CN211280854U

CN211280854U - Rear-pulling bicycle frame

Info

Publication number: CN211280854U
Application number: CN201922094897.XU
Authority: CN
Inventors: 叶燕青; 叶俊; 汤佳星; 郭宾; 朱运高; 叶烔
Original assignee: Taicang Yuanren Metal Technology Co ltd
Current assignee: Taicang Yuanren Metal Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-18
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a rear-pulling bicycle frame, which comprises a mounting bracket, a fixed column, a fastening bolt and a fixed unit; installing a support: the mounting bracket is arranged in a shape like a Chinese character ri, two vertical rods of the mounting bracket are arranged in a bent shape, a fixing column is fixedly connected to the middle position of a lower rod of the mounting bracket, a threaded hole is formed in the middle of the fixing column, and the fastening bolt is in threaded connection with the threaded hole formed in the fixing column; a fixing unit: the fixed unit contains mount, loading board, positioning groove, fixed block, installation piece, movable block, first tightening nut, the mount is the setting of L type, and the upper end of this mount passes through bolt fixed connection at the surface of installing support intermediate lever, loading board fixed connection is at the upper surface of mount lower part diaphragm, this back towed bicycle frame, and the structure is simple and convenient, low in manufacturing cost, and is not fragile, and the maintenance degree of difficulty is low, long service life, easy popularization.

Description

Rear-pulling bicycle frame

Technical Field

The utility model relates to an automobile articles for use technical field specifically is a back towed bicycle frame.

Background

With the improvement of the social and economic level, the popularity of the household automobile is greatly increased. When traveling or doing sports, many families often install luggage racks on automobiles for carrying some luggage, sports equipment and the like; or a bicycle frame is arranged on the bicycle for carrying the bicycle. Vehicle-mounted bicycle frames generally include a rear-towed bicycle frame and a roof-mounted bicycle frame; the structure of the existing rear-pulling type bicycle frame generally comprises a connecting part connected with the tail part of an automobile, a frame main body arranged on the connecting part and a bracket used for fixing the bicycle. According to application number 201720679114.2, the rear-pulling type bicycle frame comprises a connecting rod connected with the tail of an automobile mounting, a stand column and a bracket connected to the top of the stand column and used for fixing a bicycle, wherein the lower end of the stand column is rotatably connected with the connecting rod, a rotating locking mechanism is arranged between the lower part of the stand column and the connecting rod and comprises a locking block movably connected to the lower part of the stand column, at least two clamping positions distributed along the rotation direction of the stand column and used for clamping the locking block are arranged on the connecting rod, and the side wall between the clamping positions is in arc transition; the locking block is connected with an elastic piece which enables the locking block to reset; the frame body on be equipped with an unlocking ware, the unlocking ware pass through the connecting piece and be connected with the locking piece. The rear-pulling type bicycle frame has the advantages of complex structure, high manufacturing cost, easy damage, high maintenance difficulty, short service life and difficult popularization.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a back towed bicycle frame, the structure is simple and convenient, low in manufacturing cost, and is not fragile, and the maintenance degree of difficulty is low, and long service life promotes easily, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a rear-pulling bicycle frame comprises a mounting bracket, a fixing column, a fastening bolt and a fixing unit;

installing a support: the mounting bracket is arranged in a shape like a Chinese character ri, two vertical rods of the mounting bracket are arranged in a bent shape, a fixing column is fixedly connected to the middle position of a lower rod of the mounting bracket, a threaded hole is formed in the middle of the fixing column, and the fastening bolt is in threaded connection with the threaded hole formed in the fixing column;

a fixing unit: the fixed unit contains mount, loading board, positioning groove, fixed block, installation piece, movable block, first tightening nut, the mount is the setting of L type, and the upper end of this mount passes through the surface of bolt fixed connection at the installing support intermediate lever, loading board fixed connection is at the upper surface of mount lower part diaphragm, two positioning groove have been seted up to the intermediate position of loading board upper surface, fixed block fixed connection is at the upper surface of loading board left side positioning groove next door position, installation piece fixed connection is close to the upper surface on right side at the loading board left end, first tightening nut threaded connection has been seted up at the mounting block intermediate position in the screw hole, the intermediate position of movable block surface and the tip rotation of first tightening nut link together, the movable block is connected with the fixed block cooperation. The mount in the fixed unit provides the position of installation for the loading board, and the positioning groove who sets up on the loading board can be put into the front and back wheel of bicycle, is convenient for fix a position, and then can drive the movable block through rotating the first tightening nut on the installation piece and move forward or backward, and further front wheel to the bicycle restricts, has improved fastening degree.

