Switching joint and switching device for photographic equipment

Abstract

The utility model discloses a switching joint which comprises a first joint clamp and a second joint clamp which are spliced to form a containing cavity, a movable track extending in the circumferential direction is arranged on the side face of the containing cavity, and an annular fluted disc is arranged on the inner bottom face of the first joint clamp and / or the second joint clamp. The connecting piece penetrates through the first joint clamp and the second joint clamp and is used for locking or loosening the first joint clamp and the second joint clamp; the first fixing piece and the second fixing piece are spliced to form a mounting cavity and arranged in the containing cavity, the side face of the mounting cavity is provided with an extending hole, and the outer top face of the first fixing piece and / or the outer top face of the second fixing piece are / is provided with meshing teeth capable of being matched with the annular fluted disc; the adapter is rotatably clamped in the accommodating cavity and is provided with an adapter; an oil storage groove used for containing lubricating liquid is formed in the containing cavity and / or the mounting cavity. The utility model also discloses a switching device for photographic equipment. According to the utility model, large-range adjustment can be realized, and different use scenes can be adapted; and noise is reduced through the arrangement of lubricating liquid.

Description

Technical Field

[0001] This utility model belongs to the field of adapter structure technology, and in particular relates to an adapter joint and an adapter device for photographic equipment. Background Technology

[0002] In daily life, the relative angles between the connecting rods of a universal joint are commonly used to adjust the relative positions of photographic equipment, fill lights, etc. For example, Chinese patent CN101737603B discloses a universal joint, which uses a control device to control a first drive device and a second drive device located at both ends of a third connecting rod to change the angle of the first and second connecting rods relative to the third connecting rod, thus achieving automatic adjustment of the universal joint's angle. However, its structure is relatively complex, its operating cost is high, and the interaction between the transmission gears and the drive device generates significant frictional noise. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a transition joint and a transition device for photographic equipment, which can realize the rotation of the transition part around its own central axis and the swing within the movable track. It has a wide adjustment range, simple adjustment operation, and no noise is generated during operation.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a transition joint, comprising:

[0005] The first joint clamp and the second joint clamp are assembled to form a receiving cavity. The side of the receiving cavity has a movable track extending in the circumferential direction, and the inner bottom surface of the first joint clamp and / or the second joint clamp has a circular toothed disc.

[0006] A connector passes through the first and second joint clamps for locking or releasing the first and second joint clamps;

[0007] The first and second fixing members are assembled to form an installation cavity and placed inside the receiving cavity. The side of the installation cavity has an extension hole, and the outer top surface of the first and / or second fixing members has meshing teeth that can cooperate with the annular toothed disc.

[0008] The adapter is rotatably mounted in the receiving cavity around its own central axis and has an adapter that passes through an extension hole and a movable track in sequence.

[0009] The accommodating cavity and / or mounting cavity have an oil reservoir for containing lubricating fluid.

[0010] Furthermore, the adapter includes an end head and an extension. The end head is rotatably mounted in the accommodating cavity around its own central axis. The extension passes through the protrusion hole and the movable track in sequence to form an adapter. The outer wall of the end head forms a first annular oil storage groove that surrounds the entire circumference.

[0011] Furthermore, the outer wall of the end head forms a convex ridge extending along the axial direction, the convex ridge being discontinuous at the first annular oil reservoir, and the inner bottom surface of the first fixing member and / or the second fixing member having a protrusion that can engage with the convex ridge.

[0012] Furthermore, the adapter includes a body and a sleeve sleeved on the outside of the body, the sleeve and the body being rotatable relative to each other; both the body and the sleeve have an end head and an extension, and the end of the extension of the sleeve extends radially outward to form an annular support portion, and a positioning protrusion is formed on the end face of the annular support portion.

[0013] Furthermore, an elastic element is provided between the first joint clamp and the second joint clamp. When the connector locks the first joint clamp and the second joint clamp, the elastic element is in a compressed state. The first joint clamp and the second joint clamp are assembled to form a cavity for accommodating the elastic element. The connector passes through the cavity, and the elastic element is sleeved on the outer periphery of the connector.

