WO2019000453A1

WO2019000453A1 - Extension rod and handheld cradle head assembly

Info

Publication number: WO2019000453A1
Application number: PCT/CN2017/091320
Authority: WO
Inventors: 贝世猛
Original assignee: 深圳市大疆灵眸科技有限公司
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2019-01-03
Also published as: CN108700254A; CN108700254B

Abstract

An extension rod (100) that is used for being detachably mounted on a handheld member (200) of a handheld cradle head assembly (300), the extension rod (100) comprising a rod body (10), an extension assembly (20) and a support assembly (30). The rod body (10) comprises an extension end (12) and a support end (14), which face away from each other. The extension assembly (20) may be detachably mounted to the extension end (10), and the extension assembly (20) is used for connection with the handheld member (200). The support assembly (30) is mounted to the support end (14), and the support assembly (30) may be selectively switched between being expanded and being folded; when the support assembly (30) is expanded, the support assembly (30) is used to support the rod body (10); when the support assembly (30) is folded, the support assembly (30) is used to extend the rod body (10). Also disclosed is a handheld cradle head assembly (300). The extension rod elevates the capture position of the handheld cradle head assembly, and may free the hands of a user, thereby achieving the taking of selfies, time-lapse photography, tripod photography and so on.

Description

Extension pole and pan/tilt handheld components

Technical field

The present invention relates to the field of consumer electronics, and in particular to an extension pole and a pan/tilt hand assembly.

Background technique

The handheld portion of the existing PTZ handheld component has a short length, which is not convenient for the PTZ handheld component to take a higher-altitude picture.

Summary of the invention

Embodiments of the present invention provide an extension pole and a pan/tilt hand assembly.

The extension rod of the embodiment of the invention is used for detachably mounting on a hand piece of a pan-tilt hand-held assembly, the extension rod comprising a rod body, an extension assembly and a support assembly. The rod body includes opposite end ends and a support end. The extension assembly is detachably mountable to the extension end, the extension assembly for attachment to the handpiece. The support assembly is mounted at the support end, the support assembly is selectively switchable between deployment and folding, the support assembly is for supporting the shaft when the support assembly is deployed; The support assembly is used to extend the shaft when the assembly is folded.

The pan/tilt hand-held assembly of the embodiment of the present invention includes a hand piece and the extension rod of the above embodiment. The hand piece includes two connecting portions in the shape of a rod. The number of the extension rods is two, and the two extension rods are respectively connected to the two connecting portions.

When the pan/tilt hand-held component of the embodiment of the present invention is installed with an extension pole, on the one hand, the extension pole increases the length of the hand-held portion of the pan-tilt hand-held component to improve (extend) the shooting position of the pan-tilt hand-held component; On the other hand, if the handheld component of the PTZ is used, or if the self-timer, time-lapse shooting, tripod shooting mode, etc. are required, the user can hold the PTZ handheld component, the support component of the extension bar can be placed on the ground, the desktop, Or on a medium such as a countertop, thereby freeing the user's hands, achieving self-timer, time-lapse shooting, tripod shooting, and the like.

The additional aspects and advantages of the embodiments of the present invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic plan view of a pan/tilt handheld assembly in accordance with some embodiments of the present invention.

2 is a schematic plan view of a pan-tilt handheld assembly in accordance with some embodiments of the present invention.

3 is a plan view of an extension rod of some embodiments of the present invention.

4 is a cross-sectional view of an extension rod in accordance with some embodiments of the present invention.

Figure 5 is an exploded perspective view of an extension rod in accordance with some embodiments of the present invention.

6 is a cross-sectional view of an extension rod of some embodiments of the present invention.

Figure 7 is an enlarged schematic view of VII of Figure 6.

Figure 8 is an exploded perspective view of an extension rod in accordance with some embodiments of the present invention.

9 is a cross-sectional view of an extension rod in accordance with some embodiments of the present invention.

Fig. 10 is an enlarged schematic view showing the portion X of Fig. 9.

Figure 11 is a perspective view showing the structure of an extension rod according to some embodiments of the present invention.

Figure 12 is an exploded perspective view of an extension rod in accordance with some embodiments of the present invention.

Figure 13 is a perspective view showing the structure of an extension rod according to some embodiments of the present invention.

Figure 14 is an exploded perspective view of an extension rod in accordance with some embodiments of the present invention.

15 is a schematic plan view of a pan/tilt handheld assembly in accordance with some embodiments of the present invention.

16 is a perspective view of a three-dimensional structure of a PTZ handheld component according to some embodiments of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected in one piece; may be mechanically connected, or may be electrically connected or may communicate with each other; either directly or through The medium is indirectly connected, and may be an internal connection of two elements or an interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

Referring to FIG. 1 to FIG. 4 , an embodiment of the present invention provides an extension rod 100 for detachably mounting on the hand piece 200 of the platform handheld assembly 300 . The extension rod 100 includes a shaft 10, an extension assembly 20, and a support assembly 30. The shaft 10 includes opposite end ends 12 and support ends 14. The extension assembly 20 is detachably mounted to the extension end 12 for attachment to the handpiece 200. The support assembly 30 is mounted to the support end 14, which is selectively switchable between deployment and folding, and the support assembly 30 is used to support the shaft 10 when the support assembly 30 is deployed. The support assembly 30 is used to extend the shaft 10 when the support assembly 30 is folded.

In particular, when the support assembly 30 is deployed, the support assembly 30 can be used with the hand piece 200 and the shaft 10 to enable the hand piece 200 to be placed on the outside (eg, on the ground, on a table top, or other platform). When the support assembly 30 is folded, the support assembly 30 can have the same function as the shaft 10, extending the length of the shaft 10.

