Landing leg assembly and tripod

Abstract

The supporting leg assembly comprises a first pipe fitting, a second pipe fitting, a third pipe fitting, an outer pipe fitting, a first locking assembly and a second locking assembly, and the upper end of the second pipe fitting penetrates through the lower end of the first pipe fitting and is contained in the first pipe fitting in a sliding mode. The upper end of the third pipe fitting penetrates through the lower end of the second pipe fitting and is contained in the second pipe fitting in a sliding mode, the outer pipe fitting surrounds the outer side of the second pipe fitting, and the upper end of the outer pipe fitting is arranged on the second pipe fitting in a sleeving mode. In the embodiment of the utility model, when the outer pipe fitting rotates along the first direction, the second locking component locks the second pipe fitting and the third pipe fitting, the first locking component selectively locks the first pipe fitting and the second pipe fitting at the same time, and when the outer pipe fitting rotates along the second direction, the second locking component unlocks the second pipe fitting and the third pipe fitting. The first locking assembly can selectively unlock the first pipe fitting and the second pipe fitting at the same time, the first locking assembly and the second locking assembly can be operated at the same time or independently, operation is diversified, and different operation scenes are used.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment technology, and in particular to a leg assembly and a tripod. Background Technology

[0002] A tripod is a traditional and commonly used support structure that uses three legs to provide a stable and reliable support platform for other equipment. While its most common application is as a support for equipment such as cameras, tripods have many other potential uses. For example, tripods can also be used to support laser sights for surveying, cameras for photography, telescopes for sky observation, and so on.

[0003] To assist in shooting and achieve better shooting results, the tripod legs have telescopic functions to adjust the shooting height of the camera. However, in the existing technology, the tripod leg adjustment structure includes a first locking component and a second locking component. The first locking component and the second locking component must either be unlocked or locked at the same time, or they need to be unlocked separately. The operation is simple and the usage scenarios are limited. Utility Model Content

[0004] The main purpose of this utility model is to propose a support leg assembly to solve the technical problem of limited unlocking or locking operations and restricted application scenarios.

[0005] To achieve the above objectives, this utility model proposes a support leg assembly, comprising:

[0006] First pipe fitting;

[0007] The second pipe fitting has its upper end passing through the lower end of the first pipe fitting and being slidably accommodated within the first pipe fitting;

[0008] The upper end of the third pipe fitting passes through the lower end of the second pipe fitting and is slidably accommodated within the second pipe fitting;

[0009] An outer fitting, which is sleeved on the outside of the second fitting;

[0010] A first locking assembly, rotatably mounted on the upper end of the outer pipe fitting and sleeved on the first pipe fitting; and

[0011] The second locking assembly is installed on the lower end of the outer tube and the lower end of the second tube, and is sleeved on the third tube;

[0012] When the outer tube rotates in the first direction, the second locking assembly locks the second tube and the third tube, and optionally the first locking assembly locks the first tube and the second tube simultaneously. When the outer tube rotates in the second direction, the second locking assembly unlocks the second tube and the third tube, and optionally the first locking assembly unlocks the first tube and the second tube simultaneously.

[0013] In some embodiments, the first locking assembly includes a first driving member, a first spring sleeve, and a first clamping member rotatably connected to the outer tube. The first driving member, the first spring sleeve, and the first clamping member are all disposed on the first tube. The end of the first clamping member away from the outer tube is located between the first driving member and the first spring sleeve. The first clamping member cannot rotate circumferentially relative to the first tube. The internal thread of the first driving member is connected to the external thread of the first clamping member. The end of the first driving member away from the outer tube is connected to one end of the first spring sleeve. The outer diameter of the first spring sleeve gradually decreases from the upper end to the lower end. The first clamping member has a first groove that matches the first spring sleeve.

[0014] When the first driving member rotates along the first direction, it drives the first spring sleeve to move axially downward, so that the first pressing member presses the first spring sleeve onto the first pipe.

[0015] In some embodiments, an axially extending groove and a protrusion are provided between the inner wall of the first clamping member and the outer wall of the first pipe. The protrusion is slidably accommodated in the groove, so that the first clamping member can move axially along the first pipe but cannot rotate circumferentially.

