CN212318526U - Joint assembly - Google Patents
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- CN212318526U CN212318526U CN202020591012.7U CN202020591012U CN212318526U CN 212318526 U CN212318526 U CN 212318526U CN 202020591012 U CN202020591012 U CN 202020591012U CN 212318526 U CN212318526 U CN 212318526U
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Abstract
The utility model discloses a loose joint assembly body, including ball seat and bulb, the ball seat includes the ball seat body, is equipped with the bulb chamber on this ball seat body, this bulb intracavity be equipped with rather than the adaptation the bulb, the bar breach has been seted up on the ball seat body, the bar breach extends the opening in bulb chamber, the bulb chamber corresponds the ball seat body is equipped with the locking mechanical system of embracing outward, should embrace locking mechanical system and embrace tightly from the outside the bulb chamber corresponds during the ball seat body, the bar breach allows its both sides ball seat body part is inwards warp with roof pressure and locking the bulb. The utility model has the advantages that: the ball seat body has certain deformability, so that the ball head can be conveniently placed and adjusted to a proper angle at will, and then the ball head is locked through the encircling locking mechanism, and the ball seat is simple and reliable in structure.
Description
Technical Field
The utility model belongs to the technical field of the swing joint spare, concretely relates to loose joint assembly body.
Background
The universal joint is a mechanism for realizing variable-angle connection in space, is similar to a joint, is commonly provided with a cross universal joint, a spherical hinge mechanism and the like, and is widely applied to various fields of industry, traffic, medical treatment and the like. In general, a universal joint changes with the movement of a member connected with the universal joint, and the function of freely changing angles is realized. In some cases it may be desirable to have a locking function to fix the angle so that the position of the member to which it is attached is fixed. When the cross universal joint is used, the two cross universal joints with the vertical motion planes are connected in series, or the two ends of the cross universal joint are respectively and rotatably connected with corresponding components, so that the angle transformation in the space is realized. Patent document CN206527709U discloses an auxiliary fixture for variable-angle installation, which comprises a driving part, a driven part and an adjusting device, wherein the driving part and the driven part are connected through a cross universal joint, and the adjusting device is used for locking the angle between the driving part and the driven part. The spherical hinge mechanism realizes angle change in space through the matching of the spherical shell and the ball head. Patent document CN105715667A discloses a ball joint quick locking device, in which a ball joint seat is connected with a sleeve, a pressing block and a pushing device are arranged in the sleeve, and the pushing device pushes the pressing block to press a ball head to realize locking. However, the above-mentioned device has the problems of complex structure and unstable angle locking, and the above-mentioned structure cannot meet the requirements for the situation that the angle of the universal joint needs to be stably locked for a long time after being adjusted.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an articulated assembly with simple structure, convenient use and firm locking. The technical scheme is as follows:
a movable joint assembly body comprises a ball seat and a ball head, the ball seat comprises a ball seat body, a ball head cavity is arranged on the ball seat body, the ball head cavity is internally provided with the ball head matched with the ball head cavity, the key is that,
the ball seat body is provided with a strip-shaped gap, and the strip-shaped gap extends out of the opening of the ball head cavity;
and when the ball seat body corresponding to the ball head cavity is tightly held from the outer side by the surrounding locking mechanism, the strip-shaped notch allows the ball seat body parts on two sides of the strip-shaped notch to deform inwards so as to press and lock the ball head.
By adopting the design, the ball seat body has certain deformability, so that the ball head can be conveniently placed and randomly adjusted to a proper angle, and then the ball head is locked by the encircling locking mechanism, and the ball seat is simple and reliable in structure.
