CN202946529U - Rotary-type folding and positioning joint - Google Patents
Rotary-type folding and positioning joint Download PDFInfo
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- CN202946529U CN202946529U CN 201220712342 CN201220712342U CN202946529U CN 202946529 U CN202946529 U CN 202946529U CN 201220712342 CN201220712342 CN 201220712342 CN 201220712342 U CN201220712342 U CN 201220712342U CN 202946529 U CN202946529 U CN 202946529U
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- connecting body
- hole
- locking
- rotary type
- pedestal
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Abstract
The utility model discloses a rotary-type folding and positioning joint which comprises two connecting bodies 1,2, a locking positioning column 3 and a spring 4, wherein one end of the first connecting body 1 is provided with a connecting base 11; the connecting base 11 is internally provided with a blind hole 12; the wall of the blind hole 12 is provided with an involute spline 5; one end of the second connecting body 2 is provided with a stepped circular through hole 21; the wall of the upper step hole 211 of the stepped circular through hole 21 is provided with the involute spline 5; the periphery of the locking positioning column 3 is provided with the involute spline 5; the spring 4 is arranged in the blind hole 12; the lower end surface of the locking positioning column 3 is connected with the spring 4; the inner wall of the lower step hole 212 of the second connecting body 2 is movably connected with the outer wall of the circular connecting base 11 of the first connecting body 1 in a clearance fit way; and the involute spline 5 of the locking positioning column 3 is locked with the involute spline 5 positioned on the wall of the blind hole 12 and the involute spline 5 positioned on the wall of the upper step hole 212 in a mutually meshed way. The rotary-type folding positioning joint disclosed by the utility model has the advantages of reasonability in structure, easiness for assembly, no gap between assembly parts, flexibly in rotation and fold and firmness in locking and positioning.
Description
Technical field
The utility model relates to a kind of connection joint structure capable of being positioned, relates in particular to a kind of rotary type foldable positioning joint.
Background technique
In daily life, a lot of products are arranged under its non-working condition, after it need to being rolled over, occupy more space to reduce it, be conducive to like this placement, packing and the transportation of product.And work as it under the use state, need again product is opened and made it be fixed into definite shape.As folding table, foldable chair, folding bicycle, Foldable baby carriage etc.The folding of these products closes up and opens and be fixed into definite shape, and what usually adopt is the rotary type foldable positioning joint.The rotary type foldable positioning joint, generally to install in the jointing place of two links to rotate and positioner, when needs folding joint ventures holds together, unclamp positioner, two links rotate around the axis to close up and are piled up, and when it need to use, two links are opened into the use state, start positioner, two links can not be rotated and stationary positioned.In the prior art, State Patent Office discloses a kind of foldable positioning joint mechanism technology with notification number CN202054300U, this mechanism comprise upper cover, button, connection pad, upper shell, separately teeth dish, spring, lower shell body be connected with connection iron axle be connected the iron axle and be connected pad and be connected and fixed with described between described upper shell and lower shell body, described spring and separately the teeth dish be arranged between described upper shell and lower shell body.This technology has solved preferably turning folding of two links and has unclamped and locking and positioning.But the component of its setting are more, and structure is more complicated, assemble loaded down with trivial detailsly, and corresponding fabricating cost is higher.Other foldable positioning joints of prior art, all there is complex structure in majority, assembles loaded down with trivial detailsly, but also exists the not firm and thin frangibility of link wall of locking and positioning and assembling to conform to adopt pressing between part and produces defective or the deficiencies such as the gap is large.
The model utility content
The technical problem that (one) will solve
The technical problems to be solved in the utility model is, provide a kind of rational in infrastructure, assembling simply and between assembly parts is not stayed the gap, turn folding flexibly, the rotary type foldable positioning joint that locking and positioning is firm, more complicated to overcome the structure that exists in prior art, component are many, assemble loaded down with trivial details, the defective such as locking and positioning is not firm.