[0016] In some embodiments, an annular groove and an annular portion are provided between the outer tube and the first clamping member, and the annular portion is rotatably accommodated within the annular groove.

[0017] In some embodiments, a hand sleeve is fixedly fitted on the upper end of the outer tube, and a first annular member and a second annular member are provided on the upper end of the hand sleeve. The first annular member is fixedly connected to the upper end of the hand sleeve, and the lower end of the second annular member is fixedly fitted on the outer periphery of the first annular member. A first limiting portion extends from the upper end of the second annular member toward the central axis of the second tube, and the first limiting portion and the first annular member form the annular groove. The lower end of the first clamping member is surrounded by the annular portion.

[0018] In some embodiments, the second locking assembly includes a second driving member, a second spring sleeve sleeved on the third tube, and a second pressing member fixedly connected to the lower end of the second tube. The second driving member is fixedly connected to the lower end of the outer tube. When the outer tube rotates in a first direction, it drives the second driving member to rotate, thereby causing the second spring sleeve to move axially upward, so that the second pressing member presses the second spring sleeve on the third tube.

[0019] In some embodiments, the outer diameter of the second sleeve gradually decreases from the lower end to the upper end, the second clamping member has a second groove matching the second sleeve on the side away from the second tube, the internal thread of the second driving member is connected to the external thread of the second clamping member, the lower end of the second driving member is connected to the lower end of the second sleeve, and the lower end of the second clamping member is located between the second sleeve and the second driving member.

[0020] In some embodiments, the first pipe fitting and the second pipe fitting are axially movable but not circumferentially rotated; and / or

[0021] The second and third pipe fittings can move axially but cannot rotate circumferentially.

[0022] In some embodiments, two anti-slip plates are provided on both sides of the upper end of the second pipe fitting; and / or two anti-slip plates are provided on both sides of the upper end of the third pipe fitting.

[0023] This utility model also proposes a tripod, which includes a mounting base and a leg assembly as described above. The leg assembly includes a first tube and an outer tube, and the end of the first tube away from the outer tube is rotatably connected to the mounting base.

[0024] Compared with the outrigger assembly structure of related technologies, in the outrigger assembly of this utility model, when the user manually rotates the outer tube, the second locking component locks the second and third tubes when the outer tube rotates in the first direction, preventing relative movement between the second and third tubes. Alternatively, the user can manually operate the outer tube and the first locking component simultaneously, with the first locking component locking the first and second tubes, preventing relative movement between them. When the user manually rotates the outer tube in the second direction, the second locking component unlocks the second and third tubes, allowing relative movement between them for adjustment. The extension length between the two parts can be adjusted by manually operating the outer tube and the first locking component simultaneously. The first locking component unlocks the first and second tubes, allowing them to move relative to each other to adjust the extension length between them. Users can lock or unlock the first, second, and third tubes individually or simultaneously by rotating the outer tube and the first locking component, or by rotating the outer tube and the first locking component simultaneously, to adjust the extension length between them. This allows for adjustment of the length of the support leg assembly. It is easy to operate, has a simple and compact structure, is easy to carry, and offers diverse operation to meet the needs of users in various scenarios. Attached Figure Description

[0025] Figure 1 This is a partial structural schematic diagram of the support leg assembly according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the stretching portion of the support leg assembly according to an embodiment of the present utility model.

[0027] Figure 3 This is a cross-sectional view of a portion of the structure of the support leg assembly according to an embodiment of the present utility model;

[0028] Figure 4 This is a cross-sectional view of another part of the structure of the support leg assembly according to an embodiment of the present utility model.