As a preferred technical scheme, the ball seat comprises a base and a toothed part, wherein the base is provided with an inwards concave supporting spherical surface, all the toothed parts are arranged around the supporting spherical surface, fixed ends of the toothed part are respectively connected with the edge of the supporting spherical surface, free ends of the toothed part extend out along the direction of the supporting spherical surface, and the inner side surface of the toothed part is a spherical curved surface;
the strip-shaped gap is formed by a gap between every two adjacent tooth-shaped parts;
the cavity defined by all the tooth parts and the base forms the ball head cavity, the supporting spherical surface and all the spherical curved surfaces form a ball head cavity surface matched with the ball head, and the free ends of all the tooth parts define an opening of the ball head cavity.
By adopting the design, the ball head locking device has the advantages that the base supports the ball head, the free end of the tooth-shaped part has the capability of deforming outwards or inwards so as to unlock and lock the ball head with the surrounding locking mechanism, and in a locking state, a ball head cavity surface formed by the spherical curved surface and the supporting spherical surface is completely matched with the ball head.
Preferably, the opening of the ball head cavity is reduced.
By adopting the design, the ball head is prevented from sliding out in the unlocking state, and the ball head is stably wrapped.
Preferably, the edge of the spherical curved surface corresponding to the free end of the tooth-shaped portion is connected with a chamfer inclined surface.
By adopting the design, the ball head can be conveniently arranged.
As a preferred technical scheme, a jacking protrusion is arranged between the inner side surface of the tooth-shaped part and the outer spherical surface of the ball head;
the jacking protrusion is fixedly arranged on the inner side surface of the tooth-shaped part, and the outer spherical surface of the ball head deforms when being jacked by the jacking protrusion;
or the jacking protrusion is fixedly arranged on the outer spherical surface, and the inner side surface of the tooth-shaped part deforms when being jacked by the jacking protrusion.
By adopting the design, when in a locking state, the jacking bulge is pressed into the surface opposite to the jacking bulge, so that the friction force between the ball head and the ball seat is further enhanced, the ball head is prevented from rotating, and the stability is improved.
Preferably, the pressing protrusion is in the shape of a column, a cone, a truncated cone, or a hemisphere.
By adopting the design, the forming and manufacturing are convenient.
According to the preferable technical scheme, the jacking protrusion comprises two semicircular plates which are arranged in a crossed mode and are integrally formed, the diameter edges of the semicircular plates are fixedly connected with the inner side face of the tooth-shaped portion or the outer spherical surface of the ball head, the arc edges of the semicircular plates are located on the same hemispherical surface, and the gaps between the semicircular plates form abdicating depressions.
By adopting the design, the whole hemispherical shape is smooth, the ball head is convenient to rotate in the unlocking state, the pressing contact surface is prevented from rotating in the locking state, the abdicating recess is formed, and the deformed ball head or ball seat is convenient to enter the recess, so that the friction force between the jacking protrusion and the ball head or ball seat is enhanced.
As a preferred technical scheme, the top pressing bulge is integrally formed on the outer spherical surface of the ball head corresponding to the tooth-shaped part;
the hardness of at least the part of the tooth-shaped part close to the inner side surface of the pressing protrusion is smaller than that of the pressing protrusion, and when the tooth-shaped part presses the ball head, the tooth-shaped part deforms to enable the pressing protrusion to be pressed into the inner side surface of the tooth-shaped part.
By adopting the design, when the elastic deformation occurs, the friction force between the ball head and the ball seat is large, and the locking is firm; after unlocking, the elastic deformation is recovered or partially recovered, and when the ball head rotates to another angle, the jacking bulge rotates to a new position and can be locked again.
As a preferred technical scheme, the inner side surface of the tooth-shaped part is provided with the jacking protrusion, and the jacking protrusion is conical;
the hardness of at least the part of the ball head close to the outer surface of the ball head is smaller than that of the jacking bulge, and when the tooth-shaped part presses the ball head, the jacking bulge is pressed into or penetrated into the outer surface of the ball head.
By adopting the design, the conical jacking bulge can enter the outer surface of the ball head during locking, so that the locking is stable.
