Mechanical transmission component

Abstract

The mechanical transmission component comprises a transmission shaft, a worm is arranged on the surface of one end of the transmission shaft, a worm gear is connected to the other end of the transmission shaft, worm gear teeth are evenly arranged on the outer circumferential surface of the worm gear at intervals, a tooth groove is formed between every two adjacent worm gear teeth and composed of a straight tooth groove and an arc-shaped tooth groove, and the straight tooth groove is tangent to the bottom of the arc-shaped tooth groove. The straight tooth grooves extend and penetrate through the end face, close to the worm, of the worm gear. The transmission component has the advantages that the integrity is higher, the structural strength of the transmission component is improved, and the service life of the transmission component is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of transmission components, and in particular to a mechanical transmission component. Background Art

[0002] Gearboxes are important components widely used in mechanical transmissions. They consist of two or more gears. Some gearboxes contain a worm gear and a worm. The worm gear structure is often used to transmit motion and power between two staggered axes. The worm gear and worm are equivalent to a gear and a rack in their middle plane, and the worm is similar in shape to a screw.

[0003] The gearbox includes a worm wheel, a worm and a transmission bearing. The worm wheel, the worm and the transmission bearing are all rotatably arranged in the gearbox. The worm wheel and the transmission bearing are coaxially fixed, and the worm wheel is meshed with the worm. However, in actual application, since the space for placing components in the gearbox is fixed and the installation order of the components is sequential, the worm that matches the worm wheel is usually fixed with other components and placed in the gearbox before the worm wheel. The worm wheel needs to be installed in the gearbox in an interlaced manner and meshed with the worm, but the space in the gearbox is limited, and the worm wheel is not easy to slide in the gearbox to mesh with the worm. Utility Model Content

[0004] In order to solve the problem in the prior art that the worm wheel in the existing gearbox transmission component is difficult to assemble and the worm wheel and worm are easily misaligned after assembly, resulting in transmission failure, the present application provides a mechanical transmission component.

[0005] A mechanical transmission component provided in the present application adopts the following technical solution: a mechanical transmission component, including a transmission shaft, a worm is provided on the surface of one end of the transmission shaft, and the other end is connected to a worm wheel, and worm wheel teeth are evenly spaced on the outer circumferential surface of the worm wheel, and a tooth groove is formed between two adjacent worm wheel teeth, and one end of the tooth groove extends through the end face of the worm wheel close to the worm.

[0006] By adopting the above technical solution, the worm is assembled inside the gear box. When assembling the transmission component, the teeth on the worm enter the tooth groove on the worm wheel from the opening at one end of the tooth groove, thereby realizing the matching of the worm wheel and the worm, and the assembly of the transmission component is simpler.

[0007] Optionally, retaining rings for limiting the worm gear are provided on both sides of the connection between the transmission shaft and the worm gear.

[0008] By adopting the above technical solution, the retaining ring limits the worm gear axially, thereby improving the strength of the connection between the worm gear and the transmission shaft.

[0009] Optionally, knurling is provided on the surface of the connection between the transmission shaft and the worm gear.

[0010] By adopting the above technical solution, the structural strength of the connection between the worm gear and the transmission shaft is improved by arranging the knurling.

[0011] Optionally, the knurling is a plurality of ridges evenly spaced and extending axially along the transmission shaft and protruding from the surface of the transmission shaft.

[0012] Optionally, the tooth grooves are composed of straight tooth grooves and arcuate tooth grooves, the straight tooth grooves are tangent to the bottom of the arcuate tooth grooves, and the straight tooth grooves extend through the end face of the worm wheel close to the worm.

[0013] By adopting the above technical solution, when the worm wheel and the worm are matched, the teeth on the worm enter the arc-shaped tooth groove through the straight tooth groove. The arc-shaped tooth groove is configured to have a larger contact surface with the teeth on the worm, thereby improving the transmission efficiency. At the same time, the arc-shaped tooth groove can limit the worm to prevent the worm from separating from the worm wheel.

[0014] Optionally, the worm gear teeth are configured as helical teeth.

[0015] Optionally, the worm gear is formed on the transmission shaft by plastic injection molding.

[0016] By adopting the above technical solution, the worm gear is arranged on the transmission shaft by plastic injection molding, and the overall structural strength is higher and the integrity is better.

[0017] Optionally, an assembly hole is provided at one end of the transmission shaft close to the worm gear.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The tooth groove on the worm wheel in this application is set to be open at one end. During assembly, the teeth on the worm enter the tooth groove through the tooth groove opening, thereby facilitating the assembly efficiency of the transmission component and improving the assembly of the transmission component;

[0020] 2. The tooth grooves on the worm wheel in this application are composed of straight tooth grooves and arc-shaped tooth grooves. The arc-shaped tooth grooves are designed to have a larger contact surface with the teeth on the worm, thereby improving transmission efficiency. At the same time, the arc-shaped tooth grooves can limit the worm and prevent it from separating from the worm wheel;

[0021] 3. A retaining ring and knurling are provided at the connection between the transmission shaft and the worm gear, and the worm gear is injection molded on the transmission shaft, which has a higher integrity, improves the structural strength of the transmission components, and extends the service life of the transmission components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a mechanical transmission component in an embodiment of the present application.

[0023] Figure 2It is a schematic diagram of the transmission shaft structure of a mechanical transmission component in an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram of a worm gear structure of a mechanical transmission component in an embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of a worm gear of a mechanical transmission component in an embodiment of the present application.

