Multi-joint ball hinge linkage locking universal support

Abstract

The utility model relates to the technical field of hardware tools, in particular to a multi-joint ball hinge linkage locking universal support which comprises a plurality of sub-joint systems and a plurality of connecting cylinders. The sub-joint system comprises an upper ball head rod, a lower ball head rod and a connecting structure; one end of the connecting structure is hinged with the ball head part of the upper ball head rod, and the other end is hinged with the ball head part of the lower ball head rod; one end of the connecting cylinder is fixedly connected with the rod part of the upper ball head rod, and the other end is fixedly connected with the rod part of the lower ball head rod. A plurality of sub-joint mechanisms are connected through the connecting cylinders, so that the degree of freedom of the universal bracket is greatly improved, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a multi-joint ball hinge linkage locking universal bracket. Background Art

[0002] Universal brackets are usually made of multiple rods connected by swivel joints, and are a common device in life. By rotating each joint, the end can reach a variety of different positions and directions. It is often used in conjunction with table lamps, cameras, measuring instruments, medical equipment and other items to achieve the purpose of random positioning within a large space. The universal brackets commonly used in the market usually connect the rods through a rotating shaft to form a joint, and the friction between the two rods keeps the two rods stationary, which makes the length of the universal bracket not too long, the load cannot be too high, and the practicality is poor.

[0003] In order to solve the problems existing in the prior art, technicians in this field have made many efforts. For example, Chinese patent application CN20668215U proposes a linked locking ball joint universal rod, in which the ball head rod and the ball socket slider cooperate to realize the free swing of the connecting rod, and the locking effect is achieved by the push rod arranged in the ball head rod, thereby improving the load-bearing capacity and length of the universal rod. However, the degree of freedom it can achieve is relatively low, and it is still lacking in practicality. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multi-joint ball hinge linkage locking universal bracket, which connects multiple sub-joint mechanisms through a connecting tube, greatly improving the degree of freedom that can be achieved by the universal bracket and having high practicality.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a multi-joint ball hinge linkage locking universal bracket, including multiple sub-joint systems and multiple connecting tubes; the sub-joint system includes an upper ball head rod, a lower ball head rod and a connecting structure; one end of the connecting structure is hinged to the ball head part of the upper ball head rod, and the other end is hinged to the ball head part of the lower ball head rod; one end of the connecting tube is fixedly connected to the rod part of the upper ball head rod, and the other end is fixedly connected to the rod part of the lower ball head rod.

[0006] Furthermore, the connecting structure includes a joint tube; an upper joint cover plate and a lower joint cover plate are respectively provided at both ends of the joint tube; a slider is provided in the joint tube; the inner surface of the upper joint cover plate and one end surface of the slider constitute a ball socket matched with the ball head of the upper ball head rod; the inner surface of the lower joint cover plate and the other end surface of the slider constitute a ball socket matched with the ball head of the lower ball head rod; so as to realize the articulation of the upper ball head rod and the connecting structure, and the articulation of the lower ball head rod and the connecting structure.

[0007] Furthermore, the ball head rod includes an upper ball head sleeve and an upper ball crown push block; the spherical surface of the upper ball head sleeve and the spherical surface of the upper ball crown push block are located on the same spherical surface; the lower ball head rod includes a lower ball head sleeve and a lower ball crown push block; the spherical surface of the lower ball head sleeve and the spherical surface of the lower ball crown push block are located on the same spherical surface.

[0008] Furthermore, an axial through hole is provided in the upper ball head sleeve, the lower ball head sleeve and the connecting tube; a push rod is provided in the axial through hole for transmitting pressure to achieve locking of the sub-joint system.

[0009] Furthermore, the push rod includes a long push rod and a short push rod; the long push rod is arranged in the through hole in the connecting tube, and the two sides are respectively placed in the upper ball head sleeve and the lower ball head sleeve connected to the connecting tube; the short push rod is arranged in the upper ball head sleeve and the lower ball head sleeve not connected to the connecting tube.

[0010] Further, one end of the short putter sticks to the plane of the upper spherical crown push block or the lower spherical crown push block; one end of the long putter sticks to the plane of the upper spherical crown push block, and the other end sticks to the plane of the lower spherical crown push block.

[0011] Furthermore, the end surface of the long push rod is higher than the end surface of the through hole in the upper spherical crown push block or the lower spherical crown push block.

