CN219081714U - Throttle valve opening and closing structure - Google Patents

Abstract

The utility model discloses a throttle opening and closing structure, which comprises a throttle shell, a throttle shaft rotatably arranged in the throttle shell, door sheets arranged on two sides of the throttle shaft and reinforcing ribs arranged on the throttle shell and the throttle shaft, wherein one side of the throttle shell is provided with a connecting lug, the throttle shaft is rotatably arranged in the connecting lug, the other side of the throttle shell is provided with a mounting frame, a stepping motor is arranged in the mounting frame, and the rotating angle of the stepping motor is controlled by a throttle driving circuit module. The packing ring on the right side is pressed by the pressing ring, so that the packing ring is forced to be pressed on a cavity on the right side of the slotting, the left end of the throttle shaft and the rotor shaft of the stepping motor, and the nano-scale spherical graphite powder can be effectively fed in through the elastic support of the spring, so that the tightness is ensured, and the situation that the fast flowing air part in the throttle valve shell can enter into the matching area of the rotor shaft of the stepping motor and the throttle shaft can be avoided.

Description

Throttle valve opening and closing structure

Technical Field

The utility model belongs to the technical field of throttle valves, and particularly relates to a throttle valve opening and closing structure.

Background

An electronic throttle system is commonly adopted in modern automobiles, a driver manipulates an accelerator pedal, a corresponding voltage signal is generated by an accelerator pedal position sensor and is input into a throttle valve driving circuit module, the driving circuit module firstly filters the input signal to eliminate the influence of environmental noise, then the intention of the driver is analyzed according to the current working mode, pedal movement amount and change rate, the basic requirement on the engine torque is calculated, and a corresponding basic expected value of the throttle valve rotation angle is obtained. And then the vehicle driving circuit module is communicated with the CAN bus to acquire other working condition information and various sensor signals such as engine speed, gear, throttle position, air conditioner energy consumption and the like, so that all the torque required by the vehicle is calculated, the optimal opening of the throttle valve is obtained by compensating the expected value of the throttle valve rotation angle, and corresponding voltage signals are sent to the driving circuit module to drive the control motor so that the throttle valve reaches the optimal opening position.

The main body of the throttle opening and closing structure comprises a stepping motor and a throttle shaft connected with a rotor shaft of the stepping motor, the throttle shaft is driven to rotate by the rotor shaft of the stepping motor, so that a door sheet positioned in a throttle shell is rotated, the opening and closing purposes are realized, the patent of the utility model with the bulletin number of CN207111249U is issued, the throttle is disclosed, and one end of the motor 2 is connected with an output gear 21; a torque transmission device 3 engaged with the output gear 21; a throttle shaft 4 fixedly connected with the torque transmission device 3, the throttle shaft 4 passes through the air flow channel 11 and is supported by a first mounting hole 6 near the torque transmission device and a second mounting hole 7 on the opposite side of the housing 1, more specifically, a needle bearing 60 is installed in the first mounting hole 6, a bushing 70 is installed in the second mounting hole 7, two ends of the throttle shaft 4 are respectively inserted into the needle bearing 60 and the bushing 70, and the needle bearing 60 and the bushing 70 support the throttle shaft 4; the butterfly valve 5 arranged on the throttle shaft 4 and positioned in the air flow channel 11 adopts an opening and closing structure comprising a motor 2, an output gear 21, a torque transmission device 3 and the throttle shaft 4, wherein the motor 2 drives the output gear 21 to rotate, the throttle shaft 4 is driven to rotate under the action of the torque transmission device 3, and the needle bearing 60 and the bushing 70 are adopted for bearing rotation and sealing at the joint of the torque transmission device 3 and the throttle shaft 4, so that the defects are that: because the throttle valve is provided with fast flowing air for a long time, the joint of the motor and the throttle shaft is plugged by adopting the bushing, and the bushing is worn out greatly due to long-term rotation operation, under the condition, the tightness of the bushing is greatly reduced, so that the fast flowing air in the throttle valve shell partially penetrates into the area, and the aging of the area is accelerated.

Disclosure of Invention

The utility model aims to provide a throttle valve opening and closing structure so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a throttle valve structure of opening and shutting, includes throttle valve casing, rotation setting in the throttle valve casing the throttle valve axle, set up in the piece of throttle valve axle both sides and set up at throttle valve casing and the epaxial strengthening rib of throttle valve, one side of throttle valve casing is provided with connects protruding, the throttle valve axle rotates to set up in connecting protruding, the opposite side of throttle valve casing is provided with the mounting bracket, be provided with step motor and step motor by its corner of throttle valve drive circuit module control in the mounting bracket, one side is equipped with the fluting in the throttle valve casing, slide in the fluting and be provided with clamping ring and clamping ring cover and establish on step motor's rotor shaft, still be provided with elastic support in the fluting the elastic support structure of clamping ring, just be located the grooved opposite side and filled with the packing ring in the fluting.