[0026] Explanation of the accompanying reference numerals: 1. transmission shaft; 2. worm; 3. worm wheel; 4. assembly hole; 5. retaining ring; 6. knurling; 7. worm wheel teeth; 8. straight tooth groove; 9. arcuate tooth groove. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0028] See also Figure 1-4 . It should be noted that 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 this application. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application. 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 this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] This embodiment discloses a mechanical transmission component.

[0031] Reference Figure 1 , including a transmission shaft 1, a worm wheel 3 is provided at one end of the transmission shaft 1, and a worm 2 is provided at the other end. An assembly hole 4 is opened on the end surface of the transmission shaft 1 near the worm 2.

[0032] Reference Figure 2 , retaining rings 5 ​​are symmetrically arranged on both sides of the connection between the transmission shaft 1 and the worm gear 3, and knurling 6 is provided on the surface of the transmission shaft 1 between the two retaining rings 5. The knurling 6 is a plurality of evenly spaced edges extending axially along the transmission shaft 1 and protruding from the surface of the transmission shaft 1. The worm gear 3 is injection molded between the two retaining rings 5 ​​on the transmission shaft 1.

[0033] Reference Figure 3 and Figure 4 The outer circumferential surface of the worm wheel 3 is evenly spaced with worm gear teeth 7. A tooth groove 10 is formed between two adjacent worm gear teeth 7. The tooth groove 10 consists of a straight tooth groove 8 and an arc-shaped tooth groove 9. The straight tooth groove 8 is tangent to the bottom of the arc-shaped tooth groove 9. The straight tooth groove 8 extends through the end face of the worm wheel 3 close to the worm 2. The worm wheel 3 is plastic injection molded and arranged on the transmission shaft 1.

[0034] The implementation principle of a mechanical transmission component in this embodiment is: when assembling the transmission component, when the worm wheel 3 cooperates with the worm inside the gear box, the teeth on the worm inside the gear box enter the arcuate tooth groove 9 through the straight tooth groove 8. The arcuate tooth groove 9 is arranged to have an arc shape so that the contact surface with the teeth on the worm inside the gear box is larger, thereby improving the transmission efficiency. At the same time, the arcuate tooth groove 9 can limit the worm inside the gear box to prevent the worm inside the gear box from separating from the worm wheel 3. During the transmission process, the retaining ring limits the worm wheel 3 axially. The worm wheel 3 is injection molded on the transmission shaft 1. During injection molding, the plastic enters the groove between the retaining ring 5 and the knurling 6, so that the worm wheel 3 is tightly connected to the transmission shaft 1, thereby improving the overall structural strength of the transmission component.

[0035] In summary, the tooth grooves on the worm wheel in the present application are set to be open at one end. During assembly, the teeth on the worm enter the tooth grooves through the tooth groove opening, thereby facilitating the assembly efficiency of the transmission component and improving the assembly of the transmission component; the tooth grooves on the worm wheel in the present application are composed of straight tooth grooves and arc-shaped tooth grooves. The arc-shaped tooth grooves are set to have an arc-shaped interior so that the contact surface with the teeth on the worm is larger, thereby improving the transmission efficiency. At the same time, the arc-shaped tooth grooves can limit the worm and prevent the worm from separating from the worm wheel; a retaining ring and knurling are set at the connection between the transmission shaft and the worm wheel, and the worm wheel is injection molded on the transmission shaft, which has a higher integrity, improves the structural strength of the transmission component, and extends the service life of the transmission component. Therefore, the present application effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0036] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, any equivalent modifications or alterations made by a person skilled in the art without departing from the spirit and technical concepts disclosed in this application shall be included within the scope of protection of this application.

Claims

1. A mechanical transmission component, comprising a transmission shaft (1), wherein a worm (2) is provided on one end surface of the transmission shaft (1) and a worm wheel (3) is connected to the other end thereof, characterized in that: The outer circumferential surface of the worm wheel (3) is evenly spaced with worm wheel teeth (7), and a tooth groove (10) is formed between two adjacent worm wheel teeth (7). One end of the tooth groove (10) extends through the end surface of the worm wheel (3) close to the worm (2). The tooth groove (10) consists of a straight tooth groove (8) and an arc-shaped tooth groove (9). The straight tooth groove (8) is tangent to the bottom of the arc-shaped tooth groove (9). The straight tooth groove (8) extends through the end surface of the worm wheel (3) close to the worm (2).

2. A mechanical transmission component according to claim 1, characterized in that: Retaining rings (5) for limiting the position of the worm wheel (3) are provided on both sides of the connection between the transmission shaft (1) and the worm wheel (3).

3. A mechanical transmission component according to claim 1, characterized in that: The surface of the connection between the transmission shaft (1) and the worm gear (3) is provided with knurling (6).

4. A mechanical transmission component according to claim 3, characterized in that: The knurling (6) is a plurality of ridges evenly spaced and extending along the axial direction of the transmission shaft (1) and protruding from the surface of the transmission shaft (1).

5. The mechanical transmission component according to claim 1, characterized in that: The worm gear teeth (7) are configured as helical teeth.

6. A mechanical transmission component according to claim 1, characterized in that: The worm wheel (3) is formed on the transmission shaft (1) by plastic injection molding.

7. A mechanical transmission component according to claim 1, characterized in that: An assembly hole (4) is provided at one end of the transmission shaft (1) close to the worm gear (3).

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