CN2255676Y - Bulb screw-jointing seat with symmetric segmental arc thread - Google Patents
Bulb screw-jointing seat with symmetric segmental arc thread Download PDFInfo
- Publication number
- CN2255676Y CN2255676Y CN 96203094 CN96203094U CN2255676Y CN 2255676 Y CN2255676 Y CN 2255676Y CN 96203094 CN96203094 CN 96203094 CN 96203094 U CN96203094 U CN 96203094U CN 2255676 Y CN2255676 Y CN 2255676Y
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- CN
- China
- Prior art keywords
- bulb
- arc shape
- threads
- screw thread
- segmental arc
- 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.)
- Ceased
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Abstract
The utility model provides a bulb screwing seat with symmetric segmental arc threads, which has favorable screwing accuracy and effect and is favorable for demoulding a mould. The neck part of the bulb screwing seat is provided with threads screwed with a bulb. The bulb screwing seat with symmetric segmental arc threads is characterized in that internal threads screwed with the bulb has corresponding discontinuous segmental arcs, a central angle corresponding to the arc length of the segmental arc threads is within the range of 90 DEG, and a symmetrical zone without the threads is arranged between two sets of segmental arc threads.
Description
The utility model relates to a kind of bulb, particularly a kind of bulb screw-jointing seat that symmetrical arc shape screw thread is arranged.
The screw-jointing seat of traditional Christmas ornament bulb is the needs that screw togather bulb, all screw-jointing seat neck internal perisporium is provided with continuous internal thread, in order to produce this internal thread, say in theory and can when extrusion molding, adopt rotary mould to process, but, have to be provided with the longitudinal metal contact and put the longitudinal fluting of adorning sheet metal because the screw-jointing seat inwall is a circuit turn-on, therefore, in fact can't use rotary die to carry out moulding.
For addressing this problem, can only adopt male model to carry out forced stripper mechanism at present to move axially because forced stripper mechanism causes double thread scratch and support to expand inevitably, make thread forming after precision can't guarantee, so the effect that is spirally connected of influence and bulb.
The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of prior art, and provide a kind of have two groups of corresponding discontinuous arc shape screw threads, processing and forming easily, the bulb screw-jointing seat.
The purpose of this utility model is to realize by following technical scheme, neck at the bulb screw-jointing seat is provided with the screw thread that screws mutually with bulb, it is characterized in that: with the internal thread that bulb screws mutually is to have corresponding discontinuous arc shape screw thread, the pairing central angle of the arc length of arc shape screw thread has the no threaded area of symmetry between two groups of arc shape screw threads in the following scope of 90 degree.
Therefore remarkable result of the present utility model is:
Owing to be designed to discrete arc shape screw thread with the internal thread that bulb screws mutually, and be a no threaded area between two groups of arc shape screw threads, this discontinuous form screw thread can adopt the flexible mould processing and forming with contractile function, move back mould after being beneficial to shrink, the needs of the normal demoulding had both been satisfied, can not cause the damage of double thread again, help the raising that screws thread quality and spin effect.
Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof.
Fig. 1 is a structural perspective of the present utility model.
Fig. 2 is a section of structure of the present utility model.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is result of use figure of the present utility model.
Fig. 5 is the profile that forms male mould of the present utility model.
Fig. 6 is the profile in time receiving in the interior movable mold of the male model of Fig. 5.
Below in conjunction with Fig. 1 to Fig. 6 concrete structure of the present utility model is described in detail.
Integrated screw-jointing seat 1 has the neck 12 of a trumpet-shaped opening portion 11 and a tubular, in neck 12 inwalls, be provided with the screw thread that screws mutually with bulb, in the axial respective slot 14A of neck 12 and 14B, be embedded with contact chip 15, it is characterized in that: constitute by having two groups of corresponding discontinuous arc shape screw thread 13A and 13B with the district 13 that screws togather that bulb screws mutually, the pairing central angle B of arc shape screw thread 13A and 13B below 90 degree, be embedded with the groove 14A of contact chip 15 and arc shape screw thread 13A that 14B is positioned at two correspondences and 13B locate separately 14 axially.Referring to Fig. 1 to Fig. 4.
Because at 90 degree when following, formed arc shape screw thread 13A and the 13B that screws togather district 13 all is no more than the scope that 1/4 circular arc is grown corresponding to central angle B, thereby two groups of arc shape screw threads circumferential two corresponding no threaded area 14 have appearred.
And be applicable to that above-mentioned arc shape screw thread 13A and 13B production forming mould should adopt Fig. 5 and mould shown in Figure 6, be that male model 2 is two halves formula structure, its inside is provided with movable mold 2A and 2B, during injection moulding, movable mold 2A, 2B struts, referring to Fig. 5, during the demoulding, make 2A, 2B retraction, two halves male model contract in slightly, referring to Fig. 6, the amplitude that contracts in it surpasses the scope of screw thread (13A and 13B), and therefore, male mould 2 reserves the space when contracting in the movable mold, movable mold (2A then, 2B) in the long scope of 1/4 circular arc that is no more than screw-jointing seat 1 inwall, this also screws togather the designed foundation of district's arc shape screw thread arc length just.
Claims (1)
1, the bulb screw-jointing seat that symmetrical arc shape screw thread is arranged, integrated screw-jointing seat (1) has the neck (12) of a trumpet-shaped opening portion (11) and a tubular, in neck (12) inwall, be provided with the screw thread that screws mutually with bulb, be embedded with contact chip (15) in the axial respective slot (14A) of neck (12) with (14B), it is characterized in that: screw togather district (13) by having two groups of corresponding discontinuous arc shape screw threads (13A) and (13B) constituting with bulb screws mutually, arc shape screw thread (13A) and (13B) pairing central angle B below 90 degree, be embedded with the groove (14A) of contact chip (15) and (14B) be positioned at the arc shape screw thread (13A) of two correspondences and locating separately (13B) (14) axial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96203094 CN2255676Y (en) | 1996-02-14 | 1996-02-14 | Bulb screw-jointing seat with symmetric segmental arc thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96203094 CN2255676Y (en) | 1996-02-14 | 1996-02-14 | Bulb screw-jointing seat with symmetric segmental arc thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255676Y true CN2255676Y (en) | 1997-06-04 |
Family
ID=33888819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96203094 Ceased CN2255676Y (en) | 1996-02-14 | 1996-02-14 | Bulb screw-jointing seat with symmetric segmental arc thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255676Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791484B (en) * | 2003-05-20 | 2010-06-16 | 山特维克知识产权股份有限公司 | An edge-carrying drill body, and a method for the manufacture of the same |
-
1996
- 1996-02-14 CN CN 96203094 patent/CN2255676Y/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791484B (en) * | 2003-05-20 | 2010-06-16 | 山特维克知识产权股份有限公司 | An edge-carrying drill body, and a method for the manufacture of the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20000315 Decision number of declaring invalidation: 1928 |