WO2019183850A1 - 一种云台的伸缩臂以及用于图像采集设备的云台 - Google Patents
一种云台的伸缩臂以及用于图像采集设备的云台 Download PDFInfo
- Publication number
- WO2019183850A1 WO2019183850A1 PCT/CN2018/080940 CN2018080940W WO2019183850A1 WO 2019183850 A1 WO2019183850 A1 WO 2019183850A1 CN 2018080940 W CN2018080940 W CN 2018080940W WO 2019183850 A1 WO2019183850 A1 WO 2019183850A1
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- WIPO (PCT)
- Prior art keywords
- telescopic
- abutting
- abutting wall
- wall
- connecting arm
- Prior art date
Links
- 238000003825 pressing Methods 0.000 claims description 31
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
Definitions
- the present application relates to a gimbal, in particular to a gimbal structure for supporting an image acquisition device.
- the PTZ is a support structure that is widely used in image acquisition devices (cameras, cameras, etc.) to provide stable support for image acquisition devices.
- Some pan/tilt will have a telescopic structure, so that the pan/tilt has length adjustment function.
- the type is telescopic through the plane, the locking and positioning mechanism is complicated in design, and it is difficult to manufacture and assemble.
- the present application mainly provides a telescopic arm of a pan/tilt head and a pan/tilt head for an image capturing device using the telescopic arm.
- an embodiment provides a telescopic arm of a pan/tilt head, including:
- a first connecting arm having a first abutting wall disposed along a telescopic direction of the telescopic arm and a through hole penetrating the first abutting wall, the first abutting wall being at least partially recessed along the edge a first guiding portion disposed in the telescopic direction;
- the second connecting arm has a second abutting wall that cooperates with the first abutting wall, and a telescopic groove that extends through the second abutting wall, the telescopic groove is disposed along the telescopic direction,
- the first abutting wall and the second abutting wall are stacked, and the second abutting wall at least partially protrudes to form a second guiding portion that cooperates with the first guiding portion, so that the first abutting wall and the second abutting wall
- the abutting walls can be close to and away from each other in a direction defined by the first guiding portion;
- the end of the first threaded member penetrates the first abutting wall and the second abutting wall from the through hole and the telescopic groove;
- the pressing block is disposed on a side of the second abutting wall facing away from the first abutting wall, and the end of the screw member is screwed with the pressing block, and the first position can be adjusted by adjusting the distance between the screw member and the pressing block
- the connecting arm and the second connecting arm are locked and released.
- the first abutting wall includes a first abutting plane
- the first guiding portion is located at two sides of the first abutting plane
- the second abutting wall has a first Abutting the second abutting planes of the plane stack
- the second guiding portions are located at two sides of the second abutting plane.
- the first guiding portion has a groove having a V-shaped, U-shaped, trapezoidal, wedge-shaped or curved cross section
- the second guiding portion has a V-shaped cross section and a U shape , trapezoidal, wedge or curved protrusions.
- the second connecting arm further includes two second side walls and a cover plate, and the two second side walls are disposed on two sides of the second abutting wall, the cover plate Mounted on the second side wall, the second abutting wall, the second side wall and the cover plate are enclosed as a briquetting cavity, and the pressing block is received in the briquetting cavity.
- a pressure guiding guide is provided in the cavity, and the pressing block guiding portion restricts movement of the pressing block in the telescopic direction.
- two opposite side walls of the compact receiving cavity form a guide for the pressing block to move the pressing block in the telescopic direction.
- the cover plate is detachably mounted on the second side wall.
- the first connecting arm has a telescopic cavity
- the first abutting wall is a cavity wall of the telescopic cavity
- the second connecting arm is inserted into the telescopic cavity
- the second connecting arm The second abutting wall is disposed corresponding to the first abutting wall.
- the telescopic groove is a waist hole.
- an embodiment provides a pan/tilt for an image capture device, the pan/tilt having the telescopic arm according to any of the above, wherein the pan/tilt has a telescopic adjustment function.
- the first abutting wall of the first connecting arm and the second abutting wall of the second connecting arm can be stacked, and the locking and releasing adjustment can be realized by the screw member and the pressing block.
