Constant pressure applying equipment suitable for worm of electric power steering machine

Abstract

The utility model relates to constant pressure applying equipment suitable for a worm of an electric power steering machine, which comprises a bearing support, a force applying driving device mounted at one end of the bearing support, a guide device mounted on the bearing support, a thrust transmitting device movably arranged on the guide device, a force applying driving device connected with the rear end of the thrust transmitting device, and a force applying driving device connected with the force applying driving device. The front end of the thrust transmission device is connected with a pressure head device through a quantitative compression device, and a pressure touch sensor is installed on the pressure head device. Therefore, an independent force application driving device is arranged, and continuous and adjustable pressure output can be provided. And stable pressure transmission can be realized through the guide device and the thrust transmission device. And the independent quantitative compression device is arranged, so that the pressure head device is supported by constant pressure as far as possible. And the pressure touch sensor is mounted, so that allocation of constant pressure output can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pressure equipment, especially a kind of constant pressure equipment suitable for electric power steering machine worm. BACKGROUND

[0002] Corresponding to existing steering system especially electric power steering system, it needs to utilize mechanical force cooperation to meet the sustained and stable of force output. During implementation, it is mainly utilized to cooperate turbine disc and worm, and it needs to be constantly run-in during use. To ensure to give better complex pressure during run-in, it needs to configure huge servo hydraulic system, and the implementation cost is high. Meanwhile, existing servo hydraulic system cannot keep constant pressure, and fluctuation appears, which influences the stable operation of steering system.

[0003] In view of the above-mentioned defects, the present design person actively researches and innovates, so as to create a kind of constant pressure equipment suitable for electric power steering machine worm, so that it has more industrial utilization value. INVENTION CONTENTS

[0004] To solve the above technical problems, the purpose of the utility model is to provide a kind of constant pressure equipment suitable for electric power steering machine worm.

[0005] The constant pressure equipment suitable for electric power steering machine worm of the utility model, including bearing support, wherein: one end of the bearing support is provided with force driving device, guiding device is installed on the bearing support, push force transmission device is movably arranged on the guiding device, the rear end of the push force transmission device is connected with the force driving device, the front end of the push force transmission device is connected with pressure head device through quantitative compression device, pressure touch sensor is installed on the pressure head device.

[0006] Further, the constant pressure equipment suitable for electric power steering machine worm, wherein, the bearing support is L-shaped support, the L-shaped support is provided with guide connection hole, the force driving device is air cylinder, the driving end of the air cylinder is connected into guide connection hole and connected with push force transmission device.

[0007] Further, the constant pressure equipment suitable for electric power steering machine worm, wherein, a plurality of positioning holes are arranged on the bearing support, positioning screw is installed in the positioning hole.

[0008] Further, the constant pressure equipment suitable for electric power steering machine worm, wherein, the guiding device includes wire rail connected with bearing support, sliding block is movably installed on the wire rail, push force transmission device is installed on the sliding block.

[0009] Further, the constant pressure device for worm of electric power steering machine, wherein the thrust transmission device comprises a guide block connected with the guide device, a push rod movably arranged in the guide block, a guide buckle mounted at the rear end of the push rod, the guide buckle connected with the force driving device, and the front end of the push rod connected with the constant compression device.

[0010] Further, the constant pressure device for worm of electric power steering machine, wherein the constant compression device comprises a mounting block connected with the thrust transmission device, an adjusting space formed in the mounting block, and a butterfly spring mounted in the adjusting space, and the pressure head device connected with the butterfly spring.

[0011] Further, the constant pressure device for worm of electric power steering machine, wherein the pressure head device comprises a clamp connected with the guide device, a placing base mounted on the clamp, a pressure touch sensor mounted in the placing base, and a pressure head body connected in front of the pressure touch sensor.

[0012] By the above scheme, the utility model has at least the following advantages:

[0013] 1. The independent force driving device can provide continuous and adjustable pressure output.

[0014] 2. The guide device and the thrust transmission device can realize stable pressure transmission.

[0015] 3. The independent constant compression device can provide the pressure head device with constant pressure support.

