CN220180908U - Corner limiting structure for wire control hand feeling unit - Google Patents

Abstract

The utility model discloses a corner limiting structure for a wire control hand feeling unit, which belongs to the field of automobile steering systems and comprises the following components: the shell is hollow, and the right side of the upper end is provided with a limit groove; the first bearing is arranged on the left side inside the shell, the second bearing is arranged on the right side inside the shell and is coaxial with the first bearing, the screw is arranged in the first bearing and the second bearing, the first limiting block is arranged on the left side of the screw, the second limiting block is arranged on the right side of the screw, the limiting device is positioned in the limiting groove and is in threaded connection with the screw, and the limiting device moves along the axial direction of the screw and is in butt joint with the first limiting block and the second limiting block under the rotation of the screw; the device realizes accurate spacing through stroke and stop device relative angle between first stopper, second stopper, satisfies the angle restriction of steering wheel demand, and screw rod circumference rotates spacing substitution axial spacing, stops moment fluctuation and the dead phenomenon of card that lead to because of the screw thread deformation that the extrusion leads to, prevents that other spare part from damaging and leading to the functional failure.

Description

Corner limiting structure for wire control hand feeling unit

Technical Field

The utility model relates to the field of automobile steering systems, in particular to a corner limiting structure for a wire control hand feeling unit.

Background

With the development of the automatic driving technology of the automobile, the wire control technology is mature, and various advantages such as the arrangement of the whole automobile, the safety function and the auxiliary function are achieved, so that the wire control steering is widely used on passenger automobiles and commercial vehicles. Because the steering by wire cancels the mechanical connection of the steering intermediate shaft, the steering shaft has no steering stroke mechanical limit of the steering device, and a mechanical limit device is added on the steering by wire hand feeling unit to avoid the damage and the functional failure of the spring clock and the angle sensor caused by the unlimited steering shaft rotation angle.

In order to solve the problem, the prior art scheme generally adopts a lead screw which is added at the tail end of a steering shaft, a limiting groove is added on a lead screw nut, and an angle limiting function is achieved through the cooperation of the limiting groove and a limiting pin. However, the prior art has the defects that the screw rod screw thread is extruded by external force to cause screw thread deformation, unstable rotation and even clamping because the limiting pin is positioned at the tail end of the steering shaft to limit the screw rod nut to slide; meanwhile, the limiting pins are in clearance fit with the limiting grooves of the screw rod, so that the strength is guaranteed, the limiting pins are made of metal materials, and when the screw rod is in reversing, reversing abnormal sound is easy to generate in the clearance.

Therefore, in order to prevent the occurrence of seizing and abnormal sound, the utility model provides a corner limiting structure for a wire control hand feeling unit, which has accurate limiting and can also solve the moment fluctuation and seizing phenomena caused by screw deformation.

Disclosure of Invention

In order to achieve the above object, the present utility model aims to provide a new technical solution: the structure is simple and practical, and the steering of the automobile is optimized.

The technical scheme of the utility model is as follows:

a corner limit structure for a drive-by-wire hand feel unit, comprising:

the device comprises a shell, a first bearing, a second bearing, a screw, a first limiting block, a second limiting block and a limiting device;

the shell is hollow, and a limit groove is formed in the right side of the upper end of the shell; the first bearing is arranged on the left side inside the shell, the second bearing is arranged on the right side inside the shell and is coaxial with the first bearing, the screw is arranged in the first bearing and the second bearing, the first limiting block is arranged on the left side of the screw, the second limiting block is arranged on the right side of the screw, the limiting device is located in the limiting groove and is in threaded connection with the screw, and the limiting device moves along the axial direction of the screw and is in butt joint with the first limiting block or the second limiting block under the rotation of the screw.

The beneficial effects of the utility model are as follows: the screw is connected with a steering shaft of the steering wheel and synchronously rotates when the steering wheel rotates; the rotation of the screw drives the limiting device to move in the limiting groove, and the rotation stopping of the screw is completed through the limiting device limited by the limiting groove and the first limiting block or the second limiting block; accurate spacing is realized through first stopper, second stopper travel and stop device relative angle, satisfies the angle restriction of steering wheel demand, and screw rod circumference rotates spacing substitution axial spacing, has stopped moment fluctuation and the dead phenomenon of card that the screw thread that leads to because of the extrusion warp, prevents that other spare parts from damaging and leading to the functional failure.

Based on the technical scheme, the utility model can also be improved as follows:

further, stop device includes trapezoidal nut, O type packing ring, fixing bolt and third stopper, trapezoidal nut installs on the screw rod, and follow the rotation of screw rod is removed, the third stopper is located the top of trapezoidal nut, and is located in the spacing groove, fixing bolt passes the third stopper and with trapezoidal nut is connected, O type packing ring is installed fixing bolt with between the third stopper.

