Crawler device for baby carriage with angle limiting structure

Abstract

The invention discloses a caterpillar device with angle limiting structure for baby carriage, which comprises a caterpillar main body, a motor main body and an angle limiting sheet. The rotating shaft of the motor main body drives the rotation of the driving wheel in the caterpillar main body, and drives the caterpillar main body to work. The side surface of the caterpillar main body is attached to the angle limiting sheet fixedly connected with the motor main body. The arc track is arranged on the angle limiting sheet, and the limiting protrusion is arranged on the side surface of the caterpillar main body and is embedded in the arc track to limit the rotation angle of the caterpillar main body. The caterpillar device has the advantages that the limiting protrusion on the outer side of the caterpillar main body is limited by the arc track in the angle limiting sheet, so that the caterpillar main body cannot rotate at any angle, and the collision and damage of the caterpillar main body to the vehicle are reduced.

Description

Technical Field

[0001] The present invention relates to a crawler device with an angle limiting structure used in a baby carriage and capable of limiting the rotation of the crawler device. Background Art

[0002] With the rapid development of modern society and science and technology, tracked vehicles are increasingly being used in various complex environments, especially in hazardous environment monitoring, unknown area exploration, planetary exploration, rescue search, bomb disposal and other fields. Tracked vehicles can replace workers in performing dangerous tasks. Existing children's cars also use a variety of track devices.

[0003] The existing tracked vehicle includes a track device, which includes a driving wheel, a driven wheel, a load-bearing wheel and a track member. The driving wheel and the driven wheel are engaged with the track member, and the load-bearing wheel is located between the driving wheel and the driven wheel to support the track member.

[0004] However, the existing crawler device can shake 360 ​​degrees as a whole during walking and turning, which can easily cause the crawler to damage the vehicle. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a crawler device with an angle limiting structure that can limit the rotation of the crawler device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a crawler device with an angle limiting structure for a baby carriage, comprising a crawler body, a motor body and an angle limiting plate; the rotating shaft of the motor body drives the driving wheel in the crawler body to rotate, driving the crawler body to work, and the side of the crawler body fits the angle limiting plate fixedly connected to the motor body, the angle limiting plate is provided with an arc track, and the side of the crawler body is provided with a limiting protrusion, which is embedded in the arc track to limit the rotation angle of the crawler body.

[0007] Furthermore, a main wheel shaft passing through the center of the rotating shaft is provided on the motor body. The main wheel shaft passes through the track body and the angle limit plate, and is then connected to the angle limit plate through a nut.

[0008] Furthermore, the main wheel shaft passes through the outer side of the crawler body and a main shaft sleeve is sleeved thereon. A round hole is provided on the angle limit plate for the main wheel shaft to pass through and a nut knob is used at the end through which the main wheel shaft passes, so that the angle limit plate is fixed between the main shaft sleeve and the nut.

[0009] Furthermore, the track body includes: an outer limit plate, an inner limit plate, a track, a driving wheel and a driven wheel; the outer limit plate and the inner limit plate are isosceles triangle plates with corresponding shapes and rounded inner corners and outer corners, the outer limit plate and the inner limit plate are arranged in parallel, and a driving wheel and two driven wheels are provided between the corresponding three inner corner positions, one end of the driving wheel passes through the inner limit plate and is fixedly connected to the rotating shaft of the motor body, the two driven wheels are rotatably connected between the outer limit plate and the inner limit plate through the drive shaft, the driving wheel is located on the upper side of the two driven wheels, and the track is embedded between the outer limit plate and the inner limit plate and covers the driving wheel and the two driven wheels.

[0010] Furthermore, the rotating shaft of the motor body is provided with meshing teeth that mesh with one end of the gear mating part passing through the inner limit plate, and the other end of the gear mating part meshes with the driving wheel. The outer surface of the driving wheel is provided with a groove that matches the raised inner surface of the track, which is used to engage the track and drive the track to move. The outer surfaces of the two driven wheels are provided with grooves that match the raised inner surface of the track, which are used to be driven to rotate by the track, and the driving wheels are located at the top corners of the outer limit plate and the inner limit plate respectively.

[0011] Furthermore, a driven wheel is provided with an axial hole in the center, a bearing is provided in the hole, a short driving shaft passes through the center of the bearing, and both ends of the short driving shaft pass through a bottom corner of the outer limit plate and the inner limit plate respectively, and are threadedly connected to the nuts located on the outside of the outer limit plate and the inner limit plate. The inner sides of the outer limit plate and the inner limit plate are also provided with a shaft sleeve mounted on the short driving shaft.

[0012] Furthermore, a driven wheel is provided with an axial hole in the center, a bearing is provided in the hole, and a long driving shaft passes through the center of the bearing. The outer side of the other bottom corner of the outer limit plate and the inner limit plate is fixedly connected to one end of an L-shaped connecting plate respectively, one end of a fixed sleeve connecting shaft passes through an L-shaped connecting plate and the other end is fixed by a nut, and a fixed sleeve perpendicular to the fixed sleeve connecting shaft is provided on the other side of the fixed sleeve connecting shaft, and the fixed sleeve located on the outer side of the other bottom corner of the outer limit plate and the inner limit plate is passed through the long driving shaft and connected to the fixed sleeve through a nut; the inner side of the outer limit plate and the inner limit plate is also provided with a shaft sleeve mounted on the long driving shaft.

[0013] Furthermore, the limiting protrusion is arranged on the outer limiting plate and the protrusion is within the arc track of the angle limiting piece.

[0014] Furthermore, the inner limit plate is provided with a main wheel fixing shell sleeved on the outside of the gear fitting at the connection point where the gear fitting passes through the inner limit plate and the motor body; and a main wheel shaft sleeve is sleeved on the outside of the gear fitting connected to the driving wheel.

[0015] Further, the main wheel shaft passes through the rotating shaft of the motor body, the main wheel fixing shell, the gear matching piece, the main wheel shaft sleeve, the driving wheel and the main shaft sleeve in sequence; the main shaft sleeve passes through the main wheel fixing shell, the gear matching piece, the main wheel shaft sleeve and the driving wheel in sequence; the main wheel shaft is fixed by being sleeved on the main shaft sleeve through the fixing shaft sleeve at the main shaft sleeve; bearings are further sleeved on the outer side of the main shaft sleeve before and after the main wheel shaft sleeve, and the shaft sleeve is sleeved on the outer side of the main shaft sleeve between the main wheel shaft sleeve and the driving wheel.

[0016] The present application has the advantages that the angle limiting piece limits the rotation angle of the limiting protrusion on the outer side of the track main body through the arc track in the angle limiting piece, so that the rotation angle cannot be changed at will, and the collision and damage of the track main body to the vehicle are reduced; the installation is convenient, the structure is simple and effective, the cost is low, and the service life of the vehicle main body is effectively prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the exploded view of the present application.

[0018] Figure 2 is the cross-sectional view of the present application.

[0019] Figure 3 is the side view of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings. Figure 1-3 The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Referring to Figure 1-3 , the track device for the child vehicle with the angle limiting structure comprises a track main body, a motor body 18 and an angle limiting piece 3; the rotating shaft of the motor body 18 drives the driving wheel 7 in the track main body to rotate, thereby driving the track main body to work; the side surface of the track main body is attached to the angle limiting piece 3 fixedly connected to the motor body; the arc track 24 is arranged on the angle limiting piece 3; the limiting protrusion 23 is arranged on the side surface of the track main body; and the limiting protrusion 23 is embedded in the arc track to limit the rotation angle of the track main body. The arc center angle of the arc track 24 on the angle limiting piece 3 is 0-180 degrees, which is adjusted according to the positional relationship between the track and the bottom of the vehicle. The rotation angle of the limiting protrusion on the outer side of the track main body is limited by the arc track in the angle limiting piece, so that the rotation angle cannot be changed at will, and the collision and damage of the track main body to the vehicle are reduced.

[0022] The arc center angle of the arc track 24 on the angle limiting piece 3 is 60-120 degrees.

[0023] The crawler device with an angle limiting structure for a baby stroller has a main wheel shaft 19 on the motor body 18 that passes through the center of the rotating shaft. The main wheel shaft 19 passes through the crawler body and the angle limiting plate 3 and is then connected to the angle limiting plate 3 through a nut, so that the rotation center of the crawler body is connected to the angle limiting plate 3.

[0024] The crawler device for a baby carriage has an angle limiting structure, and the main wheel shaft 19 passes through the center of the rotating shaft and keeps sliding with the rotating shaft.

[0025] The crawler device for a baby stroller with an angle limiting structure has a main wheel shaft 19 that passes through the outer side of the crawler body and is sleeved with a main shaft sleeve 5. A circular hole is provided on the angle limiting piece 3 for the main wheel shaft 19 to pass through. The angle limiting piece 3 is fixed between one end of the main shaft sleeve 5 and the nut at the end where the main wheel shaft 19 passes through, so that the angle limiting piece 3 does not rotate with the crawler body and remains fixed to the motor body.

[0026] A crawler device for a baby carriage with an angle limiting structure, the crawler body includes: an outer limiting plate 6, an inner limiting plate 15, a crawler 1, a driving wheel 7 and a driven wheel 12; the outer limiting plate 6 and the inner limiting plate 15 are isosceles triangle plates with corresponding shapes and rounded inner and outer corners, the outer limiting plate 6 and the inner limiting plate 15 are arranged in parallel, and a driving wheel 7 and two driven wheels 12 are provided between the corresponding three inner angle positions, one end of the driving wheel 7 passes through the inner limiting plate 15 and is fixedly connected to the rotating shaft of the motor body 18, the two driven wheels 12 are rotatably connected between the outer limiting plate 6 and the inner limiting plate 15 by driving the shaft, the driving wheel 7 is located on the upper side of the two driven wheels 12, and the crawler 1 is embedded between the outer limiting plate 6 and the inner limiting plate 15 and covers the driving wheel 7 and the two driven wheels 12.

[0027] The track device for a baby stroller has an angle-limiting structure. The rotating shaft of the motor body 18 is provided with teeth that engage with one end of a gear mating member 14 that passes through an inner limit plate 15. The other end of the gear mating member 14 engages with the driving wheel 7. The outer surface of the driving wheel 7 is provided with a groove that matches the protrusion on the inner surface of the track 1, which is used to engage with the track 1 and drive the track 1 to move. The outer surfaces of the two driven wheels 12 are provided with grooves 25 that match the protrusions 21 on the inner surface of the track 1 and are used to be driven by the track 1 to rotate. The driving wheel 7 is located at the top corners of the outer limit plate 6 and the inner limit plate 15. Rotation is more convenient and labor-saving.

[0028] A crawler device with an angle limiting structure for a baby carriage has a driven wheel 12 with an axial hole in the center, a bearing 11 in the hole, a short drive shaft 10 passes through the center of the bearing 11, and both ends of the short drive shaft 10 pass through a bottom corner of the outer limiting plate 6 and the inner limiting plate 15 respectively, and are threadedly connected to the nuts located on the outside of the outer limiting plate 6 and the inner limiting plate 15. The inner sides of the outer limiting plate 6 and the inner limiting plate 15 are also provided with a shaft sleeve 8 sleeved on the short drive shaft 10.

[0029] A crawler device with an angle limiting structure for a baby carriage, a driven wheel 12 is provided with an axial hole in the center, a bearing 11 is provided in the hole, a long drive shaft 9 passes through the center of the bearing 11, the outer side of the other bottom corner of the outer limiting plate 6 and the inner limiting plate 15 are respectively fixedly connected to one end of an L-shaped connecting plate 20, one end of a fixed sleeve connecting shaft passes through an L-shaped connecting plate 20 and the other end is fixed by a nut, a fixed sleeve connecting shaft 22 is provided on the other side of the fixed sleeve connecting shaft 22, the fixed sleeve 4 located on the outer side of the other bottom corner of the outer limiting plate 6 and the inner limiting plate 15 is passed through the long drive shaft 9 and is connected to the fixed sleeve 4 by a nut 8; the outer limiting plate 6 and the inner limiting plate 15 are also provided with a shaft sleeve 8 sleeved on the long drive shaft 9.

[0030] The crawler device with an angle limiting structure for a baby carriage has a limiting protrusion 23 provided on the outer limiting plate 6 , which is protruded within the arc track 24 of the angle limiting piece 3 .

[0031] A crawler device for a baby carriage with an angle limiting structure is provided with a main wheel fixing shell 16 sleeved on the outside of the gear fitting 14 at the connection point where the gear fitting 14 passes through the inner limiting plate 15 and is connected to the motor body 18; a main wheel shaft sleeve 13 is sleeved on the outside of the gear fitting 14 connected to the driving wheel.

[0032] A crawler device with an angle limiting structure for a baby carriage, wherein the rotating shaft of the motor body 18 engages with one end of the gear mating part 14 to form a cavity, the main wheel shaft 19 passes through the cavity, and the other end 5 of the main shaft sleeve is sleeved on the outside of the main wheel shaft 19 in the cavity and is fixed to the main wheel shaft by a fixed shaft sleeve, and the fixed shaft sleeve is located in the cavity and abuts against the inner side of one end of the gear mating part 14.

[0033] A crawler device with an angle limiting structure for a baby carriage, wherein the main wheel shaft 19 passes through the rotating shaft 27 of the motor body 18, the main wheel fixing housing 16, the gear fitting 14, the main wheel shaft sleeve 13, the driving wheel 7 and the main shaft sleeve 5 in sequence and maintains a sliding connection therewith; the main shaft sleeve 5 passes through the main wheel fixing housing 16, the gear fitting 14, the main wheel shaft sleeve 13 and the driving wheel 7 in sequence and maintains a sliding connection therewith; the main wheel shaft 19 passes through the main shaft sleeve 5 and is fixed on the main shaft sleeve 5 through a fixed shaft sleeve; bearings 11 are also sleeved on the outside of the main shaft sleeve 5, located in front and behind the main wheel shaft sleeve 13, and a shaft sleeve 8 is sleeved on the outside of the main shaft sleeve 5, located between the main wheel shaft sleeve 13 and the driving wheel 7.

