CN210707751U - Parallel vehicle with height-adjustable frame - Google Patents

Abstract

The utility model discloses a frame height-adjustable's flatcar, including front wheel, rear wheel and frame, be equipped with the fore-stock on the front wheel, the fore-stock is connected in the front end of frame, the rear wheel is fixed in the rear end of frame, be equipped with the saddle on the frame, the rear end of frame still is equipped with the rear wheel support frame that is used for the activity to prop up the rear wheel, rotate through a rotating device and connect in order to realize rotatory frame between frame and the fore-stock; the rotating device comprises a connecting sleeve for connecting the frame and the front support, a spring positioning bolt for positioning the frame and a locking member for locking the frame and the front support, and positioning holes matched with the spring positioning bolt to penetrate are formed in the frame, the front support and the connecting sleeve; the utility model discloses a thereby the upset of frame realizes the regulation of frame height to the rear wheel support frame adopts the structure that both corotation supported the rear wheel and also can overturn and support the rear wheel, has improved the utility model discloses an applicability and commonality.

Description

Parallel vehicle with height-adjustable frame

Technical Field

The utility model relates to a parallel car field, in particular to frame height-adjustable's parallel car.

Background

Flatcars, usually children, are used to learn balance forces. After the child rides the bicycle, the child takes the ground as the power of the pedal, which is beneficial to developing the brain and exercising the body of the child. However, the height of the frame of the traditional parallel vehicle can not be adjusted, the function of the rear wheel support frame is single, the direction for supporting the rear wheel is only one, and the applicability and the universality are not strong. Children with different heights have different requirements on the height of the parallel vehicle, and the height of the parallel vehicle is not matched with that of the parallel vehicle, so that the children can feel uncomfortable during riding on the one hand, and the children also bring economic burden to families on the other hand.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a frame height-adjustable's flatcar to solve the not enough that exists among the prior art.

In order to solve the technical problem, the utility model discloses a technical scheme does: a frame height-adjustable parallel vehicle comprises a front wheel, a rear wheel and a frame, wherein the front wheel is provided with a front support, the front support is connected to the front end of the frame, the rear wheel is fixed to the rear end of the frame, the frame is provided with a seat, the rear end of the frame is also provided with a rear wheel support frame for movably supporting the rear wheel, and the frame and the front support are rotatably connected through a rotating device to realize rotating the frame; the rotating device comprises a connecting sleeve, a spring positioning bolt and a locking component, the connecting sleeve is used for connecting the frame and the front support, the spring positioning bolt is used for positioning the frame, the locking component is used for locking the frame and the front support, the front support is sleeved in the connecting sleeve, the connecting sleeve is sleeved in the frame, the spring positioning bolt is arranged on the front support, the locking component is movably sleeved on the frame and can be tightly pressed on the outer wall of the front support, and positioning holes matched with the spring positioning bolt to penetrate are jointly formed in the frame, the front support and the connecting sleeve.

As an improvement, the frame includes first frame section, second frame section and the third frame section that connects gradually, the right-hand member of first frame section and the left end bending connection of second frame section, the right-hand member of second frame section and the left end bending connection of third frame section, the contained angle between first frame section and the second frame section is 147, the contained angle between second frame section and the third frame section is 127, the left end of first frame section is overlapped in the connecting sleeve, the locating hole is located on the outer wall of first frame section.

As an improvement, the outer wall of the third frame section is provided with a mounting hole for mounting a saddle in a matching way.

As an improvement, the locking member comprises a clamping ring for jointly clamping the front bracket, the connecting sleeve and the first frame segment, a lock catch for locking or unlocking the clamping ring and a fastening screw for pressing on the outer wall of the front bracket, wherein the lock catch is rotatably connected to the opening of the clamping ring through the connecting screw, and the fastening screw penetrates through the clamping ring, the connecting sleeve and the first frame segment in sequence and then presses on the front bracket.

As an improvement, a first screw groove for passing a fastening screw is formed in the outer wall of the first frame section, a first telescopic groove is further formed in the outer wall of the first frame section, and the first telescopic groove and the first screw groove are symmetrically arranged.

As an improvement, a second screw groove butted with the first screw groove and a second telescopic groove butted with the first telescopic groove are arranged on the connecting sleeve.

As an improvement, an elastic spring is arranged in the front support, the spring positioning bolts are arranged at two ends of the elastic spring, and two ends of the elastic spring penetrate through the positioning holes simultaneously.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a thereby the upset of frame realizes the regulation of frame height to the rear wheel support frame adopts the structure that both can corotation support the rear wheel and also can overturn and support the rear wheel, has improved the utility model discloses an adaptability and commonality, and the people of different heights can carry out the altitude mixture control of saddle as required, and is swift convenient.