(2) technological scheme
for achieving the above object, the utility model provides a kind of rotary type foldable positioning joint, comprise the first link body, the second connecting body, the locking and positioning post, spring, it is characterized in that, one end of described the first connecting body is provided with a circular pedestal that connects, the circular connection in pedestal is set to blind hole, be provided with involute splines on the hole wall of described blind hole, one end of described the second connecting body is provided with " protruding " font step manhole, be provided with involute splines on the hole wall in the hole of appearing on the stage of described step manhole, be provided with involute splines on the periphery of described locking and positioning post, described spring fitting is in blind hole, the lower end surface of described locking and positioning post is connected on spring, the inner hole wall in the leave from office hole of the step manhole of described the second connecting body is connected pedestal with the circle of the first connecting body outer wall is that Spielpassung is flexibly connected, involute splines on the hole wall in the involute splines on described locking and positioning post involute splines and blind hole hole wall and the hole of appearing on the stage is mutual meshing locking.
(3) beneficial effect
Compared with prior art, due to a small amount of component of the utility model design, the leave from office hole of designing the second connecting body is connected the folding means that pedestal adopts Spielpassung to be flexibly connected with the circle of the first connecting body, and the locking and positioning post is connected the technological means of the mutual meshing locking of employing between the hole of appearing on the stage of the blind hole of pedestal and the second connecting body with the circle of the first connecting body.Make that to the utlity model has component few, scientific structure design is reasonable, does not stay the advantage in gap and turns folding flexibly the good effect that locking and positioning is firm between the simple and assembly parts of assembling.
As the optimization of technique scheme and further perfect, the utility model also has following feature and advantage:
The circle of described the first connecting body connects on pedestal and is provided with outside thread, is provided with internal thread on the leave from office hole inner hole wall of the step manhole of described the second connecting body, and described internal thread and outside thread are that Spielpassung is rotationally connected.This structure can make first and second connecting body make close-fitting 360 degree rotary types and connect with folding, and make the connection non-loosening of first and second connecting body, has ensured the stability of product.
Described the second connecting body is set to the assemblying body of upper cover body and lower cover, the connecting groove that being connected with on described upper cover body and lower cover cooperatively interacts and convex tendon.This set, the pressing formed type of having abandoned prior art connects, and adopts the translational thrust formula to connect, its groove is connected the guide track that up and down lid translational thrust formula connects with convex tendon, the up and down lid is connected coordinate closely, between do not stay the gap; Be again the stiffening rib of the second connecting body, strengthened the intensity of connecting body and can not fracture easily.
The leave from office hole of described step manhole is divided into two semicircles, and one of them semicircle is arranged on the front end of lower cover.This set, the one, be being convenient in demoulding of Shooting Technique, the 2nd, be convenient to assembling.
The centre of described lower cover is provided with the screw hole post that is used for fixing the up and down lid.This screw hole post is slightly thick, and its effect is, and the one, be screwed the up and down lid by screw hole, the 2nd, be used for strengthening the intensity of the second connecting body.
The described circular bottom that connects blind hole in pedestal is provided with spring fixed column.This set is to be used for fixing spring, makes spring not produce displacement, is also simultaneously with the intensity of strengthening the first connecting body.
The described first connecting body the other end be connected the other end of connecting body and be respectively arranged with the socket that connects external piece, be provided with on described connecting head and be used for fixing the elongate recesses of blocking external piece.
The other end of described the first connecting body or the plug-in type socket that connects external piece is set.
Be respectively arranged with the contraposition sign with being connected on the face that connects pedestal on the face of described locking and positioning post.The setting of this sign is mainly when making Product Assembly, and its installation is settled at one go, thereby has improved the assembling work efficient of product.
Description of drawings
Fig. 1 is a kind of rotary type foldable positioning joint of the utility model STRUCTURE DECOMPOSITION schematic diagram;
Fig. 2 is the another kind of socket STRUCTURE DECOMPOSITION of the first connecting body schematic diagram of a kind of rotary type foldable positioning joint of the utility model;
In accompanying drawing shown in mark: 1, the first connecting body, 11, the circular pedestal that connects, 12, blind hole, 2, the second connecting body, 21, the step manhole, 211, the hole of appearing on the stage, 212, leave from office hole, 22 upper cover body, 23, lower cover, 24, screw hole post, 3, the locking and positioning post, 4, spring, 5, involute splines, 6, groove and convex tendon, 7, socket, 71, elongate recesses, 8, the plug-in type socket, 9, the contraposition sign.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
as depicted in figs. 1 and 2, a kind of rotary type foldable positioning joint of the present utility model, comprise the first link body 1, the second connecting body 2, locking and positioning post 3, spring 4, one end of described the first connecting body 1 is provided with a circular pedestal 11 that connects, the circular connection in pedestal 11 is set to blind hole 12, be provided with involute splines 5 on the hole wall of described blind hole 12, one end of described the second connecting body 2 is provided with " protruding " font step manhole 21, be provided with involute splines 5 on the hole wall in the hole 211 of appearing on the stage of described step manhole, be provided with involute splines 5 on the periphery of described locking and positioning post 3, described spring 4 is arranged in blind hole 12, the lower end surface of described locking and positioning post 3 is connected on spring 4, the inner hole wall in the leave from office hole 212 of the step manhole 21 of described the second connecting body 2 is connected pedestal 11 with the circle of the first connecting body 1 outer wall is that Spielpassung is flexibly connected, involute splines 5 on involute splines 5 on described locking and positioning post 3 involute spliness 5 and blind hole 12 hole walls and the hole wall in the hole 212 of appearing on the stage is mutual meshing locking.
