CN216102567U - Swing mechanism and tricycle using same - Google Patents

Abstract

A swing mechanism and a tricycle using the swing mechanism comprise a first swing piece, a second swing piece, a connecting shaft and an elastic block, wherein the first swing piece comprises a swing shaft and a first connecting part arranged at one end of the swing shaft, the second swing piece comprises a shaft sleeve and a connecting cover sleeved on the shaft sleeve, a first jack is arranged in the middle of the swing shaft, a second jack is arranged on the connecting cover, and the connecting shaft penetrates through the second jack and the first jack; and a shaft through hole is formed in the middle of the connecting shaft. Compared with the prior art, the swing mechanism provided by the utility model has the following advantages: when the swing mechanism is particularly used on a swing tricycle, the first connecting part is connected with a front frame of the tricycle, the second connecting part is connected with a rear frame of the tricycle, and particularly, the shaft through hole is formed, so that a transmission mechanism of the tricycle can penetrate through the swing mechanism, and the swing mechanism is beneficial to simplifying the transmission mechanism of the tricycle.

Description

Swing mechanism and tricycle using same

Technical Field

The utility model relates to the field of mechanical parts, in particular to a swing mechanism and a tricycle using the same.

Background

The reason that the tricycle turns round and turns over easily at present is mainly because when the tricycle turns round, its focus can shift to between front wheel and the outside rear wheel when turning round, under the effect of centrifugal force, the car just takes place slope, turnover very easily. Therefore, the market has appeared with tricycles with a swing mechanism, and adopts single-side transmission of rear wheels; the main structure of the automatic parking device comprises a front frame, a rear frame and a swing mechanism arranged between the front frame and the rear frame, wherein the swing mechanism enables the front frame to swing within a certain range relative to the rear frame under the condition that the front frame is horizontally immovable, and the front frame automatically returns. When the tricycle turns, the front frame can incline laterally at a certain angle relative to the rear side frame under the action of the swing mechanism, so that the gravity center of the tricycle moves towards the inner side of the turn, and the tricycle is more stable and reliable when turning. Because the front frame needs to swing, if a traditional transmission structure is adopted, a transmission chain of the bicycle is twisted into a 8 shape, and the bicycle is difficult to ride normally. The existing tricycle with a rocking mechanism is designed into a multi-section transmission system. As shown in fig. 1 and 2, the tricycle includes a front frame 101 and a rear frame 102, a support frame 1021 extending downward is arranged on the rear frame 102, and a swing mechanism 111 is arranged on the support frame 1021; the front frame 101 is connected with a swing mechanism 111, a first transmission chain wheel 103 is arranged on one side of the rear part of the front frame 101, a second transmission chain wheel 104 is arranged on the other side of the front part of the rear frame 102, the first transmission chain wheel 103 and the second conventional chain wheel 104 are oppositely arranged and connected through a multi-stage universal joint 105, and the first transmission chain wheel 103 is in transmission connection with a driving chain wheel 107 on a crankshaft of the front frame 101 through a first chain 106; the second driving sprocket 104 is drivingly connected to a rear sprocket 109 on one of the rear wheels 110 via a second chain 108. When the front frame 101 is inclined through the swing mechanism 111, the first chain 106, the first transmission chain wheel 103 and the driving chain wheel 107 are inclined along with the front frame, and the multi-stage universal joint 105 is subjected to form change so as to ensure that the second transmission chain wheel 104 is not stressed by the inclination of the front frame 101; and keeping the power transmission normal. However, in the above technical solution, power needs to pass through the first chain 106, the first transmission sprocket 103, the multi-stage universal joint 105, the second transmission sprocket 104, the second chain 108, and the rear sprocket 109 to drive the rear wheel 110 to rotate, which belongs to multi-stage transmission, the conventional system is complex, the number of transmission components is large, and these transmission components mounted on the outer side of the frame are adjusted after the car is assembled, either chain linkage or universal joint linkage is adopted, so that it is difficult to pre-assemble the tricycle before packing, and the assembling process of the tricycle after unpacking is very complex.

