Intermediate shaft assembly with high tooth aligning precision

Abstract

The utility model relates to an intermediate shaft assembly with high tooth aligning precision, which aims to solve the technical problems that the contact surface resistance is small when the current change gear is sleeved with a shaft, and the axial force and the load are larger when the change gear rotates along with the shaft, and comprises a connecting shaft and the change gear, end gears are connected to the two ends of the connecting shaft in a sleeved mode respectively, and retainers are arranged at the joints of the end gears and the ends of the connecting shaft. The connecting shaft on the inner side of one end gear is sleeved with a transmission wheel, and the side edge of the transmission wheel is provided with a fluted disc; a plurality of change gears are sequentially connected to the connecting shaft in a sleeving manner; wherein a plurality of tooth grooves which are distributed in an annular array mode are formed in the inner ring of the change gear, a plurality of sections of racks which are distributed in an annular array mode are arranged on the outer ring wall of the connecting shaft, and the racks are matched with the tooth grooves in an inserted connection mode. And partial axial force is resisted.

Description

Technical Field

[0001] The utility model relates to the technical field of intermediate shafts, in particular to an intermediate shaft assembly with high gear alignment accuracy. Background Art

[0002] The intermediate shaft is a shaft in the car's gearbox. The shaft itself is integrated with the gear. Its function is to connect the first shaft and the second shaft. By changing the shift lever, it can choose to mesh with different gears so that the two shafts can output different speeds, directions and torques.

[0003] The intermediate shaft is sleeved with speed gears of different sizes, and the speed is adjusted by switching between different speed gears. However, when the speed gear is sleeved with the shaft, the contact surface resistance is small, and when the speed gear rotates with the shaft, the axial force is large, and the load is large.

[0004] In view of this, we propose an intermediate shaft assembly with high gear alignment accuracy. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide an intermediate shaft assembly with high gear alignment accuracy to solve the technical problems that the contact surface resistance is small when the current speed gear is sleeved with the shaft, the axial force is large when the speed gear rotates with the shaft, and the load is large.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing an intermediate shaft assembly with high gear alignment accuracy, including a connecting shaft and a speed change gear;

[0007] Connecting shaft;

[0008] Wherein, the two ends of the connecting shaft are respectively sleeved with end gears, and a retaining frame is provided at the connection between the end gear and the end of the connecting shaft;

[0009] Among them, a transmission wheel is sleeved on the connecting shaft inside one of the end gears, and the side of the transmission wheel is equipped with a gear plate;

[0010] A plurality of speed change gears are sleeved on the connecting shaft in sequence;

[0011] The inner ring of the speed change gear is provided with a plurality of tooth grooves distributed in a circular array, the outer ring wall of the connecting shaft is provided with a plurality of racks distributed in a circular array, and the racks are plug-fitted with the tooth grooves.

[0012] Preferably, the sizes of the plurality of speed gears are arranged in order from small to large.

[0013] Preferably, the teeth on some of the speed change gears are arranged obliquely.

[0014] Preferably, a sleeve is sleeved on the connecting shaft between the two speed change gears;

[0015] Wherein, the cross section of the outer ring of the abutment sleeve is in the shape of an inwardly concave arc.

[0016] Preferably, end sleeves are respectively sleeved on the connecting shafts on both sides of the plurality of speed change gears, and the two end sleeves are respectively abutted and matched with the transmission wheel and one of the end gears.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model has the advantage of increasing the resistance of the speed gear and the connecting shaft in the opposite direction of rotation by arranging the rack and the tooth groove, resisting part of the axial force, and solving the problem that the contact surface resistance is small when the current speed gear 4 is sleeved with the shaft, and the axial force and load are large when the speed gear 4 rotates with the shaft.

[0019] 2. The utility model has the advantages of fixing a plurality of speed change gears while resisting each other by providing a resisting sleeve and an end sleeve, and the arc structure of the resisting sleeve can withstand a greater force and has a higher strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the speed change gear structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the connecting shaft structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the sleeve structure of the utility model;

[0024] In the figure: 1, connecting shaft; 2, end gear; 3, transmission wheel; 4, speed change gear; 5, end sleeve; 6, abutment sleeve;

[0025] 101, rack;

[0026] 401. Tooth groove. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] Embodiment 1: An intermediate shaft assembly with high gear alignment accuracy, see Figures 1 to 4 , including a connecting shaft 1 and a speed change gear 4;

