阅读说明：本技术 一种连轴器及电动相位调节系统 (Coupling and electric phase adjusting system ) 是由 蒋长路 陈鹏 邓猛 胡荣 于 2019-09-25 设计创作，主要内容包括：本发明提供一种连轴器及电动相位调节系统,所述连轴器包括连接杆、弹性元件、滑移板和滚球体,在连接杆上形成凹部,在滑移板上形成滑槽；连接杆上的连接配合部与滑移板上的通孔之间形成间隙配合结构,弹性元件设置在滑移板外侧,在相对的凹部与滑槽之间设置滚球体；当滚球体相对于滑槽窜位时,滑移板在相对于连接杆运动过程中与弹性元件配合而使滚球体复位,复位后的滚球体使连接杆与滑移板形成同步旋转。通过弹性元件的弹性力大小来限制连接杆的输出扭矩,可保证连轴器自身的工作安全性与可靠性,当连轴器与相位器连接时,还可通过连轴器对允许传递的最大扭矩进行限制来实现对相位器的保护,提高了电动相位调节系统的工作可靠性。(The invention provides a coupling and an electric phase adjusting system, wherein the coupling comprises a connecting rod, an elastic element, a sliding plate and a rolling ball body, a concave part is formed on the connecting rod, and a sliding groove is formed on the sliding plate; a clearance fit structure is formed between the connecting fit part on the connecting rod and the through hole on the sliding plate, the elastic element is arranged on the outer side of the sliding plate, and a rolling ball body is arranged between the opposite concave part and the sliding groove; when the rolling ball body is shifted relative to the sliding groove, the sliding plate is matched with the elastic element in the movement process relative to the connecting rod to reset the rolling ball body, and the reset rolling ball body enables the connecting rod and the sliding plate to synchronously rotate. The output torque of the connecting rod is limited through the elastic force of the elastic element, the working safety and reliability of the coupling can be guaranteed, when the coupling is connected with the phaser, the maximum torque allowed to be transmitted can be limited through the coupling to protect the phaser, and the working reliability of the electric phase adjusting system is improved.)

1. A coupling comprising a connecting rod (21), characterized in that: the connecting rod (21) is provided with a concave part (213), and the sliding plate (24) is provided with a sliding groove (242); a clearance fit structure is formed between a connecting fit part (212) on the connecting rod (21) and a through hole (241) on the sliding plate (24), the elastic element (23) is arranged on the outer side of the sliding plate (24), and a rolling ball body (25) is arranged between the opposite concave part (213) and the sliding groove (242); when the rolling ball body (25) is shifted relative to the sliding groove (242), the sliding plate (24) is matched with the elastic element (23) in the process of moving relative to the connecting rod (21) to reset the rolling ball body (25), and the reset rolling ball body (25) enables the connecting rod (21) and the sliding plate (24) to synchronously rotate.

2. A coupling as defined in claim 1, wherein: the sliding device is characterized by further comprising a limiting block (22), the limiting block (22) is fixedly connected with the connecting rod (21), and the elastic element (23) is arranged between the limiting block (22) and the sliding plate (24).

3. A coupling as claimed in claim 2, wherein: the elastic element (23) is a disc spring, and the relatively larger end of the elastic element is contacted with the sliding plate (24) and the relatively smaller end of the elastic element is contacted with the limiting block (22).

4. A coupling according to any one of claims 1 to 3, wherein: the concave part (213) on the connecting rod (21) is a sinking groove with a concave spherical structure.

5. A coupling according to any one of claims 1 to 3, wherein: connecting rod (21) be T shape structure pole, its relative great end form backstop portion (211), relative less end form connect cooperation portion (212), concave part (213) set up on backstop portion (211), elastic element (23) be located the relative both sides of slide block (24) respectively.

6. An adapter according to claim 5, wherein: the connecting rod (21) is of a hollow shaft structure.

7. A coupling according to any one of claims 1 to 3, wherein: the sliding grooves (242) on the sliding plate (24) are provided with a plurality of sliding grooves (242), the sliding grooves (242) are distributed radially around the center of the sliding plate (24), the concave parts (213) on the connecting rod (21) are provided with a plurality of sliding grooves, and rolling balls (25) are arranged between the opposite concave parts (213) and the sliding grooves (242).

8. An electric phase adjustment system comprising an electric motor (1) and a phaser (3), characterized in that: the coupler of any one of claims 1-7 is further included, a fixed connection structure for synchronous rotation is formed between the connecting rod (21) on the coupler and the output shaft of the motor (1), and a fixed connection structure for synchronous rotation is formed between the sliding plate (24) on the coupler and the input end of the phaser (3).

Technical Field

The invention relates to the field of electric phase adjustment design, in particular to a coupling and an electric phase adjustment system.