[0012] The technical solution described in the utility model has the following beneficial effects:

[0013] 1. The present invention connects multiple sub-joint systems in series through a connecting tube, and forms a sub-joint system through an upper ball head rod, a lower ball head rod and a connecting structure. Combined with the swing angle range of the upper ball head rod and the lower ball head rod, the swing angle of a single sub-joint system is greatly improved, thereby greatly improving the degree of freedom of the entire multi-joint ball hinge linkage locking universal bracket. This allows a larger degree of freedom to be obtained when using fewer sub-joint systems, and realizes the wide-range operation function of the universal bracket without reducing the reliability and positioning accuracy of the universal bracket, greatly improving the practicality of the multi-joint ball hinge linkage locking universal bracket.

[0014] 2. The present invention sets an axial through hole in the upper ball head rod and the lower ball head rod, and sets a push rod in the through hole, and makes the end face of the push rod contact with the upper ball crown push block or the lower ball crown push block, so that when locking is required, it is only necessary to apply a locking pressure at the first push rod, and the locking pressure can be transmitted to each sub-joint system through the push rod and the upper ball crown push block and the lower ball crown push block, thereby realizing the linkage locking of multiple joints, so that the end of the universal bracket can be reliably positioned through one operation, and it has high applicability for occasions where random, rapid, frequent and large-scale changes of target points are required during work.

[0015] In the present invention, the upper ball head rod is composed of an upper ball head sleeve and an upper ball crown push block, and the lower ball head rod is composed of a lower ball head sleeve and a lower ball crown push block. When the linkage locking is performed, the force is transmitted through the upper ball crown push block and the lower ball crown push block, thereby avoiding damage to the upper ball head sleeve and the lower ball head sleeve in long-term use, and further improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below according to specific embodiments and in combination with the accompanying drawings.

[0017] Figure 1 It is the overall structural front view of the utility model.

[0018] Figure 2 It is a schematic diagram of the shape change of the slider.

[0019] Figure 3 It is a schematic diagram of the push rod structure changes.

[0020] Among them, 1-upper head rod, 11-upper ball head sleeve, 12-upper ball crown push block, 13-short push rod, 2-connecting structure, 21-joint tube, 22-joint upper cover plate, 23-joint lower cover plate, 24-slider, 3-lower ball head rod, 31-lower ball head sleeve, 32-lower ball crown push block, 33-long push rod, 4-connecting tube, 5-solid ball head rod. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further explained below in conjunction with the accompanying drawings, but it is not limited to this. Any modification or equivalent replacement of the technical solution of the utility model without departing from the spirit and scope of the technical solution of the utility model should be included in the protection scope of the utility model.

[0022] like Figure 1 As shown, this embodiment provides a multi-joint ball hinge linkage locking universal bracket, including three sub-joint systems and two connecting tubes 4. The three sub-joint systems are connected in series through the connecting tube 4 to form a multi-joint ball hinge linkage locking universal bracket.

[0023] The sub-joint system includes an upper ball head rod 1, a lower ball head rod 3 and a connection structure 2. The upper ball head rod 1 is arranged on the upper side of the connection structure 2 and is hinged to the connection structure 2. The lower ball head rod 3 is arranged on the lower side of the connection structure 2 and is hinged to the connection structure 2. The upper ball head rod 1 includes an upper ball head sleeve 11 and an upper ball crown push block 12. The arc surface of the upper ball head sleeve 11 and the arc surface of the upper ball crown push block 12 are located on the same spherical surface, forming the ball head of the upper ball head rod 1. The lower ball head rod 3 includes a lower ball head sleeve 31 and a lower ball crown push block 32. The arc surface of the lower ball head sleeve 31 and the arc surface of the lower ball crown push block 32 are located on the same spherical surface, forming the ball head of the lower ball head rod 3. The connection structure 2 includes a joint tube 21, in which a slider 24 is arranged. The two end surfaces of the slider 24 are in contact with the ball head parts of the upper ball head rod 1 and the lower ball head rod 3, respectively, and the slider 24 can slide axially in the joint tube 21. The upper end surface and the lower end surface of the joint tube 21 are respectively provided with a joint upper cover plate 22 and a joint lower cover plate 23; the joint upper cover plate 22 and the joint lower cover plate 23 are connected to the joint tube 21 through threads. The inner surface of the joint upper cover plate 22 and the upper end surface of the slider 24 together form a semi-enclosed ball socket adapted to the ball head part of the upper ball head rod 1, which is used to accommodate the ball head part of the upper ball head rod 1, thereby forming a ball hinge. The inner surface of the joint lower cover plate 23 and the lower end surface of the slider 24 together form a semi-enclosed ball socket adapted to the ball head part of the lower ball head rod 3, which is used to accommodate the ball head part of the lower ball head rod 3, thereby forming a second ball hinge. When the sub-joint systems are connected in series, the connecting rod part of the lower ball head sleeve 31 in the first sub-shutdown system and the connecting rod part of the upper ball head sleeve 11 in the second sub-joint system are respectively connected to the two ends of the connecting tube 4 through threads, thereby realizing the series connection between the sub-joint systems.

