the relative position between the upper crossbeam and the lower crossbeam.

[0022] Preferably, the telescopic frame structure further includes a limiting structure comprising a positioning groove provided on the upper crossbeam and a positioning ridge provided on the lower crossbeam. By providing the limiting structure, the stability of the adjustment process can be ensured during the telescopic adjustment process.

[0023] Preferably, the positioning groove is provided on the second surface of the upper beam and extends along the first direction, and the width of the positioning groove gradually increases in the direction from the upper beam to the lower beam.

[0024] Preferably, the positioning ridge is extended along the first direction and arranged on the upper beam surface of the lower cross beam. The shape of the positioning ridge matches the shape of the positioning groove, and the positioning ridge is slidably connected to the positioning groove along the first direction.

[0025] Preferably, a battery compartment and a control box compartment are provided in the upper crossbeam, and the battery compartment and the control compartment are distributed along the first direction. A battery-powered base is provided between the battery compartment and the control box compartment, and connectors are provided on both sides of the battery-powered base, which extend into the battery compartment and the control box compartment respectively. The end of the battery compartment away from the control box compartment extends to the end of the upper crossbeam tube and forms an opening.

[0026] Preferably, the lower body of the structure further includes a rear fork, one end of which is rotatably connected to an end of the lower support member away from the lower crossbeam, an upper mounting seat being provided on the lower support member, and a lower mounting seat being provided on the rear fork, wherein the upper and lower mounting seats are used to mount shock absorbers. A front shock absorber can be mounted via the upper and lower mounting seats.

[0027] As another preferred embodiment, the lower body of the structure further comprises a rear fork, one end of the rear fork being rotatably connected to an end of the lower support member remote from the lower crossbeam, the rear fork comprising a rear fork plate remote from one end of the lower support member, a lower mounting seat being provided on the rear fork plate, an upper mounting seat being provided on the lower crossbeam, and the upper and lower mounting seats being used to mount a shock absorber. Alternatively, the rear fork may be provided with two rear shock absorbers, or with both a rear shock absorber and a front shock absorber.

[0028] Preferably, the upper crossbeam is provided with a wiring groove extending along the first direction and a first wiring hole communicating with the wiring groove; and the lower support member is provided with a second wiring hole.

[0029] Preferably, a lamp holder plate extending toward the lower beam is fixed on the upper beam.

[0030] Preferably, the upper crossbeam is a square tube or a round tube with a single or double layer structure; the lower crossbeam and the upper crossbeam are connected by a mutual interlocking movable connection or a mutual abutting movable connection. The structure of the upper and lower crossbeams is not specifically limited, and can be a tube or a plate. The upper mold beam and the lower crossbeam can be connected by a mutual interlocking movable connection or a mutual abutting movable connection. The technical solution adopted by the present invention to achieve its second invention object is: a telescopic two-wheeled vehicle, including the telescopic frame structure.

[0031] The beneficial effect of the present invention is that, compared with the prior art, the telescopic vehicle frame provided by the present invention, by arranging the upper cross beam and the lower cross beam to be telescopically connected along the front-to-back direction of the vehicle body, enables the upper body of the frame and the lower body of the frame to move relative to each other in the front-to-back direction, thereby realizing the telescopic movement of the vehicle body.

[0032] When the locking assembly releases the upper crossbeam and the lower crossbeam, the upper crossbeam and the lower crossbeam can move relative to each other. When the locking assembly locks the upper crossbeam and the lower crossbeam, the upper crossbeam and the lower crossbeam are relatively fixed, the length of the vehicle body is adjusted, and the upper main body of the structure and the lower main body of the structure are fixed as one.

[0033] On the other hand, the upper crossbeam and the lower crossbeam that produce relative telescopic movement in the present invention are distributed up and down. When the upper crossbeam and the lower crossbeam produce relative movement, the second surface of the upper crossbeam and the upper surface of the lower crossbeam produce friction. Even if the above two surfaces have problems such as scratches, they are not easy to be detected and are unlikely to affect the appearance of the two-wheeled vehicle.

[0034] Furthermore, because the upper and lower crossbeams of the present invention together form the transversely extending structural body of the telescopic frame structure, when the frame bears weight, downward pressure is applied to the upper portion of the upper crossbeam, causing the upper and lower crossbeams to be vertically squeezed relative to each other. This squeezing force increases the static friction between the upper and lower crossbeams, making relative sliding between the upper and lower crossbeams difficult, thereby ensuring the overall stability of the telescopic frame structure. Furthermore, the provision of a positioning structure between the upper and lower crossbeams further enhances the overall stability of the frame structure.

[0035] In addition, the telescopic frame structure provided by the present invention has a simple and reasonable structure, and one structure can be simultaneously applicable to different types of vehicle models, such as bicycles, electric bicycles, etc., and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an exploded view of the telescopic frame structure of the present invention.