As a preferred technical scheme, the encircling locking mechanism comprises locking nuts, the outer side surfaces of all the tooth-shaped parts are positioned on the same cylindrical surface and are provided with external threads, and the locking nuts are sleeved on the outer side surfaces of all the tooth-shaped parts;
a first connecting rod is arranged on the base, extends back to the ball head cavity, and is provided with an inner screw hole at the free end;
and a second connecting rod is arranged on the ball head and extends out of the opening of the ball head cavity.
By adopting the design, the locking structure is simple, and the first connecting rod and the second connecting rod are convenient for the universal joint to be connected with the component.
Compared with the prior art, the beneficial effects of the utility model are that: the ball seat body has certain deformability, so that the ball head can be conveniently placed and adjusted to a proper angle at will, and then the ball head is locked through the encircling locking mechanism, and the ball seat is simple and reliable in structure.
Drawings
FIG. 1 is a schematic diagram of a first perspective view of a first embodiment;
FIG. 2 is a schematic diagram illustrating a second view angle according to the first embodiment;
FIG. 3 is a schematic structural diagram of a base according to the first embodiment;
FIG. 4 is an exploded view of the first embodiment;
FIG. 5 is an enlarged view of the portion m1 in FIG. 4;
FIG. 6 is a schematic cross-sectional view illustrating a first embodiment of the present invention;
FIG. 7 is an enlarged view of the portion m2 in FIG. 6;
FIG. 8 is an exploded view of the second embodiment;
FIG. 9 is a schematic structural diagram of a base according to a second embodiment;
FIG. 10 is a schematic cross-sectional view illustrating a second embodiment of the present invention;
fig. 11 is an enlarged view of a portion m3 in fig. 10.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example one
As shown in figures 1-4, the articulated assembly comprises a ball seat 1 and a ball head 2, wherein the ball seat 1 comprises a ball seat body, a ball head cavity 3 is arranged on the ball seat body, and the ball head 2 matched with the ball head cavity 3 is arranged in the ball head cavity 3. The ball seat is characterized in that a strip-shaped gap 4 is formed in the ball seat body, the strip-shaped gap 4 extends out of an opening of the ball head cavity 3, an encircling locking mechanism 6 is arranged outside the ball seat body corresponding to the ball head cavity 3, and when the encircling locking mechanism 6 tightly embraces the ball seat body corresponding to the ball head cavity 3 from the outer side, the strip-shaped gap 4 allows the ball seat body parts on the two sides to deform inwards to press and lock the ball head 2.
Set up the purpose of bar breach 4 lies in: the existence of strip breach 4 has reduced the intensity of the ball seat body of its position to form the space of stepping down, make the ball seat body on its both sides receive inward thrust in the outside or when the inboard receives outside thrust, have the activity degree that takes place a certain degree of leanin or extroversion, skilled person in the art realizes, strip breach 4 can be the slot-shaped of seting up on the inner wall of bulb chamber 3, also can be the gap that runs through the wall of bulb chamber 3.
As shown in fig. 3, specifically, the ball seat 1 includes a base 1a and tooth-shaped portions 1c, an inwardly concave supporting spherical surface 1b is provided on the base 1a, all the tooth-shaped portions 1c are disposed around the supporting spherical surface 1b, fixed ends of the tooth-shaped portions 1c are respectively connected with edges of the supporting spherical surface 1b, free ends of the tooth-shaped portions 1c extend along the supporting spherical surface, and an inner side surface of the tooth-shaped portions 1c is a spherical curved surface 1 d. The gap between two adjacent tooth parts 1c forms the strip-shaped gap 4.
The cavity enclosed by all the tooth-shaped parts 1c and the base 1a forms the ball head cavity 3, the supporting spherical surface 1b and all the spherical curved surfaces 1d form a ball head cavity surface matched with the ball head 2, and the free ends of all the tooth-shaped parts 1c enclose an opening of the ball head cavity 3.
