CN210218611U - Three-gear active combination gear - Google Patents

Abstract

The utility model is suitable for a gear technical field provides a three-gear initiative combination gear, including the gear body, the lateral wall of gear body is provided with the rim, the central point department of gear body runs through and is provided with the shaft hole, the surface of gear body has seted up the keyway, the rim includes front end face, flank of tooth and rear end face, front end face and rear end face are located the both ends of flank of tooth, and the area of front end face is less than the area of rear end face; the both sides width through setting up preceding terminal surface is less than the both sides width of rear end face, and the upper base of flank of tooth is the upper base of preceding terminal surface, the lower base of flank of tooth is the upper base of rear end face, it is big to cause the tooth on the whole rim to set up to the rear end, the front end is little, when three grades of initiative combination gears carried out the translation meshing, owing to shortened the area of both contact surfaces terminal surface before promptly, let out more spaces than original both ends same size and carry out fault-tolerant, the position when having avoided two to carry out the crisscross is not just caused blocks and pauses.

Description

Three-gear active combination gear

Technical Field

The utility model belongs to the technical field of the gear, especially, relate to a three-gear initiative combination gear.

Background

The gear is a mechanical element with a rim on which the gear is continuously meshed to transmit motion and power, the gear is applied in transmission for a long time, at the end of the 19 th century, the principle of generating a gear cutting method and the successive appearance of a special machine tool and a cutter for cutting the gear by using the principle are realized, and the running stability of the gear is emphasized along with the development of production.

When a three-gear driving combination gear in the existing automobile transmission is correspondingly meshed with a three-gear driven gear, the three-gear driving combination gear and the three-gear driven gear are in translation, and sometimes the positions are not correct, so that the phenomenon of conversion jamming is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a third gear initiative combination gear aims at solving the third gear initiative combination gear among the present automotive transmission and when corresponding the meshing with third gear driven gear, because be the translation between the two, sometimes the position is just, causes the phenomenon problem that the conversion card pauses easily.

The utility model discloses a realize like this, a third gear initiative combines gear, including the gear body, the lateral wall of gear body is provided with the rim, the central point of gear body puts the department and runs through and is provided with the shaft hole, the keyway has been seted up to the surface of gear body, the rim includes preceding terminal surface, flank of tooth and rear end face, preceding terminal surface with the rear end face is located the both ends of flank of tooth, just the area of preceding terminal surface is less than the area of rear end face.

Preferably, the front end face and the rear end face are both trapezoidal, and the length of the upper bottom and the length of the lower bottom of the front end face are both shorter than that of the rear end face.

Preferably, the tooth surface is inclined, and two ends of the tooth surface are respectively and fixedly connected with the upper bottoms of the front end surface and the rear end surface.

Preferably, the tooth surface is trapezoidal, the upper bottom of the tooth surface is the upper bottom of the front end surface, and the lower bottom of the tooth surface is the upper bottom of the rear end surface.

Preferably, the tooth surface is provided with a plurality of tooth surfaces, and the tooth surfaces uniformly surround the outer surface of the wheel rim.

Preferably, the number of the key slots is two, and the two key slots are respectively located on two outer surfaces of the gear body.

Preferably, the inside of the shaft hole is provided with an engaging groove, and the engaging groove is engaged with the external rotating shaft.

Preferably, six engaging grooves are formed in the shaft hole in a surrounding manner.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a three grades of initiative combination gears, both sides width through terminal surface before setting up is less than the both sides width of rear end face, and the upper base of flank of tooth is the upper base of preceding terminal surface, the lower base of flank of tooth is the upper base of rear end face, it is big to cause the tooth setting on the whole rim to be the rear end, the front end is little, when three grades of initiative combination gears carry out the translation meshing, because the area of terminal surface before both contact surfaces are promptly shortened, let out more spaces than original both ends the same size and carry out fault-tolerant, the position when having avoided two to carry out the mistake is not the card that causes is dun.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall front view structure of the present invention;

fig. 3 is a schematic view of the overall front structure of the present invention;

fig. 4 is a schematic view of the overall back structure of the present invention;

fig. 5 is a schematic view of the overall side structure of the present invention;