[0029] Explanation of icon numbers:

[0030] First fitting 1;

[0031] Second fitting 2;

[0032] Third fitting 3;

[0033] Outer tube 4; Hand grip 41; First annular part 42; Second annular part 43; First limiting part 431; Anti-detachment part 44;

[0034] First locking assembly 5; first driving member 51; first spring sleeve 52; first pressing member 53; annular portion 531;

[0035] Second locking assembly 6; second driving member 61; second spring sleeve 62; second clamping member 63. Detailed Implementation

[0036] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0037] In response to the technical defects existing in related technologies, such as Figure 1 and Figure 2 As shown, the outrigger assembly provided in this embodiment includes:

[0038] First fitting 1;

[0039] The upper end of the second pipe fitting 2 passes through the lower end of the first pipe fitting 1 and is slidably accommodated within the first pipe fitting 1;

[0040] The upper end of the third pipe fitting 3 passes through the lower end of the second pipe fitting 2 and is slidably accommodated within the second pipe fitting 2;

[0041] Outer fitting 4 is sleeved on the outside of the second fitting 2;

[0042] The first locking assembly 5 is rotatably mounted on the upper end of the outer tube 4; and

[0043] The second locking component 6 is installed on the lower end of the outer pipe 4 and the lower end of the second pipe 2, and is sleeved on the third pipe 3.

[0044] Among them, when the user manually rotates the outer pipe 4, the second locking component 6 locks the second pipe 2 and the third pipe 3 when the outer pipe 4 rotates in the first direction, so that the second pipe 2 and the third pipe 3 cannot move relative to each other. Alternatively, the user can manually operate the outer pipe 4 and the first locking component 5 at the same time, so that the first locking component 5 locks the first pipe 1 and the second pipe 2, so that the first pipe 1 and the second pipe 2 cannot move relative to each other.

[0045] When the user manually rotates the outer tube 4 in the second direction, the second locking component 6 unlocks the second tube 2 and the third tube 3, allowing the second tube 2 and the third tube 3 to move relative to each other to adjust the extension length between them. Alternatively, the user can manually operate the outer tube 4 and the first locking component 5 simultaneously. The first locking component 5 unlocks the first tube 1 and the second tube 2, allowing the first tube 1 and the second tube 2 to move relative to each other to adjust the extension length between them. Thus, by rotating the outer tube 4 and the first locking component 5 individually or simultaneously, or by rotating the outer tube 4 and the first locking component 5 simultaneously, the user can lock or unlock the first tube 1, the second tube 2, and the third tube 3 individually or simultaneously to adjust the extension length between them, thereby adjusting the length of the support leg assembly. It is easy to operate, has a simple and compact structure, is easy to carry, and offers diverse operation to meet the needs of users in various scenarios.

[0046] The first and second directions are opposite, one being clockwise and the other counterclockwise. The first tube 1, second tube 2, and third tube 3 can be made of carbon fiber. After the leg assembly is stowed, the first tube 1 slides into the outer tube 4, the second tube 2 slides into the first tube 1, and the third tube 3 slides into the second tube 2. The outer tube 4, first tube 1, second tube 2, and third tube 3 are all hollow tubes for easy storage and carrying.

[0047] In some optional examples, such as Figure 3 As shown, the first locking assembly 5 includes a first driving member 51, a first spring sleeve 52, and a first pressing member 53 rotatably connected to the outer tube 4. The first driving member 51, the first spring sleeve 52, and the first pressing member 53 are all mounted on the first tube 1. The end of the first pressing member 53 away from the outer tube 4 is located between the first driving member 51 and the first spring sleeve 52. The first pressing member 53 cannot rotate circumferentially relative to the first tube 1. The internal thread of the first driving member 51 is connected to the external thread of the first pressing member 53. The end of the first driving member 51 away from the outer tube 4 is connected to the end of the first spring sleeve 52. The outer diameter of the first spring sleeve 52 gradually decreases from the upper end to the lower end. The first pressing member 53 has a first slot (not shown) that matches the first spring sleeve 52.

[0048] When the first driving member 51 rotates along the first direction, it drives the first spring sleeve 52 to move axially downward, thereby the first pressing member 53 gradually presses the first spring sleeve 52 onto the first pipe 1. At the same time, the outer pipe 4 is rotatably connected to the first locking assembly 5 and can be operated independently. When the first driving member 51 rotates along the second direction, it drives the first spring sleeve 52 to move axially upward, thereby the first pressing member 53 gradually releases the first spring sleeve 52, thereby the first spring sleeve 52 loosens the first pipe 1.

