Cloth feeding cam combined structure
Through the combined structure of cloth feed cam made of plastic material with one-time injection molding, the problems of poor adaptability and high noise of existing sewing machines cloth feed cams are solved, and the accuracy adaptability and assembly convenience are achieved, and the use effect is improved.
Patent Information
- Application Number
- CN202421564534.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The cloth feed cams in existing sewing machines lack adaptability due to their metal material, which leads to difficulty in assembly, poor adaptability of cloth feed, and high noise.
The combined structure of the feed cam is made of plastic material with one-time injection molding, including the upper shaft, the feed cam, the fork, the upper shaft crank and the large connecting rod. Through the combined structure of these components, the accuracy adaptability and assembly convenience of the feed cam are achieved.
It realizes the accuracy adaptability of the cloth feed cam within a reasonable error range, is easy to assemble, has low noise, good wear resistance, and has good use effect, which is conducive to promotion.
Smart Images
Figure CN222758474U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing machines, in particular to a cloth feeding cam combined structure. Background Art
[0002] At present, the cloth feed cams commonly used in sewing machines on the market are usually made of metal materials. The defects of this conventional cloth feed cam are: since the cloth feed cam is made of metal materials, it lacks adaptability and can only be used with fixed precision. It cannot adapt to assembly within a reasonable error range, making cloth feeding difficult, resulting in assembly difficulties, poor cloth feeding adaptability, and high noise. Utility Model Content
[0003] The utility model aims to solve the problems existing in the prior art and provides a cloth feeding cam assembly structure. The cloth feeding cam is injection molded in one step, is easy to assemble, has good cloth feeding adaptability and low noise.
[0004] The utility model solves the technical problem by adopting a technical solution: the cloth feeding cam combination structure comprises an upper shaft, the upper shaft is connected with a cloth feeding cam, the cloth feeding cam is integrally formed, the cloth feeding cam is connected with a tooth fork contacting the cloth feeding cam, the cloth feeding cam is connected with an upper shaft crank, and the upper shaft crank is connected with a large connecting rod.
[0005] The cloth feeding cam is a cloth feeding cam integrally formed of plastic material.
[0006] An upper shaft crank cover is connected to the upper shaft crank, and the large connecting rod is located between the upper shaft crank cover and the upper shaft crank.
[0007] The upper shaft crank cover is installed on the upper shaft crank by the upper shaft crank screw.
[0008] The upper shaft crank screw is a cross slot upper shaft crank screw.
[0009] The beneficial effects of the utility model are as follows: the cloth feeding cam combined structure of the utility model, the cloth feeding cam is injection molded in one step, so that the cloth feeding cam can adapt to the use of varying precision within a reasonable range, can adapt to assembly, is easy to assemble, has good cloth feeding adaptability, low noise, good wear resistance, good use effect, and is conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0011] Figure 2 It is a side view of an embodiment of the utility model.
[0012] Figure 3 It is an exploded view of an embodiment of the utility model.
[0013] Explanation of the reference numerals: upper shaft 1, cloth feeding cam 2, tooth fork 3, upper shaft crank 4, large connecting rod 5, upper shaft crank cover 6, upper shaft crank screw 7. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings:
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0019] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the patent application specification and claims of the utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.
[0020] Referring to the accompanying drawings: the cloth feeding cam combination structure in this embodiment includes an upper shaft 1, and a cloth feeding cam 2 is connected to the upper shaft 1. The cloth feeding cam 2 is injection molded at one time. The cloth feeding cam 2 formed by injection molding at one time changes the traditional cloth feeding cam structure made of metal. Within a reasonable error range, the cloth feeding cam 2 formed by injection molding at one time can be directly matched with the cloth feeding system for use, has precision adaptability, reduces replacement and assembly, has strong adaptability, is easy to assemble, improves the adaptability of cloth feeding, has low noise, and has good wear resistance. The cloth feeding cam 2 is connected to a tooth fork 3 that contacts the cloth feeding cam 2, and the cloth feeding cam 2 is connected to an upper shaft crank 4, and the upper shaft crank 4 is connected to a large connecting rod 5, which reduces the use of parts and reduces costs.
[0021] The cloth feeding cam 2 is a plastic material integrally formed cloth feeding cam 2. In this way, the cloth feeding cam 2 made of plastic material has better material accuracy and appearance, is more convenient to assemble, and reduces the cost.
[0022] An upper shaft crank cover 6 is connected to the upper shaft crank 4 , and the large connecting rod 5 is located between the upper shaft crank cover 6 and the upper shaft crank 4 .
[0023] The upper shaft crank cover 6 is mounted on the upper shaft crank 4 through the upper shaft crank screw 7 .
[0024] The upper shaft crank screw 7 is a cross slot upper shaft crank screw.
[0025] The features of the embodiment of the utility model are as follows: the cloth feeding cam combined structure of the utility model, the cloth feeding cam is injection molded in one step, so that the cloth feeding cam can adapt to the use of varying precision within a reasonable range, can adapt to assembly, is easy to assemble, has good cloth feeding adaptability, low noise, good use effect, and is conducive to promotion.
[0026] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.
Claims
1. A cloth feeding cam assembly structure, characterized in that: The invention comprises an upper shaft (1), the upper shaft (1) is connected to a cloth feeding cam (2), the cloth feeding cam (2) is formed by one-step injection molding, the cloth feeding cam (2) is connected to a tooth fork (3) in contact with the cloth feeding cam (2), the cloth feeding cam (2) is connected to an upper shaft crank (4), and the upper shaft crank (4) is connected to a large connecting rod (5).
2. The cloth feeding cam assembly structure according to claim 1, characterized in that: The cloth feeding cam (2) is a cloth feeding cam (2) formed in one piece using a plastic material.
3. The cloth feeding cam assembly structure according to claim 1, characterized in that: The upper shaft crank (4) is connected to an upper shaft crank cover (6), and the large connecting rod (5) is located between the upper shaft crank cover (6) and the upper shaft crank (4).
4. The cloth feeding cam assembly structure according to claim 3, characterized in that: The upper shaft crank cover (6) is mounted on the upper shaft crank (4) via an upper shaft crank screw (7).
5. The cloth feeding cam assembly structure according to claim 4, characterized in that: The upper shaft crank screw (7) is a cross-slot upper shaft crank screw.