CN202596827U

CN202596827U - Timing chain wheel for crankshaft

Info

Publication number: CN202596827U
Application number: CN 201220282423
Authority: CN
Inventors: 胡景彦; 洪进
Original assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Current assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-12-12
Anticipated expiration: 2022-06-15

Abstract

The utility model discloses a timing chain wheel for a crankshaft, which includes a chain wheel main body (1), wherein an axle hole (2) matched with the crankshaft and lightening holes (3) axially penetrating through the chain wheel main body (1) are arranged on the end surface of the chain wheel main body (1); and three lightening holes (3) are uniformly distributed on the periphery of the end surface of the chain wheel main body (1). The timing chain wheel for the crankshaft is lightened.

Description

Crankshaft timing sprocket

Technical field

The utility model relates to technical field of automobile engine, specifically is crankshaft timing sprocket.

Background technique

Motor is to accomplish the driving that is connected between bent axle and the camshaft through timing system in running, and crankshaft timing sprocket has been played the part of the effect of " bridge " in the motor the inside; Under the drive of bent axle, give corresponding parts with strength transmission, the crankshaft timing sprocket in the motor plays crucial effects in the accurate transmission of power of timing system, and not enough below existing crankshaft timing sprocket exists: crankshaft timing sprocket does not have the loss of weight measure; Make it heavier; Make motor car engine integral body heavier, make the fuel consumption of automobile and pollutant discharge amount bigger, do not meet the light-weighted trend of present automobile; Simultaneously because the weight of crankshaft timing sprocket itself has restriction; The width of its sprocket tooth can't be done greatly, and the smaller words of sprocket tooth width can make the transmission stability of crankshaft timing sprocket poor, and if under the situation that does not have the loss of weight measure, increase the width of sprocket tooth; To make crankshaft timing sprocket overweight, not meet usage requirement.

The model utility content

The utility model technical problem to be solved is that the crankshaft timing sprocket of weight saving is provided.

For solving the problems of the technologies described above; The crankshaft timing sprocket that the utility model provides comprises sprocket body, and the end face of sprocket body is provided with and is used for the axis hole that cooperates with bent axle; Bent axle passes axis hole and passes through bolt in sprocket body; The rotating band movable sprocket body of bent axle is rotated, and the end face of described sprocket body also is provided with the lightening hole that axially runs through sprocket body, and lightening hole is a through hole.

After adopting above structure, the utility model compared with prior art has following advantage:

Sprocket body is provided with lightening hole, and the weight of sprocket body is reduced, and the motor overall weight is reduced; Automotive dead weight is reduced, and the deadweight of automobile reduces by 10%, and its fuel efficiency can improve 15%; The fuel consumption and the pollutant discharge amount of automobile are reduced, because lightening hole has made the crankshaft timing sprocket loss of weight, at this moment can do the axial width of the sprocket tooth of crankshaft timing sprocket greatly simultaneously; Increase transmission stability, the weight of crankshaft timing sprocket own can not exceed prespecified range simultaneously.

As improvement, the quantity of described lightening hole is three and circumferentially evenly distributes along the end face of sprocket body, makes the weight distribution of crankshaft timing sprocket itself even.

As further improvement; Described sprocket body is provided with pin-and-hole; Pin-and-hole is connected with axis hole, and when bent axle and sprocket body during through bolt, bent axle matches with pin-and-hole and makes bent axle circumferentially spacing with respect to the sprocket body quilt; Make the transmission of bent axle and sprocket body effective, can double swerve during use.

Description of drawings

Fig. 1 is the structural representation of the utility model crankshaft timing sprocket;

Fig. 2 is that A-A among Fig. 1 is to sectional view.

Wherein, 1, sprocket body; 2, axis hole; 3, lightening hole; 4, pin-and-hole; 5, sprocket tooth.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.

Structural representation by the utility model crankshaft timing sprocket shown in Figure 1 can know that it comprises sprocket body 1, and the end face of sprocket body 1 is provided with and is used for the axis hole 2 that cooperates with bent axle; Bent axle passes axis hole 2 and passes through bolt in sprocket body 1; The rotating band movable sprocket body 1 of bent axle is rotated, and the end face of described sprocket body 1 also is provided with the lightening hole 3 that axially runs through sprocket body 1, and lightening hole 3 just runs through the through hole of sprocket body 1; Owing to there is lightening hole 3 to reduce the weight of crankshaft timing sprocket; The axial width of the sprocket tooth 5 of crankshaft timing sprocket can be increased, increase the stationarity of its transmission, its weight can not exceed prespecified range simultaneously.

The quantity of described lightening hole 3 is three and circumferentially evenly distributes along the end face of sprocket body 1.

Described sprocket body 1 is provided with pin-and-hole 4, and pin-and-hole 4 is connected with axis hole 2, and pin-and-hole 4 cooperates with crankshaft key makes bent axle circumferentially spacing with respect to sprocket body 1 quilt.

Below only use preferable instance with regard to the utility model and made explanation, but can not be interpreted as it is the restriction to claim, the structure of the utility model can have other variations, is not limited to said structure.In a word, the various variations of being done in the protection domain of all independent claims at the utility model are all in the protection domain at the utility model.

Claims

1. crankshaft timing sprocket; Comprise sprocket body (1); The end face of sprocket body (1) is provided with and is used for the axis hole (2) that cooperates with bent axle, and it is characterized in that: the end face of described sprocket body (1) also is provided with the lightening hole (3) that axially runs through sprocket body (1).

2. crankshaft timing sprocket according to claim 1 is characterized in that: the quantity of described lightening hole (3) is three and circumferentially evenly distributes along the end face of sprocket body (1).

3. crankshaft timing sprocket according to claim 1 is characterized in that: described sprocket body (1) is provided with pin-and-hole (4), and an end of pin-and-hole (4) is connected with axis hole (2).