Background

An electric phase adjustment system generally includes a motor 1, a coupling 2, and a phaser 3, as shown in fig. 1, in which the motor 1 serves as a power source for driving phase adjustment, and the phaser 3 is a planetary reduction gear and is provided with a phase adjustment angle restriction. During phase adjustment, the motor 1 converts electric energy into kinetic energy according to an instruction of a control system, transmits the kinetic energy to the phaser 3 through the coupling 2, outputs rotating speed and torque after being adjusted by the phaser 3, and finally completes phase adjustment under the condition that the rotating speed and the torque are obtained by the camshaft 4.

However, when the command input to the motor by the control system is abnormal, the motor may output a large torque in a short time, resulting in an unrecoverable damage to the coupling or the phaser; alternatively, when the phaser collides at the phase adjustment angle limit position, a large torque is generated in a short time, resulting in unrecoverable breakage of the phaser, the coupling, or the motor. In addition, the existing coupling is complex in structural design, so that the manufacturing cost of the coupling is increased on one hand, and the reliability of the coupling in the working process is reduced on the other hand.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, the coupling and the electric phase adjusting system are simpler in structure and higher in working reliability.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: a shaft coupling comprises a connecting rod, an elastic element, a sliding plate and a rolling ball body, wherein a concave part is formed on the connecting rod, and a sliding groove is formed on the sliding plate; a clearance fit structure is formed between the connecting fit part on the connecting rod and the through hole on the sliding plate, the elastic element is arranged on the outer side of the sliding plate, and a rolling ball body is arranged between the opposite concave part and the sliding groove; when the rolling ball body is shifted relative to the sliding groove, the sliding plate is matched with the elastic element in the movement process relative to the connecting rod to reset the rolling ball body, and the reset rolling ball body enables the connecting rod and the sliding plate to synchronously rotate.

Preferably, the sliding device further comprises a limiting block, the limiting block is fixedly connected with the connecting rod, and the elastic element is arranged between the limiting block and the sliding plate.

Preferably, the elastic element is a disc spring, and a relatively larger end of the disc spring is contacted with the sliding plate, and a relatively smaller end of the disc spring is contacted with the limiting block.

Preferably, the concave part on the connecting rod is a sinking groove with a concave spherical structure.

Preferably, the connecting rod is a T-shaped structural rod, a stopping portion is formed at a relatively larger end of the connecting rod, a connecting matching portion is formed at a relatively smaller end of the connecting rod, the concave portion is arranged on the stopping portion, and the stopping portion and the elastic element are respectively located at two opposite sides of the sliding plate.

Preferably, the connecting rod is of a hollow shaft structure.

Preferably, the sliding grooves on the sliding plate are arranged in a plurality, the sliding grooves are distributed radially around the center of the sliding plate, the concave parts on the connecting rods are arranged in a plurality, and rolling bodies are arranged between the opposite concave parts and the sliding grooves.

An electric phase adjusting system comprises a motor, a phaser and the coupler, wherein a fixed connecting structure capable of rotating synchronously is formed between a connecting rod on the coupler and an output shaft of the motor, and a fixed connecting structure capable of rotating synchronously is formed between a sliding plate on the coupler and an input end of the phaser.

Compared with the prior art, the invention has the beneficial effects that: when the coupling normally works, the rolling ball body is simultaneously positioned between the concave part on the connecting rod and the sliding groove on the sliding plate through the elastic element to ensure that the connecting rod and the sliding plate form synchronous rotation, however, when the sliding plate is subjected to larger resistance moment to cause the rolling ball body to shift relative to the sliding groove, the sliding plate axially moves relative to the connecting rod, the elastic element is compressed, the sliding plate is matched with the elastic element in the movement process relative to the connecting rod to reset the rolling ball body, the reset rolling ball body causes the connecting rod and the sliding plate to form synchronous rotation, the structure is simpler, the output torque of the connecting rod can be limited according to the elastic force of the elastic element, the working safety and the reliability of the coupling are further ensured, when the coupling is connected with the phaser, the maximum torque allowed to be transmitted can be limited through the coupling to realize the protection of the phaser, therefore, the working reliability of the electric phase adjusting system is improved, and when the rolling ball body is reset, the function of the coupling is realized again, and the torque transmission under the next normal working condition is still not influenced.

Drawings

Fig. 1 is a schematic diagram of an electric phase adjustment system.

Fig. 2 is a schematic view showing a construction of a coupling (electric phase adjusting system) according to the present invention.

Fig. 3 is an exploded view of a coupling according to the present invention.

Fig. 4 is a schematic structural view of the connecting rod in fig. 3.

Fig. 5 is a schematic structural view of the slide plate in fig. 3.

Part label name in the figure: 1-motor, 2-coupling, 3-phaser, 4-camshaft, 21-connecting rod, 22-limiting block, 23-elastic element, 24-sliding plate, 25-rolling ball body, 211-stopping block, 212-connecting matching part, 213-concave part, 241-through hole and 242-sliding groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific 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.