Furthermore, the fixing device also comprises an upper fixing head and a fixing rod, wherein the upper fixing head is fixedly connected to the outer surface of the front side of the left end of the mounting bracket, and one end of the fixing rod is rotatably connected with the upper fixing head through a pin shaft. The fastening head is provided with a fixing rod which is convenient to connect, and meanwhile, the fixing rod can move up and down in a vertical plane by adopting a rotating shaft connection mode between the fastening head and the fixing rod.

Further, still include fastening head, locating pin and spacing railing down, spacing railing fixed connection is at the upper surface of loading board front side, the last fixed surface that corresponds the department with last fastening head in spacing railing left side has been connected with fastening head down, the other end of dead lever passes through the locating pin and is in the same place with fastening head swing joint down. Spacing railing can prevent dropping of bicycle on the one hand, and the lower fastening head of on the other hand upper end can be fixed the other end of dead lever through the locating pin, pulls out the locating pin when needs are opened, and convenient and fast has higher practicality.

Further, still include taut unit, taut unit contains solid fixed ring, plastics stretching strap, tooth's socket and the second bolt of tightening, the fixed surface that cup joints at the dead lever intermediate position of fixed ring, solid fixed ring's one side fixedly connected with mounting panel, the one end fixed connection of plastics stretching strap is at the lower surface of mounting panel right-hand member, the other end of plastics stretching strap passes the left logical groove of mounting panel, and the tooth's socket has been seted up to the expansion end lower surface of this plastics stretching strap, the second bolt of tightening rotates the left end of connecting at the mounting panel, and this second bolt of tightening is connected with the tooth's socket meshing. The fixed ring in the tensioning unit provides a carrier for installation and fixation, and the second tightening bolt can be rotated to drive the tooth grooves of the plastic pull belts to move upwards or downwards, so that the bicycle handle bar is fastened.

Furthermore, the bearing plate further comprises two limiting blocks, and the two limiting blocks are fixedly connected to the upper surface of the bearing plate at the positions corresponding to the two sides of the positioning groove respectively. The installation of stopper is convenient for form the protection to the rear wheel, also avoids jolting the emergence that the highway section caused not hard up obscission phenomenon.

Compared with the prior art, the beneficial effects of the utility model are that: this back towed bicycle frame has following benefit:

1. this back towed bicycle frame adopts comparatively simple mechanical component design, has realized comparatively practical function, can provide stable position for holding of bicycle, has solved the big difficult problem that is not convenient for domestic automobile delivery of present bicycle volume.

2. The rear-towed bicycle frame is made of common materials, reduces the manufacturing cost, has the advantage of lower price under the condition of the same quality, and has better natural advantages in increasingly severe market competition.

3. This back towed bicycle frame, convenient to use, the dismouting of being convenient for has avoided adopting a large amount of connecting rods and pivot mechanism to damage easily and the shortcoming of dismouting difficulty, has reduced consuming time in the driver installation, is accepted by people more easily.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side view of the present invention.

In the figure: the device comprises a mounting bracket 1, a fixing column 2, a fastening bolt 3, a fixing unit 4, a fixing frame 41, a bearing plate 42, a positioning groove 43, a fixing block 44, a mounting block 45, a movable block 46, a first tightening nut 47, a tightening head 5, a fixing rod 6, a tightening head 7, a positioning pin 8, a tightening unit 9, a fixing ring 91, a plastic drawstring 92, a tooth socket 93, a second tightening bolt 94, a limiting block 10 and a limiting rail 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a rear-pulling bicycle frame comprises a mounting bracket 1, a fixing column 2, a fastening bolt 3 and a fixing unit 4;

mounting the bracket 1: the mounting bracket 1 is arranged in a shape like a Chinese character ri, two vertical rods of the mounting bracket 1 are arranged in a bent shape, a fixed column 2 is fixedly connected to the middle position of a lower rod of the mounting bracket 1, a threaded hole is formed in the middle of the fixed column 2, and a fastening bolt 3 is in threaded connection with the threaded hole formed in the fixed column 2; the fixing device further comprises an upper fixing head 5 and a fixing rod 6, wherein the upper fixing head 5 is fixedly connected to the outer surface of the front side of the left end of the mounting bracket 1, and one end of the fixing rod 6 is rotatably connected with the upper fixing head 5 through a pin shaft. The fixing head 5 is convenient for the connection of the fixing rod 6, and meanwhile, the fixing rod 6 can move up and down in the vertical plane at the fixing head 5 by adopting a rotating shaft connection mode. Still include taut unit 9, taut unit 9 contains solid fixed ring 91, plastics stretching strap 92, bolt 94 is tightened to tooth's socket 93 and second, gu fixed cover of fixed ring 91 connects the surface at the 6 intermediate position of dead lever, gu one side fixedly connected with mounting panel of fixed ring 91, the one end fixed connection of plastics stretching strap 92 is at the lower surface of mounting panel right-hand member, the left logical groove of mounting panel is passed to the other end of plastics stretching strap 92, and tooth's socket 93 has been seted up to the expansion end lower surface of this plastics stretching strap 92, bolt 94 is tightened to the second rotates the left end of connecting at the mounting panel, and bolt 94 is tightened to this second is connected. The fixing ring 91 in the tightening unit 9 provides a carrier for mounting and fixing, and the second tightening bolt 94 can drive the tooth grooves 93 of the plastic pull belts 92 to move upwards or downwards by rotating the second tightening bolt 94, so as to fasten the bicycle handle.

The fixing unit 4: the fixing unit 4 comprises a fixing frame 41, a bearing plate 42, a positioning groove 43, a fixing block 44, a mounting block 45, a movable block 46 and a first tightening nut 47, wherein the fixing frame 41 is arranged in an L shape, and the upper end of this mount 41 passes through the surface of bolt fixed connection at the intermediate lever of installing support 1, loading board 42 fixed connection is at the upper surface of mount 41 lower part diaphragm, two positioning groove 43 have been seted up to the intermediate position of loading board 42 upper surface, fixed block 44 fixed connection is at the upper surface of loading board 42 left side positioning groove 43 next door position, still include fastening head 7 down, locating pin 8 and spacing railing 11, spacing railing 11 fixed connection is at the upper surface of loading board 42 front side, the upper surface of the department that corresponds with last fastening head 5 in spacing railing 11 left side has fixedly connected with fastening head 7 down, the other end of dead lever 6 passes through locating pin 8 and fastening head 7 swing joint down and is in the same place. Spacing railing 11 can prevent dropping of bicycle on the one hand, and the lower fastening head 7 of on the other hand upper end can be fixed the other end of dead lever 6 through locating pin 8, pulls out locating pin 8 when needs are opened, and convenient and fast has higher practicality. The mounting block 45 is fixedly connected to the upper surface of the left end of the bearing plate 42 close to the right side, the first tightening nut 47 is in threaded connection with the threaded hole formed in the middle of the mounting block 45, the middle of the outer surface of the movable block 46 is in rotating connection with the end of the first tightening nut 47, and the movable block 46 is in matching connection with the fixed block 44. The fixing frame 41 in the fixing unit 4 provides a mounting position for the bearing plate 42, and further includes two limiting blocks 10, the two limiting blocks 10 are disposed, and the two limiting blocks 10 are respectively and fixedly connected to the upper surface of the bearing plate 42 corresponding to the two sides of the positioning groove 43. The installation of stopper 10 is convenient for form the protection to the rear wheel, also avoids jolting the emergence that the highway section caused not hard up obscission phenomenon. The positioning groove 43 formed in the bearing plate 42 can place the front wheel and the rear wheel of the bicycle in a convenient positioning manner, and then the movable block 46 can be driven to move forwards or backwards by rotating the first tightening nut 47 on the mounting block 45, so that the front wheel of the bicycle is further limited, and the fastening degree is improved.

When in use:

the mount 41 in the fixed unit 4 provides the position of installation for the loading board 42, and the positioning groove 43 of seting up on the loading board 42 can put into the front and back wheel of bicycle, is convenient for fix a position, and then can drive the movable block 46 and move forward or backward through rotating the first tightening nut 47 on the installation piece 45, and further the front wheel to the bicycle limits, has improved fastening degree. The fixing head 5 is convenient for the connection of the fixing rod 6, and meanwhile, the fixing rod 6 can move up and down in the vertical plane at the fixing head 5 by adopting a rotating shaft connection mode. Spacing railing 11 can prevent dropping of bicycle on the one hand, and the lower fastening head 7 of on the other hand upper end can be fixed the other end of dead lever 6 through locating pin 8, pulls out locating pin 8 when needs are opened, and convenient and fast has higher practicality. The fixing ring 91 in the tightening unit 9 provides a carrier for mounting and fixing, and the second tightening bolt 94 can drive the tooth grooves 93 of the plastic pull belts 92 to move upwards or downwards by rotating the second tightening bolt 94, so as to fasten the bicycle handle. The installation of stopper 10 is convenient for form the protection to the rear wheel, also avoids jolting the emergence that the highway section caused not hard up obscission phenomenon.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rear-towed bicycle frame which characterized in that: the device comprises a mounting bracket (1), a fixing column (2), a fastening bolt (3) and a fixing unit (4);

mounting bracket (1): the mounting bracket (1) is integrally arranged in a shape like the Chinese character 'ri', two vertical rods of the mounting bracket (1) are arranged in a bent shape, a fixing column (2) is fixedly connected to the middle position of a lower rod of the mounting bracket (1), a threaded hole is formed in the middle of the fixing column (2), and the fastening bolt (3) is in threaded connection with the threaded hole formed in the fixing column (2);

fixing unit (4): the fixing unit (4) comprises a fixing frame (41), a bearing plate (42), a positioning groove (43), a fixing block (44), a mounting block (45), a movable block (46) and a first tightening nut (47), wherein the fixing frame (41) is arranged in an L shape, the upper end of the fixing frame (41) is fixedly connected to the outer surface of a middle rod of the mounting bracket (1) through a bolt, the bearing plate (42) is fixedly connected to the upper surface of a transverse plate at the lower part of the fixing frame (41), two positioning grooves (43) are formed in the middle position of the upper surface of the bearing plate (42), the fixing block (44) is fixedly connected to the upper surface of a corresponding position beside the left positioning groove (43) of the bearing plate (42), the mounting block (45) is fixedly connected to the upper surface of the left end of the bearing plate (42) close to the right side, and the first tightening nut (47) is in a threaded hole formed in the, the middle position of the outer surface of the movable block (46) is rotatably connected with the end part of the first tightening nut (47), and the movable block (46) is arranged corresponding to the fixed block (44).

2. A rear-towed bicycle frame according to claim 1, wherein: the fixing device is characterized by further comprising an upper fixing head (5) and a fixing rod (6), wherein the upper fixing head (5) is fixedly connected to the outer surface of the front side of the left end of the mounting bracket (1), and one end of the fixing rod (6) is rotatably connected to the upper fixing head (5) through a pin shaft.

3. A rear-towed bicycle frame according to claim 2, wherein: still including fastening head (7), locating pin (8) and spacing railing (11) down, spacing railing (11) fixed connection is at the upper surface of loading board (42) front side, the last fixed surface that corresponds department is connected with down fastening head (7) on the left of spacing railing (11) and last fastening head (5), the other end of dead lever (6) passes through locating pin (8) and is in the same place with fastening head (7) swing joint down.

4. A rear-towed bicycle frame according to claim 2, wherein: still include taut unit (9), taut unit (9) contain solid fixed ring (91), plastics stretching strap (92), tooth's socket (93) and second tightening bolt (94), gu fixed the cup joint at the surface of dead lever (6) intermediate position of fixed ring (91), one side fixedly connected with mounting panel of solid fixed ring (91), the one end fixed connection of plastics stretching strap (92) is at the lower surface of mounting panel right-hand member, another expansion end of plastics stretching strap (92) passes the left logical groove of mounting panel, and tooth's socket (93) have been seted up to the expansion end lower surface of this plastics stretching strap (92), second tightening bolt (94) rotate the left end of connection at the mounting panel, annular tooth's socket has been seted up to the intermediate position of second tightening bolt (94), and the annular tooth's socket and tooth's socket (93) meshing of this second tightening bolt (94) are connected.

5. A rear-towed bicycle frame according to claim 1, wherein: the positioning device is characterized by further comprising two limiting blocks (10), wherein the two limiting blocks (10) are arranged, and the two limiting blocks (10) are fixedly connected to the upper surface of the corresponding bearing plate (42) on two sides of the positioning groove (43) respectively.