[0037] Figure 2 This is a diagram of a locked state of the telescopic frame structure of the present invention.

[0038] Figure 3 It is a schematic diagram of the telescopic principle of the telescopic frame structure of the present invention.

[0039] Figure 4 This is an exploded view of the telescopic frame structure in Example 2.

[0040] Figure 5 This is a locked state diagram of the telescopic frame structure in Example 2.

[0041] Figure 6 This is a rear view of the telescopic frame structure in Example 2.

[0042] Figure 7 This is a three-dimensional structural diagram of the telescopic frame structure in Example 2.

[0043] Figure 8 This is a three-dimensional structural diagram of the telescopic frame structure in Example 2 from another angle.

[0044] Figure 9 It is a cross-sectional schematic diagram of an embodiment of the telescopic frame structure in Example 7.

[0045] Figure 10 This is a structural diagram of the intelligent control interface in Example 7.

[0046] Figure 11a 、 11b 11c and 11d are cross-sectional views of upper beams and lower beams of different structures in the present invention.

[0047] Figure 12 It is a structural diagram of the telescopic frame structure in Example 8.

[0048] Figure 13 It is a three-dimensional structural diagram of the telescopic frame structure in Example 8.

[0049] Figure 14 It is a front view schematic diagram of the telescopic electric vehicle of the present invention.

[0050] Figure 15 It is a schematic structural diagram of the telescopic electric vehicle of the present invention in a retracted and folded state.

[0051] In the figure: 10, telescopic frame structure, 20, seat, 30, handlebar, 31, seat tube, 40, front fork, 50, front wheel, 60, rear wheel, 70, wheel disc, 71, pedals, 80, battery, 90, shock absorber, 100, telescopic electric vehicle, 101, driving motor, 102, driving gear, 103, rack; 104. Intelligent control interface, 1041. Forward key, 1042. Backward key, 1043. Lock key; 11. The main body of the structure, 111, upper beam, 111a, first surface, 111b, second surface, 111c, battery compartment, 111d, control box compartment, 1111, slideway, 1112, positioning slot, 1113, wiring slot, 1114, elbow, 1115, lamp stand plate, 1116, battery powered base, 1117, support tube, 1118, bridge plate, 1119, upper beam adjustment hole; 112, head tube; 12. Lower body of the structure, 121. Lower crossbeam, 121a. Upper beam surface, 1211. Sliding member, 1212. Positioning ridge, 1213. Anti-slip groove, 1214. Lower crossbeam adjustment hole; 122, lower support member, 1221, second wiring hole, 1222, upper mounting seat; 123. Locking assembly, 1231. Eccentric quick-release handle, 1232. Quick-release screw, 1233. Anti-slip screw, 1234. Adjustable locking bolt; 124, rear fork, 1241, lower mounting seat, 1242, rear fork plate; 125. Connecting shaft, 126. Five-way bracket. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0053] Example 1: In Figure 1, Figure 2 、 Figure 3 In the illustrated embodiment, a telescopic frame structure 10 is provided. The telescopic frame structure 10 forms the main body of a two-wheeled vehicle, which primarily refers to two-wheeled electric or non-electric vehicles such as bicycles, electric vehicles, or motorcycles. In this embodiment, the telescopic frame structure 10 forms the main body of a non-electric bicycle.

[0054] The telescopic frame structure 10 may be made of aluminum alloy or steel, or a combination of the two materials, or other materials suitable for making a frame.

[0055] In the vertical direction, the telescopic frame structure 10 mainly includes an upper frame body 11 and a lower frame body 12 which are arranged up and down and can be relatively telescopically adjusted and can be locked and fixedly connected as a whole.

[0056] The upper main body 11 of the structure includes an upper crossbeam 111, and the upper crossbeam 111 extends along a first direction X (ie, a front-to-back direction). The front end of the upper crossbeam 111 is used to connect with the handlebars and the front wheel.

[0057] The upper crossbeam 111 includes a first surface 111a and a second surface 111b disposed opposite each other. Specifically, the first surface 111a is the upper surface for arranging the seat cushion, and the second surface 111b is the lower surface for connecting to the lower structure body 12 below.

[0058] The lower structure body 12 includes a lower crossbeam 121 , a lower support member 122 and a locking assembly 123 .

[0059] The lower beam 121 is disposed on one side of the upper beam 111 and faces the second surface 111 b . The lower beam 121 extends along the first direction X. The upper beam 111 and the lower beam 121 are slidably connected along the first direction X.

[0060] Specifically, the lower crossbeam 121 is disposed below the upper crossbeam 111, and the two are arranged parallel to each other. An upper beam surface 121a is provided on the side of the lower crossbeam 121 facing the upper crossbeam. The upper and lower crossbeams 111 and 121 are arranged in a surface-fitting, telescopic connection along a first direction; that is, the second surface 111b of the upper crossbeam fits and telescopes with the upper beam surface 121a of the lower crossbeam, achieving a sliding connection in the first direction X, thereby extending or contracting the telescopic frame structure and, in turn, achieving extension or contraction of the entire vehicle.

