CN220870001U - Worm structure and worm wheel assembly - Google Patents

Abstract

The application provides a worm structure, which is provided with a worm unit arranged on a shaft rod, wherein the surface of the worm unit is annularly provided with equidistant spiral teeth, the cross section of the equidistant spiral teeth is provided with a plurality of tooth parts which are arranged at intervals, the tooth thickness of the tooth parts is gradually reduced from one end part to the other end part, and two side surfaces of each tooth part, which are contacted with a worm gear tooth, are cambered surfaces, so that when the worm unit is contacted with the worm gear tooth of a worm wheel, the tooth parts of the worm unit are contacted with the worm gear tooth to form surface contact, the cambered surfaces of the tooth parts of the worm unit are completely meshed with the worm gear tooth, thereby improving the stress area, improving the transmission efficiency, reducing the loss and prolonging the service life.

Description

Worm structure and worm wheel assembly

Technical Field

The application relates to the field of mechanical transmission, in particular to a worm structure and a worm and worm wheel assembly.

Background

The gear gap of the worm wheel set can influence the transmission precision, the gear gap can be adjusted under the state of not modifying the center distance of the gear box by adopting the double-lead worm wheel set at present, and the gear part is easy to abrade to generate gaps due to the fact that the contact area of the worm and the worm wheel is not large in practical operation, so that the power output is influenced to be in an unstable state, and the production efficiency is further influenced.

Disclosure of utility model

The application aims to provide a worm structure, in particular to a worm structure with high transmission efficiency and durability.

According to the application, a worm structure is provided, which comprises a worm unit arranged on a shaft rod, wherein the surface of the worm unit is provided with an equidistant helical tooth in a ring mode, the cross section of the equidistant helical tooth is provided with a plurality of tooth parts which are arranged at intervals, and two side faces of each tooth part, which are contacted with a worm gear tooth, are cambered surfaces.

Wherein the tooth thickness dimension of the plurality of teeth is gradually reduced from one end portion toward the other end portion.

Preferably, the application further comprises a worm and worm wheel assembly with the worm structure, thereby the worm structure can be meshed with the worm wheel, and the worm wheel are matched to achieve the optimal state, so that the stress area is increased, the abrasion is reduced, and the service life is prolonged.

Other features and embodiments of the present application are described in detail below with reference to the following drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a worm assembly of the present application;

fig. 2 is a schematic representation of the use of the present application.

Symbol description

10: Worm structure

11: Shaft lever

141A: one end part

141B: another end portion

142: Tooth part

143: Side surface

20: Worm wheel

21: Worm gear tooth

Detailed Description

The positional relationship described in the following embodiments includes: the upper, lower, left and right, unless otherwise indicated, are relative to the orientation of the elements shown in the drawings.

The application provides a worm and worm wheel assembly, which comprises a worm wheel 20 and a worm structure 10, wherein the worm structure 10 is meshed with the worm wheel 20. Referring to fig. 1 and 2, the worm structure 10 has a worm unit disposed on a shaft 11, wherein equidistant helical teeth are disposed on a surface of the worm unit, a plurality of teeth 142 are formed on a cross section of the equidistant helical teeth, and a tooth thickness dimension of the plurality of teeth 142 is gradually reduced from one end 141a to the other connecting end 141 b.

Further, each of the two sides 143 of the tooth portion 142 of the worm unit, which contacts the worm gear teeth 21 of the worm wheel 20, is a cambered surface, so that when the worm unit contacts the worm wheel 20, the tooth portion 142 of the worm unit contacts the worm gear teeth 21 (i.e. the cambered surface of the tooth portion 142 of the worm unit contacts the tooth surface of the worm gear teeth 21), so that the sides 143 of the tooth portion 142 of the worm unit can be fully meshed with the worm gear teeth 21, thereby improving the force receiving area, improving the transmission efficiency, and reducing the loss to prolong the service life.

The above examples and/or embodiments are merely illustrative of preferred examples and/or embodiments for implementing the technology of the present application, and are not intended to limit the implementation of the technology of the present application in any way, and any person skilled in the art should consider that the technology or examples substantially identical to the technology or embodiments of the present application can be modified or altered slightly without departing from the scope of the technical means disclosed in the present disclosure.

Claims (3)

1. The utility model provides a worm structure, has a worm unit to set up on a axostylus axostyle, and the surface ring of this worm unit is equipped with an equidistance helical tooth, equidistant helical tooth's cross section is formed with a plurality of interval arrangement's tooth portion, its characterized in that: the two sides of each tooth part contacted with one worm gear tooth are cambered surfaces.

2. The worm structure according to claim 1, wherein a tooth thickness dimension of the plurality of teeth becomes gradually smaller from one end portion toward the other end portion.

3. A worm-and-worm-gear assembly comprising a worm wheel and the worm structure of claim 1.