Novel baby carriage rear axle assembly

Abstract

The utility model discloses a novel baby carriage rear axle assembly, which relates to the technical field of baby carriage rear axles, and comprises an axle body, a reduction gearbox body is arranged in the axle body, a differential mechanism is arranged on one part in the reduction gearbox body, a differential mechanism gear is arranged on the differential mechanism, and a reduction gear structure is arranged on the other part in the reduction gearbox body. The bridge body is connected with a motor; according to the utility model, the buffer structure is arranged in the gear structure, so that the gear can eliminate the tooth collision defect through self buffer in a limit state, the power of a vehicle cannot be lost, and the reduction gearbox body in the axle body adopts an integrated die-casting process, so that the transmission precision is higher; the motor part can expand and add an electromagnetic brake to increase a hill-holding function, and more mounting holes can adapt to different vehicle types.

Description

Technical Field

[0001] The utility model relates to the technical field of rear axles for baby carriages, in particular to a novel rear axle assembly for baby carriages. Background Art

[0002] With the transformation and upgrading of the baby stroller market and the improvement of terminal requirements, the original baby stroller motors and baby stroller rear axles in the market can no longer meet the needs of the market and terminals. The existing baby stroller motors and rear axles can only meet the driving needs of baby strollers. The existing baby stroller motors in the market are generally micro-motor reducer single-sided or multilateral drive structures, or rear axle assembly drives. Both types of drives have a common problem, that is, the overall noise is too loud. Because baby strollers are used by a large number of children, too much noise will affect children's hearing development at a certain level. Therefore, being able to effectively solve the noise problem at the technical level is the key to the entire baby stroller motor. In addition to the noise problem, there is another common problem. Since the gears used in the baby stroller motor are all plastic gears, if the entire vehicle is overloaded or braked suddenly, the internal gears will clash, causing the entire drive to lose power. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a novel rear axle assembly of a baby carriage, which solves the problem that the existing baby carriage has high noise and loses power under extreme conditions.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model discloses a novel rear axle assembly for a baby carriage, comprising a bridge body, a reduction box body being arranged in the bridge body, a differential being arranged in a part inside the reduction box body, a differential gear being arranged on the differential, a reduction gear structure being installed in another part inside the reduction box body, and the bridge body being connected to a motor.

[0006] Furthermore, a primary reduction gear is rotatably provided on one side of the reduction box body, and a secondary reduction gear cooperating with the primary reduction gear is rotatably provided on the other side of the reduction box body, and the secondary reduction gear is meshed with the differential gear.

[0007] Furthermore, the first-stage reduction gear is provided with a groove on one side of the second-stage reduction gear, and a buffer is fixedly provided in the groove.

[0008] Furthermore, the buffer is a star-shaped structure provided with at least four protrusions, the number of the star-shaped protrusions on the buffer is an even number, empty grooves are formed between the protrusions of the star-shaped structure of the buffer, and the empty grooves formed by the buffer are spaced apart with filling solids, and the filling solids are an integral structure with the first-stage reduction gear.

[0009] Furthermore, the secondary reduction gear is also provided with an engaging protrusion on one side of the primary reduction gear, the position of the engaging protrusion corresponds to the empty groove formed by the star-shaped structure of the buffer, and the engaging protrusion is inserted into the empty groove formed by the star-shaped structure of the buffer.

[0010] Furthermore, a reduction transmission shaft is rotatably provided on the side of the motor reduction box body, a driven gear and a driving gear are fixedly provided on the reduction transmission shaft, and the driven gear is meshed with the primary reduction gear.

[0011] Furthermore, a motor gear is rotatably provided on the motor, and the motor gear is meshed with the driving gear.

[0012] Furthermore, the reduction gearbox body is formed by integral die casting.

[0013] Furthermore, axles are respectively installed on both sides of the differential, and mounting plates for mounting the rear axle on the baby carriage are provided on both sides of the bridge body, and a plurality of mounting adjustment holes are distributed on the mounting plates.