- the first guiding portion and the second guiding portion adopt a concave and convex structure, which can not only realize rapid self-positioning, but also guide the first connecting arm and the second connecting arm to move according to the set side, and the concave and convex structures can be
- the first abutting wall and the second abutting wall provide more abutting faces disposed in different directions, thereby increasing the contact faces of the first abutting wall and the second abutting wall in the locked state, improving the first connecting arm and The second connecting arm locks the effect.
- FIG. 1 is an exploded view of a telescopic arm in an embodiment of the present application
- FIG. 2 is a schematic structural view of a second connecting arm (omission of a cover plate) and a pressing block in an embodiment of the present application;
- FIG. 3 is a schematic side view of a telescopic arm in an embodiment of the present application.
- Figure 4 is a cross-sectional view taken along line A-A of Figure 3 .
- the first embodiment provides a telescopic arm of a pan/tilt, which can realize telescopic adjustment and bring more dimensional changes to the gimbal.
- the telescopic arm includes a first connecting arm 100 , a second connecting arm 200 , a screw 300 , and a pressing block 400 .
- the first connecting arm 100 has a first abutting wall 110 disposed along a telescopic direction of the telescopic arm and a through hole 113 penetrating the first abutting wall 110. This through hole 113 is used for the screw member 300 to pass through.
- the first abutting wall 110 is at least partially recessed to form a first guiding portion 111 disposed along the telescopic direction.
- the second connecting arm 200 has a second abutting wall 210 that cooperates with the first abutting wall 110 and a telescopic groove 213 that extends through the second abutting wall 210 .
- the telescopic groove 213 is disposed along the telescopic direction of the telescopic arm, and may be, for example, a waist hole.
- the telescopic groove 213 is mainly used for the screw member 300 to move relative to the second connecting arm 200 in the telescopic groove 213, thereby changing the locking positions of the first connecting arm 100 and the second connecting arm 200.
- the second abutting wall 210 at least partially protrudes to form a second guiding portion 211 that cooperates with the first guiding portion 111, so that the first abutting wall 110 and the second abutting wall 210 can be defined along the first guiding portion 111. Approaching and moving away from each other to achieve the extension and shortening functions of the telescopic arms.
- the first abutting wall 110 and the second abutting wall 210 can be stacked and can be separated from each other and close to each other.
- the end of the screw member 300 penetrates the first abutting wall 110 and the second abutting wall 210 from the through hole 113 and the telescopic groove 213.
- the screw member 300 may have a structure such as a bolt or a screw.
- the pressing block 400 is disposed on a side of the second abutting wall 210 facing away from the first abutting wall 110. The end of the screw member 300 is screwed to the pressing block 400, that is, the head end of the screw member 300 is located at the first abutting wall 110.
- first abutting wall 110 and the second abutting wall 210 are locked and cannot move because of the frictional force. Conversely, the first abutment wall 110 and the second abutment wall 210 are released.
- the first guiding portion 111 and the second guiding portion 211 adopt a concave and convex structure, which can not only realize rapid self-positioning, but also the first guiding portion 111 and the first assembly portion during assembly.
- the two guiding portions 211 can be quickly aligned, so that the first abutting wall 110 and the second abutting wall 210 can be automatically adjusted to a proper position, thereby moving the first connecting arm 100 and the second connecting arm 200 according to the set side.
- the recess and the protrusion structure can provide more abutting surfaces disposed in different directions for the first abutting wall 110 and the second abutting wall 210, thereby increasing the first abutting wall 110 and the second abutting in the locked state.
- the contact faces of the wall 210 and the contact faces are different directions, so that the friction between the first abutting wall 110 and the second abutting wall 210 is more difficult to overcome, further improving the first connecting arm 100 and the second connecting arm 200 lock effect.
- first guiding portion 111 and the second guiding portion 211 may be integrally formed by the first abutting wall 110 and the second abutting wall 210, or may be only the first abutting wall 110 and the second abutting wall. A part of 210 is formed.
- the first abutting wall 110 includes a first abutting plane 112 , and the first guiding portion 111 is located at two sides of the first abutting plane 112 .
