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US-12618509-B2 - Telescopic support foot and support frame

US12618509B2US 12618509 B2US12618509 B2US 12618509B2US-12618509-B2

Abstract

Disclosed are a telescopic support foot and a support frame. The support foot includes telescopic assemblies in cascade. The telescopic assemblies each include a telescopic rod; a first limiting device connected to a first end of the telescopic rod; a second limiting device connected to a second end of the telescopic rod. The first limiting device on a next-section telescopic rod can abut against the second limiting device of the telescopic rod to limit separation of the next-section telescopic rod from the telescopic rod. A locking device arranged at the second end of the telescopic rod, connected to the second limiting device, and configured to lock or unlock the second limiting device. The second limiting device can be separated from the second end of the telescopic rod when the locking device is in an unlocked state, to enable the next-section telescopic rod to be separated from the telescopic rod.

Inventors

  • Zhihua Li

Assignees

  • FOTOPRO (GUANGDONG) IMAGE INDUSTRIAL CO., LTD.

Dates

Publication Date
20260505
Application Date
20230901
Priority Date
20221216

Claims (12)

  1. 1 . A telescopic support foot, comprising a plurality of telescopic assemblies, wherein the telescopic assemblies each comprise: a first telescopic rod ( 10 ) with a first end inserted into a second end of a second telescopic rod disposed outside of the second telescopic rod ( 10 ), wherein a telescopic rod disposed inside of the telescopic rod ( 10 ) is inserted into a second end of the telescopic rod ( 10 ); a first limiting device ( 20 ) connected to the first end of the first telescopic rod ( 10 ); a second limiting device ( 30 ) connected to the second end of the second telescopic rod ( 10 ), wherein the first limiting device ( 20 ) on the first telescopic rod disposed inside of the second telescopic rod ( 10 ) abuts against the second limiting device ( 30 ) of the second telescopic rod ( 10 ) to limit separation of the first telescopic rod disposed inside of the second telescopic rod ( 10 ) from the telescopic rod ( 10 ); and a locking device ( 40 ) arranged at the second end of the second telescopic rod ( 10 ), connected to the second limiting device ( 30 ), and configured to lock or unlock the second limiting device ( 30 ), wherein the second limiting device ( 30 ) is separated from the second end of the second telescopic rod ( 10 ) when the locking device ( 40 ) is in an unlocked state, to enable the first telescopic rod disposed inside of the second telescopic rod ( 10 ) to be separated from the telescopic rod ( 10 ); wherein the second limiting device ( 30 ) comprises a third limiting sheet ( 31 ) and a fourth limiting sheet ( 32 ) that are arranged on an inner side of the second telescopic rod ( 10 ), a first clamping head ( 311 ) and a third limiting protruding portion ( 312 ) are arranged on the third limiting sheet ( 31 ), a second clamping head ( 321 ) and a fourth limiting protruding portion ( 322 ) are arranged on the fourth limiting sheet ( 32 ), one side of the second end of the second telescopic rod ( 10 ) is provided with a first through groove ( 81 ) and a third limiting groove ( 82 ) communicating with the first through groove ( 81 ), the other side of the second end of the second telescopic rod ( 10 ) is provided with a second through groove ( 83 ) and a fourth limiting groove ( 84 ) communicating with the second through groove ( 83 ), and the locking device ( 40 ) is connected to the first clamping head ( 311 ) and the second clamping head ( 321 ) when the third limiting protruding portion ( 312 ) extends into the third limiting groove ( 82 ) through the first through groove ( 81 ) and the fourth limiting protruding portion ( 322 ) extends into the fourth limiting groove ( 84 ) through the second through groove ( 83 ), so as to limit separation of the first-telescopic rod disposed inside of the second telescopic rod ( 10 ) from the telescopic rod ( 10 ).
  2. 2 . The telescopic support foot according to claim 1 , wherein the first limiting device ( 20 ) comprises a first limiting sheet ( 21 ) and a second limiting sheet ( 22 ) that are arranged on an outer side of the telescopic rod ( 10 ), a first limiting protruding portion ( 211 ) is arranged on an inner side wall of the first limiting sheet ( 21 ), a second limiting protruding portion is arranged on an inner side wall of the second limiting sheet ( 22 ), two sides of the telescopic rod ( 10 ) are provided with a first limiting groove ( 212 ) and a second limiting groove ( 221 ) respectively, the first limiting protruding portion ( 211 ) is inserted in the first limiting groove ( 212 ), and the second limiting protruding portion is inserted in the second limiting groove ( 221 ).
  3. 3 . A support frame, comprising the telescopic support foot of claim 2 .
  4. 4 . The telescopic support foot according to claim 1 , wherein an end face of the second end of the telescopic rod ( 10 ) is provided with a fifth limiting groove ( 50 ), and the first clamping head ( 311 ) and the second clamping head ( 321 ) are movably arranged in the fifth limiting groove ( 50 ).
  5. 5 . A support frame, comprising the telescopic support foot of claim 4 .
  6. 6 . The telescopic support foot according to claim 1 , wherein the locking device ( 40 ) comprises: a ferrule ( 41 ) sleeved at the second end of the telescopic rod ( 10 ) and provided with a sixth limiting groove ( 42 ); a first connecting rod ( 43 ) connected to two open ends of the ferrule ( 41 ); a spring ( 44 ) sleeved on the first connecting rod ( 43 ) and abutting against the two open ends of the ferrule ( 41 ); a second connecting rod ( 45 ) connected to an end of the first connecting rod ( 43 ) by means of a detachable structure ( 60 ), and a wrench ( 46 ) rotatably connected to the second connecting rod ( 45 ), wherein the wrench ( 46 ) has a locking position and an unlocking position, and the first clamping head ( 311 ) and the second clamping head ( 321 ) extend into the sixth limiting groove ( 42 ) when the wrench ( 46 ) is at the locking position, or are separated from the sixth limiting groove ( 42 ) when the wrench ( 46 ) is at the unlocking position.
  7. 7 . The telescopic support foot according to claim 6 , wherein the detachable structure ( 60 ) is a threaded connection structure.
  8. 8 . A support frame, comprising the telescopic support foot of claim 7 .
  9. 9 . The telescopic support foot according to claim 6 , wherein an anti-slip gasket ( 70 ) is arranged between the wrench ( 46 ) and the ferrule ( 41 ).
  10. 10 . A support frame, comprising the telescopic support foot of claim 9 .
  11. 11 . A support frame, comprising the telescopic support foot of claim 6 .
  12. 12 . A support frame, comprising the telescopic support foot of claim 1 .