[0024] When in use, the arcuate portion of the upper ball sleeve 11 is in contact with the cross section of the joint upper cover plate 22. When the upper ball sleeve 11 swings, the cross section of the joint upper cover plate 22 moves relative to the arcuate portion of the upper ball sleeve 11. When it slides to the junction of the arcuate portion and the flat portion of the upper ball sleeve 11, the maximum swing amplitude of the upper ball sleeve 11 is reached, forming a restriction on the alignment freedom. Similarly, the lower ball sleeve 31 also has its own range of freedom. Combining the upper ball sleeve 11 and the lower ball sleeve 31, the freedom of the entire sub-joint system can be greatly improved. Thereby, the freedom of the multi-joint ball hinge linkage locking universal bracket can be improved through multiple sub-joint systems.

[0025] like Figure 1As shown, the upper ball sleeve 11, the lower ball sleeve 31 and the middle of the connecting tube 4 are all provided with axial through holes for setting the push rod. The push rod includes a long push rod 33 and a short push rod 13. When the upper ball sleeve 11 or the lower ball sleeve 31 is located at the top or the bottom, it is not connected to the connecting tube 4. At this time, a short push rod 13 is set in the through hole in the middle, and one end face of the short push rod 13 is in contact with the plane end of the upper ball crown push block 12 or the lower ball crown push block 32, which is used to bear external pressure for subsequent locking operations. When the upper ball sleeve 11 or the lower ball sleeve 31 is located in the middle and bears the connecting medium, the connecting rod parts of the upper ball sleeve 11 and the lower ball sleeve 31 are respectively connected to the two ends of the connecting tube 4, and the two sides of the long push rod 33 are respectively placed in the through holes in the middle of the upper ball sleeve 11 and the lower ball sleeve 31, and the middle of the long push rod 33 is placed in the through hole in the middle of the connecting tube 4. Both ends of the long push rod 33 are slightly higher than the end faces of the through holes in the middle of the upper ball sleeve 11 and the lower ball sleeve 31, and are respectively attached to the plane ends of the upper ball crown push block 12 and the lower ball crown push block 32. It is used to transmit pressure to achieve the locking of the entire universal bracket.

[0026] When in use, the locking pressure is applied to the short push rod 13 to squeeze the upper ball crown push block 12 and the slider 24, thereby locking the upper ball head rod 1. At the same time, after the slider 24 is squeezed, the pressure is transmitted to the lower ball crown push block 32, thereby locking the lower ball head rod 3. Further, after the lower ball crown push block 32 is squeezed, the pressure is transmitted to the upper ball head rod 1 in the next sub-joint system through the long push rod 33, and then sequentially transmitted to the lower ball head rod 3 of the last sub-joint system according to the above process, thereby locking the entire universal bracket.

[0027] During the process of pressure transmission, since both ends of the long push rod 33 are slightly higher than the end faces of the through holes in the middle of the upper ball head sleeve 11 and the lower ball head sleeve 31, and are respectively in contact with the planar ends of the upper ball crown push block 12 and the lower ball crown push block 32, the pressure exerted on the lower ball crown push block 32 will not be borne by the platform on the upper side of the lower ball head sleeve 31, so that the locking pressure can be transmitted at one time through the long push rod 33, thereby locking the entire universal bracket.

[0028] Preferably, Figure 1 As shown, when the upper ball head rod 1 or the lower ball head rod 3 is located at the top or bottom and is used to connect with actuators such as medical equipment and cameras, the upper ball head rod 1 or the lower ball head rod 3 can be replaced by a solid ball head rod 5 to reduce processing difficulty and cost.

[0029] Preferably, Figure 2 As shown, the shape of the slider 24 is not fixed. It can be a horizontal funnel shape, forming arc surfaces at the upper and lower ends that match the ball head part of the upper ball head rod 1, or it can be a rectangular or circular shape, with the upper and lower ends only abutting against the ball head part of the upper ball head rod 1.

