CN102913604A - Connection joint for ensuring synchronous movement of rod pieces - Google Patents
Connection joint for ensuring synchronous movement of rod pieces Download PDFInfo
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- CN102913604A CN102913604A CN2012103972735A CN201210397273A CN102913604A CN 102913604 A CN102913604 A CN 102913604A CN 2012103972735 A CN2012103972735 A CN 2012103972735A CN 201210397273 A CN201210397273 A CN 201210397273A CN 102913604 A CN102913604 A CN 102913604A
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- shaped plate
- rod member
- node
- synchronized
- rotating shaft
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Abstract
The invention discloses a connection joint for ensuring the synchronous movement of rod pieces. The connection joint comprises a base, N L-shaped plates, N T-shaped rotating shafts and 2N conical gears, wherein N is an integer more than 2, the N L-shaped plates are arranged on one surface of the base in a central symmetrical manner, each T-shaped rotating shaft is arranged between the two adjacent L-shaped plates, the two ends of each T-shaped rotating shaft respectively penetrate through the adjacent L-shaped plates so as to be connected with one conical gear, and each L-shaped plate is meshed with the two adjacent conical gears. Each L-shaped plate is formed by connecting two same straight plates, and a break angle is arranged between the two straight plates. According to the connection joint, the cost is low, the condition that the rod pieces can freely rotate for 180 degrees is ensured, and the rod pieces to be connected are in accurate synchronous movement.
Description
Technical field
The present invention relates to mechanism and deployable structure, relate in particular to a kind of connected node of guaranteeing that rod member is synchronized with the movement.
Background technique
In the last thirty years, the fast development of China's Space Science and Technology has promoted the application of deployable structure in fields such as Aero-Space, military engineering, civil engineerings.As a kind of new space structures, deployable structure has mechanism motion characteristic, can cater to the actual demand such as time, space of environment of living in, the geometric configuration of change structure effectively, and each rod member is in unstress state substantially in the movement process.For example, deployable structure is folded into compact rounding state usually, and when needs used, deployable structure can drive progressively by the external world and launch, and is converted to stable working state.Therefore, deployable structure have the transportation of being convenient to and storage, reusable, the duration short, the advantage such as handsome in appearance.
In the design of mechanism or deployable structure, design of node is extremely important, and joint form has determined the expansion-folding property of deployable structure.Be different from general structure node, the node in the deployable structure need to allow institute's connecting rod that large displacement and rotation occur, and avoids rod member to produce distortion in expansion process, produce friction with node; In addition, under the arrangement works state, node need to have enough strength and stiffness, to bear various load actions.According to the relative movement mode of institute's connecting rod, the connected node in the deployable structure comprises that mainly translation is secondary, reverse the types such as pair, revolute pair, and wherein the revolute pair node is the most commonly used.Connect many rod members because the node in the deployable structure is general, need to adopt many revolute pair to be connected respectively each bar, and the axis of appended each revolute pair of node is in the same plane, causes that thus node connects each rod member and moves asynchronous.Existing node mainly relies on the geometric constraint of structure itself that rod member is synchronized with the movement, but when each rod member center and institute's connected node are in same plane, can produce the Kinematics singularity phenomenon, makes the geometric constraint inefficacy.Therefore, design a kind of novel connected node for the service behaviour that improves deployable structure with Security, guarantee that node is connected each rod member in the deployable structure and be synchronized with the movement and will have great importance.
Summary of the invention
Technical problem: the object of the invention is to overcome deficiency of the prior art, a kind of connected node that rod member is synchronized with the movement of guaranteeing that is applied in the deployable structure is provided, and this connected node can guarantee effectively that each rod member that node connects remains synchronous in movement process.
Technological scheme: the connected node of guaranteeing that rod member is synchronized with the movement of the present invention, comprise base, a N L shaped plate, a N T shape rotating shaft and 2N angular wheel, wherein N is the integer greater than 2, N L shaped plate is centrosymmetric and is arranged on the one side of base, the rotating shaft of T shape is arranged between the two adjacent L shaped plates, T shape rotating shaft two ends are connected with an angular wheel after passing respectively adjacent L shaped plate, and two angular wheels of each L shaped plate institute adjacency intermesh.