- the second abutting wall 210 has a second abutting plane 212 disposed on the first abutting plane 112 , and the second guiding portion 211 is located at two sides of the second abutting plane 212 .
- first guiding portion 111 can also be disposed on the first abutting plane 112, as is the second guiding portion 211.
- the first guiding portion 111 has a groove having a V-shaped, U-shaped, trapezoidal, wedge-shaped or curved cross section
- the second guiding portion 211 has a horizontal direction.
- the cross section is a V-shaped, U-shaped, trapezoidal, wedge-shaped or curved protrusion.
- the first guiding portion 111 and the second guiding portion 211 may also have other shapes of concave and convex structures.
- the cross section referred to herein refers to a section which is cut off by a plane perpendicular to the direction of expansion and contraction.
- the second connecting arm 200 further includes two second sidewalls 220 and a cover plate 230 , and the two second sidewalls 220 are disposed in the second
- the cover plate 230 is mounted on the second side wall 220, so that the second abutting wall 210, the second side wall 220 and the cover plate 230 surround the briquetting receiving cavity, and the pressing block 400 is accommodated.
- the pressure block 400 is placed in the pressure receiving cavity to prevent the movement of the pressure block 400.
- the cavity may be provided with a block guide that restricts the block 400 from moving in the telescopic direction.
- the two opposite sidewalls 251 of the clamping block 400 form a guide for the pressing block 400 , and the distance between the two opposite sidewalls 251 is slightly larger than The pressing block 400, and the space defined by the two opposite side walls 251 coincide with the direction of expansion and contraction, thereby moving the pressing block 400 in the telescopic direction.
- guiding structures may be used to guide the pressing block 400, such as a guide rail or the like.
