CN215633482U

CN215633482U - Starting machine shaft with limiting function

Info

Publication number: CN215633482U
Application number: CN202122225571.3U
Authority: CN
Inventors: 曹传群; 徐建民
Original assignee: Taiyangma Automobile Technology Fujian Co ltd
Current assignee: Taiyangma Automobile Technology Fujian Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-01-25
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to a starter shaft with a limiting function, which belongs to the technical field of starters and comprises a transmission shaft and a plurality of planetary gears, wherein a fixed disc is fixed at the output end of the transmission shaft; the inner ring of the planet gear is provided with an annular clamping groove, the fixed bolt is further provided with a transverse through groove which radially penetrates through the fixed bolt, a compression spring which is always in a compression state is arranged in the transverse through groove, push rods are fixed at two ends of the compression spring, free ends of the push rods extend out of the transverse through groove and then are rotatably connected with clamping balls, and the clamping balls are clamped in the annular clamping groove. The utility model can play a good limiting role on the planetary gear, prevent the planetary gear from coming off and has long service life.

Description

Starting machine shaft with limiting function

Technical Field

The utility model relates to a starter shaft with a limiting function, and belongs to the technical field of starters.

Background

The automobile engine is realized by external force when entering normal operation, and the modern automobile engine is mostly started by electricity, so that the automobile engine is simple and reliable, is convenient to operate and is convenient to control remotely. The electric starting uses the storage battery as a power supply and uses the direct current motor as power, and works through the transmission mechanism and the control mechanism. Generally, a direct current motor, a transmission mechanism and a control mechanism are assembled into a whole, which is called a starter, and converts electric energy of a storage battery into mechanical energy to drive an engine flywheel to rotate so as to start the engine.

In starting the starter motor of the vehicle, the rotational torque of the electric motor is transmitted to the drive shaft via the spline by the planetary gear reduction mechanism. When the starter shaft is used for installing the planetary gear, if no limiting device is provided, the planetary gear runs out during rotation, particularly in a high-speed rotation state during starting, and very serious results can be caused if the planetary gear runs out.

The existing limit of the planetary gear is generally limited by an end disc, the end disc is fixed on the outer side of the planetary gear, and the end disc is tightly attached to the planetary gear through an end cover to prevent the planetary gear from falling off. However, since the planetary gear rotates continuously in the operating state, the end cover is easily worn by the limiting mode, and the end cover fails to work and loses the limiting function.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the existing planetary gear can be separated in the transmission process, the end cover is used for limiting, the abrasion is easy to lose efficacy and the like, the utility model designs the starter shaft with the limiting function, the starter shaft can well limit the planetary gear, the planetary gear is prevented from separating, and the service life is long.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a starter shaft with a limiting function comprises a transmission shaft and a plurality of planetary gears, wherein a fixed disc is fixed at the output end of the transmission shaft, fixed bolts which are the same in number as the planetary gears and distributed in an annular array are fixed at one end, away from the transmission shaft, of the fixed disc, the planetary gears are rotatably sleeved on the fixed bolts in a one-to-one correspondence manner, and a limiting disc for preventing the planetary gears from falling off is fixed at the free end of each fixed bolt; the inner ring of the planet gear is provided with an annular clamping groove, the fixed bolt is further provided with a transverse through groove which radially penetrates through the fixed bolt, a compression spring which is always in a compression state is arranged in the transverse through groove, push rods are fixed at two ends of the compression spring, free ends of the push rods extend out of the transverse through groove and then are rotatably connected with clamping balls, and the clamping balls are clamped in the annular clamping groove.

Furthermore, the fixed disc is provided with three fixed insertion holes which penetrate through the fixed disc in a rotating array by taking the axial lead of the fixed disc as a rotating shaft, the three fixed bolts are fixedly inserted into the fixed insertion holes in a one-to-one correspondence manner, and one ends of the fixed bolts, far away from the transmission shaft, extend out of the fixed insertion holes and are then fixed with the limiting disc.

Further, a gap is reserved between the limiting disc and the end part of the planetary gear.

Further, the axis of the annular clamping groove is collinear with the axis of the planet gear.

Furthermore, the diameter of each fixed jack is 5 cm.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

the compression spring, the push rod and the clamping balls are arranged, so that the axial displacement of the planetary gear can be well limited, the compression spring is always in a compression state, the clamping balls connected with two ends can be propped against, and the planetary gear can be more stable when rotating; the planetary gear can be further prevented from coming off by arranging the limiting disc, and a certain gap is reserved between the limiting disc and the end part of the planetary gear, so that the planetary gear can play a role in preventing abrasion on the basis of coming off, and the service life of the planetary gear is prolonged.

Drawings

FIG. 1 is a partial cross-sectional view of a front view of the present invention;

FIG. 2 is a side view of the holding pan of the present invention;

fig. 3 is a partially enlarged schematic view at a of fig. 1.