When the pan/tilt handheld assembly 300 of the embodiment of the present invention is mounted with the extension pole 100, on the one hand, the extension pole 100 increases the length of the handheld portion of the pan-tilt handheld assembly 300 to enhance (extend) the pan-tilt handheld assembly 300. On the other hand, when the PTZ handheld component 300 is used up, or if the user needs to hold the PTZ handheld component 300 without taking the self-photographing, time-lapse shooting, tripod shooting mode, etc., the support component of the extension bar 100 is unfolded. It can be placed on the ground, desktop, or countertop, so that you can free your hands, self-timer, time-lapse shooting, tripod shooting, and more.

Referring to FIGS. 1 and 2 , the handheld pan/tilt assembly 300 of the embodiment of the present invention includes a hand piece 200 and two extension rods 100 mounted on the hand piece 200 .

The hand piece 200 includes a plurality of connecting portions 60 in the shape of a rod, and the connecting portion 60 may include two at the ends of the hand piece 200 The end portion 62 or/and includes two shoulders 64 between the ends of the hand piece 200. The connecting portion 60 may be provided with a connecting thread. Specifically, the connecting thread on the connecting portion 60 may be an internal thread or an external thread.

Referring to FIGS. 3-5 , the extension rod 100 of the embodiment of the present invention includes a rod body 10 , an extension assembly 20 , and a support assembly 30 .

The shaft 10 includes opposite end ends 12 and support ends 14. The extension end 12 can be provided with a thread. The support end 14 is provided with a support receiving hole 142, and the support receiving hole 142 is provided with an internal thread. In the present embodiment, the carbon tube of the rod body 10 is hollow, and the rod body 10 has an annular shape in the cross section. In this case, the thread of the extension end 12 may be an external thread or an internal thread. Of course, the rod body 10 may also have a solid structure in the middle and a hollow structure at both ends. At this time, the thread of the extension end 12 may be an external thread or an internal thread. Alternatively, the entire rod 10 is of a solid construction, in which case the threads of the extension end 12 are externally threaded.

The extension assembly 20 is detachably mounted to the extension end 12 for connection to the handpiece 200 of the pan-tilt handheld assembly 300. In some embodiments, the extension assembly 20 can include an extension body and threads disposed on the extension body. Specifically, when the connecting portion 60 is provided with an internal thread, the extension assembly 20 is provided with an external thread (as shown in FIG. 3), and the external thread of the extension assembly 20 is screwed with the internal thread of the connecting portion 60 to mount the extension rod 100. On the handpiece 200. When the connecting portion 60 is provided with an external thread, the extension assembly 20 is provided with an internal thread (as shown in FIGS. 4 and 5), and the internal thread of the extension assembly 20 is screwed with the external thread of the connecting portion 60 to mount the extension rod 100. On the handpiece 200.

The support assembly 30 is mounted to the support end 14, which is selectively switchable between deployment and folding, and the support assembly 30 is used to support the shaft 10 and the handpiece 200 when the support assembly 30 is deployed. When the support assembly 30 is folded, the support assembly 30 is used to extend the shaft 10, that is, the support assembly 30 can have the effect of extending the length of the shaft 10.

Referring to FIG. 5, the support assembly 30 includes a connector 31 and a plurality of support legs 32.

The connector 31 includes a rod connection end 312 and a leg connection end 314. The rod connecting end 312 is provided with an external thread, and the external thread of the rod connecting end 312 is screwed with the internal thread of the supporting end 14 to mount the connecting head 31 in the supporting receiving hole 142 of the rod body 10. The leg connecting end 314 is provided with a leg receiving groove 3142 which divides the leg connecting end 314 into two parts. The leg connecting end 314 is provided with a plurality of leg mounting holes 3144 which extend through the leg connecting end 314 to communicate with the leg receiving groove 3142.

One end of the support leg 32 is rotatably coupled to the connector 31 such that the support leg 32 can be unfolded and folded relative to the shaft 10, and the other end of the support leg 32 can be in contact with the outside to enable the support leg 32 to support the shaft 10 when deployed. Specifically, each of the support legs 32 includes a leg body 320, and a rotating portion 322 and a contact portion 324 disposed at opposite ends of the leg body 320. The rotating portion 322 is provided with a leg coupling hole 3220, and the rotating portion 322 is received in the leg receiving groove 3142, and is passed through the leg mounting hole 3144 and the leg coupling hole 3220 by bolts (or pins) to rotatably mount the rotating portion 322 on the leg. The terminal 314 is coupled and the support leg 32 is expandable and foldable relative to the shaft 10. The contact portion 324 is for contact with the outside (eg, ground, table top, platform, etc.) to enable the support leg 32 to support the shaft 10 and the handpiece 200. The leg body 320 of each of the support legs 32 has an arcuate cross section, and when the plurality of support legs 32 are relatively folded, the plurality of support legs 32 form a columnar structure.

When the pan/tilt hand assembly 300 of the embodiment of the present invention is used to extend the rod 100, on the one hand, the extension rod 100 is increased. The length of the handheld portion of the PTZ handheld component 300 is increased to increase (extension) the camera position of the PTZ handheld component 300; on the other hand, the PTZ handheld component 300 is used, or a self-timer or delay is required. In the case of shooting, tripod shooting mode, etc. without the need for the user to hold the pan-tilt handheld component 300, the support assembly of the extension bar 100 can be placed on the ground, the desktop, or the countertop, etc., thereby freeing the user's hands, achieving self-timer, and delay. Time shooting, tripod shooting, etc.

Referring to FIG. 1 , FIG. 6 and FIG. 8 , in some embodiments, the connecting portion 60 of the above embodiment is two end portions 62 located at two ends of the hand piece 200 , and the extending end 12 is provided with an extended receiving hole 122 and an extension component. 20 includes an insert 21, a hollow locking member 22, and a limiting member 23. The insert 21 includes a receiving portion 212 and a protruding portion 214 extending from the receiving portion 212. The receiving portion 212 is received and fixed in the elongated receiving hole 122, and the protruding portion 214 protrudes from the elongated receiving hole 122. The locking member 22 includes a coupling portion 222 and a convex ring 224 extending from the inner wall of the coupling portion 222 toward the center. The protruding ring 224 is sleeved on the protruding portion 214, and the coupling portion 222 is used for coupling with the end portion 62. The limiting member 23 is received in the joint portion 222, and the limiting member 23 is fixed on the protruding portion 214 and forms a groove 232 together with the protruding portion 214. The groove 232 is recessed from the outer side wall of the limiting member 23 toward the center of the rod body 10. The protruding ring 224 extends into the recess 232 and is sandwiched between the limiting member 23 and the protruding portion 214.