[0061] The locking assembly 123 is connected between the upper crossbeam 111 and the lower crossbeam 121 and is used to lock or release the upper crossbeam 111 and the lower crossbeam 121. The locking assembly 123 can be a manual locking assembly or an automatic locking assembly. In this embodiment, the locking assembly 123 is a manual locking assembly.

[0062] The top end of the lower support member 122 is connected to the lower crossbeam 121, and the bottom end of the lower support member 122 extends away from the upper crossbeam 111, for connection to the rear wheel, pedals, and other components. Specifically, the lower support member 122 extends rearward in a vertical direction or at a certain angle to the vertical direction. The bottom end of the lower support member 122 is rotatably connected to the rear fork 124 via a connecting shaft 125. A bottom bracket 126 is also mounted at the bottom end of the lower support member 122 for mounting components such as pedals.

[0063] The telescopic frame structure 10 is configured such that the upper crossbeam 111 and the lower crossbeam 121 are slidably connected along the front-to-back direction of the vehicle body, allowing the upper frame body 11 and the lower frame body 12 to move relative to each other in the front-to-back direction, thereby achieving telescopic movement of the vehicle body. When the locking assembly 123 releases the upper crossbeam 111 and the lower crossbeam 121, the upper crossbeam 111 and the lower crossbeam 121 can slide relative to each other. When the locking assembly 123 locks the upper crossbeam 111 and the lower crossbeam 121, the upper crossbeam 111 and the lower crossbeam 121 are relatively fixed, the vehicle body length is adjusted, and the upper frame body 11 and the lower frame body 12 are fixed as a whole.

[0064] On the other hand, the upper cross beam 111 and the lower cross beam 121 that generate relative sliding in the present invention are distributed up and down. When the upper cross beam 111 and the lower cross beam 121 generate relative sliding, the second surface 111b (i.e., the lower surface) of the upper cross beam 111 and the upper beam surface 121a of the lower cross beam 121 generate friction. Even if the above two surfaces have problems such as scratches, they are not easy to be noticed and are unlikely to affect the appearance of the two-wheeled vehicle.

[0065] On the other hand, since the upper crossbeam 111 and the lower crossbeam 121 of the present invention together constitute the laterally extending structural body of the telescopic frame structure 10, when the frame bears weight, downward pressure is applied to the upper portion of the upper crossbeam 111, and the upper crossbeam 111 and the lower crossbeam 121 are relatively squeezed in the vertical direction. Under the action of the squeezing force, the static friction between the upper crossbeam 111 and the lower crossbeam 121 increases, making it difficult for the upper crossbeam 111 and the lower crossbeam 121 to slide relative to each other, thereby ensuring the overall stability of the telescopic frame structure 10.

[0066] In addition, the telescopic frame structure 10 provided by the present invention has a simple and reasonable structure, and one structure can be simultaneously applicable to different types of vehicle models, such as bicycles, electric bicycles, etc., and has a wide range of applications.

[0067] Example 2: exist Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 In the embodiment shown, a telescopic frame structure is provided. In this embodiment, the telescopic frame structure 10 is used to form the body of the electric bicycle. The technical solution is basically the same as that of embodiment 1, except that: The upper crossbeam 111 is a square tube or a round tube with a single-layer or double-layer structure; the lower crossbeam 121 and the upper crossbeam 111 are connected to each other in a movable manner.

[0068] The cross sections of the upper cross beam 111 and the lower cross beam 121 are both rectangular.

[0069] The upper beam 111 is provided with a slide 1111 extending along the first direction X. The slide 1111 is arranged on a side of the upper beam 111 close to the lower beam 121. A sliding member 1211 is protruded from the side of the lower beam 121 facing the upper beam 111. The sliding member 1211 is slidably connected to the slide 1111.

[0070] In this embodiment, the upper beam 111 and the lower beam 121 slide relative to each other by sliding the sliding member 1211 in the slideway 1111. In other embodiments, the slideway 1111 may be provided on the upper surface of the lower beam 121, and the sliding member 1211 may be provided on the second surface 111b of the upper beam 111.

[0071] like Figure 6 、 Figure 7 、 Figure 8As shown, specifically, in this embodiment, there are two slides 1111, and the two slides 1111 are parallel and symmetrically arranged. Accordingly, two sliding members 1211 are respectively arranged at the front and rear ends of each slide 1111, and a total of four sliding members 1211 are provided, so that the sliding members 1211 can slide stably in the corresponding slides 1111, ensuring the stable connection between the upper beam 111 and the lower beam 121.

[0072] In other embodiments, the number of slideways 1111 may be other numbers, such as one or three, and each slideway 1111 may also be provided with other numbers of sliding members 1211 , which is not specifically limited in the present invention.

[0073] Specifically, in this embodiment, Figure 6 As shown, the slide 1111 is a T-slot. In other embodiments, the shape of the slide 1111 can also be a dovetail groove or the like, and the shape of the sliding member 1211 is adapted to the shape of the slide 1111 .

[0074] The present invention does not impose any specific restrictions on the shape and connection method of the upper beam 111 and the lower beam 121, as long as they can achieve relative sliding. Figure 11a 、 11b , 11c, 11d, Figure 11a 、 11b , 11c, and 11d are cross-sectional views illustrating a portion of an upper beam and a lower beam.

[0075] like Figure 11a In the embodiment shown, the upper crossbeam is a double-layer square tube, and the slide 1111 is a T-slot. In other embodiments, the shape of the slide 1111 can also be a dovetail groove or the like, and the shape of the sliding member 1211 is adapted to the shape of the slide 1111.

[0076] like Figure 11b In the embodiment shown, the cross section of the upper crossbeam 111 is circular, and the upper crossbeam 111 and the lower crossbeam 121 are interlocked and slidably connected with each other via a parent-child slide 1111 .

[0077] like Figure 11c In the illustrated embodiment, the upper crossbeam is a single-layer square tube. A T-shaped slideway 1111 is formed at the bottom of the upper crossbeam 111. The lower crossbeam 121 is generally T-shaped and slides within the T-shaped slideway 1111. The upper and lower crossbeams are connected by a side or bottom adjustment and locking mechanism. This is primarily applicable to structures that utilize manually adjustable locking bolts.

[0078] like Figure 11dIn the embodiment shown, the upper crossbeam is a double-layer square tube, and only one slideway 1111 is provided. This structure can narrow the width of the upper crossbeam 111 and the lower crossbeam 121 and is suitable for bicycles or light electric vehicles.

[0079] Example 3: exist Figures 1 to 8 In the embodiment shown, a telescopic frame structure is provided. In this embodiment, the technical solution is basically the same as that of Embodiment 1 and Embodiment 2, except that the locking assembly includes a manual locking assembly, and the manual locking assembly adopts a manual quick-release locking structure.

[0080] The locking assembly 123 includes a quick release assembly, and the quick release assembly includes an eccentric quick release handle 1231 and a quick release screw 1232 .

[0081] A threaded hole is provided in the sliding member 1211, and a through hole is provided in the lower crossbeam 121 corresponding to the sliding member 1211. One end of the quick-release screw 1232 passes through the through hole and is threadedly connected to the threaded hole, and the other end of the quick-release screw 1232 is eccentrically connected to the eccentric quick-release handle 1231.

[0082] Specifically, the eccentric quick-release handle 1231 is arranged on a side of the lower beam 121 away from the upper beam 111 , and the through hole of the lower beam 121 and the threaded hole in the sliding member 1211 both extend in the vertical direction.

[0083] When the eccentric quick-release handle 1231 rotates eccentrically forward relative to the quick-release screw 1232, the arc surface of the eccentric quick-release handle 1231 gradually approaches and squeezes the lower beam 121, causing the lower beam 121 to gradually approach the sliding member 1211, so that the sliding member 1211 and the lower beam 121 clamp the upper beam 111 from the upper and lower sides, thereby locking the upper beam 111 and the lower beam 121.

[0084] When the eccentric quick-release handle 1231 is eccentrically reversed relative to the quick-release screw 1232, the arc surface of the eccentric quick-release handle 1231 gradually moves away from the lower beam 121, causing the lower beam 121 to gradually move away from the sliding member 1211, so that the sliding member 1211 and the lower beam 121 are separated from the upper beam 111, thereby unlocking the upper beam 111 and the lower beam 121.

[0085] In this embodiment, the quick release assembly is provided to achieve the rapid locking and separation of the upper crossbeam 111 and the lower crossbeam 121. In other embodiments, the quick release assembly can also be provided laterally, and the upper crossbeam 111 and the lower crossbeam 121 can be locked by providing a lateral force, such as Figure 7 shown.

[0086] The locking assembly 123 further includes an anti-slip screw 1233 .

[0087] The lower crossbeam 121 is provided with at least one threaded through hole arranged along the first direction X, and the upper crossbeam 111 is correspondingly provided with at least one positioning hole arranged along the first direction X. The anti-slip screw 1233 is threadedly connected to the threaded through hole and passes through the lower crossbeam 121 and is inserted into the positioning hole.

[0088] The anti-slip screw 1233 is used to position the upper cross beam 111 and the lower cross beam 121 in the first direction X. After the vehicle body length adjustment is completed, the upper cross beam 111 and the lower cross beam 121 can be further fixed by the anti-slip screw 1233. Thereafter, even if the user forgets to lock the quick-release assembly or the quick-release assembly fails, the upper cross beam 111 and the lower cross beam 121 can be prevented from relative movement.

[0089] In this embodiment, the locking assembly 123 achieves double security by simultaneously providing a quick release assembly and an anti-slip screw 1233. In other embodiments, the locking assembly 123 may also only include an anti-slip screw 1233 and corresponding threaded through holes and positioning holes to replace the quick release assembly.

[0090] Example 4: exist Figure 6 、 Figure 7 、 Figure 8 In the embodiment shown, the technical solution is basically the same as that in the above embodiment, except that: The telescopic frame structure 10 further includes a limiting structure; the limiting structure includes a positioning groove 1112 provided on the upper crossbeam 111 and a positioning ridge 1212 provided on the surface of the lower crossbeam 121 .

[0091] A positioning groove 1112 is provided on the second surface 111b of the upper crossbeam 111, extending along the first direction X. The width of the positioning groove 1112 gradually increases as the upper crossbeam 111 points toward the lower crossbeam 121 (i.e., from top to bottom). A positioning protrusion 1212 is provided on the side of the lower crossbeam 121 facing the upper crossbeam 111. The shape of the positioning protrusion 1212 matches that of the positioning groove 1112, and the positioning protrusion 1212 and the positioning groove 1112 are slidably connected along the first direction X.

[0092] Specifically, in this embodiment, the positioning groove 1112 is provided between the two slideways 1111, and the cross-sections of the positioning groove 1112 and the positioning ridge 1212 are both V-shaped. When the upper crossbeam 111 and the lower crossbeam 121 are assembled, the positioning ridge 1212 cooperates with the positioning groove 1112 to achieve positioning of the upper crossbeam 111 and the lower crossbeam 121. When the upper crossbeam 111 and the lower crossbeam 121 are locked, the force between the two can be dispersed through the mating surface of the positioning ridge 1212 and the positioning groove 1112, thereby ensuring the strength of the upper crossbeam 111 and the lower crossbeam 121.

[0093] In other embodiments, the positioning grooves 1112 and positioning ridges 1212 may be provided in plurality, and the shapes thereof are not limited by the present invention. The positioning grooves 1112 and positioning ridges 1212 may also be provided on the lower beam 121 and the upper beam 111 respectively.

[0094] Furthermore, if Figure 7 As shown, the surface of the lower crossbeam 121 facing the upper crossbeam 111 is provided with anti-slip grooves 1213. Specifically, the anti-slip grooves 1213 can be a plurality of grooves or ridges arranged along the first direction X to further increase the friction between the upper crossbeam 111 and the lower crossbeam 121 after locking. In other embodiments, the anti-slip grooves 1213 can also be provided on the second surface 111b.

[0095] Example 5: exist Figure 6 、 Figure 7 、 Figure 8 In the embodiment shown, the technical solution also includes: The upper crossbeam 111 is provided with a wiring groove 1113 extending along the first direction X and a first wiring hole (not shown) communicating with the wiring groove 1113 .

[0096] The lower support member 122 is a hollow structure, and is provided with a second wiring hole 1221. Specifically, in this embodiment, there are two wiring grooves 1113, which are respectively arranged on both sides of the two slideways 1111 and arranged in parallel with the slideways 1111 for easy preparation and formation.

[0097] The first wiring hole is provided at the bottom or side of the upper crossbeam 111 and is connected to the wiring groove 1113. The second wiring hole 1221 is provided at the top of the lower support member 122. Bicycles or electric vehicles usually have wiring such as brake lines and control lines. The structure of this embodiment allows the wiring to enter the wiring groove 1113 from the side of the front of the vehicle and extend within the wiring groove 1113, then leave the upper crossbeam 111 from the first wiring hole, and then enter the hollow lower support member 122 from the second wiring hole 1221, hiding most of the wiring in the vehicle frame, protecting the wiring while improving the aesthetics of the two-wheeled vehicle. In other embodiments, the number and shape of the wiring grooves 1113 can also be other, and the present invention does not specifically limit them.

[0098] Example 6: exist Figures 1 to 8 In the embodiment shown, the technical solution is basically the same as that in embodiment 2, except that: A lamp holder plate 1115 is fixed on the second surface 111 b of the upper crossbeam 111 . The lamp holder plate 1115 extends in a direction away from the first surface 111 a and is disposed at an end of the upper crossbeam 111 .

[0099] Specifically, one side of the light bracket plate 1115 is fixed to the bottom of the rear end of the upper crossbeam 111 and extends downward at a 90° angle. The light bracket plate 1115 is used to mount the taillights and to limit the lower crossbeam 121, preventing it from disengaging from the slideway 1111 at the rear end of the upper crossbeam 111.

[0100] like Figure 7 、 Figure 8 As shown, a battery compartment 111c and a control box compartment 111d are provided in the upper crossbeam 111. The battery compartment 111c and the control box compartment 111d are distributed along the first direction X.

