Worm gear with novel structure

Abstract

The invention discloses a worm gear with a novel structure, which comprises a worm gear and a worm gear iron core, the worm gear is arranged in an annular hollow mode, and a plurality of first worm teeth are arranged on the outer wall of the worm gear in the annular direction. The worm gear iron core is annular, and a plurality of second worm teeth are annularly arranged on the outer wall of the worm gear iron core; the worm gear wraps the worm gear iron core, and the second worm teeth and the first worm teeth are attached in a one-to-one correspondence mode. Through the application of the worm gear, the worm gear of a novel structure is provided, the tooth shape of the worm gear teeth of the worm gear iron core is the same as that of the worm gear, the tooth root portions of the worm gear teeth can be provided with metal supports, and the strength of the worm gear can be enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of worm gears and the like, and in particular to a worm gear with a new structure. Background Art

[0002] Because the output force of the X-EPS assembly is the final output torque satisfied by the motor controller after the two-stage speed change of the worm gear and the recirculating ball mechanism; when the output torque requirement increases while taking into account the steering sensitivity and followability, the speed ratio of the worm gear and the recirculating ball mechanism must not be too large, so increasing the output torque of the motor controller is the most direct method; however, increasing the output torque of the motor controller will test the bearing capacity of the worm wheel, and we need to enhance the bearing capacity of the worm wheel to cope with the high-torque motor controller.

[0003] However, the current worm gear structure is a circular iron core with PA66 material wrapped around the outer periphery of the iron core to make worm teeth. Since the worm teeth of this structure are all made of PA66, it is easy to break and fail from the root of the worm teeth when the bearing force increases. Summary of the invention

[0004] In view of this, in order to solve the above problems, the object of the present invention is to provide a new type of worm gear, which includes:

[0005] Worm gear, worm gear core;

[0006] The worm wheel is hollow in an annular shape, and the outer wall of the worm wheel is provided with a plurality of first worm teeth in an annular direction;

[0007] The worm gear core is annular, and a plurality of second worm teeth are circumferentially arranged on the outer wall of the worm gear core;

[0008] The worm wheel covers the worm wheel core, and the second worm teeth are fitted in a one-to-one correspondence with the first worm teeth.

[0009] In the above-mentioned novel structure worm wheel, the middle part of each of the second worm teeth is recessed inward to form a groove.

[0010] In the above-mentioned novel structure worm gear, a first clamping block is provided inwardly protruding from the middle part of the inner part of each of the first worm teeth, and each of the first clamping blocks is correspondingly clamped in each of the grooves.

[0011] In the above-mentioned novel structure worm wheel, an annular groove is provided on the outer edges of both end surfaces of the worm wheel core.

[0012] In the above-mentioned novel structure worm wheel, a second clamping block is annularly arranged inside both end surfaces of the worm wheel, and each of the second clamping blocks is correspondingly clamped in one of the annular grooves.

[0013] In the above-mentioned novel structure worm wheel, the outer wall of the worm wheel core is provided with a plastic layer.

[0014] In the above-mentioned novel structure worm wheel, a first protrusion is provided in an annular shape in the middle of the worm wheel core.

[0015] In the above-mentioned novel structure worm wheel, a second protrusion is provided in an annular shape at the middle part of the worm wheel, and the first protrusion is clamped inside the second protrusion.

[0016] Compared with the prior art, the above technical solution has the following positive effects:

[0017] By applying the present invention, a new type of worm gear structure is provided, the tooth shape of the worm teeth of the worm gear core is the same as the tooth shape of the worm wheel, the tooth root of the worm gear worm teeth can have metal support, and the strength of the worm wheel can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a novel structure worm gear of the present invention.

[0019] Figure 2 It is a schematic diagram of the worm gear core in the present invention.

[0020] Figure 3 It is a cross-sectional view of a novel structure worm gear of the present invention.

[0021] 1. Worm gear; 2. Worm gear core; 3. Second worm tooth; 4. Groove; 5. Ring groove; 6. First protrusion; 7. Second protrusion; 8. First worm tooth; 9. First clamping block; 10. Second clamping block. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] like Figures 1 to 3 As shown, a new type of worm gear structure of a preferred embodiment is shown, which includes: a worm gear 1 and a worm gear core 2.