- the cover plate 230 is detachably mounted on the second side wall 220.
- the first connecting arm 100 has a telescopic cavity 120
- the first abutting wall 110 is a cavity wall of the telescopic cavity 120
- the second connecting arm 200 is inserted into the telescopic cavity 120.
- the second abutting wall 210 of the second connecting arm 200 is disposed corresponding to the first abutting wall 110.
- This embodiment provides a pan/tilt for an image acquisition device.
- the image acquisition device can be a camera or a video camera or the like.
- the pan/tilt has a telescopic arm as shown in Embodiment 1, so that the pan/tilt has a telescopic adjustment function to adjust the position of the image capturing device mounted on the pan/tilt.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Accessories Of Cameras (AREA)
Abstract
一种云台的伸缩臂和用于图像采集设备的云台，其第一连接臂的第一抵接壁和第二连接臂的第二抵接壁能够层叠设置，并利用螺纹件和压块实现锁定和释放的调整。而且其第一导向部和第二导向部采用凹陷和凸起结构，不仅能实现快速自定位，导向第一连接臂和第二连接臂按照设定方移动，而且该凹陷和凸起结构能够为第一抵接壁和第二抵接壁提供更多沿不同方向设置的抵接面，从而在锁定状态下增加第一抵接壁和第二抵接壁的接触面，提高第一连接臂和第二连接臂锁定效果。
Description
本申请涉及一种云台，尤其是用于支撑图像采集设备的云台结构。
背景技术
云台是一种被广泛应用到图像采集设备（相机、摄像机等）上的支撑结构，其用于为图像采集设备提供稳定的支撑。某些云台会具有伸缩结构，从而使云台具备长度调节功能。这种云台通常所使用的伸缩调节机构分为两种：一种是圆柱型伸缩，类似于天线的伸缩结构，此结构锁紧和定位不够稳定，加工精度要求高，效果不理想；另一种是通过平面来伸缩，锁紧和定位机构设计复杂，制造和装配难度大。
本申请主要提供一种云台的伸缩臂和一种采用了这种伸缩臂的用于图像采集设备的云台。
根据本申请的一方面，一种实施例中提供一种云台的伸缩臂，包括：
第一连接臂，所述第一连接臂具有沿伸缩臂的伸缩方向设置的第一抵接壁和贯穿所述第一抵接壁的通孔，所述第一抵接壁至少一部分凹陷形成沿所述伸缩方向设置的第一导向部；
第二连接臂，所述第二连接臂具有与第一抵接壁配合的第二抵接壁和贯穿所述第二抵接壁的伸缩槽，所述伸缩槽沿所述伸缩方向设置，所述第一抵接壁和第二抵接壁层叠设置，所述第二抵接壁至少一部分凸起形成与所述第一导向部配合的第二导向部，使第一抵接壁和第二抵接壁能够沿第一导向部限定的方向相互靠近和远离；
螺纹件，所述第一螺纹件的末端从所述通孔和伸缩槽贯穿第一抵接壁和第二抵接壁；
以及压块，所述压块设置在第二抵接壁背离第一抵接壁的一侧，所述螺纹件的末端与压块螺接，通过调节螺纹件与压块的距离能够将第一连接臂和第二连接臂锁紧和释放。
作为所述伸缩臂的进一步改进，所述第一抵接壁包括第一抵接平面，所述第一导向部位于第一抵接平面的两侧，所述第二抵接壁具有与第一抵接平面层叠设置的第二抵接平面，所述第二导向部位于第二抵接平面的两侧。
作为所述伸缩臂的进一步改进，所述第一导向部具有横截面为V形、U形、梯形、楔形或弧形的凹槽，所述第二导向部具有横截面为V形、U形、梯形、楔形或弧形的凸起。
作为所述伸缩臂的进一步改进，所述第二连接臂还包括两个第二侧壁和盖板，两个所述第二侧壁设置在第二抵接壁的两侧，所述盖板安装在第二侧壁上，使所述第二抵接壁、第二侧壁和盖板围成压块容置腔，所述压块容置于所述压块容置腔内。
作为所述伸缩臂的进一步改进，所述腔体内设置有压块导向部，所述压块导向部限制压块沿伸缩方向移动。