[0014] Furthermore, the side of the mounting cavity opposite the protrusion hole has an adjustment hole for the adjustment member to extend into, and the end face of the end head has a positioning groove for the adjustment member to partially engage.

[0015] Furthermore, the inner bottom surface of the first joint clamp and / or the second joint clamp, and the inner ring of the annular toothed disc, have a second annular oil reservoir formed by a recess and surrounding the entire circumference.

[0016] Furthermore, the height of the inner ring wall of the second annular oil reservoir is less than the height of the outer ring wall to form a stepped structure. The outer top surface of the first fixing member and / or the second fixing member has a limiting protrusion that can be inserted into the stepped structure. The limiting protrusion is located inside the meshing teeth.

[0017] Furthermore, the mounting cavity formed by the first and second fixing members is provided with fixing teeth and grooves, which surround the outer periphery of the mounting cavity.

[0018] Furthermore, the first joint clamp and the second joint clamp are assembled to form two receiving cavities, which are symmetrically arranged on both sides of the connector; the connector includes a rod with external threads and a locking member with internal threads, and the rod passes through the first joint clamp and the second joint clamp and is threadedly connected to the locking member.

[0019] Furthermore, the lubricating oil is a damping oil.

[0020] This utility model also discloses an adapter for photographic equipment, comprising: an adapter joint as described above, wherein the adapter joint has two accommodating cavities, which are symmetrically arranged on both sides of the connector.

[0021] The beneficial effects of this utility model are: 1) By utilizing the adapter to rotate around its own central axis and swing within the movable track, a wide range of adjustments can be achieved, adapting to different usage scenarios; 2) The receiving cavity and mounting cavity have oil reservoirs, and the lubricating fluid ensures that no significant noise is generated during the mutual rotation of the annular toothed disc and the meshing teeth, or during the mutual rotation of the protrusions and ridges, resulting in a better user experience; 3) The design of the first and second annular oil reservoirs prevents the damping oil from leaking out randomly, ensuring a high overall cleanliness of the adapter joint; 4) The cooperation between the annular toothed disc and the meshing teeth, and the cooperation between the protrusions and ridges, results in a large locking force for the adapter joint, ensuring smooth operation. 4) An elastic element is set between the first joint clamp and the second joint clamp, so that when adjusting the angle and orientation of the adapter, the annular toothed disc and the meshing teeth can move away from each other, which facilitates the overall swing of the first fixing part, the adapter, and the second fixing part, and makes it easier for the adapter to rotate around its own central axis, making operation more labor-saving; 5) When the adjustment hole is exposed on the moving track, the adapter can be disassembled and assembled with the external carrier by inserting the adjustment element into the positioning groove, which is convenient to operate and adapts to different usage scenarios; 6) The connection of multiple adapter joints and connecting rods or external carriers can adapt to different usage scenarios and usage requirements. Attached Figure Description

[0022] Figure 1 The three-dimensional adapter joint provided by this utility model Figure 1 .

[0023] Figure 2 The three-dimensional adapter joint provided by this utility model Figure 2 .

[0024] Figure 3 The three-dimensional adapter joint provided by this utility model Figure 3 .

[0025] Figure 4 Cross-sectional view of the adapter joint provided by this utility model Figure 1 .

[0026] Figure 5 for Figure 4 Enlarged view of the structure at point A in the image.

[0027] Figure 6 This is an exploded structural diagram of the adapter joint provided by this utility model.

[0028] Figure 7 A perspective view of the second joint clamp provided by this utility model.

[0029] Figure 8 A perspective view of the second fastener provided by this utility model.

[0030] Figure 9A cross-sectional view showing the cooperation between the first and second fasteners provided by this utility model.

[0031] Figure 10 Cross-sectional view of the adapter joint provided by this utility model Figure 2 .

[0032] Figure 11 A schematic diagram of the adapter joint and two connecting rods provided by this utility model. Figure 1 .

[0033] Figure 12 A schematic diagram of the adapter joint and two connecting rods provided by this utility model. Figure 2 .

[0034] Figure 13 A cross-sectional view of the adapter joint and two connecting rods provided by this utility model.

