CN202954224U - Needle rod driving device - Google Patents
Needle rod driving device Download PDFInfo
- Publication number
- CN202954224U CN202954224U CN 201220648140 CN201220648140U CN202954224U CN 202954224 U CN202954224 U CN 202954224U CN 201220648140 CN201220648140 CN 201220648140 CN 201220648140 U CN201220648140 U CN 201220648140U CN 202954224 U CN202954224 U CN 202954224U
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- CN
- China
- Prior art keywords
- torsion spring
- hole
- driving device
- spring body
- retainer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a needle rod driving device. The needle rod driving device comprises a retainer and a rotating block, wherein the retainer and the rotating block are connected in a rotating way; a first through hole and a second through hole are respectively formed in the retainer and the rotating block; a torsion spring is arranged between the first through hole and the second through hole; the torsion spring comprises a torsion spring body and a locating rod arranged at the tail end of the torsion spring body; the locating rod is bent to point to the direction of the torsion spring body; and the locating rod of the torsion spring is arranged to point to the direction of the torsion spring body, so that the tail end of the torsion spring body does not need to be radially pulled away when the torsion spring is mounted, the locating rod can be directly and radially extruded, the deformation of the torsion spring in the mounting process can be reduced, the mounting efficiency of the torsion spring can be improved, and the quality of the assembled needle rod driving device can be guaranteed.
Description
Technical field
The utility model belongs to the industrial sewing machine technical field, the special needle bar driver device for industrial sewing machine.
Background technology
A torsion spring that plays clutch action is arranged in the needle bar driver device of industrial sewing, because the global design demand of needle bar driver device and torsion spring shared space after assembling completes is less, and the end of torsion spring keeping out of the way before installing is subject to self and arranges the restriction around structure, cause the assembling of torsion spring when practical set very difficult, traditional torsion spring as shown in Figure 1, generally comprise torsion spring body and the backstay that is arranged on body tip, the backstay of tradition torsion spring is general all towards the direction away from the torsion spring body, the assembly crewman needs first torsion spring radially to be pulled open by subterminal torsion spring body part when this torsion spring of assembling, again the torsion spring axial compression could be squeezed into backstay to the torsion spring installing hole of needle bar driver device, and so the assembly crewman makes the torsion spring distortion to the processing ease of torsion spring, increase torsion spring body row around coil between gap, needle bar driver after making to assemble produces friction at work, send noise.
Summary of the invention
The utility model is for the prior art deficiency, a kind of needle bar driving device is provided, and the torsion spring on this kind of needle bar driving device can make the retreating position of assembling quite reasonable, and can not cause the deformation of torsion spring, can improve the efficiency of assembling, guarantee the quality of the rear needle bar driver device of assembling.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of needle bar driving device, comprise retainer and moving block, described retainer and described moving block are rotationally connected, be respectively arranged with the first through hole and the second through hole on described retainer and moving block, be provided with torsion spring between described the first through hole and described the second through hole, described torsion spring comprises the torsion spring body and is arranged on the backstay of described torsion spring body tip, the direction of described torsion spring body is pointed in described backstay bending, the backstay of torsion spring is arranged to point to the direction of torsion spring body, can make torsion spring when being installed into the first through hole and the second through hole, keep out of the way and can not cause the permanent deformation of torsion spring, make the precision of torsion spring work higher, guarantee the quality of needle bar driving device.
In technique scheme, described torsion spring body for row around coil, traditional torsion spring be all basically row around coil, cost is low, effective.
In technique scheme, preferred, described retainer two ends are provided with coaxial third through-hole and fourth hole, and described moving block two ends are provided with rotating shaft and coordinate and be rotationally connected with third through-hole and fourth hole.
In technique scheme, preferably, be provided with the annular rotating disk between described third through-hole and described rotating shaft, the outer middle side part of described annular rotating disk is provided with cannelure, be provided with described torsion spring in described cannelure, in annular groove, fixedly torsion spring can make torsion axis to not sliding, and improves the precision of torsion spring running, guarantees the quality of needle bar driving device.