[0014] Furthermore, an electromagnetic brake may be installed on the motor.

[0015] The beneficial effects of the utility model are as follows: the utility model provides a buffer structure in the gear structure, so that in the extreme state the gear can eliminate the tooth knocking defect through its own buffer, so that the vehicle will not lose power. The reduction gear box inside the bridge body adopts an integrated die-casting process, and the transmission accuracy is higher. The motor part can be expanded to increase the electromagnetic brake to increase the hill-holding function, and there are more installation holes to adapt to different vehicle models. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of a bridge housing of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a bridge body without a reduction box in an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a reduction gearbox according to an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of a primary reduction gear in an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of a two-stage reduction gear in an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of the meshing of the driving gear and the motor gear in the embodiment of the utility model. DETAILED DESCRIPTION

[0024] Combine the following Figure 1-7 The utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0025] General implementation:

[0026] Combined with Figure 1-7 The novel rear axle assembly of a baby stroller comprises a bridge body 02, wherein a reduction box body 04 is provided inside the bridge body 02, a differential 07 is provided in a part of the interior of the reduction box body 04, a differential gear 08 is provided on the differential 07, axles 13 are respectively installed on both sides of the differential 07, mounting plates 14 for mounting the rear axle on the baby stroller are provided on both sides of the bridge body 02, a plurality of mounting adjustment holes 03 are distributed on the mounting plates 14, so that the rear axle assembly of the present application can be adapted to different vehicle models, and the user can freely adjust the matching installation position of the frame and the rear axle assembly through the mounting adjustment holes 0 at different positions.

[0027] The bridge body 02 is connected to a motor 01 , and the motor 01 can be selectively equipped with an electromagnetic brake 10 according to cost or design function requirements. The electromagnetic brake 10 can lock the motor 01 , so that the baby carriage installed on the rear axle has a parking function.

[0028] A reduction gear structure is installed in another part of the reduction box body 04, and the reduction gear structure transmits the power of the motor 01 to the differential 07 for driving the baby carriage.

[0029] A primary reduction gear 05 is rotatably provided on one side of the reduction box body 04 , and a secondary reduction gear 06 cooperating with the primary reduction gear 05 is rotatably provided on the other side of the reduction box body 04 . The secondary reduction gear 06 is meshed with the differential gear 08 .

[0030] The first-stage reduction gear 05 is provided with a groove on one side of the second-stage reduction gear 06, and a buffer 51 is fixedly provided in the groove. The buffer 51 is a star-shaped structure provided with at least four protrusions, and the number of star-shaped protrusions on the buffer 51 is an even number. The star-shaped structure of the buffer 51 has empty grooves formed between the protrusions. The empty grooves formed by the buffer 51 are filled with filling solids 52, and the filling solids 52 are an integral structure with the first-stage reduction gear 05.

[0031] The secondary reduction gear 06 is located on one side of the primary reduction gear 05 and is further provided with an engagement protrusion 61 . The position of the engagement protrusion 61 corresponds to the empty groove formed by the star-shaped structure of the buffer 51 . The engagement protrusion 61 is inserted into the empty groove formed by the star-shaped structure of the buffer 51 .

[0032] In a general embodiment, the buffer 51 is preferably provided with six raised star-shaped structures, six empty slots are formed between the six raised star-shaped structures of the buffer 51, three filling solids 52 are intermittently arranged in the six empty slots, the filling solids 52 and the first-stage reduction gear 05 are an integral structure, the filling solids 52 are used to fix the buffer 51 to prevent it from rotating when subjected to force, and the second-stage reduction gear 06 is provided with three meshing protrusions 61, the meshing protrusions 61 correspond to the three empty slots of the unfilled buffer 51, and the meshing protrusions 61 are inserted into the three empty slots of the unfilled buffer 51.

[0033] This prevents the gears in the housing from hitting when in an overload state or an emergency brake state. The buffer 51 allows the gears in an extreme state to eliminate the risk of hitting by providing a buffer themselves.