Referring to FIG. 7 , specifically, the extension receiving hole 122 is provided with an internal thread, and the receiving portion 212 is provided with an external thread. The external thread of the receiving portion 212 is screwed with the internal thread of the extending receiving hole 122 to fix the insert 21 to the rod 10 . on. The limiting member 23 can be fixed on the protruding portion 214 by screwing, and the limiting member 23 and the protruding portion 214 together form an annular groove 232. The depth D of the groove 232 is greater than the thickness W of the convex ring 224 to enable the locking member 22 to be rotatably mounted in the groove 232, and the degree of freedom of the locking member 22 along the length of the rod 10 can be restricted by the limiting member 23 and The inserts 21 are collectively limited. Both end portions 62 are provided with external threads, the joint portion 222 is provided with internal threads, and the external threads of the end portion 62 are screwed with the internal threads of the joint portion 222 to mount the locking member 22 on the hand piece 200, thereby extending The lever 100 can be mounted on the handpiece 200. The locking member 22 is rotatably mounted in the recess 232. By rotating the locking member 22, the external thread of the end portion 62 can be screwed with the internal thread of the joint portion 222 while the end portion 62 gradually moves toward the rod body 10. In order to mount the extension rod 100 on the hand piece 200, the end portion 62 can be gradually moved away from the rod body 10 by the rotation locking member 22 to finally make the external thread of the end portion 62 and the internal thread of the joint portion 222. The screwing is released, thereby detaching the extension rod 100 from the hand piece 200.

Referring to FIGS. 2, 9, and 11, in some embodiments, the connecting portion 60 of the above embodiment includes two shoulders 64 between the ends of the hand piece 200. The extension assembly 20 includes the insert 21 and is hollow. The locking member 22, the limiting member 23, the adapter seat 24 and the fixing seat 25. The insert 21 includes a receiving portion 212 and a protruding portion 214 extending from the receiving portion 212. The receiving portion 212 is received and fixed in the elongated receiving hole 122, and the protruding portion 214 protrudes from the elongated receiving hole 122. The locking member 22 includes a joint portion 222 and a convex ring 224 extending from the inner wall of the joint portion 222 toward the center, and the convex ring 224 is sleeved on the protruding portion 214. The limiting member 23 is received in the joint portion 222, and the limiting member 23 is fixed on the protruding portion 214 and forms a groove 232 together with the protruding portion 214. The groove 232 is recessed from the outer side wall of the limiting member 23 toward the center of the rod body 10. , convex ring 224 It extends into the recess 232 and is sandwiched between the limiting member 23 and the protruding portion 214. The adapter 24 is fixed in the joint portion 222. The mount 25 is coupled to the adapter block 24, and the mount 25 includes a lock arm 252 for locking or releasing the shoulder 64. When the lock arm 252 locks the shoulder 64, the axis of the shoulder 64 It is offset from the axis of the shaft 10.

Referring to FIG. 7 and FIG. 10 , specifically, the extension receiving hole 122 is provided with an internal thread, and the receiving portion 212 is provided with an external thread. The external thread of the receiving portion 212 is screwed with the internal thread of the extending receiving hole 122 to fix the insert 21 . On the shaft 10. The limiting member 23 can be fixed on the protruding portion 214 by screwing, and the limiting member 23 and the protruding portion 214 together form an annular groove 232. The depth D of the groove 232 is greater than the thickness W of the convex ring 224 to enable the locking member 22 to be rotatably mounted in the groove 232, and the degree of freedom of the locking member 22 along the length of the rod 10 can be restricted by the limiting member 23 and The inserts 21 are collectively limited. The adapter seat 24 and the joint portion 222 can be fixed together by screwing. For example, the adapter seat 24 is provided with an external thread, the joint portion 222 is provided with an internal thread, and the external thread of the adapter seat 24 and the inside of the joint portion 222 are provided. The threads are threaded to secure the adapter 24 to the locking member 22. The mount 25 can be secured to the adapter 24 by any one or more of a threaded connection (including a screw connection, a bolted connection), a snap fit, a pin connection, a weld, and the like. The locking member 22 is rotatably mounted in the recess 232. By rotating the locking member 22, the external thread of the adapter seat 24 can be screwed with the internal thread of the joint portion 222 while the adapter seat 24 gradually approaches the rod body 10. The direction is moved to fix the adapter 24 to the locking member 22. The rotation of the locking member 22 can gradually move the adapter 24 away from the shaft 10 to finally combine the external threads of the adapter 24. The internal thread of the portion 222 is unscrewed, thereby disassembling the adapter 24 from the shaft 10 (in this case, the fixing seat 25 can be separated from the adapter 24 first) or the adapter 24 and the fixing seat 25 together from the shaft Remove it on the 10th. The locking arm 252 can be used to lock or release the shoulder 64 to facilitate attachment or removal of the extension rod 100 from the handpiece 200.

Referring to FIGS. 9 and 11 , in some embodiments, the fixing seat 25 of the above embodiment further includes a connecting arm 254 . The locking arm 252 extends from the connecting arm 254 , and the connecting arm 252 is connected to the adapter 24 . The connecting arm 252 can be fixed to the adapter seat 24 by means of a screw connection.

Referring to FIG. 9 to FIG. 12 , in some embodiments, the connecting arm 254 of the above embodiment is provided with a receiving slot 2542. The bottom portion 2544 of the receiving slot 2542 is provided with a connecting screw hole 2546. The adapter seat 24 is opened and connected. The screw hole 2546 corresponds to the adapter screw hole 242, and the screw 244 passes through the connection screw hole 2546 and the adapter screw hole 242 to lock the connecting arm 254 to the adapter seat 24.