Among the present invention, L shaped plate is formed by connecting by two blocks of identical straight plates, one knuckle α is arranged between two blocks of straight plates, be respectively arranged with an axis hole on two blocks of straight plates, two axis holes are take the bisectrix of knuckle α as axisymmetric, the rotating shaft of T shape comprises rotatingshaft and is vertically connected on connecting rod on the rotatingshaft mid point, and the two ends of rotatingshaft are connected with an angular wheel after passing respectively axis hole on the adjacent L shaped plate.
Among the present invention, the knuckle α between two blocks of straight plates of L shaped plate=2 π/N.
Among the present invention, be provided with bearing in the axis hole, bearing is fixedly connected on the rotatingshaft.
Among the present invention, be provided with breach on the base 1, the shape of breach, position want the shape of connecting rod and pivotal position to be complementary with connecting rod respectively, freely rotate to guarantee institute's connecting rod moving axis 180 degree that can rotate.
Among the present invention, be provided with the screw thread that is connected for rod member on the connecting rod.
Beneficial effect: compared with prior art, the present invention has the following advantages:
(1) existing connected node mainly adopts and many revolute pair is connected respectively different rod members, and rely on the geometric constraint of structure self to force rod member to be synchronized with the movement, but when rod member center and institute's connected node are positioned at same plane, have the Kinematics singularity point, each rod member no longer is synchronized with the movement; This connected node is according to the mechanical drive principle of angular wheel, so that the rotatingshaft of engagement rotates synchronously in twos, thereby has guaranteed the rod member precise synchronization motion that each rotatingshaft mid point place connects.
(2) this connected node is provided with rotary bearing dexterously between rotatingshaft and node main body, and on the node base reserving hole, guarantee that node institute connecting rod moving axis 180 degree that can rotate freely rotate without friction, smoothly intactly finish expansion-fold overall process; And node institute connecting rod can compactly connect under folded state, has improved significantly the rate of taking in of deployable structure.
(3) preparation process of the present invention is simple and cost is low, and is handsome in appearance, can produce by batch; Connecting rod one end of the T shape rotating shaft of this node has been preset screw thread, is convenient to be connected with rod member.
Description of drawings
Fig. 1 a-Fig. 1 c is respectively the overlooking of connected node that the present invention guarantees that rod member is synchronized with the movement, side-looking, schematic three dimensional views.
Fig. 2 is the critical piece decomposing schematic representation that the present invention guarantees the connected node that rod member is synchronized with the movement.
Fig. 3 a-Fig. 3 f is the structure of node of the present invention when being applied to the connect four rod members process schematic representation that is synchronized with the movement, wherein Fig. 3 a, Fig. 3 f be respectively rod member downwards, the folded state when upwards drawing in fully, Fig. 3 b is synchronously downward motion states of four rod members, Fig. 3 c, Fig. 3 d are the central point of the four rod members threshold state during close to same plane, and Fig. 3 e is four motion states that rod member makes progress synchronously.
Fig. 4 a, Fig. 4 b are respectively the present invention's overlooking and schematic three dimensional views for the connected node agent structure that connects three rod members.
Fig. 5 a, Fig. 5 b are respectively the present invention's overlooking and schematic three dimensional views for the connected node agent structure that connects five rod members.
Wherein: 1 is the connected node base, and 2 is L shaped plate, and 3 is bearing, and 4 is the rotating shaft of T shape, and 5 is angular wheel, and 11 is the breach that arranges on the node base, and 21 is axis hole set on the straight plate, and 41 is rotatingshaft, and 42 is connecting rod.
Embodiment
Below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described further:
Fig. 1, Fig. 2 are respectively guarantee the general structure schematic representation of the connected node that rod member is synchronized with the movement and the schematic representation of chief component of the present invention.