Preferably, the connecting protrusion is sleeved with a screw cap, the connecting protrusion is provided with a baffle ring, an inserting protrusion is arranged at the center of one end of the throttle shaft, the inserting protrusion penetrates through the screw cap and penetrates through one end of the screw cap in a threaded manner, a step hole is formed in the connecting protrusion, the throttle shaft penetrates through the step hole, and a sealing bearing and an inner ring of the throttle shaft penetrate through the sealing bearing are arranged in the step hole.

Preferably, the elastic support structure comprises connecting pipes which are uniformly arranged in the grooves in the circumferential direction, springs are arranged in the connecting pipes, the connecting pipes and the springs are sleeved with cover covers, and the cover covers are provided with pressing columns which are pressed on the pressing rings.

Preferably, one end of the throttle shaft inserted into the slot is provided with a concurrent slot, and the concurrent slot is a circular groove with a triangular section.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the sealing bearing is arranged, so that the rotation of the throttle shaft can be stably supported, the stepped hole has good sealing performance, under the elastic supporting effect of the spring uniformly arranged in the circumferential direction, the compression ring compresses the right packing ring to force the packing ring to be covered on the right cavity of the slot, the left end of the throttle shaft and the rotor shaft of the stepping motor, under the penetration of nano spherical graphite powder, the matching gap between the sealing compression ring and the stepping motor and the matching gap between the throttle shaft and the inner wall of the slot are realized, and the nano spherical graphite powder can be effectively fed in through the elastic support of the spring while self consumption of the nano spherical graphite powder is realized, so that the sealing performance is ensured, and the phenomenon that the fast flowing air part in the throttle shell can enter the matching region of the rotor shaft of the stepping motor and the throttle shaft is avoided.

Drawings

FIG. 1 is a schematic front view of the present utility model;

FIG. 2 is a schematic view in partial cutaway of FIG. 1;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

In the figure: the throttle valve comprises a throttle valve shell body 1, a throttle valve shaft 2, a gate sheet 3, a reinforcing rib 4, a connecting protrusion 5, a rotary cover 6, a baffle ring 7, a sealing bearing 8, a screw 9, a stepping motor 10, a slot 11, a connecting pipe 12, a spring 13, a cover 14, a pressing column 15, a compression ring 16, a packing ring 17 and a slot 18.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a throttle opening and closing structure, including a throttle housing 1, a throttle shaft 2 rotatably disposed in the throttle housing 1, a gate sheet 3 disposed at both sides of the throttle shaft 2, and a reinforcing rib 4 disposed on the throttle housing 1 and the throttle shaft 2, a connection protrusion 5 integrally disposed on the right side of the throttle housing 1, the connection protrusion 5 having a cylindrical structure, a cap screwing 6 slidably disposed on the connection protrusion 5, a baffle ring 7 integrally disposed on the connection protrusion 5, a left end of the cap screwing 6 slidably contacting the baffle ring 7, and a contact area between the two and an inner wall of the cap screwing 6 being coated with viscous lubricant, ensure its good lubricity, the right-hand member central point of throttle shaft 2 puts an organic whole and is provided with inserts protruding, inserts protruding for square arch, inserts protruding slip and runs through the square hole that is equipped with in spiral cover 6 center and inserts protruding slip and wear out the right-hand member spiro union of spiral cover 6 and have screw 9, locking screw 9, the head of screw 9 is followed on spiral cover 6, is equipped with step hole and throttle shaft 2 slip in connecting protruding 5 and runs through the step hole, the interference in the step hole inserts sealed bearing 8 and the inner circle that sealed bearing 8 was run through to throttle shaft 2 interference, sealed bearing 8's setting can realize stably accepting the rotation of throttle shaft 2 to have good sealing performance to the step hole.