Referring to FIG. 2 and FIG. 12 , in some embodiments, the extension assembly 20 of the above embodiment includes a fixing portion 26 fixedly coupled to the extension end 12 and a movable portion 27 detachably mounted on the movable portion 27 . On the fixing portion 26, when the movable portion 27 is fixed to the fixing portion 26, the fixing portion 26 and the movable portion 27 together form a locking cavity 271 for locking the shoulder 64. The fixing portion 26 may be fixed to the extension end 12 by any one or more of a screw connection (including a screw connection, a bolt connection), a snap fit, a pin connection, a weld, and the like. In the present embodiment, the connecting arm 254 includes a fixing portion 26 and a movable portion 27, and the fixing portion 26 extends from the connecting arm 254, that is, the fixing portion 26 can pass through the connecting arm. 254, the adapter seat 24, the limiting member 23, the locking member 22, and the inserting member 21 are connected to the extended end 12. When the movable portion 27 is separated from the fixed portion 26, the locking chamber 271 formed by the fixed portion 26 and the movable portion 27 is opened to enable the shoulder 64 to be fitted between the movable portion 27 and the fixed portion 26, or to make the shoulder 64 can be detached from between the movable portion 27 and the fixed portion 26. When the movable portion 27 is fixed to the fixed portion 26, the fixed portion 26 and the movable portion 27 together form a closed locking chamber 271 to enable the shoulder 64 to be locked in the locking chamber 271.

Referring to FIG. 2 and FIG. 12, in some embodiments, the fixing portion 26 of the above embodiment includes a first connecting end 262 and a second connecting end 264. The first connecting end 262 defines a first connecting hole 2622, and a second The connecting end 264 is provided with a second connecting hole 2642. The movable portion 27 includes a third connecting end 272 and a fourth connecting end 274. The third connecting end 272 defines a third connecting hole 2722, and the fourth connecting end 274 defines a fourth connecting hole 2742. The extension assembly 20 also includes a first shaft 282, a second shaft 284, and a lever 286. The first rotating shaft 282 is disposed in the first connecting hole 2622 and the third connecting hole 2722 to rotatably mount the third connecting end 272 on the first connecting end 26. The second rotating shaft 284 is provided with a mounting hole 2842. The corresponding side wall of the fourth connecting hole 2742 is in communication with the outside. The second rotating shaft 284 is disposed in the second connecting hole 2642. The lever 286 is disposed in the mounting hole 2842 and can be wound around. The second rotating shaft 284 is rotated to be selectively engageable in or detached from the fourth connecting hole 2742. When the lever 286 is locked in the fourth connecting hole 2742, the fourth connecting end 274 is in contact with the second connecting end 264, so that the fixing portion 26 and the movable portion 27 together form a locking cavity 271, and the locking cavity 271 Can be used to secure the shoulder 64. When the lever 286 is disengaged from the fourth connecting hole 2742, the movable portion 27 can be rotated about the first rotating shaft 282 to separate the fourth connecting end 274 from the second connecting end 264 and enable the shoulder 64 to be mounted in the locking cavity 271. The shoulder 64 can be removed from the locking cavity 271.

When the lever 286 is engaged in the fourth connecting hole 2742, the outer peripheral surface of the lever of the lever 286 can be engaged with the fourth connecting hole 2742. When the size of the end of the lever 286 is larger than the size of the fourth connecting hole 2742, the end of the lever 286 may be engaged with the end of the fourth connecting hole 2742. When the end of the lever 286 is engaged with the end of the fourth connecting hole 2742, if the lever 286 is screwed to the mounting hole 2842, the user can rotate the lever 286 to make the lever 286 and the second shaft 284 opposite to each other. The displacement is adjusted to adjust the locking force of the lever 286 on the fourth connecting hole 2742, thereby adjusting the locking force of the locking cavity 271 to lock the shoulder 64. In some embodiments, the first connecting end 262 is provided with a connecting end receiving groove 2624, and the connecting end receiving groove 2644 divides the first connecting end 262 into upper and lower portions. At this time, the number of the first connecting holes 2622 is two. The first and second portions (hereinafter referred to as the upper first connecting hole 2622 and the lower first connecting hole 2622) are respectively connected to the connecting end receiving groove 2624, and the third connecting end 272 is received in the connecting end receiving groove 2624. The first rotating shaft 282 The upper first connecting hole 2622, the third connecting hole 2722, and the lower first connecting hole 2622 are sequentially passed through. In other embodiments, the first connecting end 262 does not have a connecting end receiving groove 2644. At this time, the number of the first connecting holes 2622 is one, and one end of the first rotating shaft 282 passes through the third connecting hole 2722 and is fixed at the first end. A connecting hole 2622 is formed at the other end with a protruding head portion opposite to the shaft portion to carry the third connecting end 272. At this time, the third connecting end 272 is rotatably mounted between the first connecting end 262 and the head. .

Referring to FIG. 12, in some embodiments, the second connecting end 264 is provided with a lever shaft receiving groove 2644, and the lever shaft receiving groove 2644 divides the second connecting end 264 into upper and lower portions. At this time, the second connection The number of the holes 2642 is two, and the upper and lower portions (hereinafter referred to as the upper second connecting hole 2642 and the lower second connecting hole 2642) are respectively connected to the lever shaft receiving groove 2644, and the lever 286 is partially received in the connecting end receiving groove. In the 2624, the second rotating shaft 284 sequentially passes through the upper second connecting hole 2642, the lever shaft receiving groove 2644 and the lower second connecting hole 2642.