In order to prevent the ball head 2 from falling off, the opening of the ball head cavity 3 is reduced. The necking is formed by extending all the spherical curved surfaces 1d along the surface of the ball head 2 to exceed the maximum diameter circle of the ball head 2, namely, the diameter of the circle formed by the opening of the ball head cavity 3 is smaller than that of the ball head 2. As shown in fig. 3, the dotted line indicates a position parallel to the opening of the ball head chamber 3 and passing through the spherical center line of the ball head chamber 3.
The surrounding locking mechanism 6 comprises locking nuts, the outer side surfaces of all the tooth-shaped portions 1c are located on the same cylindrical surface and are provided with external threads (not shown in the figure), and the locking nuts are sleeved on the outer side surfaces of all the tooth-shaped portions 1 c.
The base 1a is provided with a first connecting rod 7, the first connecting rod 7 extends back to the ball head cavity 3, and the free end of the first connecting rod 7 is provided with an inner screw hole 7 a. A second connecting rod 8 is arranged on the ball head 2, and the second connecting rod 8 extends out of the opening of the ball head cavity 3. The first connecting rod 7 and the second connecting rod 8 are respectively used for connecting two components.
The ball seat 1 and the ball head 2 are assembled in such a way that:
during installation, the locking nut is rotated to the fixed end of the toothed part 1c, at the moment, the free end of the toothed part 1c has a certain degree of outward-inclining mobility when stressed, and the ball head 2 is plugged into the ball head cavity 3 from the opening of the ball head cavity. After the joint assembly body is connected with the component, the second connecting rod 8 is adjusted to a proper angle according to needs, and then the locking nut is rotated to the free end of the tooth-shaped part 1c, namely the ball head 2 is locked, and at the moment, the angle between the first connecting rod 7 and the second connecting rod 8 is locked. When the angle needs to be changed, the locking nut is rotated to the fixed end of the toothed part 1c again, so that the free end of the toothed part 1c is free from constraint, the ball head 2 is adjusted to the second connecting rod 8 to a desired angle, and the locking nut is rotated again for locking.
The outer diameter of the ball 2 may be slightly larger (e.g., 10-20 μm larger) than the inner diameter of the ball cavity 3, so that the ball 2 is firmly locked in the locked state.
In order to facilitate the ball 2 to enter the ball cavity 3, the edge of the spherical curved surface 1d corresponding to the free end of the tooth-shaped part 1c is connected with a chamfer inclined surface 1 e.
In order to further improve the stability of the movable joint assembly body in the locking state, a jacking protrusion 5 is arranged between the inner side surface of the toothed part 1c and the outer spherical surface of the ball head 2. In this embodiment, the pressing protrusion 5 is fixedly disposed on the outer spherical surface, and the inner side surface of the tooth-shaped portion 1c deforms when pressed by the pressing protrusion 5. The top pressing bulge 5 is columnar, conical, round table-shaped or hemispherical, the surface of the top pressing bulge 5 is a complete profile, and the surface can also be provided with a yielding depression 5 a.
As shown in fig. 4 and 5, the pressing protrusion 5 is integrally formed on the outer spherical surface of the ball head 2 corresponding to the tooth-shaped portion 1 c. The top pressing bulge 5 comprises two semicircular plates which are arranged in a crossed mode and are integrally formed, the diameter edges of the semicircular plates are fixedly connected with the inner side face of the tooth-shaped portion 1c or the outer spherical surface of the ball head 2, the arc edges of the semicircular plates are located on the same hemispherical surface, and the gaps between the semicircular plates form the abdicating recess 5 a. And a chamfer is arranged at the arc-shaped edge of the semicircular plate.
The hardness of at least the part of the tooth-shaped part 1c close to the inner side surface thereof is smaller than that of the jacking protrusion 5, and when the tooth-shaped part 1c presses the ball head 2, the tooth-shaped part 1c is elastically deformed so that the jacking protrusion 5 is pressed into the inner side surface of the tooth-shaped part 1 c. For example, the tooth-shaped portion 1c may be made of a polymer material, and the ball head 2 and the pressing protrusion 5 may be made of a metal material.