The circle of the first connecting body 1 connects on pedestal 11 and is provided with outside thread, is provided with internal thread on leave from office hole 212 inner hole walls of the step manhole 21 of the second connecting body 2, and internal thread and outside thread are that Spielpassung is rotationally connected.Make first and second connecting body make close-fitting 360 degree rotary types and connect with folding, and make the connection non-loosening of first and second connecting body, ensured the stability of product.
With mould Dai Mu, with the theory of moulding Dai Gang under, present connecting body is all generally injection molded, therefore, for making in production process, conveniently stripped, so the second connecting body 2 is set to the assemblying body of upper cover body 22 and lower cover 23, the connecting groove that being connected with on upper cover body 22 and lower cover 23 cooperatively interacts and convex tendon 6.This set, the pressing formed type of having abandoned prior art connects, and adopts the translational thrust formula to connect, its groove is connected the guide track that up and down lid translational thrust formula connects with convex tendon, the up and down lid is connected coordinate closely, between do not stay the gap; Be again the stiffening rib of the second connecting body, strengthened the intensity of connecting body and can not fracture easily.
Described step is that the leave from office hole 212 of manhole is divided into two semicircles, and one of them semicircle is arranged on the front end of lower cover.This set, the one, be being convenient in demoulding of Shooting Technique, the 2nd, be convenient to assembling.
Be provided with the screw hole post 24 that is used for fixing upper and lower cover body in the centre of 23 lower covers.This screw hole post is slightly thick, and its effect is, and the one, be screwed the up and down lid by screw hole, the 2nd, be used for strengthening the intensity of the second connecting body.
The bottom that connects the interior blind hole 12 of pedestal 11 in circle is provided with the spring fixed column (not shown).This set is to be used for fixing spring, makes spring not produce displacement, is also simultaneously with the intensity of strengthening the first connecting body.
First connecting body 1 the other end be connected the other end of connecting body 2 and be respectively arranged with the socket 7 that connects external piece, be provided with on connecting head 7 and be used for fixing the elongate recesses 71 of blocking external piece.Also can be arranged at the other end of the first connecting body the plug-in type socket 8 of the connection external piece of another kind of shape.Can also be arranged to other forms of socket.
Be respectively arranged with contraposition sign 9 with being connected on the face that connects pedestal 11 on the face of locking and positioning post 3.