SUMMERY OF THE UTILITY MODEL

The present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a swing mechanism with a shaft through hole in the middle and a tricycle using the swing mechanism.

According to the utility model provides a main technical scheme who wabbler mechanism adopted does: the swing mechanism comprises a first swing piece, a second swing piece, a connecting shaft and an elastic block, wherein the first swing piece comprises a swing shaft and a first connecting part arranged at one end of the swing shaft, the second swing piece comprises a shaft sleeve and a connecting cover sleeved on the shaft sleeve, and the connecting cover is provided with a second connecting part; the outer wall of the swing shaft is provided with an outer clamping groove, and the inner wall of the shaft sleeve is provided with an inner clamping groove; the other end of the swing shaft is inserted into the shaft sleeve, the outer clamping groove is opposite to the inner clamping groove, one end of the elastic block is inserted into the inner clamping groove, and the other end of the elastic block is inserted into the outer clamping groove; the middle part of the swing shaft is provided with a first jack, the connecting cover is provided with a second jack, and the connecting shaft penetrates through the second jack and the first jack to rotatably connect the first swing piece and the second swing piece; and a shaft through hole is formed in the middle of the connecting shaft.

The utility model provides a wabbler mechanism still adopts following attached technical scheme:

the outer clamping grooves are multiple and are evenly formed in the outer wall of the swing shaft, and the inner clamping grooves are multiple and are evenly formed in the inner wall of the shaft sleeve.

The connecting cover comprises a cover body and a connecting plate arranged at one end of the cover body, the middle of the connecting plate is provided with the second jack, and the connecting plate is the second connecting part.

The second connecting part is provided with a plurality of connecting holes.

The plane of the second connecting portion is parallel to the plane of the first connecting portion.

The first connecting part is a flange arranged on the swing shaft.

The shaft sleeve is provided with a positioning block, the connecting cover is provided with a positioning groove, the positioning block is inserted into the positioning groove, the positioning block is provided with a first adjusting hole, the positioning groove is provided with a second adjusting hole, and the shaft sleeve further comprises an adjusting screw rod, and the adjusting screw rod is inserted into the second adjusting hole and the first adjusting hole.

The connecting axle includes a shaft section of thick bamboo and retaining member, the one end of a shaft section of thick bamboo is equipped with spacing platform, the other end of a shaft section of thick bamboo with the retaining member cooperation.

The retaining member is a nut, the other end of the shaft barrel is provided with an external thread, and the nut is matched with the external thread.

The nut is two, and two nuts all with external screw thread cooperation. The outer wall of the nut is provided with a rotation stopping groove, the rotation stopping grooves on the two nuts are opposite, and a rotation stopping block is inserted into the rotation stopping grooves.

And a bearing is arranged between the outer wall of the connecting shaft and the inner wall of the first jack.

And a bearing placing groove is arranged in the first jack, and the outer wall of the bearing abuts against the bearing placing groove.

A clamp spring groove is formed in the first jack, a clamp spring is arranged in the clamp spring groove, and the clamp spring abuts against the side wall of the bearing.

The connecting cover is provided with an amplitude limiting groove, the first swing piece is provided with a telescopic limiting rod, and the free end of the telescopic limiting rod is located in the amplitude limiting groove.

The bottom still is equipped with the locking groove in the range spacing inslot, can insert when flexible gag lever post stretches out the locking groove, first swing and second swing the piece and are locked, can not take place to sway.