As shown in fig. 5, the whole shape of the pressing protrusion 5 is hemispherical, so that the ball head 2 can be adjusted to rotate freely in the ball head cavity 3 in the unlocking state. The surface is provided with a relief recess 5a, which aims at that when the jacking protrusion 5 is pressed into the tooth-shaped part 1c, the tooth-shaped part 1c is deformed so as to be partially pressed into the relief recess 5a, and the semicircular plate is clamped between the deformed parts on the inner surface of the tooth-shaped part 1c, as shown in fig. 6 and 7, so that the ball head 2 is better prevented from rotating in a locking state, and the stability is kept. The arc-shaped edge of the semicircular plate is provided with a chamfer, so that the tooth-shaped part 1c is further convenient to deform and is extruded into the abdicating recess 5 a.
The joint assembly can adjust the joint angle twice or more.
Example two
The difference from the first embodiment is that, as shown in fig. 8 and 9, the pressing protrusion 5 is fixedly disposed on the inner side surface of the tooth-shaped portion 1c, and the outer surface of the ball head 2 deforms when pressed by the pressing protrusion 5. In this embodiment, the pressing protrusion 5 is disposed on the inner side surface of the tooth-shaped portion 1c, and the pressing protrusion 5 is conical. At least the portion of the ball head 2 near the outer surface has a hardness lower than that of the pressing projection 5, and when the toothed portion 1c is pressed against the ball head 2, the pressing projection 5 presses or penetrates into the outer surface of the ball head 2, as shown in fig. 10 and 11.
The design ensures that the holding effect of the ball seat 1 on the ball head 2 is better and more stable in the locking state. Further, a pressure sensitive adhesive may be filled between the inner cavity surface of the ball cavity 3 and the outer spherical surface of the ball 2. The articulated assembly of this embodiment is adapted for single use, as it is not angularly displaceable after it has been adjusted to the correct angle and locked.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (10)
1. The utility model provides a loose joint assembly body, includes ball seat (1) and bulb (2), ball seat (1) includes the ball seat body, is equipped with bulb chamber (3) on this ball seat body, is equipped with in this bulb chamber (3) rather than the adaptation bulb (2), its characterized in that:
a strip-shaped gap (4) is formed in the ball seat body, and the strip-shaped gap (4) extends out of an opening of the ball head cavity (3);
an encircling locking mechanism (6) is arranged outside the ball seat body corresponding to the ball head cavity (3), and when the encircling locking mechanism (6) clasps the ball seat body corresponding to the ball head cavity (3) from the outer side, the strip-shaped gap (4) allows the ball seat body parts on the two sides of the strip-shaped gap to deform inwards so as to press and lock the ball head (2).
2. An articulated assembly as defined in claim 1 wherein: the ball seat (1) comprises a base (1a) and tooth-shaped parts (1c), an inwards concave supporting spherical surface (1b) is arranged on the base (1a), all the tooth-shaped parts (1c) are arranged around the supporting spherical surface (1b), the fixed ends of the tooth-shaped parts (1c) are respectively connected with the edge of the supporting spherical surface (1b), the free ends of the tooth-shaped parts (1c) extend out along the direction of the supporting spherical surface, and the inner side surfaces of the tooth-shaped parts (1c) are spherical curved surfaces (1 d);
gaps between two adjacent tooth parts (1c) form the strip-shaped gaps (4);
the cavity defined by all the tooth-shaped parts (1c) and the base (1a) forms the ball head cavity (3), the supporting spherical surface (1b) and all the spherical curved surfaces (1d) form a ball head cavity surface matched with the ball head (2), and the free ends of all the tooth-shaped parts (1c) define an opening of the ball head cavity (3).
3. An articulated assembly as defined in claim 2 wherein: the opening of the ball head cavity (3) is reduced.
4. An articulating assembly as claimed in claim 3 wherein: the edge of the spherical curved surface (1d) corresponding to the free end of the tooth-shaped part (1c) is connected with a chamfer inclined surface (1 e).