[0101] A battery power base 1116 is located between the battery compartment 111c and the control box compartment 111d. Connectors are located on either side of the battery power base 1116, extending into the battery compartment 111c and the control box compartment 111d, respectively. The end of the battery compartment 111c, facing away from the control box compartment 111d, extends to the end of the upper crossbar 111, forming an opening.

[0102] Specifically, the upper crossbeam 111 is a hollow structure, which is divided into two compartments, front and rear, by a battery-powered base 1116. The front compartment is a control box compartment 111d for installing the control box; the rear compartment is a battery compartment 111c for installing the battery 80. The battery 80 can be inserted into the battery compartment 111c through an opening at the rear of the upper crossbeam 111. The battery and control box are electrically connected via connectors on both sides of the battery-powered base 1116. The battery is fixed to the upper crossbeam 111 via a fixing lock at its rear end.

[0103] In the aforementioned embodiment, the relative movement between the upper beam 111 and the lower beam 121 can be achieved manually. In other embodiments, the relative movement between the upper beam 111 and the lower beam 121 can also be achieved by electric drive.

[0104] Example 7: exist Figure 9 In the embodiment shown, the technical solution is substantially the same as that in embodiment 2, except that: in this embodiment, the telescopic frame structure 10 adopts an electric telescopic mechanism to achieve telescopic adjustment.

[0105] The electric telescopic mechanism adopts a gear-driven sliding telescopic structure, and the electric gear-driven sliding telescopic structure includes a driving motor 101, a driving gear 102 and a rack 103.

[0106] The drive motor 101 is arranged on the lower beam 121, and can also be arranged on the lower support member 122. The driving end of the drive motor 101 is connected to the drive gear 102. The rack 103 is arranged below the upper beam 111, and the rack 103 extends along the first direction X. The drive gear 102 is engaged with the rack 103.

[0107] In this embodiment, the driving motor 101 can drive the driving gear 102 to rotate and drive the rack 103 to move along the first direction X, thereby achieving relative movement between the upper beam 111 and the lower beam 121 .

[0108] like Figure 10 As shown, in this embodiment, the telescopic frame structure 10 can also be controlled through the intelligent control interface 104.

[0109] The intelligent control interface 104 includes a forward key 1041, a backward key 1042, and a lock key 1043, which are respectively used to control the forward and reverse rotation of the drive motor 101 to control the extension and retraction of the vehicle body. The lock key 1043 is used to lock the forward key 1041 and the backward key 1042. The intelligent control interface 104 can be installed on the telescopic frame structure 10, or it can be an app operation interface to control the vehicle body via Bluetooth or other means.

[0110] See Figures 1 to 8 In some embodiments, the lower body 12 of the structure further includes a rear fork 124 .

[0111] One end of the rear fork 124 is rotatably connected to one end of the lower support member 122 away from the lower crossbeam 121. Furthermore, the rear fork 124 is a hollow structure, and the wiring can enter the hollow rear fork 124 after leaving the lower support member 122, further hiding the wiring.

[0112] Further, see Figures 1 to 8 In some embodiments, an upper mounting seat 1222 is provided on the lower support member 122 , and a lower mounting seat 1241 is provided on the rear fork 124 .

[0113] The shock absorber is connected between the upper mounting seat 1222 and the lower mounting seat 1241. Specifically, in this embodiment, the upper mounting seat 1222 is disposed in the lower support member 122, and the lower mounting seat 1241 is disposed at a position of the rear fork 124 close to the lower support member 122.

[0114] The upper cross beam 111 and the lower cross beam 121 of the aforementioned embodiment may be made of aluminum profiles. In other embodiments, the upper cross beam 111 and the lower cross beam 121 may be made of steel.

[0115] Example 8: exist Figure 12 、 Figure 13 In the embodiment shown, a telescopic frame structure 10 is provided, wherein the upper body 11 and the lower body 12 of the structure are connected in a movable and adjustable telescopic manner; the upper crossbeam 11 is provided with a plurality of upper crossbeam adjustment holes 1119 along a first direction; A plurality of lower beam adjustment holes 1214 are provided on the lower beam 121 along the first direction; the locking assembly 123 locks and connects the adjusted upper beam adjustment holes 1119 and the lower beam adjustment holes 1214 .

[0116] Furthermore, the upper crossbeam 111 is a square tube or a round tube with a single-layer or double-layer structure; the lower crossbeam 121 and the upper crossbeam 111 are connected to each other in a movable manner.

[0117] Specifically, the upper crossbeam 111 includes a curved tube 1114, a support tube 1117, and a bridge plate 1118. Two curved tubes 1114 are distributed on both sides and are connected to each other by two bridge plates 1118. Multiple vertical support tubes 1117 are provided between the curved tubes 1114. A cavity is formed in the upper crossbeam 111 for installing batteries and a control box. The lower crossbeam 121 fits under the bridge plate 1118 below the upper crossbeam 111 and is locked by a locking assembly 123. The locking assembly includes an adjusting locking bolt 1234. This embodiment has a simple structure and can be made of steel at a low cost.