Further, the O-shaped gasket is in interference connection with the third limiting block.

Further, the third limiting block is made of nylon.

The beneficial effects of adopting the further scheme are as follows: the trapezoidal nut and the third limiting block are driven to move in the limiting groove along the axial direction of the screw rod through the rotation of the screw rod; the O-shaped gasket and the (nylon) material of the third limiting block can reduce abnormal sound generated when the third limiting block is abutted against the limiting groove, the third limiting block and the limiting groove ensure that the trapezoidal nut moves along the axial direction of the screw rod, and when in the limiting position, each limiting block is contacted with the circumferential stress, so that the screw rod or the trapezoidal nut is prevented from deforming due to axial extrusion of the first limiting block and the second limiting block; the nylon material can not make sound when extruding, has also improved life simultaneously.

Further, limiting teeth which are in butt joint with the first limiting block and the second limiting block are arranged at the left end and the right end of the trapezoidal nut.

Further, the right side of first stopper is equipped with first spacing tooth, the left side of second stopper is equipped with the spacing tooth of second, stop device is in when moving both ends in the spacing groove, can respectively with first spacing tooth or the spacing tooth butt of second.

The beneficial effects of adopting the further scheme are as follows: the first limiting teeth and the second limiting teeth can be respectively clamped and matched with the limiting device, so that axial limiting is changed into circumferential limiting, and the limiting strength is improved; moment fluctuation and seizing phenomenon caused by screw deformation can be avoided.

Drawings

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

FIG. 2 is a cross-sectional view of the internal structure of the present utility model;

fig. 3 is an exploded view of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a housing; 11. a limit groove; 2. a first bearing; 3. a second bearing; 4. a screw; 5. a first limiting block; 51. the first limiting teeth; 6. a second limiting block; 61. the second limiting teeth; 7. a limiting device; 71. a trapezoidal nut; 711. limit teeth; 72. an O-ring; 73. a fixing bolt; 74. and a third limiting block.

Detailed Description

The present utility model will be further described in detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, and the present utility model is not limited to the scope of the present utility model.

Example 1: as shown in fig. 1-3, an embodiment of a corner limiting structure for a touch by wire unit according to the present disclosure includes:

the device comprises a shell 1, a first bearing 2, a second bearing 3, a screw 4, a first limiting block 5, a second limiting block 6 and a limiting device 7;

the inside of the shell 1 is hollow, and the right side of the upper end is provided with a limit groove 11; the first bearing 2 is arranged on the left side inside the shell 1, the second bearing 3 is arranged on the right side inside the shell 1 and is coaxial with the first bearing 2, the screw 4 is arranged in the first bearing 2 and the second bearing 3, the first limiting block 5 is arranged on the left side of the screw 4, the second limiting block 6 is arranged on the right side of the screw 4, the limiting device 7 is arranged in the limiting groove 11, the limiting device 7 is in threaded connection with the screw 4, and moves axially along the screw 4 and is in butt joint with the first limiting block 5 or the second limiting block 6 under the rotation of the screw 4.

Specifically, the screw rod 4 is connected with a steering shaft connected with a steering wheel, the screw rod 4 is driven to synchronously rotate through steering of the steering wheel, meanwhile, the limiting device 7 moves in the limiting groove 11, and after the steering wheel rotates for a certain angle, the limiting device 7 is abutted with the first limiting block 5 or the second limiting block 6 for limiting.

It should be understood that the rotational flexibility of the screw 4 is ensured by the first bearing 2 and the second bearing 3, the screw 4 is a stressed rotating rod, the steering wheel operability is ensured by the connection structure of the limiting device 7, the device can achieve more accurate limiting through a structure of multiple limiting and threaded rotation movement, the angle limitation of the steering wheel requirement is met, and meanwhile, the problem of clamping caused by thread deformation caused by extrusion in the existing structure can be solved.

Example 2, based on example 1: as shown in fig. 2 to 3, the limiting device 7 includes a trapezoidal nut 71, an O-shaped washer 72, a fixing bolt 73 and a third limiting block 74, the trapezoidal nut 71 is mounted on the screw 4 and moves with the rotation of the screw 4, the third limiting block 74 is located above the trapezoidal nut 71 and in the limiting groove 11, the fixing bolt 73 passes through the third limiting block 74 and is connected with the trapezoidal nut 71, and the O-shaped washer 72 is mounted between the fixing bolt 73 and the third limiting block 74.