[0049] like Figure 3As shown, the outer diameter of the first sleeve 52 gradually decreases from the top to the bottom. The first clamping member 53 has a first groove that matches the first sleeve 52. The internal thread of the first driving member 51 is connected to the external thread of the first clamping member 53. The end of the first driving member 51 away from the outer tube 4 is connected to one end of the first sleeve 52, and the end of the first clamping member 53 away from the outer tube 4 is located between the first driving member 51 and the first sleeve 52. The first sleeve 52 includes a sleeve body, which is hollow in the middle. The sleeve body can generate elastic deformation and tighten or loosen the first tube 1 by having a plurality of slits extending to the upper end and / or the lower end. The first sleeve 52 can be made of plastic or alloy. The first slot space formed in the first clamping member 53 is fixed. When the first spring sleeve 52 enters the first slot, the outer wall of the first spring sleeve 52 gradually thickens, so the slot wall of the first slot will squeeze the first spring sleeve 52. The gap between the cracks of the squeezed first spring sleeve 52 becomes smaller, so the first spring sleeve 52 hugs the first pipe 1 tightly.

[0050] Continue to refer to Figure 3 and Figure 4 As shown, an axially extending groove and a protrusion (not shown) are provided between the inner wall of the first clamping member 53 and the outer wall of the first pipe 1. Preferably, the inner wall of the first clamping member 53 is axially recessed with a groove, and the outer wall of the first pipe 1 is protruded with a protrusion. The protrusion is slidably accommodated in the groove, so that the first pipe 1 can move axially along the first clamping member 53 but cannot rotate circumferentially. Thus, when the first driving member 51 rotates, it drives the first spring sleeve 52 to move axially up and down, so that the protrusion of the first driving member 51 slides up and down along the groove.

[0051] Continue to refer to Figure 3 and Figure 4 As shown, an annular groove and an annular part are provided between the outer tube 4 and the first clamping member 53. The annular part is rotatably accommodated in the annular groove, which is a simple structure.

[0052] In some embodiments, for the convenience of production and processing, a hand sleeve 41 is fixedly sleeved on the upper end of the outer tube 4. The upper end of the hand sleeve 41 is provided with a first annular member 42 and a second annular member 43. The first annular member 42 is fixedly connected to the upper end of the hand sleeve 41. The lower end of the second annular member 43 is fixedly sleeved on the outer periphery of the first annular member 42. The upper end of the second annular member 43 extends toward the central axis of the second tube 2 with a first limiting part 431. The first limiting part 431 and the first annular member 42 form an annular groove. The lower end of the first pressing member 53 is provided with an annular part 531.

[0053] In order to enhance the feel, the hand grip 41 can be made of silicone, and the first ring part 42 and the second ring part 43 can be made of metal. During the installation process, the ring part 531 is first accommodated in the ring groove, and then the lower end of the second ring part 43 is sleeved on the outside of the first ring part 42 to facilitate installation and production.

[0054] Please refer to Figure 3 and Figure 4 As shown, the second locking assembly 6 includes a second driving member 61, a second spring sleeve 62 sleeved on the third pipe 3, and a second pressing member 63 fixedly connected to the lower end of the second pipe 2. The second driving member 61 is fixedly connected to the lower end of the outer pipe 4. When the outer pipe 4 rotates in the first direction, the lower end of the outer pipe 4 drives the second driving member 61 to rotate. When the second driving member 61 rotates, it drives the second spring sleeve 62 to move axially upward, so that the second pressing member 63 presses the second spring sleeve 62 onto the third pipe 3. When the outer pipe 4 rotates in the second direction, it drives the second driving member 61 to rotate. When the second driving member 61 rotates, it drives the second spring sleeve 62 to move axially downward, so that the second pressing member 63 gradually releases the second spring sleeve 62, so that the second spring sleeve 62 loosens the third pipe 3.