[0118] The first surface 111 a and the second surface 111 b of the upper cross beam 111 are respectively disposed on the upper surface and the lower surface of the upper and lower bridge plates 1118 .

[0119] The upper crossbeam 111 and the lower crossbeam 121 are arranged in a surface-fitting telescopic connection structure along the first direction; that is, the second surface 111b on the upper crossbeam and the upper beam surface 121a on the lower crossbeam fit and telescope to achieve a sliding connection in the first direction X, thereby extending or shortening the telescopic frame structure, and further achieving the extension or shortening of the entire vehicle.

[0120] Furthermore, the shock absorber can also be set in other positions. Continuing to refer to Figure 11, the rear fork 124 includes a rear fork piece 1242 away from one end of the lower support member 122. The rear fork piece 1242 is provided with a lower mounting seat 1241, and the lower crossbeam 121 is provided with an upper mounting seat 1222. Specifically, the upper mounting seat 1222 is provided at the tail of the lower crossbeam 121, and the shock absorber is connected between the upper mounting seat 1222 and the lower mounting seat 1241. It should be noted that the above-mentioned multiple upper mounting seats and lower mounting seats can exist at the same time, which is convenient for setting shock absorbers at different positions according to different needs.

[0121] Example 9: See Figure 14 、 Figure 15 and combined Figure 7 、 Figure 8 The present invention further provides a telescopic electric vehicle, wherein the telescopic electric vehicle 100 includes the telescopic frame structure 10 of any of the above embodiments.

[0122] A seat cushion 20 is provided above the upper crossbeam 111, and a head tube 112 is provided at the front end of the upper crossbeam 111. A seat tube 31 is connected to the top of the head tube 112. The seat tube 31 can be fixedly connected or rotatably connected to the head tube 112. A handlebar 30 is connected to the top of the seat tube 31 to form a fixed handlebar or a foldable handlebar. Figure 15 The foldable electric vehicle is shown in a state where it is fully collapsed and the handlebars are folded.

[0123] The bottom end of the head tube 112 is connected to the front fork 40 , the bottom end of the front fork 40 is rotatably connected to the front wheel 50 , and the rear wheel 60 is rotatably connected to the rear fork plate 1242 .

[0124] The bottom of the lower support member 122 is rotatably connected to a wheel disc 70 and a pedal 71. A shock absorber 90 is connected between the upper mounting seat 1222 and the lower mounting seat 1241. It should be noted that Figure 14 and Figure 15 Two locations where the shock absorber 90 can be set are shown, but the two shock absorbers 90 do not need to exist at the same time.

[0125] The telescopic electric vehicle 100 further includes a battery 80 and a control box (not shown), which are respectively disposed in the battery compartment 111 c and the control box compartment 111 d .

[0126] The telescopic frame structure 10 of the present invention can also be applied to a bicycle to provide a telescopic bicycle.

[0127] The telescopic frame structure and telescopic two-wheeled vehicle described in the above embodiments, the telescopic frame structure, mainly consists of two parts: the upper body of the structure and the lower body of the structure. The upper crossbeam in the upper body of the structure can be a single-layer structure or a double-layer structure. The upper crossbeam can be made of plates or pipes. The pipes can be square pipes or round pipes. The battery and controller compartment can be integrated inside the upper crossbeam. A single slide or a double slide can be used. An internal wiring groove, a gear drive groove, and a concave positioning groove can be provided on the upper crossbeam. The upper rear portion of the upper crossbeam is the seat cushion installation position. The lower body of the structure mainly includes a lower crossbeam, a lower support member and a locking assembly. The lower support member is provided with a connecting shaft for the five-way and rear fork link, a rear fork, and a shock absorber installed on the rear fork.

[0128] The telescopic frame structure of the present invention can be extended and locked manually as well as electrically. Its multifunctional and versatile design makes it suitable for a wide range of electric vehicles, such as electric scooters and electric bicycles. It is also compatible with vehicles of varying wheel diameters and sizes. Furthermore, the structure can be extended to form a variety of different structures and complete vehicles. The telescopic frame structure of the present invention can be widely applied to various types of two-wheeled bicycles, electric bicycles, and other types of vehicles, without being specifically limited by the present invention.

[0129] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A telescopic frame structure, characterized in that: It comprises an upper structural body (11) and a lower structural body (12) which are arranged up and down and are telescopically connected; The upper main body (11) of the structure comprises an upper crossbeam (111) with a front end for connecting to the handlebar and front wheel, and the upper crossbeam (111) extends along a first direction; The lower main body (12) of the structure comprises a lower crossbeam (121), a lower support member (122), and a locking assembly (123) for locking or loosening the upper crossbeam and the lower crossbeam; the lower crossbeam (121) extends along a first direction; wherein, The upper crossbeam (11) and the lower crossbeam (12) are connected in a telescopic manner along a first direction in a surface-fitting manner; The upper end of the lower support member (122) is connected to the lower crossbeam (121), and the lower end of the lower support member (122) extends in a direction away from the upper crossbeam.