According to the utility model provides a main technical scheme that the tricycle adopted does: the front frame is connected with the rear frame through a swing mechanism; the rear frame comprises a wheel frame and a gear box arranged on the wheel frame, and the swinging mechanism is connected with the gear box; the wheel frame is symmetrically provided with two rear wheels, and the front frame is provided with a front wheel; the traditional mechanism penetrates through the front frame, the swinging mechanism and the gear box in sequence, and the transmission mechanism is in linkage fit with at least one of the two rear wheels; the swing mechanism comprises a first swing piece, a second swing piece, a connecting shaft and an elastic block, the first swing piece comprises a swing shaft and a first connecting part arranged at one end of the swing shaft, the second swing piece comprises a shaft sleeve and a connecting cover sleeved on the shaft sleeve, and the connecting cover is provided with a second connecting part; the outer wall of the swing shaft is provided with an outer clamping groove, and the inner wall of the shaft sleeve is provided with an inner clamping groove; the other end of the swing shaft is inserted into the shaft sleeve, the outer clamping groove is opposite to the inner clamping groove, one end of the elastic block is inserted into the inner clamping groove, and the other end of the elastic block is inserted into the outer clamping groove; the middle part of the swing shaft is provided with a first jack, the connecting cover is provided with a second jack, and the connecting shaft penetrates through the second jack and the first jack to rotatably connect the first swing piece and the second swing piece; and a shaft through hole is formed in the middle of the connecting shaft.

Compared with the prior art, the swing mechanism provided by the utility model has the following advantages: when the swing mechanism is particularly used on a swing tricycle, the first connecting part is connected with a front frame of the tricycle, the second connecting part is connected with a rear frame of the tricycle, and particularly, the shaft through hole is formed, so that a transmission mechanism of the tricycle can penetrate through the swing mechanism, the transmission mechanism of the tricycle is facilitated to be simplified, and meanwhile, the swing mechanism is simple and compact in structure, few in parts, convenient to assemble and low in production cost.

Compared with the prior art, the swing mechanism provided by the utility model has the following advantages: the tricycle adopts above-mentioned wabbler mechanism, has simplified the relation of connection between back frame and the wabbler mechanism, and the axle perforation in the wabbler mechanism can be regarded as the passageway of drive mechanism transmission moment of torsion simultaneously, helps simplifying the structure of traditional mechanism to make the outward appearance of tricycle clean and tidy generous.

Drawings

Fig. 1 is a block diagram of a tricycle with a swingable frame according to the prior art.

Fig. 2 is a bottom view of a prior art tricycle with a swingable frame.

Fig. 3 is a structural view of the rocking mechanism of the present invention.

Fig. 4 is a structural view of the rocking mechanism of the present invention with the connecting cover removed.

Fig. 5 is a structural view of the connection cover of the present invention.

Fig. 6 is an exploded view of the rocking mechanism of the present invention.

Fig. 7 is a rear view of the rocking mechanism of the present invention.

Fig. 8 is a cross-sectional view a-a of fig. 7.

Fig. 9 is a structural view of a tricycle according to the present invention.

Fig. 10 is a partial sectional view showing the front frame, the swing mechanism, the rear frame, and the conventional mechanism assembled together in accordance with the present invention.

