CN203131251U - Pipe joint structure - Google Patents
Pipe joint structure Download PDFInfo
- Publication number
- CN203131251U CN203131251U CN 201320060552 CN201320060552U CN203131251U CN 203131251 U CN203131251 U CN 203131251U CN 201320060552 CN201320060552 CN 201320060552 CN 201320060552 U CN201320060552 U CN 201320060552U CN 203131251 U CN203131251 U CN 203131251U
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- CN
- China
- Prior art keywords
- cutting ferrule
- nut
- inwall
- pipe
- pipe joint
- 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 provides a pipe joint structure which comprises a joint body, a nut, a front clamping sleeve and a rear clamping sleeve. The nut is connected on the joint body in a threaded mode. The front clamping sleeve and the rear clamping sleeve are arranged adjacently and are both placed between the joint body and the nut. The front clamping sleeve is connected with the joint body, and the rear clamping sleeve is connected with the inner end face of the nut. A circle structure which is small in the front and large in the back and is arranged in the axial direction from the end which is connected with the front clamping sleeve to the end where the rear clamping sleeve is connected with the inner end face of the nut is arranged on an inner bore of the rear clamping sleeve. According to the pipe joint structure, the inner wall of the rear clamping sleeve is designed to be the circle structure which is of a two-section or multi-section step type and is small in the front and large in the back, when a pipe is inserted in, a rear section with the large inner diameter has a guiding function, the pipe can be inserted in conveniently, and mounting time is shortened, Meanwhile, when the nut is screwed, the inner wall of the rear section with the large inner diameter is not contacted with the pipe, only a front section is contacted with the pipe and squeezes the pipe, and the torque which is needed in mounting is effectively reduced.
Description
Technical field
The utility model belongs to the link technical field of structures, relates in particular to a kind of pipe joint structure.
Background technique
Present two cutting ferrule pipe joints commonly used, joint body and nut all were to be in the hand tight condition when it dispatched from the factory, in the middle of forward and backward cutting ferrule is fixed on.
On the one hand, manufacturer is difficult to guarantee fully nut, back cutting ferrule, preceding being fastened on the same shaft axis when the assembling joint part; During the hand fastening nut, easily cause cutting ferrule generation radial deflection or inclination, make nut not overlapping with the interior axially bored line of back cutting ferrule.
On the other hand, in the transportation process of pipe joint, nut may become flexible, and also can cause cutting ferrule generation radial deflection or inclination, not with nut and joint body in axially bored line overlapping.
Though bore edges has the technology chamfering in the back cutting ferrule rear end of prior art, but chamfering is too little, chamfering length is too short, when the mounting pipe joint, the back cutting ferrule that radial deflection or inclination take place still may stop the insertion of pipe, need repeatedly adjust the pipe angle and cutting ferrule position, back could be inserted, installation is inconvenient; Simultaneously, internal diameter unanimity before and after the cutting ferrule of existing back, when nut screwing clamping, the front-end and back-end of back cutting ferrule all are in contact with one another extruding with pipe, need to consume extra mounting torque, and comparatively effort is installed.
The model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of pipe joint structure is provided, its simple, easy realization, the convenient installation.
The utility model is achieved through the following technical solutions: a kind of pipe joint structure, comprise joint body, nut, preceding cutting ferrule and back cutting ferrule, described nut thread is connected in described joint body, cutting ferrule and back cutting ferrule all are hollow ring housing shape before described, cutting ferrule and the back adjacent setting of cutting ferrule and all between described joint body and described nut before described, cutting ferrule and described joint body join before described, described back cutting ferrule joins with the interior edge face of described nut, on the cutting ferrule endoporus of described back from an end that joins with described preceding cutting ferrule backward the end that joins of cutting ferrule and described nut interior edge face be provided with pre-small post-large loop configuration vertically.
Particularly, described loop configuration by at least two sector holes without leave described back cutting ferrule with described before the end that joins to described back cutting ferrule and described nut interior edge face of the end that joins of the cutting ferrule cylndrical surface or the conical surface that increase vertically form.
Particularly, described loop configuration comprises leading portion inwall and back segment inwall, described leading portion inwall be close to described before cutting ferrule, described back segment inwall is close to the end that described back cutting ferrule and described nut interior edge face join, the diameter of described leading portion inwall is less than the diameter of described back segment inwall.
Particularly, be connected by inclined-plane or cambered surface between described leading portion inwall and the described back segment inwall.
Preferably, the radial distance of described leading portion inwall and described back segment inwall is not less than 0.05 millimeter and be not more than 0.26 millimeter.