Drawings

Fig. 1 is a schematic perspective view of the present invention at the lowest height.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural view of the vehicle frame according to the present invention.

Fig. 4 is a schematic view of the present invention with respect to another angle of the frame.

Fig. 5 is a schematic structural view of the locking member of the present invention.

Fig. 6 is a schematic structural view of the present invention relating to a connecting sleeve.

Fig. 7 is a schematic diagram of the structure of the elastic spring and the spring positioning pin of the present invention.

Fig. 8 is an exploded view of the rear wheel support device according to the present invention.

Fig. 9 is a schematic structural diagram of the lock plate of the present invention.

Fig. 10 is a schematic structural view of the rear wheel support of the present invention.

Fig. 11 is a schematic structural diagram of the latch assembly of the present invention.

Fig. 12 is a schematic view of the lock assembly viewed from the right.

Fig. 13 is a schematic top view of fig. 1.

Fig. 14 is a schematic perspective view of the present invention at the highest height.

Fig. 15 is a schematic top view of fig. 14.

In the figure: the front wheel support device comprises a front wheel 1, a rear wheel 2, a frame 3, a front support frame 4, a rear wheel support device 5, a rotating device 6, a positioning hole 7, a brake 8, a mounting shaft 20, a first frame section 30, a second frame section 31, a third frame section 32, a concave hole 33, an elastic spring 40, a rear wheel support frame 50, a locking plate 51, a locking assembly 52, a connecting sleeve 60, a spring positioning bolt 61, a locking member 62, a first screw groove 300, a first telescopic groove 301, a mounting hole 320, a connecting hole 500, a first through hole 501, a second through hole 502, an upper locking hole 510, a lower locking hole 511, a positioning plate 512, a spring plate locking strip 520, a lock cylinder 521, an unlocking rod 522, a second screw groove 600, a second telescopic groove 601, a clamping ring 620, a locking buckle 621, a fastening screw 622, a connecting screw 623, a length H and a length H.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a flatcar with adjustable frame height comprises a front wheel 1, a rear wheel 2 and a frame 3, wherein a front support 4 is arranged on the front wheel 1, the front support 4 is movably connected to the front end of the frame 3, a handle is arranged on the front support 4 and slidably adjusted on the front support 4, the rear wheel 2 is fixed at the rear end of the frame 3, a seat is arranged on the frame 3 and slidably adjusted on the frame 3, a brake 8 is further arranged at the rear end of the frame 3, and a controller for controlling the brake 8 is further arranged on the handle, which should be understood by those skilled in the art.

As shown in fig. 2, 3 and 4, the frame 3 and the front frame 4 are rotatably connected through a rotating device 6 to realize rotating the frame 3, and in order to match that the frame 3 can still be supported after rotating, the rear end of the frame 3 is further provided with a rear wheel supporting device 5 for movably supporting the rear wheel 2, and the rear wheel supporting device 5 can support the rear wheel 2 in a turnover manner, so that the frame 3 after turnover can still be supported by the same rear wheel supporting device 5 to improve the universality of the rear wheel supporting device 5. Specifically, the frame 3 includes a first frame section 30, a second frame section 31 and a third frame section 32 connected in sequence, a right end of the first frame section 30 is connected with a left end of the second frame section 31 in a bending manner, a right end of the second frame section 31 is connected with a left end of the third frame section 32 in a bending manner, since the second frame section 31 is connected with the first frame section 30 in a bending manner obliquely downward, so that the second frame section 30 is extended oppositely when the first frame section 30 is turned over, that is, the second frame section 31 is connected with the first frame section 30 in a bending manner obliquely upward after the first frame section 30 is turned over, fig. 1 is a state diagram when the frame 3 is at a lowest height, fig. 14 is a state diagram when the frame 3 is at a highest height, so that a saddle mounted on the third frame section 32 can adjust its original height following a different extending direction of the second frame section 31, realize the regulation of 3 two kinds of different original heights of frame to the child in the stage of adapting to more different ages uses, has improved the utility model discloses an applicability and commonality. In addition, the angle between the first frame section 30 and the second frame section 31 is 147 °, and the angle between the second frame section 31 and the third frame section 32 is 127 °, but not limited thereto, and the angles between the first frame section 30 and the second frame section 31, and the angles between the second frame section 31 and the third frame section 32 may be set to other angles according to actual production requirements.