Description

TECHNICAL FIELD The present disclosure relates to the field of support frames, and in particular, to a telescopic support foot and a support frame. BACKGROUND As is known to all, with characteristics of being extended to support photographic equipment for photographing or being shortened to reduce the volume of the photographic equipment to facilitate transportation, the telescopic support feet are widely used as support rods for photographic equipment, such as a selfie stick and a tripod. Existing support frames used in the field of photographic equipment each usually have a multi-section telescopic structure. However, due to an unreasonable design of a connecting structure between previous-next sections of support frames, the multi-section telescopic structure of the support frame can only be disassembled section by section from top to bottom, and cannot be disassembled from bottom to top. When a last-section telescopic rod needs to be disassembled due to failure, etc., the entire support foot needs to be disassembled before the last-section telescopic rod is taken out for maintenance, which causes great inconvenience. Therefore, a novel telescopic support foot and support frame are urgently needed to solve the above problems. SUMMARY The present disclosure aims to solve at least one of the technical problems existing in the prior art. Therefore, the present disclosure provides a telescopic support foot and a support frame. The technical solution adopted in an embodiment of the present disclosure to solve the technical problems is as follows: A telescopic support foot includes a plurality of telescopic assemblies in cascade, where the telescopic assemblies each include: a telescopic rod with a first end inserted into a second end of a previous-section telescopic rod, where a next-section telescopic rod is inserted into a second end of the telescopic rod;a first limiting device connected to the first end of the telescopic rod;a second limiting device connected to the second end of the telescopic rod, where the first limiting device on the next-section telescopic rod can abut against the second limiting device of the telescopic rod to limit separation of the next-section telescopic rod from the telescopic rod; anda locking device arranged at the second end of the telescopic rod, connected to the second limiting device, and configured to lock or unlock the second limiting device, where the second limiting device can separated from the second end of the telescopic rod when the locking device is in an unlocked state, to enable the next-section telescopic rod to be separated from the telescopic rod. Further, the first limiting device includes a first limiting sheet and a second limiting sheet that are arranged on an outer side of the telescopic rod, a first limiting protruding portion is arranged on an inner side wall of the first limiting sheet, a second limiting protruding portion is arranged on an inner side wall of the second limiting sheet, two sides of the telescopic rod are provided with a first limiting groove and a second limiting groove respectively, the first limiting protruding portion is inserted in the first limiting groove, and the second limiting protruding portion is inserted in the second limiting groove. Further, the second limiting device includes a third limiting sheet and a fourth limiting sheet that are arranged on an inner side of the telescopic rod, where a first clamping head and a third limiting protruding portion are arranged on the third limiting sheet, a second clamping head and a fourth limiting protruding portion are arranged on the fourth limiting sheet, one side of the second end of the telescopic rod is provided with a first through groove and a third limiting groove communicating with the first through groove, the other side of the second end of the telescopic rod is provided with a second through groove and a fourth limiting groove communicating with the second through groove, and the locking device may be connected to the first clamping head and the second clamping head when the third limiting protruding portion extends into the third limiting groove through the first through groove and the fourth limiting protruding portion extends into the fourth limiting groove through the second through groove, so as to limit separation of the next-section telescopic rod from the telescopic rod. Further, an end face of the second end of the telescopic rod is provided with a fifth limiting groove, and the first clamping head and the second clamping head are movably arranged in the fifth limiting groove. Further, the locking device includes: a ferrule sleeved at the second end of the telescopic rod and provided with a sixth limiting groove;a first connecting rod connected to two open ends of the ferrule;a spring sleeved on the first connecting rod and abutting against the two open ends of the ferrule;a second connecting rod connected to an end of the first connecting rod by means of a det