[0055] In some optional examples, continue to refer to Figure 3 and Figure 4 As shown, the outer diameter of the second spring sleeve 62 gradually decreases from the bottom to the top. The second clamping member 63 has a second groove (not shown) that matches the second spring sleeve 62. The internal thread of the second driving member 61 is connected to the external thread of the second clamping member 63. The lower end of the second driving member 61 is connected to the lower end of the second spring sleeve 62, and the end of the second clamping member 63 away from the second tube 2 is located between the second spring sleeve 62 and the second driving member 61. The structure is simple and compact. The second spring sleeve 62 includes a sleeve body, which is hollow in the middle. The sleeve body can produce elastic deformation and tighten or loosen the third tube 3 by having a number of rows of slits extending to the upper end and / or the lower end. The second spring sleeve 62 can be made of plastic or alloy material, and the first spring sleeve can have the same structure as the second spring sleeve 62.

[0056] Continue to refer to Figure 3 and Figure 4 As shown, to prevent excessive rotation of the outer tube 4, which could cause the second drive member 61 to disengage from the second clamping member 63, an anti-disengagement member 44 is also installed on the outer tube 4. One end of the anti-disengagement member 44 extends out of the outer tube 4 and is located above the upper end of the second clamping member 63. When the outer tube 4 rotates in the second direction, the anti-disengagement member 44 and the upper end of the second clamping member 63 gradually approach each other until they abut, thus preventing the outer tube 4 from continuing to rotate. When the outer tube 4 rotates in the first direction, the anti-disengagement member 44 and the upper end of the second clamping member 63 gradually move away from each other. The anti-disengagement member 44 can be a pin, a nut, or a screw.

[0057] In some optional examples, two anti-slip plates are also provided on both sides of the upper end of the second pipe fitting 2; and / or two anti-slip plates (not shown) are also provided on both sides of the upper end of the third pipe fitting 3. The anti-slip plates allow the second pipe fitting 2 to slide with the first pipe fitting 1 and the third pipe fitting 3 with damping, ensuring smooth operation. The anti-slip plates can cooperate with the concave and convex structures of the first pipe fitting 1 and the third pipe fitting 3. In order to achieve stable locking of the first locking assembly 5 and the second locking assembly 6, the first locking assembly 5 and the second locking assembly 6 may also be provided with rubber rings (not shown).

[0058] In summary, the first method of unlocking the outrigger assembly is as follows: First, when the outer tube 4 rotates in the second direction, the lower end of the outer tube 4 drives the second driving member 61 to rotate. At the same time, the first clamping member 53 rotates relative to the outer tube 4. When the second driving member 61 rotates, the internal thread of the second driving member 61 and the external thread of the second clamping member 63 are screwed out to drive the second spring sleeve 62 to move axially downward to drive the second spring sleeve 62 to further extend out of the second slot. The inner wall of the second slot gradually releases the second spring sleeve 62 until the second spring sleeve 62 releases the third tube 3, so that the third tube 3 can slide in the second tube 2, thus unlocking the third tube 3 and the second tube 2.

[0059] Furthermore, when the first driving member 51 rotates in the second direction, the internal thread of the first driving member 51 and the external thread of the first clamping member 53 are screwed out to drive the first spring sleeve 52 to move axially upward to drive the first spring sleeve 52 to extend further out of the first slot. The inner wall of the first slot gradually releases the first spring sleeve 52 until the first spring sleeve 52 releases the first tube 1, so that the first tube 1 can slide in the outer tube 4 so that the second tube 2 can slide in the first tube 1, unlocking the first tube 1 and the second tube 2.

[0060] The second way to unlock the outrigger assembly is for the user to simultaneously actuate the outer tube 4 and the first drive unit 51 to rotate in the second direction, thereby unlocking the first tube 1, the second tube 2 and the third tube 3. The specific process is not described in detail. The unlocking process can also be performed individually or simultaneously.

[0061] This utility model also proposes a tripod, which includes a mounting base and the aforementioned leg assembly. The leg assembly includes a first tube 1 and an outer tube 4. The end of the first tube 1 of the leg assembly away from the outer tube 4 is rotatably connected to the mounting base.