The connected node of guaranteeing that rod member is synchronized with the movement of the present invention, comprise base 1, a N L shaped plate 2, a N T shape rotating shaft 4 and 2N angular wheel 5, wherein N is the integer greater than 2, N L shaped plate 2 is centrosymmetric and is arranged on the one side of base 1, T shape rotating shaft 4 is arranged between the two adjacent L shaped plates 2, T shape rotating shaft 4 two ends are connected with an angular wheel 5 after passing respectively adjacent L shaped plate 2, and two angular wheels 5 of 2 adjacency of each L shaped plate intermesh.
Among the present invention, L shaped plate 2 is formed by connecting by the straight plate of two isometric uniform thickness, one knuckle α is arranged between two blocks of straight plates, be respectively arranged with an axis hole 21 on two blocks of straight plates, two axis holes 21 are take the bisectrix of knuckle α as axisymmetric, T shape rotating shaft 4 comprises rotatingshaft 41 and the connecting rod 42 that is vertically connected on rotatingshaft 41 mid points, the axis hole 21 that the two ends of rotatingshaft 41 are passed respectively on the adjacent L shaped plate 2 is connected with an angular wheel 5 afterwards, Placement is coaxial being fixedly connected with, and can adopt the conventional locking methods such as screw, bolt or rivet.
Among the present invention, the knuckle α between two blocks of straight plates of L shaped plate 2=2 π/N.
Among the present invention, be provided with bearing 3 in the axis hole 21 on the L shaped plate 2, bearing 3 is fixedly connected on the rotatingshaft 41, and to guarantee T shape rotating shaft 4 relative L shaped plates 2 as without frictional rotation, the internal diameter of its middle (center) bearing 3 is identical with the external diameter of the rotatingshaft 41 of T shape rotating shaft 4.
Among the present invention, connecting rod can freely rotate around T shape rotating shaft 180 degree in order to guarantee, the complete expansion of successfully finishing rod member-folding movement process, be provided with breach 11 at node base 1, the shape of breach 11, position are complementary with shape and the pivotal position of connecting rod 42 connecting rod of wanting respectively.
Among the present invention, be provided with the screw thread that is connected for rod member on the connecting rod 42, be convenient to be connected with rod member.
Fig. 3 a---Fig. 3 f is depicted as node of the present invention and is applied to connect four rod members, when being N=4, knuckle α=pi/2, the process that the is synchronized with the movement schematic representation of the structure that forms, wherein Fig. 3 a, Fig. 3 f be respectively four rod members downwards, the folded state when upwards drawing in fully, Fig. 3 b is synchronously downward motion states of four rod members, Fig. 3 c, Fig. 3 d are the central point of the four rod members threshold state during close to same plane, and Fig. 3 e is four motion states that rod member makes progress synchronously.
Below schematically the present invention and mode of execution thereof are described, this description does not have restricted, accompanying drawing 1---and shown in Fig. 3 also is one of embodiments of the present invention, and actual connected node is not limited to this.For example, node of the present invention can connect arbitrarily many rod members, can change according to actual needs the shape of node base, and adjusts the angle of articulation of angular wheel.Fig. 4, Figure 5 shows that when the present invention is respectively applied to connect three (N=3), five rod members (N=5) the main body base of connected node and L shaped plate schematic representation.Therefore, if others skilled in the art in the situation that does not break away from the invention aim, adopt mode of structure and the embodiment similar to this technological scheme, all should belong to protection scope of the present invention.
Because this connected node adopts angular wheel, so that the rotatingshaft of engagement rotates synchronously in twos, effectively guarantee the rod member precise synchronization motion that each rotatingshaft connects, therefore this category node can be applicable in the deployable structure, especially relates to by revolute pair, cuts the constraint system of crossing that hinge formula unit etc. consists of.
Claims (6)
1. connected node of guaranteeing that rod member is synchronized with the movement, it is characterized in that, this connected node comprises base (1), N L shaped plate (2), N T shape rotating shaft (4) and 2N angular wheel (5), wherein N is the integer greater than 2, a described N L shaped plate (2) is centrosymmetric and is arranged on the one side of base (1), described T shape rotating shaft (4) is arranged between the two adjacent L shaped plates (2), T shape rotating shaft (4) two ends are connected with an angular wheel (5) after passing respectively adjacent L shaped plate (2), and two angular wheels (5) of each L shaped plate (2) institute adjacency intermesh.