[0016] 4. The pressure touch sensor can meet the constant pressure output adjustment.

[0017] 5. The whole structure is simple, and the utility model is easy to manufacture and use, and can be directly connected to the existing double pinion type electric power steering system.

[0018] The above description is only a summary of the technical scheme of the utility model, in order to make the technical means of the utility model more clear, and the content of the specification can be implemented, the following will be described in detail with the preferred embodiments of the utility model and the accompanying drawings. DETAILED DESCRIPTION

[0019] Fig. 1 It is the whole structure schematic view of the constant pressure device for worm of electric power steering machine.

[0020] Fig. 2 It is the connection schematic view of the constant pressure device for worm of electric power steering machine.

[0021] The meanings of the reference signs in the drawings are as follows.

[0022] 1 bearing bracket 2 force driving device

[0023] 3 guide device 4 thrust transmission device

[0024] 5 quantitative compression device 6 pressure head device

[0025] 7 pressure touch sensor 8 positioning hole

[0026] 9 wire rail 10 sliding block

[0027] 11 guide block 12 push rod

[0028] 13 guide buckle 14 mounting block

[0029] 15 butterfly spring 16 calliper

[0030] 17 placing base 18 pressure head body DETAILED DESCRIPTION

[0031] The specific embodiments of the utility model are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0032] As Figs. 1-2 The constant pressure equipment suitable for electric power steering machine worm includes a bearing bracket 1, which is characterized in that: one end of the bearing bracket 1 is provided with a force driving device 2, so as to provide effective electric power pressure according to the needs. Meanwhile, in order to facilitate pressure conduction, the utility model is provided with a guide device 3 on the bearing bracket 1, the guide device 3 is movably provided with a thrust transmission device 4, and the rear end of the thrust transmission device 4 is connected with the force driving device 2. Moreover, the front end of the thrust transmission device 4 is connected with a pressure head device 6 through a quantitative compression device 5. In this way, the pressure transmission can be realized by the butt joint of the pressure head device 6 and the electric power steering machine. Furthermore, the pressure head device 6 can be provided with a pressure touch sensor 7. The working condition of the force driving device 2 can be adjusted through the background system, so as to realize constant pressure.

[0033] In combination with a preferred embodiment of the utility model, the bearing bracket 1 is an L-shaped bracket, the L-shaped bracket is provided with a guide hole, the force driving device 2 is a cylinder, and the driving end of the cylinder is connected with the thrust transmission device 4 after being connected into the guide hole. Meanwhile, considering the need of subsequent installation and positioning, the bearing bracket 1 is provided with a plurality of positioning holes 8, and the positioning holes 8 are provided with positioning screws.

[0034] Further, the guiding device 3 comprises a wire rail 9 connected with the bearing support 1, a sliding block 10 movably mounted on the wire rail 9, and the thrust transmission device 4 mounted on the sliding block 10. Meanwhile, in order to facilitate the adjustment of force transmission, the sliding block 10 has a better activity stroke and damping, and the damping adjusting screw is mounted on the sliding block 10. In this way, the contact tightness of the sliding block 10 and the wire rail 9 can be realized by the damping adjusting screw.

[0035] In combination with the actual implementation, the thrust transmission device 4 comprises a guide block 11 connected with the guiding device 3, a push rod 12 movably arranged in the guide block 11, a guide buckle 13 mounted on the rear end of the push rod 12, and the drive end head of the force driving device 2 connected with the guide buckle 13. Meanwhile, the front end of the push rod 12 is connected with the quantitative compression device 5. In this way, the pressure from the force driving device 2 can be stably transmitted to the quantitative compression device 5.

[0036] Further, in order to realize appropriate flexible buffering and maintain nearly constant force transmission, the quantitative compression device 5 comprises a mounting block 14 connected with the thrust transmission device 4, an adjusting space is arranged in the mounting block 14, and the butterfly spring 15 is mounted in the adjusting space. Meanwhile, the pressure head device 6 is connected with the butterfly spring 15. In this way, the force is transmitted through the butterfly spring 15, and the excessive force can be absorbed by the elastic deformation, and the normal stress can be directly transmitted.