[0062] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A support leg assembly, characterized in that, include: First pipe fitting; The second pipe fitting has its upper end passing through the lower end of the first pipe fitting and being slidably accommodated within the first pipe fitting; The upper end of the third pipe fitting passes through the lower end of the second pipe fitting and is slidably accommodated within the second pipe fitting; An outer fitting, which is sleeved on the outside of the second fitting; A first locking assembly is rotatably mounted on the upper end of the outer tube and sleeved on the first tube. as well as The second locking assembly is installed on the lower end of the outer tube and the lower end of the second tube, and is sleeved on the third tube; When the outer tube rotates in the first direction, the second locking assembly locks the second tube and the third tube, and optionally the first locking assembly locks the first tube and the second tube simultaneously. When the outer tube rotates in the second direction, the second locking assembly unlocks the second tube and the third tube, and optionally the first locking assembly unlocks the first tube and the second tube simultaneously.

2. The outrigger assembly according to claim 1, characterized in that, The first locking assembly includes a first driving member, a first spring sleeve, and a first pressing member rotatably connected to the outer tube. The first driving member, the first spring sleeve, and the first pressing member are all mounted on the first tube. The end of the first pressing member away from the outer tube is located between the first driving member and the first spring sleeve. The first pressing member cannot rotate circumferentially relative to the first tube. The internal thread of the first driving member is connected to the external thread of the first pressing member. The end of the first driving member away from the outer tube is connected to one end of the first spring sleeve. The outer diameter of the first spring sleeve gradually decreases from the upper end to the lower end. The first pressing member has a first groove that matches the first spring sleeve. When the first driving member rotates along the first direction, it drives the first spring sleeve to move axially downward, so that the first pressing member presses the first spring sleeve onto the first pipe.

3. The outrigger assembly according to claim 2, characterized in that, An axially extending groove and a protrusion are provided between the inner wall of the first clamping member and the outer wall of the first pipe. The protrusion is slidably accommodated in the groove, so that the first clamping member can move axially along the first pipe but cannot rotate circumferentially.

4. The outrigger assembly according to claim 2, characterized in that, An annular groove and an annular portion are provided between the outer tube and the first clamping member, and the annular portion is rotatably accommodated within the annular groove.

5. The outrigger assembly according to claim 4, characterized in that, The upper end of the outer tube is fixedly fitted with a hand sleeve. The upper end of the hand sleeve is provided with a first annular part and a second annular part. The first annular part is fixedly connected to the upper end of the hand sleeve. The lower end of the second annular part is fixedly fitted around the outer periphery of the first annular part. The upper end of the second annular part extends toward the central axis of the second tube with a first limiting part. The first limiting part and the first annular part form the annular groove. The lower end of the first clamping member is surrounded by the annular part.

6. The outrigger assembly according to any one of claims 1 to 5, characterized in that, The second locking assembly includes a second driving member, a second spring sleeve sleeved on the third tube, and a second pressing member fixedly connected to the lower end of the second tube. The second driving member is fixedly connected to the lower end of the outer tube. When the outer tube rotates in the first direction, it drives the second driving member to rotate, thereby causing the second spring sleeve to move axially upward, so that the second pressing member presses the second spring sleeve on the third tube.

7. The outrigger assembly according to claim 6, characterized in that, The outer diameter of the second sleeve gradually decreases from the bottom to the top. The second clamping member has a second groove that matches the second sleeve on the side away from the second tube. The internal thread of the second driving member is connected to the external thread of the second clamping member. The lower end of the second driving member is connected to the lower end of the second sleeve. The lower end of the second clamping member is located between the second sleeve and the second driving member.

8. The outrigger assembly according to claim 1, characterized in that, The first and second pipe fittings can move axially but cannot rotate circumferentially; and / or The second and third pipe fittings can move axially but cannot rotate circumferentially.

9. The outrigger assembly according to claim 1, characterized in that, The upper end of the second pipe fitting is also provided with two anti-slip plates on both sides; and / or The upper end of the third pipe fitting is also provided with two anti-slip plates on both sides.

10. A tripod, characterized in that, The system includes a mounting base and a leg assembly as described in any one of claims 1 to 9, the leg assembly comprising a first tube and an outer tube, the end of the first tube remote from the outer tube being rotatably connected to the mounting base.

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