In some embodiments, the end of the lever 286 of the above embodiment is provided with a handle 288. The handle 288 can be used to selectively engage the lever 286 in the fourth connecting hole 2742 or the lever 286 from the first The four connecting holes 2742 are separated from each other. Specifically, the handle 288 is provided with an internally threaded hole, the lever 286 is provided with an external thread, and the lever 286 is respectively engaged with the internally threaded hole and the mounting hole 2842, and the internal threaded hole of the lever 286 is screwed with the external thread of the lever 286. The lever 286 is coupled to the handle 288. At this time, the lever 286 can be rotated around the second rotating shaft 284 by the grip 288, so that the lever 286 is locked in the fourth connecting hole 2742 or the lever 286 is removed from the lever 286. The fourth connecting hole 2742 is separated from the inside.

Referring to FIGS. 6-7 and 9-10, in some embodiments, the locking member 22 of the above embodiment further includes a sleeve portion 226. The protrusion ring 224 separates the locking member 22 from the assembly portion 226 and the joint portion. 222, the sleeve portion 226 is sleeved on the outer peripheral wall of the rod body 10. Since the convex ring 224 is not inserted into the recess 23 and the insert 21 after being inserted into the recess 232, it needs to be able to move in the recess 232. Therefore, the locking member 22 only depends on the limiting member 23 And the definition of the convex ring 224 by the insert 21 causes a large sway. In the present embodiment, the locking member 22 is disposed on the outer peripheral wall of the rod body 10 by providing the sleeve portion 226. The locking member 22 is limited by the limiting member 23 and the inserting member 21 to the convex ring 224. The limitation of the outer peripheral wall to the sleeve portion 226 is also increased, thereby reducing the sway of the locking member 22, improving the stability of the combination of the extension assembly 20 and the rod body 10, and improving the stability of the combination of the extension assembly 20 and the hand piece 200. .

Referring to FIG. 1 , FIG. 2 and FIG. 9 , in some embodiments, when the extension assembly 20 includes the insert 21 , the hollow locking member 22 and the limiting member 23 , the adapter seat 24 and the fixing seat 25 can be regarded as It is part of the handpiece 200.

Referring to FIG. 10, in some embodiments, the outer peripheral wall of the joint portion 222 of the above embodiment is formed with a plurality of anti-slip bosses 2222. Providing the anti-slip boss 2222 on the outer peripheral wall of the joint portion 222 can play a non-slip effect when the user grips the joint portion 222, and facilitates rotating the joint portion 222 to connect the joint portion 222 with the end portion 62 or the adapter seat. 24 connections.

Referring to FIG. 10 , in some embodiments, the extension assembly 20 of the above embodiment further includes a rubber sleeve 29 , and the rubber sleeve 29 is sleeved on the outer peripheral wall of the locking member 22 . The rubber sleeve 29 is disposed on the outer peripheral wall of the locking member 22 to facilitate the user's grip. At this time, if the extension rod 100 is to be detached from the hand piece 200, the rubber sleeve 29 can be gripped and the locking member 22 can be rotated by the rotating rubber sleeve 29, and the rotation of the locking member 22 can gradually make the end portion 62 gradually Moving away from the direction of the shaft 10, the external thread of the end portion 62 is finally uncoupled from the internal thread of the joint portion 222, thereby detaching the extension rod 100 from the hand piece 200. Alternatively, if the extension rod 100 is to be detached from the adapter seat 24, the rubber sleeve 29 can be gripped and the locking member 22 can be rotated by the rotating rubber sleeve 29, and the locking member 22 is rotated to gradually make the adapter seat 24 gradually Far from the direction of the shaft 10 After the movement, the external thread of the adapter seat 24 is finally screwed off with the internal thread of the joint portion 222, thereby disassembling the adapter seat 24 from the rod body 10 (in this case, the fixing seat 25 can be separated from the adapter seat 24) .

To assemble the extension rod 100 to the hand piece 200, the rubber sleeve 29 can be gripped and the rotation of the locking member 22 can be rotated by the rotating rubber sleeve 29, and the rotation of the locking member 22 can make the external thread of the end portion 62 and the joint portion. The simultaneous end 62 of the internal thread of the 222 is gradually moved toward the rod 10 to mount the extension rod 100 on the handpiece 200. Alternatively, if the extension rod 100 is to be assembled to the adapter seat 24, the rubber sleeve 29 can be gripped and the rotation of the locking member 22 can be rotated by the rotating rubber sleeve 29, and the locking member 22 is rotated to make the external thread of the adapter seat 24. The adapter seat 24 is gradually moved toward the rod body 10 while being screwed with the internal thread of the joint portion 222 to fix the adapter seat 24 to the lock member 22.

Referring to FIG. 6 and FIG. 13 , in some embodiments, the support assembly 30 of the above embodiment further includes a plurality of anti-slip pads 33 corresponding to the plurality of support legs 32 , and the plurality of anti-slip pads 33 are respectively mounted on the contact portions 324 . . The anti-slip pad 33 is provided on the contact portion 324. When the plurality of support legs 32 are unfolded, the contact portion 324 comes into contact with the outside through the anti-slip pad 33, thereby improving the support stability of the support leg 32.

Referring to FIG. 6 , FIG. 9 and FIG. 14 , in some embodiments, each contact portion 324 of the above embodiment is provided with a contact receiving hole 3242 , and the anti-slip pad 33 is partially received in the corresponding contact receiving hole 3242 . Specifically, another portion of the anti-slip mat 33 is protruded from the outside of the contact portion 324. When the plurality of support legs 32 are unfolded, the anti-slip mat 33 is firstly in contact with the outside, and at the same time, the non-slip mat 33 is partially received in the contact receiving hole 3242 to avoid the anti-slip mat. 33 is detached from the contact portion 324. On the other hand, opening the contact receiving hole 3242 can reduce the weight of the extension rod 100.

Referring to FIG. 6 , FIG. 9 and FIG. 14 , in some embodiments, the support assembly 30 of the above embodiment further includes a plurality of tightening members 34 corresponding to the plurality of support legs 32 , one end of each of the tightening members 34 . Attached to the connector 31, the other end is attached to the inner wall 321 of the leg body 320, and the tightening member 34 is used to provide a corresponding tightening force to the corresponding support leg 32. The tightening member 34 may be an elastic member made of a spring, an elastic rubber or other elastic material. The tightening member 34 can always provide a tightening force to the support leg 32, thereby facilitating folding of the plurality of support legs 32 together, and avoiding the plurality of support legs 32 being scattered when the plurality of support legs 32 are folded together, ensuring support The leg 32 can serve as an extension.