Referring to fig. 3, a mounting frame 101 is integrally provided on the left side of a throttle housing 1, a stepping motor 10 is screwed in the mounting frame 101, the stepping motor 10 is controlled by a throttle driving circuit module to rotate, a slot 11 is integrally provided on the left side of the throttle housing 1, the slot 11 is a circular groove, a compression ring 16 is slidably provided in the slot 11, the compression ring 16 is in a circular ring structure, the compression ring 16 is slidably sleeved on a rotor shaft of the stepping motor 10, an elastic supporting structure for elastically supporting the compression ring 16 is also provided in the slot 11, the elastic supporting structure comprises a connecting pipe 12 which is annularly and uniformly integrally provided in the slot 11, springs 13 are inserted in the connecting pipe 12, a sleeve cover 14 is sleeved on the connecting pipe 12 and the spring 13, a pressing post 15 is integrally provided on the center of the sleeve cover 14 and is pressed on the compression ring 16, the spring 13 is in compression rebound, a space on the right side of the slot 11 is filled with a packing ring 17, the packing ring 17 is formed by filling nano-scale spherical graphite powder into the right side in the slot 11, has good sealing property and region lubricity, under the elastic supporting effect of the spring 13 uniformly arranged in the circumferential direction, the compression ring 16 compresses the packing ring 17 at the right side, forces the packing ring 17 to be pressed and covered on a cavity at the right side of the slot 11, the left end of the throttle shaft 2 and the rotor shaft of the stepping motor 10, under the infiltration of the nano-scale spherical graphite powder, not only realizes the matching gap between the sealing compression ring 16 and the stepping motor 10 and the matching gap between the throttle shaft 2 and the inner wall of the slot 11, but also ensures the sealing property by effectively supplementing the nano-scale spherical graphite powder through the elastic support of the spring 13 at the same time of self consumption of the nano-scale spherical graphite powder, and is provided with a double-in slot 18 at one end of the throttle shaft 2 inserted into the slot 11, and the double-in slot 18 is a circular groove with a triangular section, the arrangement of the double-in groove 18 ensures that the nano-scale spherical graphite powder in the packing ring 17 can more effectively enter the matching gap between the groove 11 and the throttle shaft 2, thereby enhancing the sealing effect.

The working principle of this embodiment is as follows: the sealing bearing 8 is arranged, so that the rotation of the throttle shaft 2 can be stably supported, the step hole has good sealing performance, under the elastic supporting effect of the spring 13 which is uniformly arranged in the circumferential direction, the compression ring 16 compresses the packing ring 17 on the right side, the packing ring 17 is forced to be pressed and covered on a cavity on the right side of the slot 11, the left end of the throttle shaft 2 and the rotor shaft of the stepping motor 10, under the penetration of nano-scale spherical graphite powder, the gap between the sealing compression ring 16 and the stepping motor 10 and the gap between the throttle shaft 2 and the inner wall of the slot 11 are realized, and the nano-scale spherical graphite powder can be effectively supplemented by the elastic support of the spring 13 while the self consumption of the nano-scale spherical graphite powder is ensured, so that the sealing performance can be ensured, and the fast flowing air part in the throttle shell can be prevented from being penetrated into the matching area between the rotor shaft of the stepping motor 10 and the throttle shaft 2.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims (4)

1. A throttle valve opening and closing structure is characterized in that: including throttle casing (1), rotation setting up throttle shaft (2) in throttle casing (1), set up in throttle plate (3) of throttle shaft (2) both sides and set up strengthening rib (4) on throttle casing (1) and throttle shaft (2), one side of throttle casing (1) is provided with connects protruding (5), throttle shaft (2) rotate and set up in connecting protruding (5), the opposite side of throttle casing (1) is provided with mounting bracket (101), be provided with step motor (10) and step motor (10) in mounting bracket (101) by its corner of throttle drive circuit module control, one side is equipped with fluting (11) in throttle casing (1), the slip is provided with clamping ring (16) and clamping ring (16) cover is established on the rotor shaft of step motor (10), still be provided with in fluting (11) elastic support structure of elastic support clamping ring (16), just be located fluting (11) the opposite side of fluting (11) and fill out packing ring (17).

2. A throttle opening and closing structure according to claim 1, characterized in that: the connecting convex (5) is sleeved with a spiral cover (6), the connecting convex (5) is provided with a baffle ring (7), a convex inserting part is arranged at the center of one end of the throttle shaft (2), a screw (9) is screwed at one end of the connecting convex penetrating through the spiral cover (6) and the convex inserting part penetrating out of the spiral cover (6), a step hole is formed in the connecting convex (5) and the throttle shaft (2) penetrates through the step hole, and a sealing bearing (8) and an inner ring of the throttle shaft (2) penetrates through the sealing bearing (8) are arranged in the step hole.

3. A throttle opening and closing structure according to claim 1, characterized in that: the elastic support structure comprises connecting pipes (12) which are uniformly arranged in the grooves (11) in the circumferential direction, springs (13) are arranged in the connecting pipes (12), sleeve covers (14) are sleeved on the connecting pipes (12) and the springs (13), and pressing columns (15) are arranged on the sleeve covers (14) and are pressed on the pressing rings (16).

4. A throttle opening and closing structure according to claim 1, characterized in that: one end of the throttle shaft (2) inserted into the slot (11) is provided with a concurrent slot (18), and the concurrent slot (18) is a circular groove with a triangular section.

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