Specifically, the trapezoidal nut 71 is in threaded connection with the screw 4, and moves along the axial direction along with the rotation of the screw 4, the third limiting block 74 is located in the limiting groove 11, and is fixed above the trapezoidal nut 71 by the fixing bolt 73, moves along with the movement of the trapezoidal nut 71, and the O-shaped washer 72 is used for damping and avoiding the impact abnormal sound.

It should be understood that the limiting groove 11 is used for limiting the trapezoidal nut 71 to axially follow during rotation of the screw 4, and only axially move, so that the limiting teeth of the trapezoidal nut 71 can circumferentially abut against the limiting teeth of the limiting block.

Example 3, based on example 2: as shown in fig. 2-3, the O-ring 72 is in an interference connection with a third stop 74.

It should be appreciated that the interference connection improves the connection degree between the third stopper 74 and the trapezoidal nut 71 and the fixing bolt 73, ensures no looseness between each part when abutting, and reduces fluctuation and gap abnormal sound.

Example 4, based on example 2: as shown in fig. 2-3, the third stopper 74 is made of nylon.

It is understood that the nylon material can realize the flexible contact when with spacing groove 11 butt, can not produce noise abnormal sound, and nylon material wear rate is little simultaneously, can improve life greatly.

Example 5, based on example 2: as shown in fig. 1, the right and left ends of the trapezoidal nut 71 are provided with stopper teeth 711 that abut against the first stopper 5 and the second stopper 6.

It should be understood that the limiting teeth 711 provided at the left and right ends of the trapezoidal nut 71 are used for realizing a positioning effect through a tooth structure when abutting against the first limiting block 5 and the second limiting block 6.

Example 6, based on example 1: as shown in fig. 2-3, the right side of the first limiting block 5 is provided with a first limiting tooth 51, the left side of the second limiting block 6 is provided with a second limiting tooth 61, and the limiting device 7 can be respectively abutted with the first limiting tooth 51 or the second limiting tooth 61 when moving to two ends in the limiting groove 11.

It should be understood that the limiting teeth 711 may be respectively engaged with the first limiting teeth 51 and the second limiting teeth 61, and stop rotation of the screw 4 is achieved, so as to improve strength of the limiting structure.

Preferably, the steering wheel rotation angle can be accurately regulated and controlled by the distance between the first limiting block 5 or the second limiting block 6 and the angle between the limiting teeth 711 and the first limiting teeth 51 and the second limiting teeth 61.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (6)

1. A corner limit structure for drive-by-wire unit of feeling, characterized by comprising:

the device comprises a shell (1), a first bearing (2), a second bearing (3), a screw (4), a first limiting block (5), a second limiting block (6) and a limiting device (7);

the shell (1) is hollow, and a limit groove (11) is formed in the right side of the upper end of the shell; the first bearing (2) is arranged on the left side inside the shell (1), the second bearing (3) is arranged on the right side inside the shell (1) and is coaxial with the first bearing (2), the screw rod (4) is arranged in the first bearing (2) and the second bearing (3), the first limiting block (5) is arranged on the left side of the screw rod (4), the second limiting block (6) is arranged on the right side of the screw rod (4), the limiting device (7) is arranged in the limiting groove (11), the limiting device (7) is in threaded connection with the screw rod (4), and the limiting device moves axially along the screw rod (4) and is in butt joint with the first limiting block (5) and the second limiting block (6) under the rotation of the screw rod (4).

2. The corner limiting structure for a hand-by-wire unit according to claim 1, wherein the limiting device (7) comprises a trapezoidal nut (71), an O-ring (72), a fixing bolt (73) and a third limiting block (74), the trapezoidal nut (71) is mounted on the screw (4) and moves with the rotation of the screw (4), the third limiting block (74) is located above the trapezoidal nut (71) and in the limiting groove (11), the fixing bolt (73) passes through the third limiting block (74) and is connected with the trapezoidal nut (71), and the O-ring (72) is mounted between the fixing bolt (73) and the third limiting block (74).

3. The corner limiting structure for a touch by wire unit according to claim 2, wherein the O-ring (72) is in interference connection with the third limiting block (74).

4. The corner limiting structure for the touch by wire unit according to claim 2, wherein the third limiting block (74) is made of nylon.

5. The corner limiting structure for the wire control hand feeling unit according to claim 2, wherein limiting teeth (711) which are abutted with the first limiting block (5) and the second limiting block (6) are arranged at the left end and the right end of the trapezoidal nut (71).

6. The corner limiting structure for the wire control hand feeling unit according to claim 1, wherein a first limiting tooth (51) is arranged on the right side of the first limiting block (5), a second limiting tooth (61) is arranged on the left side of the second limiting block (6), and the limiting device (7) is respectively abutted with the first limiting tooth (51) or the second limiting tooth (61) when moving to two ends in the limiting groove (11).