FIG. 6 is a schematic view of the whole structure of the present invention;

in the figure: 1. a gear body; 11. a rim; 111. a front end face; 112. a tooth surface; 113. a rear end face; 12. A shaft hole; 13. a keyway.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a third gear driving gear body 1, includes gear body 1, and gear body 1's lateral wall is provided with rim 11, and gear body 1's central point puts the department and runs through and be provided with shaft hole 12, and keyway 13, its characterized in that have been seted up to gear body 1's surface: the rim 11 includes a front end surface 111, a tooth surface 112, and a rear end surface 113, the front end surface 111 and the rear end surface 113 are located at both ends of the tooth surface 112, and the area of the front end surface 111 is smaller than that of the rear end surface 113.

In this embodiment, when in use, firstly, the rotation shaft in the transmission rotates to drive the gear body 1 to rotate through the shaft hole 12, and simultaneously, the rotation shaft translates to drive the gear body 1 on the outer surface thereof to translate, when the third-gear driving gear body moves towards the third-gear driven gear body, firstly, the front end surface 111 of the rim 11 of the third-gear driving gear body is in inserted engagement with the front end surface 111 of the rim 11 of the third-gear driven gear body until the front end surface 111 of the third-gear driving gear body is flush with the rear end surface 113 of the third-gear driven gear body, that is, the tooth surfaces 112 between the two gear bodies 1 are in overall engagement, so as to realize transmission between gears.

Further, the front end surface 111 and the rear end surface 113 are both configured as trapezoids, and the length of the upper bottom and the lower bottom of the front end surface 111 is shorter than that of the rear end surface 113.

In the present embodiment, the lengths of the upper bottom and the lower bottom of the front end surface 111 are both smaller than the lengths of the upper bottom and the lower bottom of the rear end surface 113, so that the two sides of the front end surface 111 are narrower than the two sides of the rear end surface 113, and the tooth surface 112 is formed into a trapezoid shape, when the three-gear driving gear body 1 and the three-gear driven gear body 1 are engaged, the front end surface 111 between the two is smaller than the original one, more staggered spaces are left, which is convenient for parallel staggering between the two, and then the two are engaged.

Further, the tooth surface 112 is disposed to be inclined, and both ends are fixedly connected to the upper bottoms of the front end surface 111 and the rear end surface 113, respectively.

In this embodiment, the angled flanks 112 are arranged to allow more freedom in the position of the shaft than the flat flanks 112, e.g. a differential drive shaft with bevel teeth does not necessarily have to be in the same horizontal plane as the rear shaft, which is necessary if the bevel teeth are flat, and noise reduction, the bevel teeth being less noisy than the flat teeth at the same rotational speed, because the surfaces of the bevel teeth are in point contact, then transition to surface contact, and finally point contact, the flat teeth being in line-line contact. The transition of the helical teeth is smoother and therefore less noisy than the flat teeth due to the sudden change in contact.

Further, the tooth surface 112 is trapezoidal, and the upper bottom of the tooth surface 112 is the upper bottom of the front end surface 111, and the lower bottom of the tooth surface 112 is the upper bottom of the rear end surface 113.

In the present embodiment, the upper bottom of the tooth surface 112 is the upper bottom of the front end surface 111, and the lower bottom is the upper bottom of the rear end surface 113, so that the entire tooth surface 112 is in a trapezoidal shape, when the three-gear driving gear body 1 and the three-gear driven gear body 1 are engaged, the upper bottom end of the trapezoidal tooth surface 112, i.e., the front end surface 111, preferentially contacts the lower three-gear driven gear body 1, and because the area of the front end surface 111 is small, a large fault-tolerant space is provided, and a cogging phenomenon between the two is reduced.

