Hollow shaft of automobile brake booster motor

Abstract

The utility model provides a hollow shaft of an automobile brake booster motor. The hollow shaft comprises a main body mechanism and a buffer mechanism, the main body mechanism comprises a shaft body, an output end is integrally formed at one end of the shaft body, a connecting end is integrally formed at one end of the shaft body, a hollow groove is formed in the shaft body, a mounting groove is integrally formed in the output end, and the mounting groove is communicated with the hollow groove; the buffer mechanism comprises a fixing ring and a connecting ring, the fixing ring is fixedly connected to one side of the interior of the shaft body, and connecting plates are fixedly connected to one side of the connecting ring at equal intervals; after the solid shaft is connected with the shaft body, the connecting ring is used for centralizing the solid shaft and is matched with the groove to be connected with the solid shaft, so that the rotating shaft is more stable when rotating, peripheral torsional force is transmitted to the fixing ring and the connecting plate, the connecting plate is used for bearing force, and the connecting plate is replaced or maintained after being deformed. And the whole shaft body does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to a hollow shaft, in particular to a hollow shaft of an automobile brake booster motor, and belongs to the technical field of hollow shafts. Background Art

[0002] Braking, also known as braking, refers to the action of stopping or reducing the speed of a running locomotive, vehicle, other means of transportation or machinery. The general principle of braking is to fix a wheel or disc on the high-speed shaft of the machine, and install a brake shoe, belt or disc corresponding to it on the machine base, so that it can generate a braking torque under the action of external force. The brake device is a mechanical brake device that can slow down the speed of the vehicle, also known as a reducer. Simply put: the brake pedal of the car is under the steering wheel. When you step on the brake pedal, the brake lever is linked to the brake pads on the brake drum, which clamps the brake wheel disc, causing the car to slow down or stop running. The manual brake of a car is next to the gear and connected to the brake lever. The common bicycle brake is also used. It uses a rod-shaped brake or a disc brake fixed on the frame to slow down. The brake booster is a brake booster device widely used in light cars to medium-sized cars. It can be roughly divided into vacuum booster, hydraulic booster and air booster. The output shaft of the brake booster motor is connected to a hollow shaft. The hollow shaft means that there is a through hole in the center of the shaft body, and an internal keyway is opened in the through hole. The outer surface of the shaft body is processed with a stepped cylinder and an external keyway is opened. The outer surface of the shaft body is processed with a stepped cylinder;

[0003] A Chinese patent publication (CN202022576223.6) discloses a hollow shaft of a motor, which reduces the weight of the rotor and consumes less energy at work by designing a hollow structure of the rotor shaft, while reducing the amount of material used and the production cost. In addition, an exhaust hole connected to the hollow structure is provided to make the air pressure inside and outside the hollow shaft consistent after assembly, thereby preventing cracks from appearing at the connection. However, the application still has the following technical problems when in use: when this type of hollow shaft is in use, the non-fixed end of the hollow shaft will be deformed after a period of use due to the large torsional force borne by the outer periphery of the hollow shaft, thus affecting the overall use of the hollow shaft;

[0004] In order to solve the above technical problems, a hollow shaft of an automobile brake booster motor is proposed. Utility Model Content

[0005] In view of this, the utility model provides a hollow shaft of a vehicle brake booster motor to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the utility model is implemented as follows: a hollow shaft of a vehicle brake booster motor comprises a main body mechanism and a buffer mechanism;

[0007] The main body mechanism comprises a shaft body, one end of the shaft body is integrally formed with an output end, one end of the shaft body is integrally formed with a connection end, a hollow groove is provided inside the shaft body, a mounting groove is integrally formed inside the output end, and the mounting groove is communicated with the hollow groove;

[0008] The buffer mechanism includes a fixed ring and a connecting ring. The fixed ring is fixedly connected to the inner side of the shaft body. One side of the connecting ring is evenly distributed and fixedly connected with a connecting plate. One side of the connecting plate is fixedly connected to the fixed ring. One side of the connecting ring is evenly distributed with grooves.

[0009] Further preferably, a placement groove is integrally formed on one side of the inner portion of the shaft body.

[0010] Further preferably, weight-reducing grooves are equidistantly distributed on one side of the shaft.

[0011] Further preferably, air flow grooves are equidistantly distributed on one side of the shaft.

[0012] Further preferably, spiral guide grooves are equidistantly distributed on one side of the output end.

[0013] Further preferably, one side of the output end is provided with external key grooves at equal intervals, and one inner side of the output end is provided with internal key grooves at equal intervals, and the internal key grooves are connected to the mounting grooves.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] 1. The utility model arranges a connecting ring after the solid shaft is connected to the shaft body to straighten the solid shaft, and cooperates with the groove to connect the solid shaft, so that the utility model is more stable when rotating, and the peripheral torsional force is transmitted to the fixing ring and the connecting plate, and the connecting plate bears the force. After the connecting plate is deformed, it can be replaced or maintained without replacing the entire shaft body;

[0016] Second, the utility model provides a spiral guide groove in conjunction with the airflow groove, so that the shaft body rotates more stably and smoothly, reduces airflow resistance, and during the rotation process, the airflow cooperates with the airflow groove to squeeze the shaft body, making the shaft body more stable.

[0017] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a bottom view of the structure of the utility model;

[0021] Figure 3 It is a cross-sectional structural diagram of the utility model;

[0022] Figure 4 This is a connection structure diagram of the connecting ring in the utility model.