Wherein the reference numerals are: 1. a drive shaft; 2. fixing the disc; 21. fixing the jack; 3. fixing the bolt; 31. a limiting disc; 32. a transverse through groove; 4. a planetary gear; 41. an annular neck; 51. a compression spring; 52. a push rod; 53. the ball is clamped.

Detailed Description

The present invention will be described in more detail with reference to examples.

As shown in fig. 1 to 3, the starter shaft with a limiting function of the present embodiment includes a transmission shaft 1, a circular fixing plate 2 is fixed at an output end of the transmission shaft 1, three fixing insertion holes 21 penetrating through the fixing plate 2 in a rotating array by taking an axial lead of the fixing plate 2 as a rotating shaft are formed in the fixing plate 2, a fixing plug pin 3 is fixedly inserted into each fixing insertion hole 21, a circular limiting plate 31 is fixed after one end of the fixing plug pin 3 away from the transmission shaft 1 extends out of the fixing insertion hole 21, and a diameter of the limiting plate 31 is larger than a diameter of the fixing plug pin 3; the fixed bolt 3 is rotatably sleeved with a planetary gear 4, an annular clamping groove 41 is formed in the inner ring of the planetary gear 4, a transverse through groove 32 which radially penetrates through the fixed bolt 3 is further formed in the fixed bolt 3, a compression spring 51 which is always in a compression state is arranged in the transverse through groove 32, push rods 52 are fixed at two ends of the compression spring 51, the free end of each push rod 52 extends out of the transverse through groove 32 and then is rotatably connected with a clamping ball 53, and the clamping ball 53 is clamped in the annular clamping groove 41.

Further, a gap is reserved between the limiting disc 31 and the end part of the planetary gear 4, and the limiting disc 31 is prevented from being abraded.

Further, the axis of the ring-shaped clamping groove 41 is collinear with the axis of the planetary gear 4, so that the clamping effect of the planetary gear 4 is better, and the planetary gear 4 is prevented from being disengaged.

Further, the diameter of each fixing insertion hole 21 is 5 cm.

The working principle of the utility model is as follows: through the arrangement of the limiting disc 31, the planetary gear 4 can be effectively prevented from coming off, and a certain gap is reserved between the limiting disc 31 and the end part of the planetary gear 4, so that the anti-wear effect can be achieved on the basis of coming off prevention; through the setting of compression spring 51, push rod 52 and joint ball 53, can play a fine restriction effect to planetary gear 4's axial displacement, compression spring 51 is in compression state all the time, can withstand the joint ball 53 that both ends are connected, also can be more steady when planetary gear 4 rotates simultaneously.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. A starter shaft with a limiting function is characterized in that: the planetary gear transmission mechanism comprises a transmission shaft (1) and a plurality of planetary gears (4), wherein a fixed disc (2) is fixed at the output end of the transmission shaft (1), fixed bolts (3) which are the same in number as the planetary gears (4) and distributed in an annular array are fixed at one end, away from the transmission shaft (1), of the fixed disc (2), the planetary gears (4) are rotatably sleeved on the fixed bolts (3) in a one-to-one correspondence manner, and a limiting disc (31) for preventing the planetary gears (4) from falling off is further fixed at the free end of each fixed bolt (3); an annular clamping groove (41) is formed in the inner ring of the planetary gear (4), a transverse through groove (32) which penetrates through the fixing bolt (3) along the radial direction is further formed in the fixing bolt (3), a compression spring (51) which is in a compression state all the time is arranged in the transverse through groove (32), push rods (52) are fixed to two ends of the compression spring (51), a clamping ball (53) is rotatably connected to the free end of each push rod (52) after extending out of the transverse through groove (32), and the clamping ball (53) is clamped in the annular clamping groove (41).

2. The starter shaft with a limit function according to claim 1, wherein: three fixing insertion holes (21) which penetrate through the fixed disc (2) in a rotating array mode by taking the axial lead of the fixed disc (2) as a rotating shaft are formed in the fixed disc (2), three fixing bolts (3) are fixedly inserted into the fixing insertion holes (21) in a one-to-one correspondence mode, and a limiting disc (31) is fixed to one end, far away from the transmission shaft (1), of each fixing bolt after extending out of the corresponding fixing insertion hole (21).

3. The starter shaft with a limit function according to claim 2, wherein: a gap is reserved between the limiting disc (31) and the end part of the planetary gear (4).

4. The starter shaft with a limit function according to claim 2, wherein: the axial lead of the annular clamping groove (41) is collinear with the axial lead of the planetary gear (4).

5. The starter shaft with a limit function according to claim 2, wherein: the diameter of each fixed insertion hole (21) is 5 cm.