CN102535000B

CN102535000B - Dustproof latch needle

Info

Publication number: CN102535000B
Application number: CN2011104294903A
Authority: CN
Inventors: 田建明
Original assignee: CHANGZHOU SICHENG KAIYE PRECISION NEEDLE CO LTD
Current assignee: CHANGZHOU SICHENG KAIYE PRECISION NEEDLE CO LTD
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2013-12-11
Anticipated expiration: 2031-12-20
Also published as: CN102535000A

Abstract

The invention discloses a dustproof latch needle which comprises a needle handle, a needle hook and a needle tongue, wherein the needle hook is positioned at the top of one end of the needle handle; one end of the needle handle, which is close to the needle hook, is provided with a needle tongue seam; one end of the needle tongue is rotatably arranged in the needle tongue seam; the other end of the needle tongue is extended out of a needle belly; a needle back is opposite to the needle belly in the direction; the boundary of one end of the needle tongue seam, which is far away from the needle hook, is defined by a first surface; the boundary of one end of the needle tongue seam, which is connected with the needle hook, is defined by a second surface; the first surface is arc-shaped; a bulge is arranged at one side of the needle tongue seam in the direction of the needle belly and is a plastic deformation part; a groove is arranged on the needle back in the direction far away from the needle hook and is connected with the needle tongue seam; one end of a latch needle spring is a fixing end and is fixed in the groove, and the other end of the latch needle spring is a movable end and is lapped on the second surface. The sensitivity of the needle tongue of the dustproof latch needle to errors is reduced in the working process so that the dustproof latch needle is reliable to operate and has longer service life; and the shape and position of the first surface are more beneficial to the elimination of dirt in the needle tongue seam.

Description

Dustproof latch needle

Technical field

The present invention relates to the flat machine technical field, particularly relate to a kind of dustproof latch needle.

Background technology

Current latch needles is in the process of using, and needle latch can swing on both sides, and an end swings to closed position, and needle latch is placed on pinhock, and an end swings to rear position, and needle latch rests on the end face of needle latch seam away from pinhock one end.Needle latch susceptibility to error in the process of work is high like this, is unfavorable for operation, and service life is not long yet, and the dirt of needle latch in stitching easily pile up, not easy to clean.

Summary of the invention

The technical issues that need to address of the present invention are needle latches in the process of work the susceptibility to error is high, are unfavorable for operation, and service life is not long yet, and the dirt of needle latch in stitching easily pile up, not easy to clean.

For solving the problems of the technologies described above, the invention provides a kind of dustproof latch needle, comprise needle handle, pinhock and needle latch, pinhock is positioned at the top of needle handle one end, needle handle is provided with the needle latch seam at the end near pinhock, needle latch one end is rotating to be arranged in the needle latch seam, the other end stretches out from the pin tripe, needle back and pin tripe opposite direction, needle latch is sewn on an end away from pinhock by the first surface limited boundary, at an end that connects pinhock by the second surface limited boundary, first surface is arc, one side of needle latch seam, be provided with projection on the direction of pin tripe, projection is the plastic deformation part, direction away from pinhock on needle back has a groove, with the needle latch seam, be connected, one end of needle latch spring is stiff end, be fixed in groove, the other end is stiff end not, ride on second surface.

Needle latch of the present invention susceptibility to error in the process of work has reduced, and makes operation reliable, longer service life, and the product quality processed is better, and the setting of the shape of first surface and position more is conducive to the removing of dirt in the needle latch seam.

As the preferred technical solution of the present invention, described needle latch spring is fixed in described groove by Laser Welding.Laser Welding is not only easy to operate, also makes weld seam more solid attractive in appearance simultaneously.

Dustproof latch needle of the present invention susceptibility to error in the process of work has reduced, and makes operation reliable, longer service life, and the product quality processed is better, and the setting of the shape of first surface and position more is conducive to the removing of dirt in the needle latch seam.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is upward view of the present invention.

Wherein, 1-needle handle, 2-pinhock, 3-needle latch, 4-needle latch seam, 5-groove, 6-needle latch spring, 7-projection, 8-first surface, 9-second surface, 10-pin tripe, 11-needle back.

The specific embodiment

As shown in the figure, dustproof latch needle of the present invention, comprise needle handle 1, pinhock 2 and needle latch 3, pinhock 2 is positioned at the top of needle handle 1 one ends, needle handle 1 is provided with needle latch seam 4 at the end near pinhock 2, needle latch 3 one ends are rotating to be arranged in needle latch seam 4, the other end stretches out from pin tripe 10, needle latch seam 4 end reverse at pinhock 2 is by first surface 8 limited boundaries, an end reverse at pinhock 2 is by second surface 9 limited boundaries, first surface 8 is arc, one side of needle latch seam 4, be provided with projection 7 on the direction of pin tripe 10, projection 7 is the plastic deformation part, direction away from pinhock 2 on needle back 11 has a groove 5, with needle latch seam 4, be connected, one end of needle latch spring 6 is stiff end, be fixed in groove 5, the other end is stiff end not, ride on second surface 9.

Dustproof latch needle of the present invention is in the process of using, needle latch can swing on both sides, one end swings to closed position, needle latch is placed on pinhock, the part that now latch needles is positioned at needle latch seam can overwhelm on the needle latch spring, make the needle latch spring produce a distortion, the needle latch spring rides over the needle latch seam and can move up along described end face by the end on end face, needle latch is produced to resiliency, needle latch of the present invention like this susceptibility to error in the process of work has reduced, make operation reliable, longer service life, and the product quality processed is better; And needle latch is while swinging to the position away from pinhock, can enter in the needle latch seam and remove dirt, avoid the accumulation of crud layer, when not needing to carry out the cleaning of needle latch seam, needle latch can move to projection and get final product, when needs carry out the cleaning of needle latch seam, because projection is the plastic deformation part, so firmly pull needle latch can cross projection cleaning needle latch seam.

Dustproof latch needle of the present invention susceptibility to error in the process of work has reduced, and makes operation reliable, longer service life, and the product quality processed is better, and the setting of the shape of first surface and position more is conducive to the removing of dirt in the needle latch seam; Laser Welding is not only easy to operate, also makes weld seam more solid attractive in appearance simultaneously.

Claims

1. a dustproof latch needle, comprise needle handle (1), pinhock (2) and needle latch (3), described pinhock (2) is positioned at the top of described needle handle (1) one end, described needle handle (1) is provided with needle latch seam (4) at the end near described pinhock (2), described needle latch (3) one ends are rotating to be arranged in described needle latch seam (4), the other end stretches out from pin tripe (10), needle back (11) and described pin tripe (10) opposite direction, described needle latch seam (4) at the end away from described pinhock (2) by first surface (8) limited boundary, at an end that connects described pinhock (2) by second surface (9) limited boundary, have a groove (5) in the upper direction away from described pinhock (2) of described needle back (11), with described needle latch seam (4), be connected, it is characterized in that: described first surface (8) is arc, one side of described needle latch seam (4), be provided with projection (7) on the direction of described pin tripe (10), described projection (7) is the plastic deformation part, one end of needle latch spring (6) is stiff end, be fixed in described groove (5), the other end is stiff end not, ride on described second surface (9).

2. dustproof latch needle as claimed in claim 1, it is characterized in that: described needle latch spring (6) is fixed in described groove (5) by Laser Welding.