2. the connected node of guaranteeing that rod member is synchronized with the movement according to claim 1, it is characterized in that, described L shaped plate (2) is formed by connecting by two blocks of identical straight plates, between described two blocks of straight plates a knuckle α is arranged, be respectively arranged with an axis hole (21) on two blocks of straight plates, described two axis holes (21) are take the bisectrix of knuckle α as axisymmetric, described T shape rotating shaft (4) comprises rotatingshaft (41) and is vertically connected on connecting rod (42) on described rotatingshaft (41) mid point, and the two ends of rotatingshaft (41) are connected with an angular wheel (5) after passing respectively axis hole (21) on the adjacent L shaped plate (2).
3. the connected node of guaranteeing that rod member is synchronized with the movement according to claim 2 is characterized in that, the knuckle α between two blocks of straight plates of described L shaped plate (2)=2 π/N.
4. the connected node of guaranteeing that rod member is synchronized with the movement according to claim 1 and 2 is characterized in that, is provided with bearing (3) in the described axis hole (21), and described bearing (3) is fixedly connected on the rotatingshaft (41).
5. the connected node of guaranteeing that rod member is synchronized with the movement according to claim 1 and 2, it is characterized in that, be provided with breach (11) on the described base (1), the shape of described breach (11), position are complementary with shape and the pivotal position of connecting rod (42) connecting rod of wanting respectively.
6. the connected node of guaranteeing that rod member is synchronized with the movement according to claim 1 and 2 is characterized in that, described connecting rod is provided with the screw thread that is connected for rod member on (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210397273.5A CN102913604B (en) | 2012-10-18 | 2012-10-18 | Connection joint for ensuring synchronous movement of rod pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210397273.5A CN102913604B (en) | 2012-10-18 | 2012-10-18 | Connection joint for ensuring synchronous movement of rod pieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913604A true CN102913604A (en) | 2013-02-06 |
| CN102913604B CN102913604B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210397273.5A Expired - Fee Related CN102913604B (en) | 2012-10-18 | 2012-10-18 | Connection joint for ensuring synchronous movement of rod pieces |
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| Country | Link |
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| CN (1) | CN102913604B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755243A (en) * | 2019-09-10 | 2020-02-07 | 赛夫 | Head massage device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2883894A (en) * | 1955-03-31 | 1959-04-28 | Tsuchikawa Takeo | Gear rolling machine |
| WO1997022817A1 (en) * | 1995-12-15 | 1997-06-26 | Sikorsky Aircraft Corporation | Method for fabricating a split path transmission providing equal torque splitting |
| CN101963206A (en) * | 2010-10-19 | 2011-02-02 | 华南理工大学 | Regular polygon axial distribution-based micro speed reducer |
| CN102535647A (en) * | 2012-02-06 | 2012-07-04 | 东南大学 | Eccentric node of unfoldable structure of pantograph |
| CN102633075A (en) * | 2012-04-18 | 2012-08-15 | 南京华德仓储设备制造有限公司 | Lifting mechanism for shuttling tool |
-
2012
- 2012-10-18 CN CN201210397273.5A patent/CN102913604B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2883894A (en) * | 1955-03-31 | 1959-04-28 | Tsuchikawa Takeo | Gear rolling machine |
| WO1997022817A1 (en) * | 1995-12-15 | 1997-06-26 | Sikorsky Aircraft Corporation | Method for fabricating a split path transmission providing equal torque splitting |
| CN101963206A (en) * | 2010-10-19 | 2011-02-02 | 华南理工大学 | Regular polygon axial distribution-based micro speed reducer |
| CN102535647A (en) * | 2012-02-06 | 2012-07-04 | 东南大学 | Eccentric node of unfoldable structure of pantograph |
| CN102633075A (en) * | 2012-04-18 | 2012-08-15 | 南京华德仓储设备制造有限公司 | Lifting mechanism for shuttling tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755243A (en) * | 2019-09-10 | 2020-02-07 | 赛夫 | Head massage device |
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| Publication number | Publication date |
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| CN102913604B (en) | 2015-03-11 |
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Granted publication date: 20150311 Termination date: 20201018 |
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