Referring to FIG. 6 , FIG. 9 and FIG. 14 , in some embodiments, the tightening member 34 of the above embodiment is a tension spring, the connecting head 31 is provided with a joint connecting shaft 316 , and the inner wall 321 of the leg body 320 is provided with a supporting connecting shaft. 326, the two ends of the tightening member 34 are respectively connected to the joint connecting shaft 316 and the supporting connecting shaft 326. Specifically, the tightening member 34 is elastically coupled to the joint connecting shaft 316 and the support connecting shaft 326 so that the tightening member 34 can always provide a tightening force to the support leg 32. Specifically, the joint connecting shaft 316 is disposed in the leg receiving groove 3142, the joint connecting shaft 316 passes through the connecting head 31 in the radial direction of the connecting head 31, and the plurality of leg mounting holes 3144 are evenly distributed on both sides of the joint connecting shaft 316. The angle between the tightening member 34 and the leg body 320 is at an acute angle so that the tightening member 34 can always provide a tightening force to the support leg 32.

In some embodiments, the support legs 32 of the above-described embodiments are plural, and the plurality of support legs 32 are evenly distributed around the connector 31. Providing a plurality of evenly distributed plurality of support legs 32 to support the support assembly 30 for the rod body 10 and the hand piece 200 Better support stability.

Referring to FIG. 6 , FIG. 9 and FIG. 14 , in some embodiments, the support legs 32 of the above embodiment are even, and the even number of support legs 32 are evenly distributed around the connector 31 . The inner wall 321 of the support leg 32 is disposed on the inner wall 321 . The boss 35 is formed with a locking space 36 on the support leg 32 opposite to the support leg 32 provided with the projection 35. When the plurality of support legs 32 are relatively folded, the projection 35 is engaged in the locking space 36. Specifically, the protrusion 35 is a colloid or rubber having elasticity. When the plurality of support legs 32 are relatively folded, the protrusion 35 is first engaged with the locking space 36 to avoid collision of the plurality of support legs 32 when tightened and generated. noise. At the same time, when the projection 35 is engaged with the locking space 36, the projection 35 has a latching force with the locking space 36, so that the folded plurality of support legs 32 can be further prevented from being easily deployed when used as a part of the elongated shaft 10.

Referring to FIGS. 15 and 16, in some embodiments, the pan/tilt handheld assembly 300 of the above-described embodiments can include a hand piece 200 and four extension rods 100 mounted on the hand piece 200. Handpiece 200 includes a plurality of connectors 60 in the form of a rod that can include two ends 62 at the ends of handpiece 200 and two shoulders 64 that are positioned between the ends of handpiece 200. Four extension rods 100 are mounted on the two end portions 62 and the two shoulders 64 of the hand piece 200, respectively. The specific installation manner is as described in the previous embodiment, and details are not described herein again.

In the description of the present specification, reference is made to the terms "some embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific examples", or "some examples" The description means that specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, "a plurality" means at least two, for example two, three, unless specifically defined otherwise.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims

An extension rod for detachably attaching to a hand piece of a pan-tilt hand-held component, characterized in that the extension rod comprises:

a rod body, the rod body comprising opposite end ends and a support end;

An extension assembly detachably mounted to the extension end, the extension assembly for coupling with the hand piece;

a support assembly, the support assembly being mounted at the support end, the support assembly being selectively switchable between deployment and folding, the support assembly for supporting the shaft when the support assembly is deployed; The support assembly is used to extend the shaft when the support assembly is folded.
The extension rod according to claim 1, wherein the rod body is a hollow carbon tube.
The extension rod of claim 1 wherein said extension assembly includes an external thread disposed at said extended end; or

The extension end is provided with an extension receiving hole, and the extension assembly comprises an internal thread disposed in the extension receiving hole.
The extension rod according to claim 1, wherein the extension end is provided with an extended receiving hole, and the extension assembly comprises:

The insert member includes a receiving portion and a protruding portion extending from the receiving portion, the receiving portion is received and fixed in the extended receiving hole, and the protruding portion protrudes from the extended receiving hole;

a hollow locking member, the locking member includes a joint portion and a convex ring extending from the inner wall of the joint portion toward the center, the convex ring is sleeved on the protruding portion, and the joint portion can be used for The hand piece is combined; and

a limiting member, the limiting member is received in the joint portion, the limiting member is fixed on the protruding portion and forms a groove together with the protruding portion, the groove is from the limiting member The outer side wall is recessed toward the center of the rod body, and the convex ring protrudes into the groove and is sandwiched between the limiting member and the protruding portion.
The extension rod of claim 4, wherein the extension assembly further comprises:

An adapter, the adapter being fixed in the joint; and

a fixing seat, the fixing base being coupled to the adapter, the fixing seat comprising a locking arm, the locking arm is for locking or releasing the hand piece, and the locking arm is locked In the hand piece, the axis of the hand piece is offset from the axis of the shaft.
The extension rod according to claim 5, wherein the adapter is screwed to the joint.
The extension rod according to claim 5, wherein the fixing base further comprises a connecting arm extending from the connecting arm, the connecting arm being coupled to the adapter.
The extension rod according to claim 7, wherein the connecting arm is provided with a receiving groove, and the receiving The bottom of the slot is provided with a connecting screw hole, and the adapter seat is provided with an adapter screw hole corresponding to the connecting screw hole, and the screw passes through the connecting screw hole and the adapter screw hole to connect the connecting hole The arm is locked to the adapter.
The extension rod according to claim 1, wherein the extension assembly comprises a fixing portion and a movable portion, the fixing portion is fixedly coupled to the extension end, and the movable portion is detachably mounted on the fixing portion In the upper portion, when the movable portion is fixed on the fixed portion, the fixed portion and the movable portion together form a locking cavity for locking the hand piece.
The extension rod according to claim 9, wherein the first connecting end and the second connecting end of the fixing portion are provided with a first connecting hole, and the second connecting end is provided with a first connecting end a second connecting hole, the movable portion includes a third connecting end and a fourth connecting end, the third connecting end is provided with a third connecting hole, the fourth connecting end is provided with a fourth connecting hole, and the extension component is further The first shaft, the second shaft and the lever are included,