As shown in fig. 1, 2, 5, 6, 7 and 14, the rotating device 6 includes a connecting sleeve 60 for connecting the first frame segment 30 and the front frame 4, a spring positioning bolt 61 for positioning the first frame segment 30, and a locking member 62 for locking the first frame segment 30 and the front frame 4, the front frame 4 is sleeved in the connecting sleeve 60, and the connecting sleeve 60 is sleeved in the left end of the first frame segment 30. The spring positioning bolt 61 is elastically arranged on the front support 4, correspondingly, the first frame section 30, the front support 4 and the connecting sleeve 60 are jointly provided with a positioning hole 7 which is matched with the spring positioning bolt 61 to penetrate through, and the front support 4 and the first frame section 30 can be fixedly connected through the matching of the spring positioning bolt 61 and the positioning hole 7 to prevent the two from being separated. In this technical solution, the inside of the front bracket 4 is provided with an elastic spring 40, the spring positioning bolts 61 are fixedly connected to two ends of the elastic spring 40, and two ends of the elastic spring 40 also penetrate through the positioning holes 7. The spring positioning bolt 61 can freely extend and contract in the positioning hole 7 under the elastic force of the elastic spring 40, and when the frame 3 is to be turned, the spring positioning bolt 61 is first pressed inward, and the spring positioning bolt 61 is retracted inward and disengaged from the positioning hole 7 of the first frame section 30, the elastic spring 40 is compressed to store elastic potential energy, and at this time, by rotating the first frame section 30 to integrally rotate the frame 3, the spring positioning pin 61 is pressed against the inner wall of the first frame section 30 by the elastic force of the elastic spring 40, when the first frame segment 30 rotates horizontally by 180 °, the positioning hole 7 of the first frame segment 30 aligns with the spring positioning pin 61 again, and the elastic spring 40 releases its elastic potential energy to push the spring positioning pin 61 to expand outward and make the spring positioning pin 61 extend out of the positioning hole 7 again, so as to realize the rotational connection between the first frame segment 30 and the front frame 4. In addition, the locking member 62 is movably sleeved on the first frame segment 30 and can be pressed against the outer wall of the front bracket 4, so that the purpose of locking the first frame segment 30 and the front bracket 4 is achieved. Specifically, the locking member 62 comprises a clamping ring 620 for clamping the front bracket 4, the connecting sleeve 60 and the first frame segment 30 together, a lock 621 for locking or unlocking the clamping ring 620 and a fastening screw 622 for pressing on the outer wall of the front bracket 4, wherein the lock 621 is rotatably connected to an opening of the clamping ring 620 through a connecting screw 623, the connecting screw 623 is transversely arranged at the opening of the clamping ring 620, and the clamping ring 620 is adjustably clamped or loosened through the cooperation of the connecting screw 623 and the lock 621, which will be understood by those skilled in the art. And fastening screw 622 then compresses tightly on fore-stock 4 after passing clamping ring 620, adapter sleeve 60, first frame section 30 from last down in proper order, and after clamping ring 620 presss from both sides tight first frame section 30, adapter sleeve 60 and fore-stock 4, through fastening screw 622 screw make first frame section 30 can be connected with fore-stock 4 firmly, further guarantee the utility model discloses an assembly compactness with improve the security performance.

Further, a first screw groove 300 for passing a fastening screw 622 is formed in an outer wall of the first frame section 30, a first telescopic groove 301 is further formed in the outer wall of the first frame section 30, and the first telescopic groove 301 and the first screw groove 300 are symmetrically arranged. The first telescopic groove 301 has the function that when the clamping ring 620 contracts and clamps, the first telescopic groove 301 contracts synchronously under the clamping action of the clamping ring 620, so that the first frame section 30 clamps the connecting sleeve 60 and the front bracket 4. Correspondingly, the connection sleeve 60 is provided with a second screw groove 600 abutting against the first screw groove 300 and a second telescopic groove 601 abutting against the first telescopic groove 301. The function of the second telescopic slot 601 is the same as that of the first telescopic slot 301, and will not be described in detail.