Preferably, the radial distance of described leading portion inwall and described back segment inwall is 0.14 millimeter.
A kind of pipe joint structure that the utility model provides, it is by being designed to pre-small post-large loop configuration with back cutting ferrule inwall, this segmentation ledge structure, when the mounting pipe joint, even back cutting ferrule generation radial deflection or inclination under the hand tight condition, the big rear end inwall in aperture also can enter the little inwall in aperture by guiding pipe on the back cutting ferrule, makes things convenient for the insertion of pipe, shortens the installation time.When nut screwing clamping, back cutting ferrule has only leading portion and pipe to come in contact extruding, avoided the contact extruding of back segment with pipe, the area of contact of minimizing between back cutting ferrule and pipe, effectively reduced moment of torsion required when installing, installation process is time saving and energy saving, has made things convenient for user's installation and use, and simple in structure, easy realization.
Description of drawings
Fig. 1 is the cross-sectional view of the pipe joint that provides of the utility model embodiment;
Fig. 2 is that the pipe joint that the utility model embodiment provides is installed preceding local enlarged diagram;
Fig. 3 is the cross-sectional view of the back cutting ferrule in the pipe joint that provides of the utility model embodiment;
Fig. 4 is the local enlarged diagram of the pipe joint that provides of the utility model embodiment when installing;
Fig. 5 is the local enlarged diagram during the pipe joint that provides of the utility model embodiment is installed;
Fig. 6 is that the pipe joint that provides of the utility model embodiment is installed the cross-sectional view after tightening;
Fig. 7 is that the pipe joint that provides of the utility model embodiment is installed the local enlarged diagram after tightening;
Fig. 8 is that another pipe joint that the utility model embodiment provides is installed preceding cross-sectional view;
Fig. 9 is another pipe joint that the utility model embodiment provides local enlarged diagram when installing;
Figure 10 is that another pipe joint that the utility model embodiment provides is tightened preceding cross-sectional view;
Figure 11 is the cross-sectional view of back cutting ferrule in another pipe joint of providing of the utility model embodiment;
Figure 12 is that another pipe joint that the utility model embodiment provides is installed the cross-sectional view after tightening;
Figure 13 is that another pipe joint that the utility model embodiment provides is installed the local enlarged diagram after tightening.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As Fig. 1～shown in Figure 3, a kind of pipe joint structure that the utility model embodiment provides, comprise joint body 1, nut 2, preceding cutting ferrule 3 and back cutting ferrule 4, described nut 2 is threadedly connected to described joint body 1, cutting ferrule 3 and back cutting ferrule 4 all are hollow ring housing shape before described, cutting ferrule 3 and back cutting ferrule 4 adjacent settings and all between described joint body 1 and described nut 2 before described, front end and the described joint body 1 of cutting ferrule 3 join before described, the rear end of described back cutting ferrule 4 and the interior edge face of described nut 2 join, better understand the utility model for the ease of those skilled in the art, back cutting ferrule 4 is defined as the front end of back cutting ferrule 4 near an end of preceding cutting ferrules 3, the rear end of cutting ferrule 4 after back cutting ferrule 4 is defined as near an end of nut 2 interior edge faces.In concrete the application, cutting ferrule 3 before pipe 5 stretches into and is inserted to from the rear end of back cutting ferrule 4.Pipe joint structure provided by the utility model, on cutting ferrule 4 endoporus of described back from described before the end that joins of cutting ferrule 3 to being provided with pre-small post-large loop configuration vertically with back cutting ferrule 4 and the end that described nut 2 interior edge faces join.It can play the effect of guiding to pipe 5 pre-small post-large loop configuration, when pipe 5 inserts, namely skew has taken place or has tilted not and nut 2 concentrics in cutting ferrule 4 after an action of the bowels, because back of the present utility model cutting ferrule 4 back segment internal face levels are higher than pipe 5 end angles, pipe 5 still can insert smoothly, and pre-small post-large loop configuration can make back cutting ferrule 4 radially be offset to the direction with nut 2 axle center when pipe 5 inserts, pipe 5 can pass back cutting ferrule 4 smoothly, enter before cutting ferrule 3 and join until inserting with joint body 1, installation process is unaffected.The utility model is by being designed to pre-small post-large ring-shaped step structure with back cutting ferrule 4 inwalls, when the mounting pipe joint, even radial deflection or inclination take place in the back cutting ferrule under the hand tight condition 4, the big back segment inwall in aperture also can enter the little inwall in aperture by guiding pipe 5 on the back cutting ferrule 4, make things convenient for the insertion of pipe 5, shorten the installation time.When nut 2 is tightened, back cutting ferrule 4 has only leading portion and pipe 5 to come in contact extruding, avoided the contact extruding of back segment with pipe 5, the area of contact of minimizing between back cutting ferrule 4 and pipe 5, effectively reduced moment of torsion required when installing, installation process is time saving and energy saving, has made things convenient for user's installation and use, and simple in structure, easy realization.