after the utility model assembles, its use principle is, during use, 211 places, hole of appearing on the stage at the second connecting body 2, locking and positioning post 3 is pressed down, make its disengaging hole 211 of appearing on the stage, at this moment, the first connecting body 1 and the second connecting body 2 are opened, in the process of opening, the outside thread that the internal thread in the leave from office hole 212 of the second connecting body 2 connects pedestal 11 along the circle of the first connecting body 1 can be made 360 degree and rotate, when being opened into the angle of required use, unclamp locking and positioning post 3, locking and positioning post 3 resets under the effect of spring, the involute splines 5 of the upper semisection of locking and positioning post 3 is engaged in the interior involute splines 5 in the hole 211 of appearing on the stage, lower semisection involute splines 5 is engaged in the interior involute splines 5 of blind hole 12 of circular connection pedestal 11, like this, locking and positioning post 3 is with the first connecting body 1 and the second 2 while of connecting body locking and positioning, under involute splines intermeshing, make the tightly interlock and can not being shifted of the first connecting body 1 and the second connecting body 2.When the needs gathering is folding, the same with aforesaid operations, locking and positioning post 3 is pressed down, make its disengaging hole 211 of appearing on the stage, at this moment, the first connecting body and the second connecting body are closed up to the overlapping folded state, unclamp locking and positioning post 3, locking and positioning post 3 resets under the effect of spring, the involute splines 5 of the upper semisection of locking and positioning post 3 is engaged in the interior involute splines 5 in the hole 211 of appearing on the stage, lower semisection involute splines 5 is engaged in the interior involute splines 5 of blind hole 12 of circular connection pedestal 11, so just makes the first connecting body 1 and the second connecting body 2 be locked at folded state.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. rotary type foldable positioning joint, comprise the first link body (1), the second connecting body (2), locking and positioning post (3), spring (4), it is characterized in that, one end of described the first connecting body (1) is provided with a circular pedestal (11) that connects, the circular connection in pedestal (11) is set to blind hole (12), be provided with involute splines (5) on the hole wall of described blind hole (12), one end of described the second connecting body (2) is provided with " protruding " font step manhole (21), be provided with involute splines (5) on the hole wall in the hole of appearing on the stage (211) of described step manhole (21), be provided with involute splines (5) on the periphery of described locking and positioning post (3), described spring (4) is arranged in blind hole (12), the lower end surface of described locking and positioning post (3) is connected on spring (4), the inner hole wall in the leave from office hole (212) of the step manhole (21) of described the second connecting body (2) is connected pedestal (11) with the circle of the first connecting body (1) outer wall is that Spielpassung is flexibly connected, involute splines (5) on involute splines (5) on described locking and positioning post (3) involute splines (5) and blind hole (12) hole wall and the hole wall of the hole of appearing on the stage (211) is mutual meshing locking.
2. a kind of rotary type foldable positioning joint as claimed in claim 1, it is characterized in that, be provided with outside thread on the circle connection pedestal (11) of described the first connecting body (1), be provided with internal thread on leave from office hole (212) inner hole wall of the step manhole (21) of described the second connecting body (2), described internal thread and outside thread are that Spielpassung is rotationally connected.
3. a kind of rotary type foldable positioning joint as claimed in claim 1, it is characterized in that, described the second connecting body (2) is set to the assemblying body of upper cover body (22) and lower cover (23), the connecting groove that being connected with on described upper cover body (22) and lower cover (23) cooperatively interacts and convex tendon (6), the leave from office hole of described step manhole is divided into two semicircles, and one of them semicircle is arranged on the front end of lower cover.
4. a kind of rotary type foldable positioning joint as claimed in claim 3, is characterized in that, the centre of described lower cover (23) is provided with the screw hole post (24) that is used for fixing the up and down lid.
5. a kind of rotary type foldable positioning joint as claimed in claim 1, is characterized in that, the described circular bottom that connects the interior blind hole of pedestal (11) (12) is provided with spring fixed column.
6. a kind of rotary type foldable positioning joint as claimed in claim 1, it is characterized in that, described the first connecting body (1) the other end be connected the other end of connecting body (2) and be respectively arranged with the socket (7) that connects external piece, be provided with on described connecting head (7) and be used for fixing the elongate recesses (71) of blocking external piece.
7. a kind of rotary type foldable positioning joint as claimed in claim 1, is characterized in that, the other end of described the first connecting body (1) or the plug-in type socket (8) that connects external piece is set.
8. a kind of rotary type foldable positioning joint as claimed in claim 1, is characterized in that, is respectively arranged with contraposition sign (9) with being connected on the face that connects pedestal (11) on the face of described locking and positioning post (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712342 CN202946529U (en) | 2012-12-20 | 2012-12-20 | Rotary-type folding and positioning joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712342 CN202946529U (en) | 2012-12-20 | 2012-12-20 | Rotary-type folding and positioning joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946529U true CN202946529U (en) | 2013-05-22 |
Family
ID=48422234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712342 Expired - Lifetime CN202946529U (en) | 2012-12-20 | 2012-12-20 | Rotary-type folding and positioning joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429731A (en) * | 2015-04-16 | 2017-12-01 | 胡斯华纳有限公司 | For connecting the articulated mounting of at least one longitudinally extending object |
-
2012
- 2012-12-20 CN CN 201220712342 patent/CN202946529U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429731A (en) * | 2015-04-16 | 2017-12-01 | 胡斯华纳有限公司 | For connecting the articulated mounting of at least one longitudinally extending object |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |