CN201158311Y - ATV Drive Conversion Safety Mechanism - Google Patents

Abstract

A beach car drive conversion safety mechanism, a buffer plate is installed on the input gear, the buffer plate is provided with a hanging ear facing the output gear, the middle part of the transmission shaft is fixed with a spring support plate, and the spring support plate is provided with a lug facing the input gear. A spring holder is provided between the buffer sheet and the spring support sheet, and the spring holder is looped on the transmission shaft. The outer end of the spring holder is limited by the spring support sheet ear in the circumferential direction. A volute spring is set on the spring holder, the inner end of the volute spring is fixed with the spring holder, and the outer end of the volute spring is hooked on the lug of the buffer sheet. The utility model can play the role of buffering and deceleration when the output gear is stuck, thereby improving the reliability of the conversion of the ATV from two-wheel drive to four-wheel drive, effectively preventing the burnout of the converter motor, and ensuring the safety of the converter. The use performance and service life have the characteristics of novel concept, simple structure, flexible operation, safety and reliability.

Description

ATV Drive Conversion Safety Mechanism

technical field

The utility model relates to a beach car driving device, in particular to a beach car driving conversion safety mechanism.

Background technique

At present, most of the ATVs on the market are driven by the rear wheel drive to move the front wheels (the front wheels have no direct power). The two front wheels of the beach car are installed on the frame through the suspension mechanism, and the two rear wheels are set on the respective rear axle shafts. The power of the beach car is provided by the engine, and the rear end of the engine output shaft is connected to the two rear axle shafts through the rear transmission mechanism, so that the power of the engine is transmitted to the rear axle shaft through the rear transmission mechanism, driving the rear wheels to rotate, and the beach car is completely The car moves forward or backward. Because only the rear wheels of the beach car have driving force, the power is not strong, and the passability is poor. When the beach car is climbing a very inclined slope, it is difficult to run; Skidding makes it difficult to travel, and then problems such as stalling occur.

How to improve the power and passability of ATVs is a difficult problem that all ATV manufacturers are working hard on. Some manufacturers replace the front wheel suspension mechanism of traditional ATVs with a bridge mechanism. The drive box of the bridge mechanism and the engine They are connected by a transmission shaft, and the input spindle and output spindle in the drive box can be connected through a sliding sleeve. The sliding sleeve is controlled by a shift fork. Driven by the shift fork, the sliding sleeve is connected between the input spindle and the output Slip on the main shaft, so that the input main shaft and the output main shaft have two states of engagement and separation, corresponding to the four-wheel drive and two-wheel drive of the ATV. The action of the shift fork is driven by a link mechanism or a rack mechanism. The link mechanism has shortcomings such as bulky, complex operation, poor flexibility and reliability, so it is rarely used; the rack mechanism is controlled by the output gear of the electronically controlled converter. However, when the ATV is converted from two-wheel drive to four-wheel drive, and the splines of the input and output spindles of the drive box are not synchronized temporarily, the sliding sleeve cannot move, the converter motor is still running, and the output gear is stuck due to If it cannot rotate, it is easy to burn out the converter motor, which not only has poor safety, but also has no guarantee for the performance and service life of the converter.

Utility model content

The technical problem to be solved by the utility model is to provide a drive conversion safety mechanism for beach vehicles to improve the safety when the beach vehicle is converted from two-wheel drive to four-wheel drive.

The technical scheme of the utility model is as follows: a safety mechanism for drive conversion of beach vehicles, an input gear is set at one end of the transmission shaft, and an output gear is set at the other end. There is a lug facing the output gear, and the middle part of the transmission shaft is fixed with a spring supporting piece, and the spring supporting piece is provided with a lug facing the input gear, and the spring supporting piece lug is located inside the lug of the buffer piece; A spring fixing seat is arranged between the spring supporting piece and the spring supporting piece, and the spring fixing seat is looped on the transmission shaft. Spring, the inner end of the scroll spring is fixed to the spring holder, and the outer end of the scroll spring is hooked on the lug of the buffer sheet.

In the utility model, the input gear is driven by the output shaft of the electric control converter motor, and the output gear cooperates with the rack mechanism in the drive box. The output gear can rotate forward and reverse. The output gear drives the sliding sleeve to slide back and forth on the input spindle and output spindle of the drive box through the rack mechanism and the shift fork, so that there are two functions of engagement and separation between the input spindle and the output spindle of the drive box. state, to correspond to the four-wheel drive and two-wheel drive of the ATV. Under normal circumstances, the input gear, buffer plate, spring holder, volute spring, spring support plate and output gear rotate synchronously with the transmission shaft; When the splines of the main shaft and the output main shaft are not synchronized temporarily, the converter motor is running, but the output gear cannot rotate due to stagnation. At this time, the volute spring plays the role of buffering and deceleration: the spring fixing seat is blocked by the spring support piece and cannot rotate. Rotate, the buffer plate rotates with the input gear, slowly tighten the volute spring from the outside to the inside, and condense the torque transmitted by the motor on the spring; when the splines of the input spindle and output spindle of the drive box are synchronized, the volute spring Automatic extension, transfer the torque to the output gear, so as to achieve the effect of conversion, effectively prevent the motor from burning, and ensure safety.

In order to simplify the structure, the teeth on the above-mentioned input gear are distributed in an arc shape, the input gear is set on the transmission shaft through a bush, the bush and the transmission shaft are in clearance fit, the buffer plate is set on the bush, the buffer plate, The bushing and the input gear are fixed by riveting, the three are firmly connected and have good synchronization; and when the output gear is stuck, the three and the transmission shaft can rotate relative to each other, so that the scroll spring starts to work.

There are two buckles formed by bending on the above-mentioned buffer sheet, and the two buckles and the hanging ears are distributed in an isosceles triangle to ensure the stability of operation; the bending direction of each buckle is opposite to the hanging ears, and the buckles Snap into the corresponding through hole on the input gear. The buffer sheet is engaged with the input gear through a buckle, which can effectively prevent relative rotation between the two.

In order to prevent the spring supporting piece from rotating relative to the transmission shaft, the spring supporting piece is sleeved on the transmission shaft through a square hole, and the spring supporting piece and the transmission shaft are fixed by riveting.

Beneficial effects: the utility model can play the role of buffering and deceleration when the output gear is stuck, thereby improving the reliability of the conversion of the ATV from two-wheel drive to four-wheel drive, effectively preventing the burnout of the converter motor, and ensuring The performance and service life of the converter have the characteristics of novel concept, simple structure, flexible operation, safety and reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the right side view of Fig. 1 .

Fig. 3 is a schematic diagram of the installation of the input gear and the buffer plate in the utility model.

Fig. 4 is a structural schematic diagram of the spring support piece.

Fig. 5 is a schematic diagram of the connection between the scroll spring and the spring holder.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1 and Figure 2, an input gear 2 is installed on one end of the transmission shaft 1, and an output gear 3 is fitted on the other end. The teeth on the input gear 2 are distributed in an arc shape, the input gear 2 is set on the large diameter section of the stepped bush 8, the bush 8 and the transmission shaft 1 are in clearance fit, and the small diameter section of the bush 8 Set the buffer plate 4, the buffer plate 4 and the output gear 3 are located on the same side of the input gear 2, the buffer plate 4, the bushing 8 and the input gear 2 are fixed by riveting. The rotation of the shaft 1 has good synchronization; when the output gear 3 is stuck, the three can rotate relative to the transmission shaft 1 again.