[0030] Preferably, Figure 3 As shown, the long push rod 33 and the short push rod 13 can be composed of a combination of a push rod and a small ball of equal diameter, wherein the small ball is placed at the position where the long push rod 33 and / or the push rod contacts the upper ball crown push block 12 or the lower ball crown push block 32, thereby transforming the horizontal contact surface into an arc-shaped contact surface, so that the small ball can adjust the force direction by its own deformation when under pressure, so as to better transmit the locking pressure.

[0031] The present invention forms a sub-joint system through an upper ball head rod, a lower ball head rod and a connecting structure, and combines the swing angle range of the upper ball head rod and the lower ball head rod to greatly improve the swing angle of a single sub-joint system, so that a range of 6 degrees of freedom can be achieved through a single joint. Compared with the prior art that achieves a range of 3 degrees of freedom through a ball head rod and a ball head, the present invention greatly improves the degree of freedom of the entire multi-joint ball hinge linkage locking universal bracket. It makes it possible to obtain a larger degree of freedom when using fewer sub-joint systems, and realizes a wide range of operation functions of the universal bracket without reducing the reliability and positioning accuracy of the universal bracket, which greatly improves the practicality of the multi-joint ball hinge linkage locking universal bracket.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-joint ball hinge linkage locking universal bracket, characterized in that: The invention comprises a plurality of sub-joint systems and a plurality of connecting tubes (4); the sub-joint system comprises an upper ball head rod (1), a lower ball head rod (3) and a connecting structure (2); one end of the connecting structure (2) is hinged to the ball head portion of the upper ball head rod (1), and the other end is hinged to the ball head portion of the lower ball head rod (3); one end of the connecting tube (4) is fixedly connected to the rod portion of the upper ball head rod (1), and the other end is fixedly connected to the rod portion of the lower ball head rod (3).

2. The multi-joint ball hinge linkage locking universal bracket according to claim 1, characterized in that: The connection structure (2) comprises a joint tube (21); the two ends of the joint tube (21) are respectively provided with a joint upper cover plate (22) and a joint lower cover plate (23); a slider (24) is provided inside the joint tube (21); the inner surface of the joint upper cover plate (22) and one end surface of the slider (24) form a ball socket matched with the ball head of the upper ball head rod (1); the inner surface of the joint lower cover plate (23) and the other end surface of the slider (24) form a ball socket matched with the ball head of the lower ball head rod (3); so as to realize the articulation of the upper ball head rod (1) and the connection structure (2) and the articulation of the lower ball head rod (3) and the connection structure (2).

3. The multi-joint ball hinge linkage locking universal bracket according to claim 1, characterized in that: The upper ball head rod (1) comprises an upper ball head sleeve (11) and an upper ball crown push block (12); the spherical surface of the upper ball head sleeve (11) and the spherical surface of the upper ball crown push block (12) are located on the same spherical surface; the lower ball head rod (3) comprises a lower ball head sleeve (31) and a lower ball crown push block (32); the spherical surface of the lower ball head sleeve (31) and the spherical surface of the lower ball crown push block (32) are located on the same spherical surface.

4. The multi-joint ball hinge linkage locking universal bracket according to claim 3, characterized in that: An axial through hole is provided in the upper ball head sleeve (11), the lower ball head sleeve (31) and the connecting tube (4); a push rod is provided in the axial through hole for transmitting pressure to achieve locking of the sub-joint system.

5. The multi-joint ball hinge linkage locking universal bracket according to claim 4, characterized in that: The push rod comprises a long push rod (33) and a short push rod (13); the long push rod (33) is arranged in a through hole in a connecting tube (4), and two sides thereof are respectively arranged in an upper ball head sleeve (11) and a lower ball head sleeve (31) connected to the connecting tube (4); the short push rod (13) is arranged in an upper ball head sleeve (11) and a lower ball head sleeve (31) not connected to the connecting tube (4).

6. The multi-joint ball hinge linkage locking universal bracket according to claim 5, characterized in that: One end of the short push rod (13) is in contact with the plane of the upper spherical crown push block (12) or the lower spherical crown push block (32); one end of the long push rod (33) is in contact with the plane of the upper spherical crown push block (12), and the other end is in contact with the plane of the lower spherical crown push block (32).

7. The multi-joint ball hinge linkage locking universal bracket according to claim 5, characterized in that: The end surface of the long push rod (33) is higher than the end surface of the through hole in the upper spherical crown push block (12) or the lower spherical crown push block (32).

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