5. An articulated assembly as claimed in any of claims 2 to 4, wherein: a jacking bulge (5) is arranged between the inner side surface of the toothed part (1c) and the outer spherical surface of the ball head (2);
the jacking protrusion (5) is fixedly arranged on the inner side surface of the toothed part (1c), and the outer spherical surface of the ball head (2) deforms when being jacked by the jacking protrusion (5);
or the jacking bulge (5) is fixedly arranged on the outer spherical surface, and the inner side surface of the toothed part (1c) deforms when being jacked by the jacking bulge (5).
6. An articulating assembly as claimed in claim 5, wherein: the top pressing bulge (5) is columnar, conical, round table or hemispherical.
7. An articulating assembly as claimed in claim 6, wherein: the jacking bulge (5) comprises two semicircular plates, two semicircular plates are arranged in a crossed mode and are integrally formed, the diameter edges of the semicircular plates are located on the same hemispherical surface, two arc edges of the semicircular plates are located on the same hemispherical surface, and a recess (5a) is formed in the gap between the semicircular plates.
8. An articulating assembly as claimed in claim 6, wherein: the pressing bulge (5) is integrally formed on the outer spherical surface of the ball head (2) corresponding to the toothed part (1 c);
the hardness of at least the part of the tooth-shaped part (1c) close to the inner side surface is smaller than that of the jacking protrusion (5), and when the tooth-shaped part (1c) presses the ball head (2), the tooth-shaped part (1c) deforms to enable the jacking protrusion (5) to be pressed into the inner side surface of the tooth-shaped part (1 c).
9. An articulating assembly as claimed in claim 6, wherein: the inner side surface of the tooth-shaped part (1c) is provided with the jacking protrusion (5), and the jacking protrusion (5) is conical;
the hardness of at least the part of the ball head (2) close to the outer surface of the ball head is smaller than that of the jacking bulge (5), and when the toothed part (1c) presses the ball head (2), the jacking bulge (5) is pressed into or penetrated into the outer surface of the ball head (2).
10. An articulated assembly as claimed in any of claims 2 to 4, wherein: the encircling locking mechanism (6) comprises locking nuts, the outer side surfaces of all the toothed parts (1c) are positioned on the same cylindrical surface and are provided with external threads, and the locking nuts are sleeved on the outer side surfaces of all the toothed parts (1 c);
a first connecting rod (7) is arranged on the base (1a), the first connecting rod (7) extends back to the ball head cavity (3), and an inner threaded hole (7a) is formed in the free end of the first connecting rod (7);
and a second connecting rod (8) is arranged on the ball head (2), and the second connecting rod (8) extends out of the opening of the ball head cavity (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020201396026 | 2020-01-21 | ||
| CN202020139602 | 2020-01-21 |
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| Publication Number | Publication Date |
|---|---|
| CN212318526U true CN212318526U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020591012.7U Active CN212318526U (en) | 2020-01-21 | 2020-04-20 | Joint assembly |
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| CN (1) | CN212318526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365361A (en) * | 2020-01-21 | 2020-07-03 | 重庆中泽拓邦生物技术有限公司 | Loose joint assembly body |
| CN114017624A (en) * | 2021-11-24 | 2022-02-08 | 延边大学 | Adjustable mounting seat type projector for literal arts teaching |
-
2020
- 2020-04-20 CN CN202020591012.7U patent/CN212318526U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365361A (en) * | 2020-01-21 | 2020-07-03 | 重庆中泽拓邦生物技术有限公司 | Loose joint assembly body |
| CN111365361B (en) * | 2020-01-21 | 2024-06-14 | 储瑞亮 | Movable joint assembly |
| CN114017624A (en) * | 2021-11-24 | 2022-02-08 | 延边大学 | Adjustable mounting seat type projector for literal arts teaching |
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