[0034] The motor body 18 drives the driving wheel 7 to rotate, the driving wheel 7 drives the crawler 1 to rotate, and the two driven wheels 12 follow the crawler 1 to move, realizing the movement of the vehicle. The angle limiter limits the crawler rotation angle through the cooperation of the arc track and the limiting protrusion.

[0035] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A crawler device with an angle limiting structure for a baby carriage, comprising a crawler body, a motor body (18) and an angle limiting plate (3); a rotating shaft of the motor body (18) drives a driving wheel (7) in the crawler body to rotate, thereby driving the crawler body to work, characterized in that The side of the crawler body is fitted with an angle limit piece (3) fixedly connected to the motor body, an arc track is provided on the angle limit piece (3), and a limit protrusion is provided on the side of the crawler body. The limit protrusion is embedded in the arc track to limit the rotation angle of the crawler body. The motor body (18) is provided with a main wheel shaft (19) passing through the center of the rotating shaft. The main wheel shaft (19) passes through the crawler body and the angle limit plate (3) and is then connected to the angle limit plate (3) through a nut. The main wheel shaft (19) passes through the outer side of the crawler body and is sleeved with a main shaft sleeve (5). A circular hole is provided on the angle limit plate (3) for the main wheel shaft (19) to pass through and a nut knob is used to fix the angle limit plate (3) between the main shaft sleeve (5) and the nut at the end through which the main wheel shaft (19) passes. The crawler body comprises: an outer limiting plate (6), an inner limiting plate (15), a crawler (1), a driving wheel (7) and a driven wheel (12); the outer limiting plate (6) and the inner limiting plate (15) are isosceles triangular plates with corresponding inner corners and outer rounded corners, the outer limiting plate (6) and the inner limiting plate (15) are arranged in parallel, and a driving wheel (7) and two driven wheels (12) are arranged between the corresponding three inner corner positions, one end of the driving wheel (7) passes through the inner limiting plate (15) and is fixedly connected to the rotating shaft of the motor body (18), the two driven wheels (12) are rotatably connected between the outer limiting plate (6) and the inner limiting plate (15) through the driving shaft, the driving wheel (7) is located on the upper side of the two driven wheels (12), and the crawler (1) is embedded between the outer limiting plate (6) and the inner limiting plate (15) and covers the driving wheel (7) and the two driven wheels (12). The rotating shaft of the motor body (18) is provided with teeth that engage with one end of the gear matching piece (14) passing through the inner limit plate (15), and the other end of the gear matching piece (14) engages with the driving wheel (7). The outer surface of the driving wheel (7) is provided with a groove that matches the raised inner surface of the crawler (1) and is used to engage with the crawler (1) and drive the crawler (1) to move. The outer surfaces of the two driven wheels (12) are provided with grooves that match the raised inner surface of the crawler (1) and are used to be driven by the crawler (1) to rotate. The driving wheel (7) is correspondingly located at the top corners of the outer limit plate (6) and the inner limit plate (15). A driven wheel (12) is provided with an axial hole in the center, a bearing (11) is provided in the hole, a short driving shaft (10) passes through the center of the bearing, and both ends of the short driving shaft (10) pass through a bottom corner of the outer limiting plate (6) and the inner limiting plate (15) respectively, and are threadedly connected with nuts located on the outer side of the outer limiting plate (6) and the inner limiting plate (15). The inner side of the outer limiting plate (6) and the inner limiting plate (15) is also provided with a shaft sleeve (8) sleeved on the short driving shaft (10). A driven wheel (12) is provided with an axial hole in the center thereof, a bearing (11) is provided in the hole, a long driving shaft (9) passes through the center of the bearing, the outer side of the other bottom corner of the outer limiting plate (6) and the inner limiting plate (15) are respectively fixedly connected to one end of an L-shaped connecting plate, one end of a fixed sleeve connecting shaft passes through the other end of an L-shaped connecting plate and is fixed by a nut, a fixed sleeve perpendicular to the fixed sleeve connecting shaft is provided on the other side of the fixed sleeve connecting shaft, the fixed sleeve located on the outer side of the other bottom corner of the outer limiting plate (6) and the inner limiting plate (15) passes through the long driving shaft (9) and is connected to the fixed sleeve by a nut; a shaft sleeve (8) sleeved on the long driving shaft (9) is further provided on the inner side of the outer limiting plate (6) and the inner limiting plate (15). The limiting protrusion is provided on the outer limiting plate (6), and the limiting protrusion is within the arc track of the angle limiting piece (3).

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