Particularly, as Fig. 1～shown in Figure 3, described loop configuration is made up of from cylndrical surface or conical surface that described back cutting ferrule 4 front ends increase to the back-end vertically gradually the aperture.
Particularly, as Fig. 1～shown in Figure 3, described loop configuration comprises leading portion inwall 46 and back segment inwall 44, leading portion inwall 46 is close to described preceding cutting ferrule 3, back segment inwall 44 is close to the end that described back cutting ferrule 4 and described nut 2 interior edge faces join, and the diameter of described leading portion inwall 46 is less than the diameter of described back segment inwall 44.
In the present embodiment, as Fig. 1～shown in Figure 3, the inwall of back cutting ferrule 4, it can be increased successively by front end to aperture, rear end, the diameter of back segment inwall 44 is greater than the diameter of pipe 5 outer walls, and the back segment place is provided with technology chamfer surface 43, and the diameter of leading portion inwall 46 is near the diameter of pipe 5 outer walls, adjacent two sections inwalls are linked to each other by 45 transition of transition inclined-plane, and transition inclined-plane 45 can be inclined-plane or cambered surface.
Particularly, as Fig. 1～shown in Figure 3, be connected by cambered surface or inclined-plane 45 between described leading portion inwall 46 and the described back segment inwall 44, described transitional surface 45 can play the effect of guiding, in pipe 5 insertion process, can make back cutting ferrule 4 to moving radially with nut 2 axle direction, so that pipe 5 can insert smoothly.
Preferably, as Fig. 1～shown in Figure 7, described leading portion inwall 46 is t with the radial distance of described back segment inwall 44, and t is not less than 0.05 millimeter and be not more than 0.26 millimeter.Certainly, be appreciated that ground, leading portion inwall 46 also can be set at other suitable numerical value with the radial distance of described back segment inwall 44, all belongs to protection domain of the present utility model.
In the present embodiment; described leading portion inwall 46 is 0.14 millimeter with the radial distance t of described back segment inwall 44, certainly, is appreciated that ground; leading portion inwall 46 also can be set at other suitable numerical value with the radial distance of described back segment inwall 44, all belongs to protection domain of the present utility model.
Particularly, as Fig. 1～shown in Figure 7, described before cutting ferrule 3 be close to an end of described back cutting ferrule 4, be provided with taper hole 32; The front end of described back cutting ferrule 4 stretches in the described taper hole 32, and the arranged outside that described back cutting ferrule 4 stretches into the end in the described taper hole 32 has the conical surface 41 that cooperates with described taper hole 32.
Particularly, as Fig. 1～shown in Figure 7, the interior edge face of described nut 2 is set to the conical surface, and the rear end of described back cutting ferrule 4 is set to the tapered end face 42 that the interior edge face with described nut 2 is complementary.
In the present embodiment, as Fig. 1～shown in Figure 7, the outer side wall radial protrusion of the rear end of back cutting ferrule 4, its with the interior edge face of nut 2 between can cooperate well and contact.
In the concrete installation process, partial structurtes enlarged view when being illustrated in figure 4 as the utility model installation, insertion along with pipe 5, when pipe 5 end angles 51 touch transition inclined-plane 45, pipe 5 end angles 51 impose on 45 1 component radially in transition inclined-plane, force back cutting ferrule 4 to recover the centering position automatically, the tapered front end face 41 of while back cutting ferrule 4 is the conical surface of the preceding cutting ferrule 3 rear end taper holes 32 of lifting radially, cutting ferrule 3 also recovers the centering position before forcing, transition inclined-plane 45 guiding pipes 5 enter first section inwall 46, and then cutting ferrule 3 before entering smoothly.
Figure 6 shows that the structural representation after pipe 5 inserts fully, cutting ferrule 3 internal faces 31, back cutting ferrule 4 leading portion internal faces 46 are pressed close to tube wall face 52 before this moment.
Figure 6 shows that the structural representation after the utility model nut 2 is tightened, after pipe 5 inserted smoothly, nut 2 to the required number of turns that screws up with a wrench can realize clamping and sealing.