As shown in fig. 1, 8, 9, 10, 11 and 12, the rear wheel supporting device 5 includes a rotatable rear wheel supporting frame 50, a locking plate 51 for locking the rear wheel supporting frame 50, and a locking assembly 52 for locking or unlocking the rear wheel supporting frame 50, the locking plate 51 is fixed on the rear end of the frame 3, the rear wheel supporting frame 50 is simultaneously rotatably connected with the locking plate 51 and the third frame section 32, the locking plate 51 is provided with two upper locking holes 510 and two lower locking holes 511 which are both adapted to be locked with the locking assembly 52, and the two locking holes and the locking assembly 52 pass through the upper locking holes 510 and the lower locking holes 511. Specifically, the center of rear wheel 2 is equipped with installation axle 20, installation axle 20 is connected at third frame section 32, and rear wheel 2 passes through the bearing and is connected with installation axle 20 rotation. Be equipped with the connection shrinkage pool 33 that the adaptation is connected with installation axle 20 on the third frame section 32, third frame section 32 is connected with installation axle 20 through the cooperation of connecting shrinkage pool 33 and screw. The rear wheel support frame 50 is provided with connecting holes 500 adapted to the connection of the mounting shaft 20, the connecting holes 500 are symmetrically arranged at two ends of the rear wheel support frame 50, and the mounting shaft 20 is adapted to be internally sleeved in the two connecting holes 500 so as to realize that the rear wheel support frame 50 can rotate by taking the mounting shaft 20 as an axis.

Further, the locking assembly 52 includes a spring locking bar 520, a lock cylinder 521 adapted to be locked with the upper lock hole 510 or the lower lock hole 511, and an unlocking lever 522 for driving the lock cylinder 521 to unlock, the bottom end of the spring locking bar 520 is rotatably connected to the rear wheel support frame 50, the lock cylinder 521 is fixedly connected to the top end of the spring locking bar 520, and the unlocking lever 522 is fixedly connected to the middle of the spring locking bar 520, in other words, when the spring locking bar 520 rotates, the lock cylinder 521 and the unlocking lever 522 also rotate synchronously, so that the switching between the locking state and the unlocking state can be realized, and it should be understood by those skilled in the art. The rear wheel support frame 50 is provided with a first through hole 501 for the adaptive lock cylinder 521 to pass through and a second through hole 502 for the adaptive lock release rod 522 to pass through, the first through hole 501 is located above the second through hole 502, the first through hole 501 can be respectively butted with the upper lock hole 510 or the lower lock hole 511, and the connection hole 500 is located above the first through hole 501. Specifically, the extending direction of the first through hole 501 is different from the extending direction of the second through hole 502, when the frame 3 is turned over, since the third frame section 32 is disposed obliquely downward, the first through hole 501 is also disposed corresponding to the inclination of the third frame section 32, so that the rear wheel support frame 50 can vertically support the rear wheel 2 after the frame 3 is turned over. In addition, the length H of the unlocking rod 522 is greater than the length H of the lock cylinder 521, so that the condition that the unlocking rod 522 cannot unlock the lock cylinder 521 is prevented.

Furthermore, the upper end and the lower end of the lock plate 51 are symmetrically provided with positioning plates 512 for positioning and connecting the frame 3, so as to prevent the lock plate 51 from falling off or deviating accidentally.

When the frame 3 is at the lowest height, i.e. as shown in fig. 1 and 13, the third frame section 32 is horizontally disposed, the brake 8 is disposed at the right side of the rear wheel 2, and the locking plate 51 and the locking assembly 52 are both disposed at the left side of the rear wheel 2. The rear wheel support frame 50 is in an initial state when supporting the rear wheel 2, the lock cylinder 521 is locked in the lower lock hole 511 at the moment, the unlocking rod 522 is also locked in the second through hole 502, when the rear wheel support frame 50 needs to be unlocked, external force is applied to the unlocking rod 522, the unlocking rod 522 moves backwards and drives the elastic sheet lock strip 520 to move in the direction away from the rear wheel support frame 50, the unlocking rod 522 is partially separated from the second through hole 502 at the moment, because the lock cylinder 521 is arranged at the top end of the elastic sheet lock strip 520 and elasticity of the elastic sheet lock strip 520, the lock cylinder 521 also moves along with the elastic sheet lock strip 520, and the lock cylinder 521 is separated from the lower lock hole 511. Then, the rear wheel support 50 is pushed backward, so that the rear wheel support 50 rotates counterclockwise around the mounting shaft 20 as a center, the movement of the rear wheel support 50 drives the locking assembly 52 to move, and at this time, the lock cylinder 521 is in sliding contact with the end surface of the locking plate 51. When lock core 521 rotated to the position department of last lockhole 510, because shell fragment locking strip 520's elastic action, shell fragment locking strip 520 promoted lock core 521 toward the direction removal that runs through last lockhole 510 and make lock core 521 lock in last lockhole 510, rear wheel support frame 50 was upwards propped up this moment, rear wheel 2 can with ground contact, this moment the utility model discloses be in the state that can ride. When the rear wheel 2 needs to be supported after riding, the rear wheel 2 can be supported by the rear wheel supporting frame 50 only by the reverse operation of the process, and the detailed description is omitted. In addition, when the frame 3 is at the highest height, i.e., as shown in fig. 14 and 15, it is different from that at the lowest height in that the third frame section 32 is disposed diagonally downward, the brake 8 is disposed on the left side of the rear wheel 2, and the locking plate 51 and the locking assembly 52 are both disposed on the right side of the rear wheel 2, and the locking or unlocking process thereof is the same as the above process, and will not be described again.