[0034] The motor reduction box 04 is rotatably provided with a reduction transmission shaft on the side, and a driven gear 11 and a driving gear 12 are fixedly provided on the reduction transmission shaft. The driven gear 11 is meshed with the primary reduction gear 05. A motor gear 15 is rotatably provided on the motor 01, and the motor gear 15 is meshed with the driving gear 12. Through such a setting, an eccentric axis design of the motor can be achieved, so that the position of the rear axle assembly is more reasonable after being installed on the baby carriage.

[0035] In other embodiments, the motor 01 can directly drive the reduction transmission shaft. In this case, the reduction transmission shaft only needs to be provided with a driven gear 11 to transmit power, which is used in situations where the cost is low or the installation space reserved for the stroller is large.

[0036] The reduction box body 04 is formed by one-piece die casting, and the reduction box body inside the bridge body adopts an one-piece die casting process to enable the transmission reduction gear to be transmitted in a high-precision box body, and the transmission accuracy can reach 8 levels or even exceed 8 levels.

[0037] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology in this field to understand the content of the utility model and implement it, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A novel rear axle assembly for a baby carriage, comprising an axle body (02), characterized in that: A reduction gear box (04) is provided inside the bridge body (02), a differential (07) is provided in a part inside the reduction gear box (04), a differential gear (08) is provided on the differential (07), a reduction gear structure is installed in another part inside the reduction gear box (04), and the bridge body (02) is connected to a motor (01).

2. A novel rear axle assembly for a baby carriage according to claim 1, characterized in that: A primary reduction gear (05) is rotatably provided on one side of the reduction box (04), and a secondary reduction gear (06) that cooperates with the primary reduction gear (05) is rotatably provided on the other side of the reduction box (04), and the secondary reduction gear (06) is meshed with the differential gear (08).

3. A new baby carriage rear axle assembly according to claim 2, characterized in that: The first-stage reduction gear (05) is provided with a groove on one side of the second-stage reduction gear (06), and a buffer (51) is fixedly provided in the groove.

4. The novel rear axle assembly of a baby carriage according to claim 3 is characterized in that: The buffer (51) is a star-shaped structure provided with at least four protrusions, the number of the star-shaped protrusions on the buffer (51) is an even number, empty slots are formed between the protrusions of the star-shaped structure of the buffer (51), and filling solids (52) are arranged at intervals between the empty slots formed by the buffer (51), and the filling solids (52) and the first-stage reduction gear (05) are an integral structure.

5. The novel rear axle assembly of a baby carriage according to claim 4 is characterized in that: The secondary reduction gear (06) is located on one side of the primary reduction gear (05) and is also provided with an engagement protrusion (61), the position of the engagement protrusion (61) corresponds to the empty groove formed by the star-shaped structure of the buffer (51), and the engagement protrusion (61) is inserted into the empty groove formed by the star-shaped structure of the buffer (51).

6. The novel rear axle assembly of a baby carriage according to claim 2 is characterized in that: A reduction transmission shaft is rotatably arranged on the side of the motor reduction box (04), and a driven gear (11) and a driving gear (12) are fixedly arranged on the reduction transmission shaft. The driven gear (11) is meshed with the primary reduction gear (05).

7. The novel rear axle assembly of a baby carriage according to claim 6 is characterized in that: The motor (01) is rotatably provided with a motor gear (15), and the motor gear (15) is meshed with the driving gear (12).

8. The novel rear axle assembly of a baby carriage according to claim 1 is characterized in that: The reduction gearbox body (04) is formed by integral die casting.

9. The novel rear axle assembly of a baby carriage according to claim 1 is characterized in that: Axles (13) are respectively installed on both sides of the differential (07), and mounting plates (14) for mounting the rear axle on the baby carriage are provided on both sides of the bridge body (02), and a plurality of mounting adjustment holes (03) are distributed on the mounting plate (14).

10. The novel rear axle assembly of a baby carriage according to claim 1 is characterized in that: An electromagnetic brake (10) may be installed on the motor (01).

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