[0023] Figure numerals: 10, main body; 11, shaft; 12, connecting end; 13, output end; 14, external keyway; 15, spiral guide groove; 16, air flow groove; 17, weight reduction groove; 18, hollow groove; 19, placement groove; 20, buffer mechanism; 21, connecting ring; 22, groove; 23, connecting plate; 24, fixing ring; 31, installation groove; 32, internal keyway. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, an embodiment of the utility model provides a hollow shaft of a vehicle brake booster motor, which is composed of a main body mechanism 10 and a buffer mechanism 20.

[0027] The main mechanism 10 includes a shaft body 11, one end of which is integrally formed with an output end 13, one end of which is integrally formed with a connecting end 12, a hollow groove 18 is provided inside the shaft body 11, a mounting groove 31 is integrally formed inside the output end 13, the mounting groove 31 is connected to the hollow groove 18, one side of the output end 13 is equidistantly provided with external key grooves 14, one side of the inner part of the output end 13 is equidistantly provided with internal key grooves 32, the internal key grooves 32 are connected to the mounting groove 31, the external key grooves 14 are provided to facilitate the connection and fixation of the shaft body 11 with other equipment, and the internal key grooves 32 are provided to cooperate with the mounting grooves 31, so that the connection between the solid shaft and the shaft body 11 is more stable, the solid shaft and the inner cavity of the shaft body 11 are more closely fitted, and the vibration generated when the shaft body 11 rotates is reduced, and a placement groove 19 is integrally formed on one side of the inner part of the shaft body 11, and the placement groove 19 is convenient for filling components such as sealing rings.

[0028] In one embodiment, in order to reduce the overall weight of the shaft body 11 , weight-reducing grooves 17 are evenly spaced on one side of the shaft body 11 .

[0029] In one embodiment, in order to make the shaft body 11 more stable during rotation, spiral guide grooves 15 are evenly spaced on one side of the output end 13, and air flow grooves 16 are evenly spaced on one side of the shaft body 11. The spiral guide grooves 15 reduce the resistance of the airflow to the surface of the shaft body 11, and cooperate with the air flow grooves 16 to generate downward pressure when the shaft body 11 rotates, thereby making the connection between the shaft body 11 and the solid shaft more stable.

[0030] The buffer mechanism 20 includes a fixing ring 24, a connecting ring 21 and a connecting plate 23. The fixing ring 24 is fixedly connected to one side of the inner part of the shaft body 11. The connecting plates 23 are equidistantly arranged on one side of the fixing ring 24. One side of the connecting plate 23 is fixedly connected to the fixing ring 24. One side of the connecting plate 23 is fixedly connected to the fixing ring 24. One side of the connecting ring 21 is equidistantly provided with grooves 22. The connecting plate 23 is used to bear the load, thereby reducing the influence of the torsional force on the shaft body 11 and preventing the overall deformation of the shaft body 11. The connecting plate 23 can be made of memory metal material, which is convenient for quick adjustment of the connecting plate 23 when deformation occurs.

[0031] When the utility model is in operation: the solid shaft is connected to the shaft body 11 through the installation groove 31 cooperating with the inner key groove 32, and one side of the solid shaft is connected to the connecting ring 21 through the matching groove 22, the output end 13 of the shaft body 11 is connected to other equipment through the matching outer key groove 14, when the solid shaft and the shaft body 11 rotate, the spiral guide groove 15 cooperates with the airflow groove 16 to make the airflow generate downward pressure to push the shaft body 11, so that the connection between the shaft body 11 and the solid shaft is more stable, and the shaft body 11 is prevented from falling off, and the torsional force exerted on the connecting end 12 of the shaft body 11 is transmitted to the connecting plate 23 through the fixing ring 24, and the connecting plate 23 replaces the connecting end 12 of the shaft body 11 to generate deformation, and the connecting plate 23 can be replaced or adjusted during maintenance.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hollow shaft of a vehicle brake booster motor, characterized in that: It comprises a main body mechanism (10) and a buffer mechanism (20); The main body mechanism (10) comprises a shaft body (11), one end of the shaft body (11) is integrally formed with an output end (13), one end of the shaft body (11) is integrally formed with a connection end (12), a hollow groove (18) is provided inside the shaft body (11), a mounting groove (31) is integrally formed inside the output end (13), and the mounting groove (31) is communicated with the hollow groove (18); The buffer mechanism (20) comprises a fixing ring (24) and a connecting ring (21); the fixing ring (24) is fixedly connected to one side of the interior of the shaft body (11); one side of the connecting ring (21) is fixedly connected to a connecting plate (23) at equal intervals; one side of the connecting plate (23) is fixedly connected to the fixing ring (24); and one side of the connecting ring (21) is provided with grooves (22) at equal intervals.

2. The hollow shaft of a vehicle brake booster motor according to claim 1, characterized in that: A placement groove (19) is integrally formed on one side of the interior of the shaft body (11).

3. The hollow shaft of a vehicle brake booster motor according to claim 1, characterized in that: One side of the shaft body (11) is provided with weight-reducing grooves (17) at equal intervals.

4. The hollow shaft of a vehicle brake booster motor according to claim 1, characterized in that: One side of the shaft body (11) is provided with air flow grooves (16) distributed at equal intervals.

5. The hollow shaft of a vehicle brake booster motor according to claim 1, characterized in that: Spiral guide grooves (15) are evenly spaced and arranged on one side of the output end (13).

6. The hollow shaft of a vehicle brake booster motor according to claim 1, characterized in that: External key grooves (14) are evenly spaced on one side of the output end (13), and internal key grooves (32) are evenly spaced on the inner side of the output end (13), wherein the internal key grooves (32) are connected to the mounting groove (31).

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