The utility model compared with prior art, have following beneficial effect: the utility model is when mounted because the backstay of torsion spring points to torsion spring body direction, make this kind of torsion spring not need when mounted radially torsion spring body tip part radially to be pulled open again, can directly compress axially backstay, can reduce the distortion in the torsion spring installation process, and can improve the torsion spring installation effectiveness, guarantee the quality of the rear needle bar driver device of assembling.
The accompanying drawing explanation
The structural representation that Fig. 1 is traditional torsion spring.
The structural representation that Fig. 2 is torsion spring in the utility model embodiment.
The structural representation that Fig. 3 is the utility model embodiment.
The enlarged drawing that Fig. 4 is A place in Fig. 3.
The structural representation that Fig. 5 is retainer.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail: referring to shown in Fig. 2 to 5, a kind of needle bar driving device, comprise retainer 1 and moving block 2, described retainer 1 two ends are provided with coaxial third through-hole 12 and fourth hole 13, described moving block 2 two ends are provided with rotating shaft and coordinate and be rotationally connected with third through-hole 12 and fourth hole 13, be provided with annular rotating disk 4 between described third through-hole 12 and described rotating shaft, the outer middle side part of described annular rotating disk 4 is provided with cannelure 41, in described cannelure 41, torsion spring 3 is installed, at the interior fixedly torsion spring 3 of annular groove 41, can make torsion spring 3 axially not slide, improve the operating accuracy of torsion spring 3, be provided with the first through hole 11 near the third through-hole 12 of described retainer 1, the upper end of described moving block 2 is provided with the second through hole 21, the backstay 32 of described torsion spring 3 is plugged in the first through hole 11 and the interior fixing described torsion spring 3 of described the second through hole 21, described torsion spring 3 comprises torsion spring body 31 and is arranged on the backstay 32 of described torsion spring body 31 ends, the direction of described torsion spring body 31 is pointed in described backstay 32 bendings, the backstay of torsion spring 3 32 is arranged to point to the direction of torsion spring body 31, can make torsion spring 3 when being installed into the first through hole 11 and the second through hole 21, keep out of the way and can not cause the permanent deformation of torsion spring 3, make the precision of torsion spring 3 work higher, guarantee the quality of needle bar driving device, described torsion spring body 31 for row around coil, traditional torsion spring 3 be all basically row around coil, cost is low, effective.
Claims (4)
1. a needle bar driving device, comprise retainer (1) and moving block (2), it is characterized in that: described retainer (1) and described moving block (2) are rotationally connected, be respectively arranged with the first through hole (11) and the second through hole (21) on described retainer (1) and moving block (2), be provided with torsion spring (3) between described the first through hole (11) and described the second through hole (21), described torsion spring (3) comprises torsion spring body (31) and is arranged on the backstay (32) of described torsion spring body (31) end, the direction of described torsion spring body (31) is pointed in described backstay (32) bending.
2. a kind of needle bar driving device as claimed in claim 1 is characterized in that: described torsion spring body (31) for row around coil.
3. a kind of needle bar driving device as claimed in claim 1, it is characterized in that: described retainer (1) two ends are provided with coaxial third through-hole (12) and fourth hole (13), and described moving block (2) two ends are provided with rotating shaft and coordinate and be rotationally connected with third through-hole (12) and fourth hole (13).
4. a kind of needle bar driving device as claimed in claim 3, it is characterized in that: be provided with annular rotating disk (4) between described third through-hole (12) and described rotating shaft, the outer middle side part of described annular rotating disk (4) is provided with cannelure (41), is provided with described torsion spring (3) in described cannelure (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648140 CN202954224U (en) | 2012-11-30 | 2012-11-30 | Needle rod driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648140 CN202954224U (en) | 2012-11-30 | 2012-11-30 | Needle rod driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954224U true CN202954224U (en) | 2013-05-29 |
Family
ID=48459804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648140 Expired - Fee Related CN202954224U (en) | 2012-11-30 | 2012-11-30 | Needle rod driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954224U (en) |
-
2012
- 2012-11-30 CN CN 201220648140 patent/CN202954224U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131130 |