[0025] The worm wheel 1 is hollow and annular, and the outer wall of the worm wheel 1 has a plurality of first worm teeth 8 in an annular direction; the worm wheel core 2 is annular, and the outer wall of the worm wheel core 2 has a plurality of second worm teeth 3 in an annular direction; the worm wheel 1 covers the worm wheel core 2, and the second worm teeth 3 and the first worm teeth 8 are fitted one by one.

[0026] In actual use, the tooth shape of the second worm teeth 3 of the worm gear core 2 is the same as the tooth shape of the first worm teeth 8 of the worm wheel 1 , so that the tooth root of the worm wheel 1 has metal support, which can enhance the strength of the worm wheel 1 .

[0027] The present invention also has the following implementation modes based on the above:

[0028] Furthermore, a new type of worm gear is provided, wherein the middle portion of the second worm tooth 3 is recessed inward to form a groove 4.

[0029] Further, a new type of worm gear structure is provided, wherein a first clamping block 9 is protruded inwardly from the middle of the inner part of each first worm tooth 8, and each first clamping block 9 is correspondingly clamped in each groove 4. Specifically, the groove 4 has a width of 4 mm and a depth of 2.5 mm, which can ensure the fitting strength of the worm wheel 1 and the worm wheel core 2.

[0030] Furthermore, a new type of worm gear is provided, wherein the outer edges of both end surfaces of the worm gear core 2 are provided with an annular groove 5 .

[0031] Further, a new type of structural worm wheel, wherein a second clamping block is provided in an annular direction inside both end surfaces of the worm wheel 1, and each second clamping block is correspondingly clamped in an annular groove 5. Specifically, the width of the annular groove 5 is 2 mm and the depth is 1.5 mm, and the cooperation between the second clamping block and the annular groove 5 can enhance the strength of the worm wheel 1.

[0032] Further, a new type of worm gear structure, wherein a plastic layer is provided on the outer wall of the worm gear core 2. Specifically, the outer wall of the worm gear core 2 is coated with a 1mm thick PA66 plastic layer, which can increase the bearing capacity of the worm gear 1 and facilitate the arrangement and assembly of the later products.

[0033] Furthermore, a new type of worm gear is provided, wherein a first protrusion 6 is provided in an annular shape in the middle of the worm gear core 2 .

[0034] Further, a new type of worm wheel structure is provided, wherein the middle part of the worm wheel 1 is provided with a second protrusion 7 in an annular shape, and the first protrusion 6 is clamped inside the second protrusion 7. Specifically, the first protrusion 6 and the second protrusion 7 are installed in cooperation to enhance the strength of the worm wheel 1.

[0035] 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 worm gear, characterized in that: include: Worm gear, worm gear core; The worm wheel is hollow in an annular shape, and the outer wall of the worm wheel is provided with a plurality of first worm teeth in an annular direction; The worm gear core is annular, and a plurality of second worm teeth are circumferentially arranged on the outer wall of the worm gear core; The worm wheel covers the worm wheel core, and the second worm teeth are fitted in a one-to-one correspondence with the first worm teeth.

2. A novel structure worm gear according to claim 1, characterized in that: The middle portion of each of the second worm teeth is recessed inward to form a groove.

3. A novel structure worm gear according to claim 2, characterized in that: A first clamping block is protruding inwardly from the middle of the interior of each of the first worm teeth, and each of the first clamping blocks is correspondingly clamped in each of the grooves.

4. A novel structure worm gear according to claim 2, characterized in that: The outer edges of both end surfaces of the worm gear core are each provided with an annular groove.

5. A novel structure worm gear according to claim 1, characterized in that: A second clamping block is annularly disposed inside both end surfaces of the worm wheel, and each of the second clamping blocks is correspondingly clamped in one of the annular grooves.

6. A novel structure worm gear according to claim 1, characterized in that: The outer wall of the worm gear core is provided with a plastic layer.

7. A novel structure worm gear according to claim 1, characterized in that: A first protrusion is provided in an annular shape in the middle of the worm gear core.

8. A novel structure worm gear according to claim 1, characterized in that: A second protrusion is annularly provided in the middle of the worm wheel, and the first protrusion is clamped inside the second protrusion.

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