As shown in Fig. 1, Fig. 2 and Fig. 3, on the buffer sheet 4, there are hanging lugs 4a bent towards the output gear 3, and two buckles 4b bent towards the input gear 2, the two buckles 4b and The hanging ears 4a are distributed in an isosceles triangle, and each buckle 4b is snapped into a corresponding through hole on the input gear 2 . The buffer piece 4 is engaged with the input gear 2 through the buckle 4b, which can effectively prevent the relative rotation between the two.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the installation hole 5b of the spring support piece 5 is a square hole, which is adapted to the shape of the middle part of the transmission shaft 1, and the spring support piece 5 is sleeved on the shaft through the installation hole 5b. The middle part of the transmission shaft 1 is fixed by riveting between the two, which effectively ensures the synchronization of operation. A lug 5 a facing the input gear 2 is provided on the spring support piece 5 , and the lug 5 a of the spring support piece is located inside the lug 4 a of the buffer piece. A spring fixing seat 6 is set between the buffer piece 4 and the spring supporting piece 5, and the spring fixing seat 6 is looped on the transmission shaft 1, and is axially limited by the step on the bushing 8 and the transmission shaft 1, and the spring fixing seat The outer end of 6 is limited in the circumferential direction by the lug 5a on the spring support piece 5 . The scroll spring 7 is sleeved on the spring fixing seat 6 , the inner end of the scroll spring 7 is clipped and fixed with the spring fixing seat 6 , and the outer end of the scroll spring 7 is hooked on the buffer lug 4a.

In the utility model, the input gear 2 is driven by the output shaft of the electric control converter motor, the output gear 3 cooperates with the rack mechanism in the drive box, and the output gear 3 can rotate forward and backward. Under normal circumstances, the input gear 2, the buffer plate 4, the spring holder 6, the scroll spring 7, the spring support plate 5 and the output gear 3 rotate synchronously with the transmission shaft 1 (shown counterclockwise in FIG. 2 ). But when the converter motor is running and the output gear 3 cannot rotate due to being stuck, the scroll spring 7 acts as a buffer to slow down, and the spring holder 6 is blocked by the spring supporting piece lug 5a so that it cannot rotate. 4 Rotate counterclockwise with the input gear 2 (see Figure 2), and the buffer lug 4a slowly winds the scroll spring 7 tightly from the outside to the inside, condensing the torque transmitted by the motor on the spring 7; when the output gear 3 When the cause of the stagnation is eliminated, the scroll spring 7 automatically stretches to transmit the rotational force to the output gear 3, thereby effectively preventing the motor from being burned and ensuring safety.

Claims (4)

1, a kind of beach buggy drives the conversion safety gear, end suit input gear (2) at transmission shaft (1), other end suit output gear (3), it is characterized in that: go up at described input gear (2) buffer substrate tablet (4) is installed, this buffer substrate tablet (4) is provided with the hangers (4a) towards output gear (3), the middle part fixing spring supporting blade (5) of described transmission shaft (1), this spring supporting blade (5) is provided with the journal stirrup (5a) towards input gear (2), and spring supporting blade journal stirrup (5a) is positioned at the inboard of buffer substrate tablet hangers (4a); Between described buffer substrate tablet (4) and spring supporting blade (5), spring fixed seat (6) is set, spring fixed seat (6) kink is on transmission shaft (1), the outer end of this spring fixed seat (6) is circumferentially spacing by spring supporting blade journal stirrup (5a), go up suit volute spring (7) at described spring fixed seat (6), the inner of this volute spring (7) and spring fixed seat (6) fix, and the outer end of volute spring (7) is articulated on the described buffer substrate tablet hangers (4a).

2, beach buggy according to claim 1 drives the conversion safety gear, it is characterized in that: the tooth on the described input gear (2) is circular arc and distributes, input gear (2) is sleeved on the transmission shaft (1) by lining (8), free-running fit between lining (8) and the transmission shaft (1), described buffer substrate tablet (4) is sleeved on the lining (8), passes through riveted and fixed between buffer substrate tablet (4), lining (8) and input gear (2) three.

3, beach buggy according to claim 1 and 2 drives the conversion safety gear, it is characterized in that: on described buffer substrate tablet (4), be provided with two buckles that form by bending (4b), two buckles (4b) are equicrural triangle with hangers (4a) and distribute, the overbending direction of each buckle (4b) is opposite with hangers (4a), and buckle (4b) snaps in the last cooresponding through hole of input gear (2).

4, beach buggy according to claim 1 drives the conversion safety gear, and it is characterized in that: described spring supporting blade (5) is sleeved on the transmission shaft (1) by square hole, passes through riveted and fixed between spring supporting blade (5) and the transmission shaft (1).

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