Fig. 7 is the partial enlarged drawing after the utility model nut 2 is tightened, when fastening nut 2, the ear end face 42 of back cutting ferrule 4 overlaps with nut 2 drive surface, the conical surface mutual extrusion of back cutting ferrule 4 tapered front end faces 41 and preceding cutting ferrule 3 rear end taper holes 32, leading portion internal face 46 and tube wall 52 mutual extrusion of back cutting ferrule 4, back segment internal face 44 does not contact with tube wall 52.Compare with the installation effect of prior art, back cutting ferrule 4 has only leading portion internal face 44 and pipe 5 to come in contact extruding in the utility model, back segment internal face 44 does not contact extruding with pipe 5, required torque when both having reduced installation, make the easier pipe 5 that snaps in of back cutting ferrule 4 front ends again, realize the good effect that clamps.
According to an aspect of the present utility model, satisfying under the easy-to-install prerequisite, back cutting ferrule 4 inwalls are further specified, when after between cutting ferrule 4 leading portion internal faces 46 and the back segment internal face 44 perpendicular distance be t, t is in 0.05mm～0.26mm scope, could better realize installation effect shown in Figure 9, cutting ferrule 4 leading portion internal faces 46 in back are preferably 0.14mm with back segment internal face 44 perpendicular distance t in the present embodiment.
Fig. 8 to Figure 13 is another kind of preferred structure of the present utility model, and as shown in the figure, this cutting ferrule inwall is multi-segment structure, comprises horizontal leading portion and gradual change type taper rear end, also can play the effect that guiding is aimed at.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace or improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. pipe joint structure, comprise joint body, nut, preceding cutting ferrule and back cutting ferrule, described nut thread is connected in described joint body, cutting ferrule and back cutting ferrule all are hollow ring housing shape before described, cutting ferrule and the back adjacent setting of cutting ferrule and all between described joint body and described nut before described, cutting ferrule and described joint body join before described, the interior edge face of described back cutting ferrule and described nut joins, it is characterized in that, on the cutting ferrule endoporus of described back from described before the end that joins of cutting ferrule backward the end that joins of cutting ferrule and described nut interior edge face be provided with pre-small post-large loop configuration vertically.
2. a kind of pipe joint structure according to claim 1, it is characterized in that cylndrical surface or conical surface that the end that the end that described loop configuration is joined from described back cutting ferrule and preceding cutting ferrule by the aperture joins to described cutting ferrule afterwards and described nut interior edge face increases are vertically formed.
3. a kind of pipe joint structure according to claim 1, it is characterized in that, described loop configuration comprises leading portion inwall and back segment inwall at least, described leading portion inwall is close to described preceding cutting ferrule one end, described back segment inwall is close to the end that described back cutting ferrule and described nut interior edge face join, and the diameter of described leading portion inwall is less than the diameter of described back segment inwall.
4. a kind of pipe joint structure according to claim 3 is characterized in that, is connected by inclined-plane or cambered surface between described leading portion inwall and the described back segment inwall.
5. a kind of pipe joint structure according to claim 3 is characterized in that, the radial distance of described leading portion inwall and described back segment inwall is not less than 0.05 millimeter and be not more than 0.26 millimeter.
6. a kind of pipe joint structure according to claim 5 is characterized in that, the radial distance of described leading portion inwall and described back segment inwall is 0.14 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060552 CN203131251U (en) | 2013-02-01 | 2013-02-01 | Pipe joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060552 CN203131251U (en) | 2013-02-01 | 2013-02-01 | Pipe joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131251U true CN203131251U (en) | 2013-08-14 |
Family
ID=48939230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320060552 Expired - Fee Related CN203131251U (en) | 2013-02-01 | 2013-02-01 | Pipe joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203131251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500455A (en) * | 2018-05-16 | 2019-11-26 | 深圳市飞托克实业有限公司 | Double card covers connection component |
| CN113639104A (en) * | 2021-07-21 | 2021-11-12 | 上海外高桥造船有限公司 | Cabin-penetrating clamping sleeve joint for ship |
-
2013
- 2013-02-01 CN CN 201320060552 patent/CN203131251U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500455A (en) * | 2018-05-16 | 2019-11-26 | 深圳市飞托克实业有限公司 | Double card covers connection component |
| CN110500455B (en) * | 2018-05-16 | 2021-11-09 | 深圳市飞托克实业有限公司 | Double-clamping sleeve connecting assembly |
| CN113639104A (en) * | 2021-07-21 | 2021-11-12 | 上海外高桥造船有限公司 | Cabin-penetrating clamping sleeve joint for ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20210201 |