[0035] Figure 14 for Figure 13 Enlarged view of the structure at point B in the image.

[0036] Figure 15 An exploded view of the adapter joint and two connecting rods provided by this utility model.

[0037] Among them, 11-first joint clamp, 12-second joint clamp, 13-accommodating cavity, 14-movable track, 15-annular toothed disc, 16-chamber, 17-second annular oil reservoir, 171-inner ring wall, 172-outer ring wall, 2-connector, 21-rod, 22-locking component, 31-first fixing component, 32-second fixing component, 33-mounting cavity, 34-extension hole, 35-engagement. 36-Protrusion, 37-Adjustment hole, 38-Limiting protrusion, 391-Fixing tooth, 392-Groove, 4-Adapter, 41-End head, 411-First annular oil reservoir, 412-Protruding ridge, 413-Positioning groove, 42-Extension, 421-Adapter, 422-Annular support, 43-Body, 44-Sleeve, 441-Positioning protrusion, 5-Elastic element, 6-Connecting rod. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0039] like Figures 1-11As shown, a transition joint includes a first joint clamp 11 and a second joint clamp 12, a connector 2, a first fixing member 31 and a second fixing member 32 located between the first joint clamp 11 and the second joint clamp 12, and a transition member 4 located between the first fixing member 31 and the second fixing member 32.

[0040] The first joint clamp 11 and the second joint clamp 12 are assembled to form a receiving cavity 13. The connecting member 2 passes through the first joint clamp 11 and the second joint clamp 12 to lock or release the first joint clamp 11 and the second joint clamp 12. In this embodiment, there are two receiving cavities 13, which are symmetrically distributed on both sides of the connecting member 2. Taking the structure of a single receiving cavity 13 as an example, the side of the receiving cavity 13 has a movable track 14 extending circumferentially, and the inner bottom surface of the first joint clamp 11 has an annular toothed disc 15, such as... Figure 7 As shown, the inner bottom surface of the second joint clamp 12 also has an annular toothed disc 15. Of course, in other embodiments, the annular toothed disc 15 may only be present on the inner bottom surface of the first joint clamp 11, or the annular toothed disc 15 may only be present on the inner bottom surface of the second joint clamp 12.

[0041] The first fixing member 31 and the second fixing member 32 are assembled to form a mounting cavity 33, and the first fixing member 31 and the second fixing member 32 are placed in the receiving cavity 13 after assembly. Figure 3 , Figure 4 As shown, the mounting cavity 33 has an extension hole 34 on its side. The outer top surface of the first fixing member 31 has a biting tooth 35 that can cooperate with the annular toothed disc 15 on the first joint clamp 11, and the outer top surface of the second fixing member 32 has a biting tooth 35 that can cooperate with the annular toothed disc 15 on the second joint clamp 12. Of course, when the annular toothed disc 15 is formed only on the inner bottom surface of the first joint clamp 11, the biting tooth 35 can be provided only on the outer top surface of the first fixing member 31; when the annular toothed disc 15 is formed only on the inner bottom surface of the second joint clamp 12, the biting tooth 35 can be provided only on the outer top surface of the second fixing member 32.

[0042] Specifically, the annular toothed disc 15 and the meshing teeth 35 are both formed by a continuous arrangement of multiple radially outwardly radiating convex teeth in a circumferential circle.

[0043] The adapter 4 includes a head 41 and an extension 42. The head 41 is rotatably mounted in the receiving cavity 13 around its own central axis. The extension 42 passes through the protrusion hole 34 and the movable track 14 in sequence to form an adapter 421. In this embodiment, both the end head 41 and the extension 42 include inner and outer parts. That is, the adapter 4 includes a body 43 and a sleeve 44 sleeved on the outside of the body 43. The sleeve 44 and the body 43 can rotate relative to each other. In this embodiment, the inner wall of the sleeve 44 has internal threads and the outer wall of the body 43 has external threads. The two are threaded together. Moreover, both the body 43 and the sleeve 44 have the structure of an end head and an extension. The first annular oil reservoir 411 is provided on the outer wall of the end head of the sleeve 44. The end of the extension of the sleeve 44 extends radially outward to form an annular support 422. A positioning protrusion 441 is formed on the end face of the annular support 422. The positioning protrusion 441 can be positioned and engaged with the external carrier. When the body 43 and the external carrier are rotated and threadedly connected, the external carrier is prevented from rotating relative to the adapter 4.