Detailed Description

Referring to fig. 3 to 8, according to an embodiment of a swing mechanism provided by the present invention, the swing mechanism includes a first swing member, a second swing member, a connecting shaft, and an elastic block 4, the first swing member includes a swing shaft 1 and a first connecting portion 11 provided at one end of the swing shaft 1, the second swing member includes a shaft sleeve 2 and a connecting cover 3 sleeved on the shaft sleeve 2, and the connecting cover 3 is provided with a second connecting portion; the outer wall of the swing shaft 1 is provided with an outer clamping groove 12, and the inner wall of the shaft sleeve 2 is provided with an inner clamping groove 21; the other end of the swing shaft 1 is inserted into the shaft sleeve 2, the outer clamping groove 12 is opposite to the inner clamping groove 21, one end of the elastic block 4 is inserted into the inner clamping groove 21, and the other end of the elastic block 4 is inserted into the outer clamping groove 12; a first jack 13 is arranged in the middle of the swing shaft 1, a second jack 33 is arranged on the connecting cover 3, and the connecting shaft penetrates through the second jack 33 and the first jack 13 to rotatably connect the first swing piece and the second swing piece; the middle part of the connecting shaft is provided with a shaft through hole 53. The elastic block 4 may be a rubber elastic block 4. The two sides of the shaft sleeve 2 are provided with annular baffle plates, and the annular baffle plates 101 plug the two sides of the outer clamping groove 12, so that the elastic block 4 is prevented from shifting, and meanwhile, the assembly of the elastic block 4 is facilitated. The outer clamping grooves 12 are uniformly formed in the outer wall of the swing shaft 1, and the inner clamping grooves 21 are uniformly formed in the inner wall of the shaft sleeve 2. When the swing mechanism is in a static state, the elastic block 4 is not deformed, when the first swing piece is twisted relative to the second swing piece, the middle part of the elastic block 4 is extruded and deformed, and along with the automatic recovery of the elastic block 4, the first swing piece is recovered to an initial state. When the swing mechanism is particularly used on a swing tricycle, the first connecting part 11 is connected with a front frame of the tricycle, the second connecting part is connected with a rear frame of the tricycle, particularly, the shaft through hole 53 is formed, so that a transmission mechanism of the tricycle can penetrate through the swing mechanism, the transmission mechanism of the tricycle is facilitated to be simplified, and meanwhile, the swing mechanism is simple and compact in structure, few in parts, convenient to assemble and low in production cost.

Referring to fig. 5 to 8, according to the above-mentioned embodiment of the present invention, the connecting cover 3 includes a cover body 31 and a connecting plate 32 disposed at one end of the cover body 31, the second insertion hole 33 is disposed at the middle of the connecting plate 32, the connecting plate 32 is the second connecting portion, and a plurality of connecting holes are disposed on the connecting plate. The plane of the second connecting portion is parallel to the plane of the first connecting portion 11. The first connection portion 11 is a flange provided on the rocking shaft 1. When the first connecting part 11 and the second connecting part of the structure are assembled with the front frame and the rear frame of the three wheels, the first connecting part and the second connecting part are only fastened through bolts; the second connecting part is arranged on the connecting cover 3, so that the assembly between the swing mechanism and the rear frame of the tricycle is facilitated, and the rear frame structure of the tricycle is facilitated to be simplified. The sleeve body 31 and the connecting plate 32 are of an integrally formed structure, the connecting plate 32 is located on one side of the sleeve body 31, the detachable sealing cover 102 is arranged on the other side of the sleeve body 31, the sealing cover 102 covers the connecting cover 3 and the open end of the shaft sleeve 2, the sealing performance of the swing mechanism is improved, rainwater and dust are prevented from entering the swing mechanism, and the service life of the swing mechanism is prolonged.

Referring to fig. 4 to 8, according to the above embodiment of the present invention, a positioning block 22 is disposed on the shaft sleeve 2, a positioning groove 34 is disposed on the connecting cover 3, the positioning block 22 is inserted into the positioning groove 34, a first adjusting hole 221 is disposed on the positioning block 22, a second adjusting hole 341 is disposed on the positioning groove 34, and the present invention further includes an adjusting screw 10, and the adjusting screw 10 is inserted into the second adjusting hole 341 and the first adjusting hole 221. The matching of the positioning block 22 and the positioning groove 34 can avoid the relative rotation between the shaft sleeve 2 and the connecting cover 3, meanwhile, the adjusting screw 10 is respectively matched with the first adjusting hole 221 and the second adjusting hole 341, and can adjust the angle between the second connecting part and the shaft sleeve 2, when the rear frame of the three wheels can not be positioned at the same axial lead with the swing mechanism due to precision error, the distance and the angle between the second adjusting hole 341 and the first adjusting hole 221 can be adjusted through the adjusting screw 10, so that the rear frame and the swing mechanism are positioned at the same axial lead, and the yield of the three wheels is greatly improved.