作为所述伸缩臂的进一步改进，所述压块容置腔上两个相对侧壁对压块形成导向，使压块沿伸缩方向移动。
作为所述伸缩臂的进一步改进，所述盖板可拆卸式地安装在第二侧壁上。
作为所述伸缩臂的进一步改进，所述第一连接臂具有伸缩腔，所述第一抵接壁为伸缩腔的腔壁，所述第二连接臂插入伸缩腔内，所述第二连接臂的第二抵接壁与第一抵接壁对应设置。
作为所述伸缩臂的进一步改进，所述伸缩槽为腰型孔。
根据本申请的一方面，一种实施例中提供一种用于图像采集设备的云台，所述云台具有如上述任一项所述的伸缩臂，使所述云台具有伸缩调节功能。
依据上述实施例的伸缩臂，其第一连接臂的第一抵接壁和第二连接臂的第二抵接壁能够层叠设置，并利用螺纹件和压块实现锁定和释放的调整。而且其第一导向部和第二导向部采用凹陷和凸起结构，不仅能实现快速自定位，导向第一连接臂和第二连接臂按照设定方移动，而且该凹陷和凸起结构能够为第一抵接壁和第二抵接壁提供更多沿不同方向设置的抵接面，从而在锁定状态下增加第一抵接壁和第二抵接壁的接触面，提高第一连接臂和第二连接臂锁定效果。
图1为本申请一种实施例中伸缩臂的分解图；
图2为本申请一种实施例中第二连接臂（省略盖板）和压块的结构示意图；
图3为本申请一种实施例中伸缩臂侧面示意图；
图4为沿图3中A-A线的剖视图。
具体实施方式
下面通过具体实施方式结合附图对本申请作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接（联接）。
实施例1：
本实施例1提供一种云台的伸缩臂，该伸缩臂可实现伸缩调整，给云台带来更多的尺寸变化。
请参考图1-4，该伸缩臂包括第一连接臂100、第二连接臂200、螺纹件300以及压块400。
该第一连接臂100具有沿伸缩臂的伸缩方向设置的第一抵接壁110和贯穿该第一抵接壁110的通孔113。该通孔113用于螺纹件300穿过。该第一抵接壁110至少一部分凹陷形成沿伸缩方向设置的第一导向部111。
该第二连接臂200具有与第一抵接壁110配合的第二抵接壁210和贯穿该第二抵接壁210的伸缩槽213。该伸缩槽213沿伸缩臂伸缩方向设置，例如可以为腰型孔。该伸缩槽213主要用于螺纹件300能够在伸缩槽213内相对第二连接臂200移动，从而改变第一连接臂100和第二连接臂200的锁定位置。该第二抵接壁210至少一部分凸起形成与第一导向部111配合的第二导向部211，使第一抵接壁110和第二抵接壁210能够沿第一导向部111限定的方向相互靠近和远离，从而实现伸缩臂的伸长和缩短功能。
该第一抵接壁110和第二抵接壁210能够层叠设置，并能够相互远离和靠近。该螺纹件300的末端从通孔113和伸缩槽213贯穿第一抵接壁110和第二抵接壁210。该螺纹件300可采用螺栓或螺钉等结构。该压块400设置在第二抵接壁210背离第一抵接壁110的一侧，该螺纹件300的末端与压块400螺接，即螺纹件300的头端位于第一抵接壁110的一侧，而其末端穿过第一抵接壁110和第二抵接壁210后与压块400螺接。通过调节螺纹件300与压块400的距离，能够调整螺纹件300和压块400对第一抵接壁110和第二抵接壁210的夹紧力，从而完成对第一连接臂100和第二连接臂200锁紧和释放。
举例来说，当螺纹件300与压块400之间距离缩小到设定距离，将会分别对第一抵接壁110和第二抵接壁210施加压紧力，从而促使第一抵接壁110和第二抵接壁210贴合，此时在摩擦力的作用下，该第一抵接壁110和第二抵接壁210将被锁定，无法移动。反之，该第一抵接壁110和第二抵接壁210则被释放。
进一步地，本实施例采用的这种导向结构中，该第一导向部111和第二导向部211采用凹陷和凸起结构，不仅能实现快速自定位，在装配时第一导向部111和第二导向部211可以迅速对齐，使得第一抵接壁110和第二抵接壁210能够自动调整到合理位置，进而使第一连接臂100和第二连接臂200按照设定方移动。而且该凹陷和凸起结构能够为第一抵接壁110和第二抵接壁210提供更多沿不同方向设置的抵接面，从而在锁定状态下增加第一抵接壁110和第二抵接壁210的接触面，而且接触面是不同方向的，使得第一抵接壁110和第二抵接壁210之间摩擦力更难以克服，进一步地提高第一连接臂100和第二连接臂200锁定效果。
进一步地，该第一导向部111和第二导向部211可以是由第一抵接壁110和第二抵接壁210整体形成，也可以仅是第一抵接壁110和第二抵接壁210一部分变化而形成。
请参考图1，一种实施例中，该第一抵接壁110包括第一抵接平面112，该第一导向部111位于第一抵接平面112的两侧。对应地，该第二抵接壁210具有与第一抵接平面112层叠设置的第二抵接平面212，该第二导向部211位于第二抵接平面212的两侧。