[0044] The lubricating fluid reservoir is located only in the accommodating cavity 13, or only in the mounting cavity 33, or in both the accommodating cavity 13 and the mounting cavity 33. In this embodiment, the lubricating fluid is damping oil.

[0045] Therefore, when the meshing teeth 35 of the first fixing member 31 and the second fixing member 32 engage and rotate with the annular toothed disc 15 of the first joint clamp 11 and the second joint clamp 12, no significant noise is generated, and the first fixing member 31 and the second fixing member 32 securely hold the first joint clamp 11 and the second joint clamp 12. Similarly, when the adapter 4 rotates relative to the receiving cavity 13, no significant noise is generated.

[0046] Specifically, such as Figure 5 , Figure 6 As shown, a first annular oil reservoir 411 is formed around the outer wall of the end head 41 of the sleeve 44, which is formed by an inward indentation of the outer wall of the end head 41. To increase the locking force of the first fixing member 31 and the second fixing member 32 on the adapter 4, a protruding ridge 412 extending along its axial direction is formed on the outer wall of the end head 41, and this protruding ridge 412 is interrupted at the first annular oil reservoir 411. More specifically, the extending direction of the protruding ridge 412 is perpendicular to the extending direction of the first annular oil reservoir 411, and the first annular oil reservoir 411 divides the protruding ridge 412 into two sections. Meanwhile, as... Figure 8As shown, the inner bottom surface of the first fixing member 31 has a protrusion 36 that can engage with the convex rib 412; alternatively, the protrusion 36 can be provided on the inner bottom surface of the second fixing member 32; or, both the inner bottom surfaces of the first fixing member 31 and the second fixing member 32 have protrusions 36. Thus, when the convex rib 412 and the protrusion 36 engage with each other, and the first fixing member 31 and the second fixing member 32 provide sufficient clamping force, the adapter 4 can stably remain in the target position.

[0047] like Figure 5 , Figure 7 As shown, the inner bottom surfaces of the first joint clamp 11 and the second joint clamp 12, as well as the inner ring of the annular toothed disc 15, are all recessed and surround a second annular oil reservoir 17. Of course, in other embodiments, the second annular oil reservoir 17 may be formed only on the inner bottom surface of the first joint clamp 11, or only on the inner bottom surface of the second joint clamp 12.

[0048] The height of the inner wall 171 of the second annular oil storage tank 17 is less than the height of the outer wall 172, thus forming a stepped structure with varying heights. For example... Figure 9 As shown, the outer top surfaces of the first fixing member 31 and the second fixing member 32 both have limiting protrusions 38. The limiting protrusions 38 are located inside the annular meshing teeth 35. The limiting protrusions 38 can be inserted into the stepped structure, and the end face of the limiting protrusions 38 abuts against the inner bottom surface of the inner ring of the second annular oil reservoir 17 of the first joint clamp 11. The damping oil in the second annular oil reservoir 17 can not only flow to the meshing teeth 35, but also prevent the damping oil from flowing outward.

[0049] like Figure 9 As shown, the mounting cavity 33 formed by the assembly of the first fixing member 31 and the second fixing member 32 is provided with fixing teeth 391 and tooth grooves 392. The fixing teeth 391 are engaged in the tooth grooves 392, and as shown... Figure 8 As shown, except at the positions of the protrusion hole 34 and the adjustment hole 37, the fixing teeth 391 and the tooth groove 392 surround the mounting cavity 33.