Referring to fig. 6 and 8, according to the above embodiment of the present invention, the connecting shaft includes a shaft cylinder 5 and a locking member, one end of the shaft cylinder 5 is provided with a limiting table 51, and the other end of the shaft cylinder 5 is engaged with the locking member. In particular, the stop block 51 is positioned adjacent the second receptacle 33 on one side of the rocking mechanism and the locking member is positioned on the other side of the rocking mechanism to pivotally connect the first rocking member to the second rocking member. Simple structure and convenient assembly.

Referring to fig. 6 and 8, according to the above embodiment of the present invention, the locking member is a nut 6, the other end of the shaft tube 5 is provided with an external thread 52, and the nut 6 is engaged with the external thread 52. The number of the nuts 6 is two, and the two nuts 6 are matched with the external threads 52. The outer wall of the nut 6 is provided with a rotation stopping groove 61, the rotation stopping grooves 61 on the two nuts 6 are opposite, and a rotation stopping block is inserted into the rotation stopping groove 61. Still be equipped with gasket 103 between nut 6 and the rocking shaft 1, gasket 103 can be spacing with rocking shaft 1, and rocking shaft 1 friction that avoids simultaneously drives nut 6 and rotates. The locking piece is the nut 6, so that the assembly efficiency is improved; meanwhile, two nuts 6 are matched with the external threads 52, so that the nuts 6 can be effectively prevented from rotating and falling off; set up on nut 6 and end a commentaries on classics groove 61 and carry out synchronous positioning with two nuts 6 through the piece that ends commentaries on classics, greatly reduced nut 6 take place the risk of rotation, improved this wabbler mechanism's reliability, security.

Referring to fig. 6 and 8, according to the above-mentioned embodiment of the present invention, a bearing 7 is disposed between the outer wall of the connecting shaft and the inner wall of the first insertion hole 13. A bearing placing groove 14 is formed in the first jack 13, and the outer wall of the bearing 7 abuts against the bearing placing groove 14. Be equipped with jump ring 8 groove in the first jack 13, jump ring 8 inslot is equipped with jump ring 8, jump ring 8 top is leaned on the bearing 7 lateral wall. The axis of the bearing 7 is convenient to assemble and effectively prevented from sliding by the clamp spring 8.

Referring to fig. 3, 5 and 6, according to the above embodiment of the present invention, the connecting cover 3 is provided with an amplitude limiting groove 35, the first rocking member is provided with a telescopic limiting rod 9, and a free end of the telescopic limiting rod 9 is located in the amplitude limiting groove 35. The cooperation of range spacing groove 35 and flexible gag lever post 9 for first rocking piece can only rock in the rocking angle of settlement for the second rocking piece, has improved security, the reliability of product, has prolonged the life of elastic block 4 simultaneously.

Referring to fig. 3, 5 and 6, according to the above-mentioned embodiment of the present invention, the width limiting groove 35 is further provided with a locking groove 36 at the bottom thereof, and the retractable limiting rod 9 can be inserted into the locking groove 36 when it is extended. When the tricycle does not need to use the swinging function of the tricycle, the telescopic limiting rod 9 can be inserted into the locking groove 36 when extending out, and the first swinging piece and the second swinging piece are locked and cannot swing.

