Novel circular nut circulating ball structure

Abstract

The invention discloses a novel round nut recirculating ball structure which is characterized by comprising a recirculating ball nut and a nut body. The whole circulating ball nut is a cylinder; an external thread is arranged on the part of the outer wall of the circulating ball nut; a pressing plate groove is formed in the portion, deviating from the external thread, of the circulating ball nut, and the pressing plate groove is communicated with the external thread through at least one oil discharging groove. Through the application of the round nut circulating ball structure, the contact surface of the circulating ball nut mechanism becomes a whole circle, so that the circulating ball nut mechanism is tightly attached to a shell cavity, the whole circulating ball nut assembly is supported in the large-output-torque working state, meanwhile, the oil discharging groove is additionally formed between the groove and the outer thread section, and the oil discharging groove is tightly attached to the shell cavity and supports the whole circulating ball nut assembly in the large-output-torque working state. Oil and grinding chips can be better discharged, a good circulating ball working environment is guaranteed, the problem that the circulating ball deforms in a working state is solved, and meanwhile the good working environment of the circulating ball in a product is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of a recirculating ball electric steering device and the like, and in particular to a novel round nut recirculating ball structure. Background Art

[0002] There are two common recirculating ball structures at present. Figure 1 As shown, the side surfaces of the first type of recirculating ball are all flat. This arrangement makes the recirculating ball in the cavity of the recirculating ball electric steering device suspended in the air. When the device is working, the recirculating ball will be deformed. When the recirculating ball electric steering device is working, the recirculating ball is very easy to be deformed. This is because the recirculating ball nut has no support inside the product. Figure 2 As shown, the upper and lower ends of the second structural nut become a full circle, and the state of the conduit and the pressure plate surface supported by the two end surfaces is consistent with the original square nut. The insufficient supporting area is very easy to wear, and it loses its supporting function after rapid wear. Summary of the invention

[0003] In view of this, in order to solve the above problems, the object of the present invention is to provide a new round nut circulating ball structure, which includes:

[0004] Recirculating ball nut;

[0005] The circulating ball nut is cylindrical as a whole;

[0006] A portion of the outer wall of the recirculating ball nut is provided with an external thread;

[0007] A pressure plate groove is provided on the portion of the circulating ball nut facing away from the external thread, and the pressure plate groove is connected to the external thread through at least one oil unloading groove.

[0008] The above-mentioned novel round nut circulating ball structure has a through hole at the center of the circulating ball nut, and an internal thread is provided on the inner wall of the through hole.

[0009] The above-mentioned novel round nut circulating ball structure further includes: a screw rod, which is installed in cooperation with the internal thread.

[0010] In the above-mentioned novel round nut circulating ball structure, the pressure plate groove is a rectangular groove.

[0011] In the above-mentioned novel round nut circulating ball structure, two opposite inner walls of the pressure plate groove are both protruding outwards and provided with two arc-shaped guide tube grooves.

[0012] In the above-mentioned novel round nut circulating ball structure, the pressure plate groove is obliquely arranged on the outer wall of the circulating ball nut.

[0013] In the above-mentioned novel round nut circulating ball structure, the two opposite conduit grooves form a group of conduit grooves, and each group of conduit grooves is obliquely arranged on the outer wall of the circulating ball nut.

[0014] The novel round nut circulating ball structure mentioned above further comprises: two conduits, and the two ends of each conduit are respectively arranged in each group of conduit grooves.

[0015] In the above-mentioned novel round nut circulating ball structure, there are two oil unloading grooves, and both ends of each oil unloading groove are connected to a conduit groove and the external thread.

[0016] The above-mentioned novel round nut circulating ball structure, wherein the pressure plate groove is installed on the external pressure plate.

[0017] Compared with the prior art, the above technical solution has the following positive effects:

[0018] Through the application of the present invention, a new type of round nut circulating ball structure is provided, the contact surface of the circulating ball nut mechanism becomes a full circle, so as to fit tightly with the shell cavity, and a pressure plate groove is provided on the outer wall of the circulating ball nut, and the catheter can be set in the pressure plate groove, so that the circulating ball nut can protect the catheter and the pressure plate when it fits tightly with the shell, which not only solves the problem of deformation of the circulating ball in the working state, but also ensures a good working environment for the circulating ball inside the product. The entire circulating ball nut assembly is supported under the working state of large output torque, and an oil unloading groove is added between the pressure plate groove and the two sections of the external thread at the same time, which can better unload oil and grinding chips and ensure a good working environment for the circulating ball, which not only solves the problem of deformation of the circulating ball in the working state, but also ensures a good working environment for the circulating ball inside the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the first prior art circulating ball nut.

[0020] Figure 2 It is a schematic diagram of a second prior art circulating ball nut.

[0021] Figure 3 It is a top view of a novel round nut circulating ball structure in the present invention.

[0022] Figure 4 It is a side view of a novel round nut circulating ball structure in the present invention.

[0023] Figure 5 It is a bottom view of a novel round nut circulating ball structure in the present invention.

[0024] 1. Circulating ball nut; 2. Pressure plate groove; 3. Oil discharge groove; 4. External thread; 5. Screw rod; 6. Conduit groove; 7. Conduit. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0026] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0027] like Figures 1 to 5 As shown, a novel round nut circulating ball structure of a preferred embodiment is shown, which includes: a circulating ball nut 1.