[0050] like Figure 2 , Figure 10 As shown, the side of the mounting cavity 33, opposite to the protrusion hole 34, has an adjustment hole 37. This adjustment hole 37 allows an adjusting component to extend into it. Specifically, the adjusting component can be an adjusting screw. The end face of the head 41 of the body 43 has a positioning groove 413 for the adjusting component to partially engage. Therefore, it is not necessary to remove the adapter 4 from the mounting cavity 33. Simply rotate the adapter 4 until the adjustment hole 37 is exposed in the movable track 14, and use the adjusting component to extend into the positioning groove 413. Applying external force to rotate the adjusting component allows the adapter 4 to be disassembled and assembled with the external carrier. In this embodiment, the adapter 421 has an external thread, which can be threadedly connected to the external carrier.

[0051] like Figure 4 , Figure 6 As shown, the connector 2 includes a rod 21 with external threads and a locking member 22 with internal threads. The rod 21 passes through the first joint clamp 11 and the second joint clamp 12 and is threadedly connected to the locking member 22. A bearing is provided between the locking member 22 and the first joint clamp 11. The first joint clamp 11 and the second joint clamp 12 are assembled to form a cavity 16. An elastic member 5 is placed in the cavity 16. The connector 2 passes through the cavity 16, and the elastic member 5 is sleeved on the outer periphery of the connector 2. When the connector 2 locks the first joint clamp 11 and the second joint clamp 12, the elastic member 5 is in a compressed state. This ensures that the first joint clamp 11 and the second joint clamp 12 firmly clamp the first fixing member 31 and the second fixing member 32, while the adapter 4 and the first fixing member 31 and the second fixing member 32 rotate relatively smoothly in the accommodating cavity 13.

[0052] During assembly, the end 41 of the adapter 4 is placed on the second fixing member 32, damping oil is dripped into the first annular oil reservoir 411, and then the first fixing member 31 is assembled on top of the second fixing member 32. The extension 42 of the adapter 4 protrudes from the protrusion hole 34. Damping oil is dripped into the second annular oil reservoir 17 of the first joint clamp 11 and the second joint clamp 12. After the first fixing member 31, the adapter 4, and the second fixing member 32 are placed as a whole in the second joint clamp 12, the first joint clamp 11 and the second joint clamp 12 are assembled vertically, and the elastic member 5 is placed between the first joint clamp 11 and the second joint clamp 12. The first joint clamp 11 and the second joint clamp 12 are locked using the connector 2, and the extension 42 protrudes from the movable track 14.

[0053] When the angle needs to be adjusted, the rod 21 and locking member 22 are rotated to loosen them. An external force is applied to make the first fixing member 31, the adapter 4, and the second fixing member 32 rotate as a whole in the accommodating cavity 13. The extension 42 swings in the movable track 14. Since the second annular oil reservoir 17 contains damping oil, the relative rotation of the meshing teeth 35 and the annular toothed disc 15 will not produce much noise. An external force is applied to make the adapter 4 rotate around its own central axis and connect to the external carrier. Since the first annular oil reservoir 411 contains damping oil, the relative rotation between the convex rib 412 and the protrusion 36 will not produce much noise.

[0054] When the target angle needs to be adjusted and locked, the rod 21 and the locking member 22 are rotated and locked. At this time, the biting teeth 35 and the annular toothed disc 15 are engaged, so the first fixing member 31, the adapter 4 and the second fixing member 32 cannot rotate in the accommodating cavity 13. The protrusion 412 and the protrusion 36 are engaged, so the adapter 4 cannot rotate and the adapter 4 stays at the target position and angle.

[0055] An adapter for photographic equipment includes the aforementioned adapter joint, having two accommodating cavities 13 symmetrically arranged on both sides of the connector 2, and two adapter components 4, as shown. Figures 11-15 As shown, adapter 4 is connected to adapter rod 6, which can be connected to another connecting rod via another adapter joint. Of course, adapter 4 can also be connected to photographic auxiliary equipment such as gimbals; there are no specific limitations.