2. The telescopic frame structure according to claim 1, characterized in that: The upper crossbeam (111) comprises a first surface (111a) and a second surface (111b) arranged opposite to each other; an upper beam surface (121a) is provided on the lower crossbeam (121); and the surface-fitting telescopic connection is formed between the upper beam surface (121a) of the lower crossbeam (121) and the second surface (111b) of the upper crossbeam (111).

3. The telescopic frame structure according to claim 2, characterized in that: The upper structure body (11) and the lower structure body (12) are connected in a sliding and telescopic manner; The upper crossbeam (111) is provided with a slideway (1111) extending along the first direction; A sliding member (1211) is protruded from the lower crossbeam (121), and the sliding member (1211) is slidably connected to the slideway (1111).

4. The telescopic frame structure according to claim 2, wherein: The upper structure body (11) and the lower structure body (12) are connected in a movable and adjustable telescopic manner; The upper crossbeam (111) is provided with a plurality of upper crossbeam adjustment holes (1119) along the first direction; A plurality of lower crossbeam adjustment holes (1214) are provided on the lower crossbeam (121) along the first direction.

5. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The locking assembly (123) adopts a manual quick-release locking structure; the manual quick-release locking structure comprises an eccentric quick-release handle (1231) and a quick-release screw (1232); The locking assembly (123) further includes an anti-slip screw (1233).

6. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The locking assembly includes an adjusting locking bolt (1234).

7. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: It also includes an electric telescopic mechanism, which adopts a gear-driven sliding telescopic structure.

8. The telescopic frame structure according to claim 7, characterized in that: The electric gear-driven sliding telescopic structure comprises a driving motor (101), a driving gear (102) and a rack (103); The driving motor (101) is arranged on the lower main body (12) of the structure, the driving end of the driving motor (101) is connected to the driving gear (102), the rack (103) is arranged on the upper crossbeam (111) and extends along the first direction, and the driving gear (102) is meshed with the rack (103).

9. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The telescopic frame structure further includes a limiting structure; The limiting structure comprises a positioning groove (1112) provided on the upper crossbeam (111) and a positioning ridge (1212) provided on the lower crossbeam (121); The positioning groove (1112) is extended along the first direction, and the width of the positioning groove (1112) gradually increases in the direction from the upper beam to the lower beam; The positioning ridge (1212) is extended along the first direction, and the shape of the positioning ridge (1212) is adapted to the shape of the positioning groove (1112).

10. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: A battery compartment (111c) and a control box compartment (111d) are provided in the upper crossbeam (111), and the battery compartment (111c) and the control box compartment (111d) are distributed along a first direction; A battery power base (1116) is provided between the battery compartment (111c) and the control box compartment control closing compartment (111d), and connectors are provided on both sides of the battery power base (1116) for respectively extending into the battery compartment (111c) and the control closing compartment (111d); One end of the battery compartment (111c) facing away from the control compartment (111d) extends to the end of the upper crossbeam and forms an opening.

11. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The lower body of the structure (12) further includes a rear fork (124); One end of the rear fork (124) is rotatably connected to the lower end of the lower support member (122); The lower support member (122) is provided with an upper mounting seat (1222), and the rear fork is provided with a lower mounting seat (1241). The upper mounting seat (1222) and the lower mounting seat (1241) are used for installing a shock absorber.

12. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The lower body of the structure (12) further includes a rear fork (124); One end of the rear fork (124) is rotatably connected to the lower end of the lower support member (122); The rear fork (124) is provided with a rear fork piece (1242) at one end away from the lower support member (122); A lower mounting seat (1241) is provided on the rear fork piece (1242), an upper mounting seat (1222) is provided on the lower crossbeam (121), and the upper mounting seat (1222) and the lower mounting seat (1241) are used for installing a shock absorber.

13. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The upper crossbeam (111) is provided with a wiring groove (1113) extending along a first direction and a first wiring hole communicating with the wiring groove (1113); The lower support member (122) is provided with a second wiring hole (1221); A lamp frame plate (1115) extending toward the lower beam (121) is also fixed on the upper beam (111).

14. The telescopic frame structure according to any one of claims 1 to 4, characterized in that: The upper crossbeam (111) is a square tube or a round tube with a single-layer or double-layer structure; The lower crossbeam (121) and the upper crossbeam (111) are connected in a mutually interlocking movable manner or in a mutually fitting movable manner.

15. A telescopic two-wheeled vehicle, including an electric bicycle and a non-electric bicycle, characterized in that: The invention comprises the telescopic frame structure according to any one of claims 1 to 14.

Images