To sum up, the utility model discloses a thereby the upset of frame 3 realizes the regulation of frame 3 height to rear wheel support frame 50 adopts the structure that both corotation supported rear wheel 2 and also can overturn and support rear wheel 2, has improved the utility model discloses an applicability and commonality, and the people of different heights can carry out the altitude mixture control of saddle as required, and is swift convenient.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (7)

1. The utility model provides a frame height-adjustable's flatcar which characterized in that: the bicycle comprises a front wheel (1), a rear wheel (2) and a frame (3), wherein a front support (4) is arranged on the front wheel (1), the front support (4) is connected to the front end of the frame (3), the rear wheel (2) is fixed to the rear end of the frame (3), a saddle is arranged on the frame (3), a rear wheel support frame (50) for movably supporting the rear wheel (2) is further arranged at the rear end of the frame (3), and the frame (3) and the front support (4) are rotatably connected through a rotating device (6) to realize rotation of the frame (3);

the rotating device (6) comprises a connecting sleeve (60) used for connecting the frame (3) and the front support (4), a spring positioning bolt (61) used for positioning the frame (3) and a locking member (62) used for locking the frame (3) and the front support (4), the front support (4) is sleeved in the connecting sleeve (60), the connecting sleeve (60) is sleeved in the frame (3), the spring positioning bolt (61) is arranged on the front support (4), the locking member (62) is movably sleeved on the frame (3) and can be pressed on the outer wall of the front support (4), and the frame (3), the front support (4) and the connecting sleeve (60) are jointly provided with a positioning hole (7) matched with the spring positioning bolt (61) to penetrate through.

2. The frame height-adjustable parallel wagon of claim 1, wherein: the frame (3) is including the first frame section (30), second frame section (31) and the third frame section (32) that connect gradually, the right-hand member of first frame section (30) and the left end bending connection of second frame section (31), the right-hand member of second frame section (31) and the left end bending connection of third frame section (32), contained angle between first frame section (30) and second frame section (31) is 147, contained angle between second frame section (31) and third frame section (32) is 127, the left end of first frame section (30) is overlapped in connecting sleeve (60), locating hole (7) are located on the outer wall of first frame section (30).

3. The frame height-adjustable parallel wagon of claim 2, wherein: and the outer wall of the third frame section (32) is provided with a mounting hole (320) for mounting a saddle in a matching way.

4. The frame height-adjustable parallel wagon of claim 2, wherein: the locking member (62) comprises a clamping ring (620) used for clamping the front support (4), the connecting sleeve (60) and the first frame section (30) together, a lock catch (621) used for locking or unlocking the clamping ring (620) and a fastening screw (622) used for pressing on the outer wall of the front support (4), the lock catch (621) is rotatably connected to an opening of the clamping ring (620) through a connecting screw (623), and the fastening screw (622) penetrates through the clamping ring (620), the connecting sleeve (60) and the first frame section (30) in sequence and then presses on the front support (4).

5. The frame height adjustable parallel wagon of claim 4, wherein: the outer wall of the first frame section (30) is provided with a first screw groove (300) for a fastening screw (622) to pass through, the outer wall of the first frame section (30) is further provided with a first telescopic groove (301), and the first telescopic groove (301) and the first screw groove (300) are symmetrically arranged.

6. The frame height adjustable parallel wagon of claim 5, wherein: the connecting sleeve (60) is provided with a second screw groove (600) butted with the first screw groove (300) and a second telescopic groove (601) butted with the first telescopic groove (301).

7. The frame height adjustable parallel vehicle according to any one of claims 1 to 6, characterized in that: the spring positioning device is characterized in that an elastic spring (40) is arranged in the front support (4), the spring positioning bolts (61) are arranged at two ends of the elastic spring (40), and two ends of the elastic spring (40) penetrate through the positioning holes (7) simultaneously.

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