除此之外，该第一导向部111也可设置在第一抵接平面112上，第二导向部211亦是如此。
进一步地，请参考图1和4，一种实施例中，该第一导向部111具有横截面为V形、U形、梯形、楔形或弧形的凹槽，该第二导向部211具有横截面为V形、U形、梯形、楔形或弧形的凸起。当然，在其他实施例中，该第一导向部111和第二导向部211也可以具有其他形状的凹陷和凸起结构。需要指出的是，这里所说的横截面是指采用与伸缩方向垂直的平面所截断后的截面。
进一步地，请参考图1、2和4，一种实施例中，该第二连接臂200还包括两个第二侧壁220和盖板230，该两个第二侧壁220设置在第二抵接壁210的两侧，盖板230安装在第二侧壁220上，使第二抵接壁210、第二侧壁220和盖板230围成压块容置腔，该压块400容置于压块容置腔内，用以对压块400进行限位，避免其四处移动。
进一步地，该腔体内可设置有压块导向部，该压块导向部限制压块400沿伸缩方向移动。
请参考图1、2和4，一种实施例中，该压块400容置腔上两个相对侧壁251对压块400形成导向，该两个相对的侧壁251之间的距离略大于压块400，并且该两个相对的侧壁251限定的空间与伸缩方向一致，从而使压块400沿伸缩方向移动。
此外，也可以采用其他导向结构对压块400进行导向限位，例如导轨等。
为了便于压块400的装拆和调整，请参考图1、2和4，一种实施例中，该盖板230可拆卸式地安装在第二侧壁220上。
进一步地，请参考图1，第一连接臂100具有伸缩腔120，该第一抵接壁110为伸缩腔120的腔壁。该第二连接臂200插入伸缩腔120内，该第二连接臂200的第二抵接壁210与第一抵接壁110对应设置。
实施例2
本实施例提供了一种用于图像采集设备的云台。该图像采集设备可以为相机或摄像机等。该云台具有如实施例1所示的伸缩臂，从而使云台具有伸缩调节功能，以便调整安装在云台上的图像采集设备位置。
以上应用了具体个例对本申请进行阐述，只是用于帮助理解本申请，并不用以限制本申请。对于本领域的一般技术人员，依据本申请的思想，可以对上述具体实施方式进行变化。
Claims (10)
- 一种云台的伸缩臂,其特征在于，包括：第一连接臂，所述第一连接臂具有沿伸缩臂的伸缩方向设置的第一抵接壁和贯穿所述第一抵接壁的通孔，所述第一抵接壁至少一部分凹陷形成沿所述伸缩方向设置的第一导向部；第二连接臂，所述第二连接臂具有与第一抵接壁配合的第二抵接壁和贯穿所述第二抵接壁的伸缩槽，所述伸缩槽沿所述伸缩方向设置，所述第一抵接壁和第二抵接壁层叠设置，所述第二抵接壁至少一部分凸起形成与所述第一导向部配合的第二导向部，使第一抵接壁和第二抵接壁能够沿第一导向部限定的方向相互靠近和远离；螺纹件，所述第一螺纹件的末端从所述通孔和伸缩槽贯穿第一抵接壁和第二抵接壁；以及压块，所述压块设置在第二抵接壁背离第一抵接壁的一侧，所述螺纹件的末端与压块螺接，通过调节螺纹件与压块的距离能够将第一连接臂和第二连接臂锁紧和释放。
- 如权利要求1所述的伸缩臂，其特征在于，所述第一抵接壁包括第一抵接平面，所述第一导向部位于第一抵接平面的两侧，所述第二抵接壁具有与第一抵接平面层叠设置的第二抵接平面，所述第二导向部位于第二抵接平面的两侧。
- 如权利要求1所述的伸缩臂，其特征在于，所述第一导向部具有横截面为V形、U形、梯形、楔形或弧形的凹槽，所述第二导向部具有横截面为V形、U形、梯形、楔形或弧形的凸起。
- 如权利要求1-3任一项所述的伸缩臂，其特征在于，所述第二连接臂还包括两个第二侧壁和盖板，两个所述第二侧壁设置在第二抵接壁的两侧，所述盖板安装在第二侧壁上，使所述第二抵接壁、第二侧壁和盖板围成压块容置腔，所述压块容置于所述压块容置腔内。
- 如权利要求4所述的伸缩臂，其特征在于，所述腔体内设置有压块导向部，所述压块导向部限制压块沿伸缩方向移动。
- 如权利要求4所述的伸缩臂，其特征在于，所述压块容置腔上两个相对侧壁对压块形成导向，使压块沿伸缩方向移动。
- 如权利要求4所述的伸缩臂，其特征在于，所述盖板可拆卸式地安装在第二侧壁上。
- 如权利要求4所述的伸缩臂，其特征在于，所述第一连接臂具有伸缩腔，所述第一抵接壁为伸缩腔的腔壁，所述第二连接臂插入伸缩腔内，所述第二连接臂的第二抵接壁与第一抵接壁对应设置。
- 如权利要求4所述的伸缩臂，其特征在于，所述伸缩槽为腰型孔。
- 一种用于图像采集设备的云台，其特征在于，所述云台具有如权利要求1-9任一项所述的伸缩臂，使所述云台具有伸缩调节功能。
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