Further, the tooth surface 112 is provided in plural and uniformly surrounds the outer surface of the rim 11.

In the present embodiment, the plurality of tooth surfaces 112 are provided to distinguish the tooth surfaces from the other drive gears to realize different rotation speeds, and to facilitate meshing engagement with the lower three-speed driven gear body 1 to realize speed transmission.

Further, two key grooves 13 are provided, respectively located on two outer surfaces of the gear body 1.

In this embodiment, the key slot 13 is provided for being driven by a rotating shaft in the transmission in a limiting manner, so as to translate the gear body 1 left and right, and further realize the engagement between the three-gear driving gear body 1 and the three-gear driven gear body 1, and realize the transmission of the rotating speed and the torque.

Furthermore, an engagement groove is formed in the shaft hole 12 and is engaged with an external rotating shaft; six engaging grooves are arranged and are arranged around the inner side wall of the shaft hole 12.

In this embodiment, the inside of the shaft hole 12 is provided with a meshing groove for meshing with a rotating shaft in an external transmission, so that the rotating shaft in the transmission is clamped by the meshing groove, force is transmitted to the third-gear driving gear body 1 to drive the third-gear driven gear body 1 to rotate, and further the rotation is transmitted in a third-gear manner.

The utility model discloses a theory of operation and use flow: firstly, a rotating shaft in the gearbox rotates to drive a gear body 1 to rotate through a shaft hole 12, and simultaneously, the rotating shaft translates to drive the gear body 1 on the outer surface of the gear body to translate, when a third-gear driving gear body moves towards a third-gear driven gear body, firstly, a front end face 111 of a rim 11 of the third-gear driving gear body is in splicing engagement with a front end face 111 of the rim 11 of the third-gear driven gear body until the front end face 111 of the third-gear driving gear body is flush with a rear end face 113 of the third-gear driven gear body, namely, a tooth face 112 between two gear bodies 1 is in complete engagement, and transmission between gears is realized.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a third gear initiative combines gear, includes gear body (1), the lateral wall of gear body (1) is provided with rim (11), the central point department of putting of gear body (1) runs through and is provided with shaft hole (12), keyway (13), its characterized in that have been seted up to the surface of gear body (1): the wheel rim (11) comprises a front end face (111), a tooth face (112) and a rear end face (113), the front end face (111) and the rear end face (113) are located at two ends of the tooth face (112), and the area of the front end face (111) is smaller than that of the rear end face (113).

2. A third speed positive engagement gear according to claim 1, wherein: the front end face (111) and the rear end face (113) are both trapezoidal, and the length of the upper bottom and the length of the lower bottom of the front end face (111) are both shorter than the length of the rear end face (113).

3. A third speed positive engagement gear according to claim 2, wherein: the tooth surface (112) is inclined, and two ends of the tooth surface are respectively fixedly connected with the upper bottoms of the front end surface (111) and the rear end surface (113).

4. A third speed positive engagement gear according to claim 3, wherein: the tooth surface (112) is trapezoidal, the upper bottom of the tooth surface (112) is the upper bottom of the front end surface (111), and the lower bottom of the tooth surface (112) is the upper bottom of the rear end surface (113).

5. A third speed positive engagement gear according to claim 1, wherein: the tooth surfaces (112) are arranged in a plurality and uniformly surround the outer surface of the wheel rim (11).

6. A third speed positive engagement gear according to claim 1, wherein: the number of the key grooves (13) is two, and the two key grooves are respectively located on two outer surfaces of the gear body (1).

7. A third speed positive engagement gear according to claim 1, wherein: the inside of the shaft hole (12) is provided with an engaging groove, and the engaging groove is engaged with an external rotating shaft.

8. A third speed positive engagement gear according to claim 7, wherein: six engaging grooves are formed in the shaft hole (12) in a surrounding mode.

Images