Referring to fig. 9 and 10, an embodiment of a tricycle according to the present invention includes a front frame 201, a rear frame, and a transmission mechanism 204, wherein the front frame 201 is connected to the rear frame through a swing mechanism 205; the rear frame comprises a wheel frame 203 and a gear box 202 arranged on the wheel frame 203, and the swing mechanism 205 is connected with the gear box 202; two rear wheels 206 are symmetrically arranged on the wheel frame 203, and a front wheel 207 is arranged on the front frame 201; the traditional mechanism sequentially penetrates through the front frame 201, the swinging mechanism 205 and the gear box 202, and the transmission mechanism 204 is in linkage fit with at least one of the two rear wheels 206; the rocking mechanism 205 is the rocking mechanism 205 described in the above embodiments, and the transmission mechanism 204 passes through the shaft through hole 53 in the rocking mechanism 205. The tricycle adopts the swing mechanism 205, so that the connection relationship between the rear frame and the swing mechanism 205 is simplified, and meanwhile, the shaft through hole 53 in the swing mechanism 205 can be used as a torque transmission channel of the transmission mechanism 204, so that the structure of the traditional mechanism is simplified, and the appearance of the tricycle is neat and elegant.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.

Claims (10)

1. The utility model provides a rocking mechanism, includes that first rocking piece, second rock piece, connecting axle and elastic block, its characterized in that: the first swing piece comprises a swing shaft and a first connecting part arranged at one end of the swing shaft, the second swing piece comprises a shaft sleeve and a connecting cover sleeved on the shaft sleeve, and a second connecting part is arranged on the connecting cover;

the outer wall of the swing shaft is provided with an outer clamping groove, and the inner wall of the shaft sleeve is provided with an inner clamping groove;

the other end of the swing shaft is inserted into the shaft sleeve, the outer clamping groove is opposite to the inner clamping groove, one end of the elastic block is inserted into the inner clamping groove, and the other end of the elastic block is inserted into the outer clamping groove;

the middle part of the swing shaft is provided with a first jack, the connecting cover is provided with a second jack, and the connecting shaft penetrates through the second jack and the first jack to rotatably connect the first swing piece and the second swing piece; and a shaft through hole is formed in the middle of the connecting shaft.

2. The rocking mechanism of claim 1, wherein: the connecting cover comprises a cover body and a connecting plate arranged at one end of the cover body, the middle of the connecting plate is provided with the second jack, and the connecting plate is the second connecting part.

3. The rocking mechanism of claim 1, wherein: the plane of the second connecting portion is parallel to the plane of the first connecting portion.

4. The rocking mechanism of claim 1, wherein: the shaft sleeve is provided with a positioning block, the connecting cover is provided with a positioning groove, the positioning block is inserted into the positioning groove, the positioning block is provided with a first adjusting hole, the positioning groove is provided with a second adjusting hole, and the shaft sleeve further comprises an adjusting screw rod, and the adjusting screw rod is inserted into the second adjusting hole and the first adjusting hole.

5. The rocking mechanism of claim 1, wherein: the connecting axle includes a shaft section of thick bamboo and retaining member, the one end of a shaft section of thick bamboo is equipped with spacing platform, the other end of a shaft section of thick bamboo with the retaining member cooperation.

6. The rocking mechanism of claim 5, wherein: the retaining member is a nut, the other end of the shaft barrel is provided with an external thread, and the nut is matched with the external thread.

7. The rocking mechanism of claim 1, wherein: and a bearing is arranged between the outer wall of the connecting shaft and the inner wall of the first jack.

8. The rocking mechanism of claim 7, wherein: a clamp spring groove is formed in the first jack, a clamp spring is arranged in the clamp spring groove, and the clamp spring abuts against the side wall of the bearing.

9. The rocking mechanism of claim 1, wherein: the connecting cover is provided with an amplitude limiting groove, the first swing piece is provided with a telescopic limiting rod, and the free end of the telescopic limiting rod is located in the amplitude limiting groove.

10. A tricycle, its characterized in that: the front frame is connected with the rear frame through a swing mechanism; the rear frame comprises a wheel frame and a gear box arranged on the wheel frame, and the swinging mechanism is connected with the gear box; the wheel frame is symmetrically provided with two rear wheels, and the front frame is provided with a front wheel; the transmission mechanism penetrates through the front frame, the swinging mechanism and the gear box in sequence, and is in linkage fit with at least one of the two rear wheels; the rocking mechanism is as claimed in any one of claims 1 to 9.

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