The first rotating shaft is disposed in the first connecting hole and the third connecting hole to rotatably mount the third connecting end on the first connecting end;

The second rotating shaft is provided with a mounting hole, the corresponding side wall of the fourth connecting hole communicates with the outside, the second rotating shaft is disposed in the second connecting hole, and the lever is disposed in the mounting And being rotatable around the second rotating shaft to be selectively engageable in or detached from the fourth connecting hole;

When the lever is engaged in the fourth connecting hole, the fourth connecting end is in contact with the second connecting end, so that the fixing portion and the movable portion together form the lock Tight cavity

When the lever is disengaged from the fourth connecting hole, the movable portion is rotatable about the first rotating shaft to separate the fourth connecting end from the second connecting end.
The extension rod according to any one of claims 4 to 10, wherein the locking member further comprises a sleeve portion, the convex ring separating the locking member into the sleeve portion and the The sleeve portion is sleeved on the outer peripheral wall of the rod body.
The extension rod according to any one of claims 4 to 10, wherein the joint portion is provided with an internal thread for screwing with an external thread of the pan/tilt hand assembly; or

The joint portion is provided with an external thread for screwing with an internal thread of the pan/tilt hand assembly.
The extension rod according to any one of claims 4 to 10, characterized in that the outer peripheral wall of the joint portion is formed with a plurality of anti-slip projections.
The extension rod according to any one of claims 4 to 10, wherein the extension assembly further comprises a rubber sleeve, and the rubber sleeve is sleeved on an outer peripheral wall of the locking member.
The extension rod according to claim 1, wherein the support end is provided with a support receiving hole, and the support assembly comprises:

a connector mounted in the support receiving hole; and

A plurality of support legs, one end of the plurality of support legs being rotatably coupled to the connector, such that the support legs can be unfolded and folded relative to the shaft.
The extension rod according to claim 15, wherein a cross section of each of said support legs is curved, and when said plurality of said support legs are relatively folded, said plurality of said support legs form a columnar structure .
The extension rod according to claim 15, wherein the other end of each of the support legs is provided with a contact portion for contacting the outside to enable the support leg to support the rod.
The extension rod according to claim 17, wherein said support assembly further comprises a plurality of anti-slip mats corresponding to said plurality of said support legs, and said plurality of anti-slip mats are respectively mounted on said contact portions.
The extension rod according to claim 18, wherein each of the contact portions is provided with a contact receiving hole, and the anti-slip pad portion is received in the corresponding contact receiving hole.
The extension rod according to claim 16, wherein said support assembly further comprises a plurality of tightening members corresponding to said plurality of said support legs, one end of each of said tightening members being coupled to said joint The other end is connected to the inner wall of the support leg, and the tightening member is used to provide a corresponding tightening force to the corresponding support leg.
The extension rod according to claim 20, wherein the tightening member is a tension spring, the connecting head is provided with a joint connecting shaft, and the inner wall of the supporting leg is provided with a supporting connecting shaft, and the tightening member Both ends are respectively connected to the joint connecting shaft and the support connecting shaft.
The extension rod according to claim 15, wherein the plurality of support legs are plural, and the plurality of support legs are evenly distributed around the joint.
The extension rod according to claim 15, wherein the support legs are an even number, and an even number of the support legs are evenly distributed around the joint head, and the inner wall of the support leg is provided with a protrusion, and a setting A locking space is formed on the supporting leg opposite to the supporting leg having the protrusion, and the protrusion is engaged in the locking space when a plurality of the supporting legs are relatively folded.
A cloud platform handheld component, comprising:

a hand piece comprising two connecting portions in the shape of a rod; and

The extension rod according to claim 1 or 2, wherein the number of the extension rods is two, and the two extension rods are respectively connected to the two connection portions.
A pan/tilt hand-held assembly according to claim 24, wherein said extension assembly includes an external thread disposed at said extended end, said connecting portion being provided with an internal thread, said external thread being screwed with said internal thread Connecting the extension assembly to the handpiece; or

The extension end is provided with an extension receiving hole, the extension assembly includes an internal thread disposed in the extension receiving hole, the connecting portion is provided with an external thread, and the internal thread is screwed with the external thread to extend The assembly is coupled to the handpiece.
A pan/tilt handheld assembly according to claim 24, wherein said connecting portion comprises said hand Two end portions of the two ends of the holding member, the extended end is provided with an extended receiving hole, and the extension assembly comprises:

The insert member includes a receiving portion and a protruding portion extending from the receiving portion, the receiving portion is received and fixed in the extended receiving hole, and the protruding portion protrudes from the extended receiving hole;

a hollow locking member, the locking member includes a joint portion and a convex ring extending from the inner wall of the joint portion toward the center, the convex ring is sleeved on the protruding portion, and the joint portion is used for Said end combination; and

a limiting member, the limiting member is received in the joint portion, the limiting member is fixed on the protruding portion and forms a groove together with the protruding portion, the groove is from the limiting member The outer side wall is recessed toward the center of the rod body, and the convex ring protrudes into the groove and is sandwiched between the limiting member and the protruding portion.
The pan/tilt hand-held assembly of claim 23, wherein the connecting portion comprises two shoulders between the ends of the handpiece, the extension assembly comprising:

