一种缝纫机的压脚限位结构

Abstract

本实用新型提供了一种缝纫机的压脚限位结构，属于缝纫机技术领域。它解决了如何提高压脚限位机构的拆装更换便捷性的问题。本缝纫机的压脚限位结构中，缝纫机包括装配有压脚杆的机壳，压脚杆下端固定有压脚，压脚限位结构包括固定于机壳的连接座和与连接座固连且抵贴压脚一侧的限位杆，连接座近底部侧壁开主连接孔，限位杆上端侧壁开副连接孔，连接座底部有榫头，限位杆上端有榫槽，榫头插接榫槽使两孔正对，榫头一侧有横向定位销，限位杆上端于榫槽一侧有下定位凹口、另一侧设限位凸部，连接座于榫头另一侧有上定位凹口，定位销嵌设于下定位凹口中，限位凸部嵌设于上定位凹口中。本缝纫机的压脚限位结构能够提高压脚限位机构的拆装更换便捷性。

Claims

1. A presser foot limiting structure of a sewing machine, the sewing machine comprising a machine housing (1) to which a presser bar (11) is attached, a lower end of the presser bar (11) being fixed with a presser foot (12), characterized in that, The presser foot limiting structure includes a connecting seat (2) fixed to the housing (1) by screws and a limiting rod (3) connected to the connecting seat (2) by screws and abutting against one side wall of the presser foot (12). A main connecting hole (21) is provided on the side wall near the bottom of the connecting seat (2), and a secondary connecting hole (31) is provided on the upper side wall of the limiting rod (3). The bottom of the connecting seat (2) has a tenon (22), and the upper end of the limiting rod (3) has a mortise (32). The tenon (22) is inserted into the mortise (32), and the main connecting hole (21) and the secondary connecting rod (3) are connected by screws. The connecting holes (31) are directly opposite each other. The tenon (22) has a positioning pin (221) on one side wall along the horizontal direction. The upper end of the limiting rod (3) is provided with a lower positioning recess (33) located on one side of the tenon (32). The upper end of the limiting rod (3) is also provided with a limiting protrusion (34) located on the other side of the tenon (32). The connecting seat (2) is provided with an upper positioning recess (23) located on the other side of the tenon (22). The positioning pin (221) is embedded in the lower positioning recess (33), and the limiting protrusion (34) is embedded in the upper positioning recess (23).

2. The presser foot limiting structure of the sewing machine according to claim 1, wherein The bottom of the connecting seat (2) is provided with notch 1 (24) and notch 2 (25) respectively. The tenon (22) is formed between notch 1 (24) and notch 2 (25). The top of the limiting rod (3) has a plate-shaped protrusion 1 (35) and protrusion 2 (36). The mortise (32) is formed between protrusion 1 (35) and protrusion 2 (36). The tenon (22) is embedded in the mortise (32). Protrusion 1 (35) is inserted into notch 1 (24), and protrusion 2 (36) is inserted into notch 2 (25).

3. The presser foot limiting structure of the sewing machine according to claim 2, wherein The main connecting hole (21) extends through the side wall of the first notch (24), the secondary connecting hole (31) is opened on the side wall of the first protrusion (35), the top of the first protrusion (35) has the limiting protrusion (34), the upper positioning recess (23) is opened on the side wall of the connecting seat (2) with the first notch (24), and the upper positioning recess (23) extends through the top side wall of the first notch (24), the lower positioning recess (33) is opened on the top of the first protrusion (35), and the positioning pin (221) is located in the second notch (25).

4. The presser foot limiting structure of the sewing machine according to claim 2 or 3, characterized in that, The upper positioning recess (23) is flared, and the top outer wall of the limiting protrusion (34) is arc-shaped.

5. The presser foot limiting structure of the sewing machine according to claim 4, wherein The positioning pin (221) is a cylindrical pin, and the opening edge of the lower positioning recess (33) and the top of the protrusion (36) are connected by an arc surface transition.

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