[0029] The two ends of the connecting shaft 1 are respectively sleeved with end gears 2, and a retaining frame is provided at the connection between the end gear 2 and the end of the connecting shaft 1; wherein, a transmission wheel 3 is sleeved on the connecting shaft 1 inside one of the end gears 2, and the side of the transmission wheel 3 is provided with a gear plate; a number of speed gears 4 are sequentially sleeved on the connecting shaft 1; wherein, the inner ring of the speed gear 4 is provided with a number of tooth grooves 401 distributed in a circular array, and the outer ring wall of the connecting shaft 1 is provided with a number of racks 101 distributed in a circular array, and the racks 101 are plugged into the tooth grooves 401.

[0030] The utility model has the advantage of increasing the resistance of the speed change gear 4 and the connecting shaft 1 in the opposite direction by arranging the rack 101 and the tooth groove 401, and resisting part of the axial force, thereby solving the problem that the contact surface resistance of the current speed change gear 4 is small when it is sleeved with the shaft, and the axial force and load are large when the speed change gear 4 rotates with the shaft.

[0031] Specifically, the sizes of the plurality of speed gears 4 are arranged in order from small to large, which is convenient for speed regulation.

[0032] Furthermore, the teeth on the plurality of speed change gears 4 are arranged at an angle, which makes it easier to fit the gears together and increases the gear alignment accuracy.

[0033] Furthermore, a sleeve 6 is sleeved on the connecting shaft 1 between two speed gears 4, wherein the outer cross section of the sleeve 6 is an inwardly concave arc. End sleeves 5 are sleeved on the connecting shafts 1 on both sides of the speed gears 4, respectively, and the two end sleeves 5 are respectively in contact with the transmission wheel 3 and one end gear 2.

[0034] The utility model has the advantages of fixing a plurality of speed change gears 4 and abutting against each other by arranging the abutment sleeve 6 and the end sleeve 5, and bearing a greater force and having a higher strength through the arc structure of the abutment sleeve 6.

[0035] Working principle: When using the device of the utility model, a plurality of speed gears 4 are sleeved on the connecting shaft 1 in sequence, and the tooth grooves 401 of the plurality of speed gears 4 are sequentially connected with the racks 101 of the corresponding sections on the connecting shaft 1, and then the speed gears 4 are fixed. A sleeve 6 is sleeved on the connecting shaft 1 between two speed gears 4, and end sleeves 5 are sleeved on the connecting shafts 1 on both sides of the plurality of speed gears 4, respectively, so that the plurality of speed gears 4 are fixed and abutted against each other to withstand greater forces.

[0036] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An intermediate shaft assembly with high gear alignment accuracy, characterized in that: include: Connecting shaft (1); Wherein, the two ends of the connecting shaft (1) are respectively sleeved with end gears (2), and a retaining frame is provided at the connection between the end gear (2) and the end of the connecting shaft (1); A transmission wheel (3) is sleeved on the connecting shaft (1) inside one of the end gears (2), and a toothed disc is provided on the side of the transmission wheel (3); A plurality of speed change gears (4) are sleeved on the connecting shaft (1) in sequence; The inner ring of the speed change gear (4) is provided with a plurality of tooth grooves (401) distributed in a ring array, the outer ring wall of the connecting shaft (1) is provided with a plurality of racks (101) distributed in a ring array, and the racks (101) are plug-fitted with the tooth grooves (401).

2. An intermediate shaft assembly with high gear alignment accuracy as claimed in claim 1, characterized in that: The sizes of the plurality of speed change gears (4) are arranged in order from small to large.

3. The intermediate shaft assembly with high gear alignment accuracy as claimed in claim 1, characterized in that: The teeth on the plurality of speed change gears (4) are arranged at an angle.

4. An intermediate shaft assembly with high gear alignment accuracy as claimed in claim 1, characterized in that: A sleeve (6) is sleeved on the connecting shaft (1) between the two speed change gears (4); Wherein, the cross section of the outer ring of the abutment sleeve (6) is in the shape of an inwardly concave arc.

5. The intermediate shaft assembly with high gear alignment accuracy as claimed in claim 1, characterized in that: End sleeves (5) are respectively sleeved on the connecting shafts (1) on both sides of the plurality of speed change gears (4), and the two end sleeves (5) are respectively in abutment with the transmission wheel (3) and one end gear (2).

Images