The insert member includes a receiving portion and a protruding portion extending from the receiving portion, the receiving portion is received and fixed in the extended receiving hole, and the protruding portion protrudes from the extended receiving hole;

a hollow locking member, the locking member comprising a joint portion and a convex ring extending from the inner wall of the joint portion toward the center, the convex ring being sleeved on the protruding portion;

a limiting member, the limiting member is received in the joint portion, the limiting member is fixed on the protruding portion and forms a groove together with the protruding portion, the groove is from the limiting member The outer side wall is recessed toward the center of the rod body, and the convex ring extends into the groove and is sandwiched between the limiting member and the protruding portion;

An adapter, the adapter being fixed in the joint; and

a fixing seat, the fixing seat being coupled to the adapter, the fixing seat comprising a locking arm, the locking arm is for locking or releasing the shoulder, and the locking arm is locked In the case of a shoulder, the axis of the shoulder is offset from the axis of the shaft.
The pan/tilt handheld assembly of claim 27 wherein said adapter is threadedly coupled to said coupling portion.
The pan/tilt handheld assembly of claim 27, wherein the mount further comprises a link arm extending from the link arm, the link arm being coupled to the adapter.
The pan/tilt head assembly according to claim 29, wherein the connecting arm is provided with a receiving slot, and the bottom of the receiving slot is provided with a connecting screw hole, and the connecting seat is provided with the connecting screw A corresponding screw hole corresponding to the hole, through which the screw passes and the adapter screw hole to lock the connecting arm to the adapter.
The pan/tilt hand-held assembly according to claim 1, wherein the extension assembly comprises a fixing portion and a movable portion, the fixing portion is fixedly coupled to the extension end, and the movable portion is detachably mounted at the In the fixing portion, when the movable portion is fixed to the fixing portion, the fixing portion and the movable portion together form a locking cavity for locking the shoulder.
The pan/tilt hand-held assembly according to claim 31, wherein the fixing portion comprises a first connecting end and a second connecting end, the first connecting end is provided with a first connecting hole, and the second connecting end a second connecting hole is formed, the movable portion includes a third connecting end and a fourth connecting end, the third connecting end is provided with a third connecting hole, and the fourth connecting end is provided with a fourth connecting hole, The extension assembly further includes a first shaft, a second shaft and a lever.

The first rotating shaft is disposed in the first connecting hole and the third connecting hole to rotatably mount the third connecting end on the first connecting end;

The second rotating shaft is provided with a mounting hole, the corresponding side wall of the fourth connecting hole communicates with the outside, the second rotating shaft is disposed in the second connecting hole, and the lever is disposed in the mounting And being rotatable around the second rotating shaft to be selectively engageable in or detached from the fourth connecting hole;

When the lever is engaged in the fourth connecting hole, the fourth connecting end is in contact with the second connecting end, so that the fixing portion and the movable portion together form the lock a tight cavity, the locking cavity can be used to fix the shoulder;

When the lever is disengaged from the fourth connecting hole, the movable portion is rotatable about the first rotating shaft to separate the fourth connecting end from the second connecting end and the shoulder Can be mounted within the locking cavity or remove the shoulder from the locking cavity.
The pan/tilt hand-held assembly according to any one of claims 26 to 32, wherein the locking member further comprises a sleeve portion, the convex ring separating the locking member into the sleeve portion and In the joint portion, the sleeve portion is sleeved on an outer peripheral wall of the rod body.
The pan/tilt hand-held assembly according to any one of claims 26 to 32, wherein the connecting portion is provided with an external thread, and the joint portion is provided with an internal thread for the outer thread Threaded screw; or

The connecting portion is provided with an internal thread, and the joint portion is provided with an external thread for screwing with the internal thread.
The pan/tilt hand-held assembly according to any one of claims 26 to 32, characterized in that the outer peripheral wall of the joint portion is formed with a plurality of anti-slip bosses.
The pan/tilt hand-held assembly according to any one of claims 26 to 32, wherein the extension assembly further comprises a rubber sleeve, and the rubber sleeve is sleeved on an outer peripheral wall of the locking member.
The pan/tilt hand-held assembly according to claim 24, wherein the support end is provided with a support receiving hole, and the support assembly comprises:

a connector mounted in the support receiving hole; and

A plurality of support legs, one end of the plurality of support legs being rotatably coupled to the connector, such that the support legs can be unfolded and folded relative to the shaft.
A pan/tilt hand-held assembly according to claim 37, wherein each of said support legs has an arcuate cross section, and said plurality of said support legs form a columnar structure when a plurality of said support legs are relatively folded.
A pan/tilt hand-held assembly according to claim 37, wherein the other end of each of said support legs is provided with a contact portion for contacting the outside to enable said support leg to support said shaft .
The pan/tilt hand-held assembly according to claim 39, wherein the support assembly further comprises a plurality of anti-slip mats corresponding to the plurality of support legs, and the plurality of anti-slip mats are respectively mounted on the contact portions .
The pan/tilt hand-held assembly according to claim 40, wherein each of the contact portions is provided with a contact receiving hole, and the anti-slip pad portion is received in the corresponding contact receiving hole.
A pan/tilt hand-held assembly according to claim 38, wherein said support assembly further comprises a plurality of tightening members corresponding to said plurality of said support legs, one end of each of said tightening members being coupled to said The connecting head is connected to the inner wall of the supporting leg, and the tightening member is used to provide a corresponding tightening force to the supporting leg.
The pan/tilt hand-held assembly according to claim 42, wherein the tightening member is a tension spring, the connecting head is provided with a joint connecting shaft, and an inner wall of the supporting leg is provided with a supporting connecting shaft, and the receiving Both ends of the pressing member are respectively connected to the joint connecting shaft and the support connecting shaft.
A pan/tilt hand-held assembly according to claim 37, wherein said support legs are plural, and a plurality of said support legs are evenly distributed around said joint.
The pan/tilt hand-held assembly according to claim 37, wherein the support legs are an even number, and an even number of the support legs are evenly distributed around the connector, and the inner wall of the support leg is provided with a protrusion. A locking space is formed on the support leg opposite to the support leg provided with the protrusion, and the protrusion is engaged in the locking space when a plurality of the support legs are relatively folded.