[0056] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A transition joint, characterized in that, include: The first joint clamp (11) and the second joint clamp (12) are assembled to form a receiving cavity (13). The receiving cavity (13) has a movable track (14) extending in the circumferential direction on its side. The bottom surface of the first joint clamp (11) and / or the second joint clamp (12) has an annular toothed disc (15). The connector (2) passes through the first joint clamp (11) and the second joint clamp (12) and is used to lock or release the first joint clamp (11) and the second joint clamp (12); The first fixing member (31) and the second fixing member (32) are assembled to form an installation cavity (33) and placed in the receiving cavity (13). The side of the installation cavity (33) has an extension hole (34). The outer top surface of the first fixing member (31) and / or the second fixing member (32) has a biting tooth (35) that can cooperate with the annular toothed disc (15). The adapter (4) is rotatably mounted in the receiving cavity (13) and has an adapter (421) that passes through the extension hole (34) and the movable track (14) in sequence; The accommodating cavity (13) and / or mounting cavity (33) have oil reservoirs for containing lubricating liquid.

2. The adapter joint according to claim 1, characterized in that: The adapter (4) includes an end head (41) and an extension (42). The end head (41) is rotatably mounted in the receiving cavity (13) around its own central axis. The extension (42) passes through the protrusion hole (34) and the movable track (14) in sequence to form an adapter (421). The outer wall of the end head (41) forms a first annular oil storage groove (411) that surrounds the entire perimeter.

3. The adapter joint according to claim 2, characterized in that: The outer wall of the end head (41) forms a convex ridge (412) extending along the axial direction. The convex ridge (412) is interrupted at the first annular oil reservoir (411). The inner bottom surface of the first fixing member (31) and / or the second fixing member (32) has a protrusion (36) that can engage with the convex ridge (412).

4. The adapter joint according to claim 2, characterized in that: The adapter (4) includes a body (43) and a sleeve (44) sleeved on the outside of the body (43). The sleeve (44) and the body (43) can rotate relative to each other. Both the body (43) and the sleeve (44) have an end head and an extension. The end of the extension of the sleeve (44) extends radially outward to form an annular support (422), and a positioning protrusion (441) is formed on the end face of the annular support (422).

5. The adapter joint according to claim 1, characterized in that: An elastic element (5) is provided between the first joint clamp (11) and the second joint clamp (12). When the connector (2) locks the first joint clamp (11) and the second joint clamp (12), the elastic element (5) is in a compressed state. The first joint clamp (11) and the second joint clamp (12) are assembled to form a cavity (16) for accommodating the elastic element (5). The connector (2) passes through the cavity (16), and the elastic element (5) is sleeved on the outer periphery of the connector (2).

6. The adapter joint according to claim 1, characterized in that: The mounting cavity (33) has an adjustment hole (37) on its side opposite to the protrusion hole (34) for the adjustment member to extend into, and the end face of the end head (41) has a positioning groove (413) for the adjustment member to partially engage.

7. The adapter joint according to claim 1, characterized in that: The inner bottom surface of the first joint clamp (11) and / or the second joint clamp (12), and the inner ring of the annular toothed disc (15) have a second annular oil reservoir (17) formed by a recess and surrounding the entire ring.

8. The adapter joint according to claim 7, characterized in that: The height of the inner ring wall (171) of the second annular oil reservoir (17) is less than the height of the outer ring wall (172) to form a stepped structure. The outer top surface of the first fixing member (31) and / or the second fixing member (32) has a limiting protrusion (38) that can be inserted into the stepped structure. The limiting protrusion (38) is located inside the biting teeth (35).

9. The adapter joint according to claim 1, characterized in that: The first fixing member (31) and the second fixing member (32) are assembled to form an installation cavity (33) with fixing teeth (391) and tooth grooves (392) surrounding the outer periphery of the installation cavity (33).

10. The adapter joint according to claim 1, characterized in that: The first joint clamp (11) and the second joint clamp (12) are assembled to form two receiving cavities (13), which are symmetrically arranged on both sides of the connector (2); the connector (2) includes a rod (21) with external threads and a locking member (22) with internal threads. The rod (21) passes through the first joint clamp (11) and the second joint clamp (12) and is threadedly connected to the locking member (22).

11. The adapter joint according to claim 1, characterized in that: The lubricating oil is a damping oil.

12. An adapter for photographic equipment, characterized in that, include: The adapter joint as described in any one of claims 1-11 has two accommodating cavities (13), which are symmetrically arranged on both sides of the connector (2).

Images