[0028] The circulating ball nut 1 is cylindrical as a whole; an outer wall of the circulating ball nut 1 is provided with an external thread 4; a pressure plate groove 2 is provided on the part of the circulating ball nut 1 away from the external thread 4, and the pressure plate groove 2 is connected to the external thread 4 through at least one oil unloading groove 3.

[0029] During actual use, the contact surface of the circulating ball nut 1 is made into a full circle of φ95, so that the outer wall of the circulating ball nut 1 can fit tightly with the shell cavity, and a pressure plate groove 2 is provided on the outer wall of the circulating ball nut 1, and the conduit 7 can be arranged in the pressure plate groove 2, so that the circulating ball nut 1 can fit tightly with the shell while protecting the conduit 7 and the pressure plate, and support the entire circulating ball nut 1 assembly under a large output torque working state, and at the same time, an oil unloading groove 3 is added between the pressure plate groove 2 and the external thread 4, which can better unload oil and grinding chips and ensure a good working environment for the circulating ball, which not only solves the problem of deformation of the circulating ball under working conditions, but also ensures a good working environment for the circulating ball inside the product.

[0030] The present invention also has the following implementation modes based on the above:

[0031] Further, a new type of round nut recirculating ball structure is provided, wherein a through hole is provided at the center of the recirculating ball nut 1, and an inner wall of the through hole is provided with an internal thread. Specifically, the recirculating ball nut 1 and the screw rod 5 are used in combination.

[0032] Furthermore, a novel round nut circulating ball structure further includes: a screw rod 5, which is installed in cooperation with the internal thread.

[0033] Furthermore, a novel round nut circulating ball structure is provided, wherein the pressure plate groove 2 is a rectangular groove.

[0034] Furthermore, a novel round nut circulating ball structure is provided, wherein two opposite inner walls of the pressure plate groove 2 are both protruding outwards and provided with two arc-shaped guide tube grooves 6 .

[0035] Furthermore, a novel round nut circulating ball structure is provided, wherein the pressure plate groove 2 is obliquely arranged on the outer wall of the circulating ball nut 1 .

[0036] Furthermore, a novel round nut circulating ball structure is provided, wherein two opposite conduit grooves 6 form a group of conduit grooves 6 , and each group of conduit grooves 6 is obliquely arranged on the outer wall of the circulating ball nut 1 .

[0037] Furthermore, a novel round nut circulating ball structure further includes: two conduits 7, and the two ends of each conduit 7 are respectively arranged in each group of conduit grooves 6. Specifically, the small ball between the circulating ball nut 1 and the screw rod 5 is arranged inside the conduit 7, the conduit 7 is arranged obliquely, and the conduit 7 is arranged in the pressure plate groove 2, while protecting the conduit 7, it does not affect the small ball entering the screw rod 5.

[0038] Further, a novel round nut circulating ball structure is provided, wherein the number of the oil unloading grooves 3 is two, and both ends of each oil unloading groove 3 are connected with a conduit groove 6 and an external thread 4. Specifically, adding the oil unloading groove 3 between the two sections of the pressure plate groove 2 and the external thread 4 can better unload oil and grinding chips.

[0039] Further, a novel round nut circulating ball structure is provided, wherein the pressure plate groove 2 is installed on the external pressure plate.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of round nut circulating ball structure, characterized in that: include: Recirculating ball nut; The circulating ball nut is cylindrical as a whole; A portion of the outer wall of the recirculating ball nut is provided with an external thread; A pressure plate groove is provided on the portion of the circulating ball nut facing away from the external thread, and the pressure plate groove is connected to the external thread through at least one oil unloading groove.

2. A novel round nut circulating ball structure according to claim 1, characterized in that: A through hole is provided at the center of the circulating ball nut, and an inner wall of the through hole is provided with an internal thread.

3. A novel round nut circulating ball structure according to claim 2, characterized in that: Also includes: A screw rod is installed in cooperation with the internal thread.

4. A novel round nut circulating ball structure according to claim 1, characterized in that: The pressing plate groove is a rectangular groove.

5. A novel round nut circulating ball structure according to claim 1, characterized in that: Two opposite inner walls of the pressure plate groove are both protruded outwards and provided with two arc-shaped guide tube grooves.

6. A novel round nut circulating ball structure according to claim 1, characterized in that: The pressure plate groove is obliquely arranged on the outer wall of the circulating ball nut.

7. A novel round nut circulating ball structure according to claim 5, characterized in that: The two opposite conduit grooves form a group of conduit grooves, and each group of conduit grooves is obliquely arranged on the outer wall of the circulating ball nut.

8. A novel round nut circulating ball structure according to claim 7, characterized in that: Also includes: Two conduits, both ends of each conduit are respectively arranged in each group of conduit grooves.

9. A novel round nut circulating ball structure according to claim 7, characterized in that: There are two oil unloading grooves, and both ends of each oil unloading groove are connected with a conduit groove and the external thread.

10. A novel round nut circulating ball structure according to claim 7, characterized in that: The pressure plate groove is installed on the external pressure plate.

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