[0037] During the implementation, the pressure head device 6 comprises a clamp 16 connected with the wire rail 9 of the guiding device 3, and the placing base 17 is mounted on the clamp 16. Meanwhile, the pressure touch sensor 7 is mounted in the placing base 17, and the pressure head body 18 is connected in front of the pressure touch sensor 7. In this way, during the use, the clamp 16 can be selected as the pneumatic clamping clamp 16, which can be matched with the wire rail 9 and can only move forward under the guidance of the wire rail 9, and the clamp 16 can be clamped when the backward trend appears, so that the clamp 16 cannot be retracted during use. Moreover, the support pressure transmitted by the electric power steering machine can be effectively sensed by the pressure head body 18, and the working condition of the force driving device 2 can be adjusted within a suitable range.

[0038] The working principle of the utility model is as follows:

[0039] The cylinder drives the push rod 12 to move forward, so that the pressure head device 6 always abuts against the corresponding butt joint end head of the electric power steering machine. With the force of the cylinder, the stable pressure for a long time can be met under the cooperation of the quantitative compression device 5. The directional movement of the pressure head device 6 can be realized by the clamp 16, and the continuity of the force can be ensured. Therefore, the pre-pressure requirement of the turbine disc and the worm inside the steering machine during the running-in can be met, and the stable operation can be realized.

[0040] It can be seen from the above text expression and in combination with the drawings that the utility model has the following advantages after being adopted:

[0041] 1. The independent force driving device can provide continuous and adjustable pressure output.

[0042] 2. The guiding device and the thrust transmission device can realize stable pressure transmission.

[0043] 3. The independent quantitative compression device can provide the pressure head device with constant pressure support.

[0044] 4. The pressure touch sensor can satisfy the constant pressure output.

[0045] 5. The whole structure is simple, and the utility model is convenient to manufacture and use.

[0046] In addition, the indication direction or position relationship described in the utility model is based on the direction or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or structure must have a specific direction or be operated in a specific direction, so it cannot be understood as a limitation of the utility model.

[0047] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principle of the utility model, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A constant pressure application device for the worm gear of an electric power steering system, comprising a load-bearing bracket, characterized in that: One end of the support bracket is equipped with a force-applying drive device, the support bracket is equipped with a guide device, the guide device is movably mounted with a thrust transmission device, the rear end of the thrust transmission device is connected to the force-applying drive device, and the front end of the thrust transmission device is connected to a pressure head device through a quantitative compression device, and a pressure sensor is installed on the pressure head device.

2. The constant pressure device for electric power steering worm gear according to claim 1, characterized in that: The supporting bracket is an L-shaped bracket with a guide hole. The force-applying driving device is a cylinder, and the driving end of the cylinder is connected to the guide hole and then connected to the thrust transmission device.

3. The constant pressure device for electric power steering worm gear according to claim 1, characterized in that: The support bracket is provided with several positioning holes, and positioning screws are installed in the positioning holes.

4. The constant pressure device for the worm gear of an electric power steering system according to claim 1, characterized in that: The guiding device includes a linear rail connected to a support bracket, a slider movably mounted on the linear rail, and a thrust transmission device mounted on the slider.

5. The constant pressure device for electric power steering worm gear according to claim 1, characterized in that: The thrust transmission device includes a guide block connected to a guide device, a push rod movably passing through the guide block, a guide buckle installed at the rear end of the push rod, the guide buckle being connected to a force application drive device, and the front end of the push rod being connected to a quantitative compression device.

6. The constant pressure device for electric power steering worm gear according to claim 1, characterized in that: The quantitative compression device includes a mounting block connected to the thrust transmission device. An adjustment space is provided in the mounting block, and a butterfly spring is installed in the adjustment space. The pressure head device is connected to the butterfly spring.

7. The constant pressure device for electric power steering worm gear according to claim 1, characterized in that: The pressure head device includes a caliper connected to a guide device, a placement base mounted on the caliper, a pressure sensor installed inside the placement base, and a pressure head body connected in front of the pressure sensor.

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