The electric phase adjusting system shown in fig. 1 comprises a motor 1, a coupling 2, a phaser 3 and a camshaft 4, wherein the coupling 2 is mainly composed of a connecting rod 21, an elastic element 23, a sliding plate 24 and a ball body 25, a concave part 213 is formed on the connecting rod 21, a through hole 241 and a sliding groove 242 are respectively formed on the sliding plate 24, and the ball body can be made of steel balls, as shown in fig. 2 and 3. Generally, the connecting rod 21 is a T-shaped structural rod, a relatively larger end of which forms a stopping portion 211, a relatively smaller end of which forms a connecting matching portion 212, and the concave portion 213 is disposed on the stopping portion 211, as shown in fig. 3 and 4. The connection fitting part 212 and the through hole 241 on the sliding plate 24 form a clearance fit structure, and the elastic element 23 is arranged outside the sliding plate 24, so that the stopping part 211 and the elastic element 23 are respectively located at two opposite sides of the sliding plate 24. The concave part 213 of the connecting rod 21 is opposite to the sliding slot 242 of the sliding board 24, the rolling ball 25 is arranged between the opposite concave part 213 and the sliding slot 242, and when the rolling ball 25 is shifted relative to the sliding slot 242, the sliding board 24 is matched with the elastic element 23 in the process of moving relative to the connecting rod 21 to reset the rolling ball 25, and the reset rolling ball 25 enables the connecting rod 21 and the sliding board 24 to synchronously rotate.

The connecting rod 21 may adopt a hollow shaft structure, so that a fixed connection structure for synchronous rotation is formed between the connecting rod 21 and the output shaft of the motor 1, and a fixed connection structure for synchronous rotation, such as a key connection structure, an interference fit structure, etc., is formed between the sliding plate 24 and the input end of the phaser 3. The rolling ball 25 is located between the sliding board 24 and the connecting rod 21 and is axially supported by the elastic force generated by the elastic element 23. The coupling 2 is used to transmit the rotational speed and torque of the electric machine 1 to the phaser 3, while limiting the maximum torque that can be transmitted. In particular, the amount of the solvent to be used,

when the coupling 2 works normally, one part of the rolling ball body 25 is located in the concave part 213 on the connecting rod 21, the other part of the rolling ball body falls into the sliding groove 242 on the sliding plate 24, the connecting rod 21 rotates synchronously with the output shaft of the motor 1, and the rotating motion of the connecting rod 21 is transmitted to the sliding plate 24 through the rolling ball body 25, so that the connecting rod 21 and the sliding plate 24 rotate synchronously; the slide plate 24 in turn transmits rotational motion to the phaser 3, thereby enabling torque transmission from the motor 1 to the phaser 3.

However, when the resisting torque applied to the sliding plate 24 reaches or exceeds a design value, which depends on the magnitude of the elastic force generated by the elastic element 23, the sliding groove 242 on the sliding plate 24 and the ball body 25 will generate relative movement, so that the sliding plate 24 generates axial displacement and circumferential rotation relative to the connecting rod 21, the axial displacement space comes from the compression of the elastic element 23, and the circumferential rotation thereof can cause the ball body 25 to shift relative to the sliding groove 242, i.e. the sliding plate 24 slips relative to the connecting rod 21, so that the torque transmission between the two can be blocked, the torque transmitted from the motor 1 to the phaser 3 is limited, and the phaser 3, the motor 1 and the coupling 2 are further protected.

When the protection function of the coupling 2 is completed, the rolling ball 25 may be located in the sliding groove 242 of the sliding plate 24, and at this time, the coupling is restored to the normal state; the rolling ball 25 may be located outside the sliding slot 242 of the sliding board 24, and the torque value for causing the rolling ball 25 to move relatively to the sliding board 24 is much smaller than the torque value for causing the rolling ball 25 to move relatively to the sliding board 24 when the rolling ball is located in the sliding slot 242. When the motor 1 is restarted and drives the connecting rod 21 to start rotating, the ball body 25 will start rotating relative to the sliding plate 24 under the influence of the recess 213 on the connecting rod 21 on the limitation of the degree of freedom until the ball body falls into the sliding groove 242 on the sliding plate 24, namely, the coupling is restored to the normal state.

In order to further improve the working safety and reliability protection of the coupling 2, a plurality of sliding grooves 242 may be arranged on the sliding plate 24, and the plurality of sliding grooves 242 are radially distributed around the center of the sliding plate 24, as shown in fig. 5; correspondingly, a plurality of concave parts 213 are also arranged on the connecting rod 21, the concave parts 213 are preferably concave spherical structure sinking grooves, and rolling balls 25 are arranged between the opposite concave parts 213 and the sliding grooves 242. In addition, a limit block 22 can be fixedly connected with the connecting rod 21, and an elastic element 23 is arranged between the limit block 22 and the sliding plate 24. Generally, the elastic element 23 is a disc spring, and a relatively larger end of the disc spring is in contact with the sliding plate 24, and a relatively smaller end of the disc spring is in contact with the stopper 22, so that the stopper 22 can limit the axial space of the elastic element 23 and the sliding plate 24, as shown in fig. 2. Of course, the elastic element 23 may also be a common cylindrical spring, and if the stopper 22 is eliminated, one end of the elastic element 23 may be fixedly connected to the connecting rod 21, and the other end of the elastic element 23 may contact the sliding plate 24.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.