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CN-224206394-U - Lifting mechanism for table or chair

CN224206394UCN 224206394 UCN224206394 UCN 224206394UCN-224206394-U

Abstract

The utility model provides a lifting mechanism for a table or a chair, and belongs to the technical field of tables and chairs. It solves the problem of smaller lifting stroke of the existing lifting mechanism used on a table or a chair. The lifting mechanism for the desk or chair comprises a bottom pipe, a sliding pipe inserted in the bottom pipe and a top pipe inserted in the sliding pipe, wherein the lower end of the bottom pipe is connected with a desk foot of the desk or a chair foot of the chair, the upper end of the top pipe is connected with a desk plate of the desk or a chair body of the chair, an adjusting component capable of positioning or unlocking and positioning the lower end of the top pipe and the sliding pipe is arranged in the top pipe, an installation seat is connected to the outer side wall of the upper end of the bottom pipe, one end of the installation seat is always provided with an elastic piece I which moves towards the inside of the bottom pipe along the transverse direction, the upper end of the bottom pipe is provided with a yielding hole for the elastic piece I to pass through, and the lower end of the sliding pipe is provided with a positioning hole for the elastic piece I to pass through. The lifting mechanism can lift the lifting stroke of the table plate and the chair plate in the table and the chair when in actual use.

Inventors

  • YANG YIMIN
  • YANG YUXIN

Assignees

  • 台州市求展工贸有限公司

Dates

Publication Date
20260508
Application Date
20240118

Claims (10)

  1. 1. The lifting mechanism for the desk or chair comprises a bottom pipe (1), a sliding pipe (2) inserted in the bottom pipe (1) and a top pipe (3) inserted in the sliding pipe (2), wherein the lower end of the bottom pipe (1) is connected with a table foot (92) of the desk (9) or a chair foot (102) of the chair (10), the upper end of the top pipe (3) is connected with a table plate (91) of the desk (9) or a chair body (101) of the chair (10), an adjusting component (4) capable of positioning or unlocking and positioning the lower end of the top pipe (3) and the sliding pipe (2) is arranged in the top pipe (3), the lifting mechanism is characterized in that a mounting seat (6) is connected on the outer side wall of the upper end of the bottom pipe (1), one end of the mounting seat (6) is always provided with an elastic piece (5) which moves towards the inside of the bottom pipe (1) along the transverse direction, the upper end of the bottom pipe (1) is provided with a yielding hole (11) for the elastic piece (5) to be partially embedded in, the lower end of the sliding pipe (2) is provided with a wedge-shaped piece (31) capable of positioning the lower end (21), the jacking pipe (3) can slide downwards to enable the wedge-shaped part (31) to move the elastic piece I (5) out of the positioning hole (21).
  2. 2. Lifting mechanism for a table or chair according to claim 1, characterized in that the wedge (31) is arranged at the end of the lower end of the jacking pipe (3), the outer side wall of the lower end of the jacking pipe (3) is close to the inner side wall of the lower end of the sliding pipe (2), and the positioning hole (21) is formed in the side wall of the lower end of the sliding pipe (2).
  3. 3. Lifting mechanism for tables or chairs according to claim 1 or 2, characterised in that one side of the wedge (31) is recessed inwards forming a wedge surface (31 a), the wedge surface (31 a) gradually moving away from the inner wall of the sliding tube (2) from the upper end to the lower end.
  4. 4. Lifting mechanism for a table or chair according to claim 1 or 2, characterized in that the end of the upper end of the bottom tube (1) is sleeved with a mounting sleeve (12), the side wall of the lower end of the mounting sleeve (12) protrudes outwards to form the mounting seat (6), and the yielding hole (11) is formed on the side wall of the upper end of the bottom tube (1).
  5. 5. Lifting mechanism for a table or chair according to claim 4, characterized in that the mounting base (6) comprises a mounting wall (61) transversely opposite to the outer side wall of the bottom tube (1) and blocking walls (62) respectively connected with two sides of the mounting wall (61), a baffle (63) is arranged above or below the mounting wall (61), and a cavity (64) for placing the elastic member (5) is formed by surrounding the mounting wall (61), the two blocking walls (62) and the baffle (63).
  6. 6. Lifting mechanism for tables or chairs according to claim 4, characterised in that the lower end of the sliding tube (2) has a stopper (25), against which stopper (25) the lower end or wedge (31) of the jacking tube (3) can abut.
  7. 7. The lifting mechanism for a table or a chair according to claim 1, wherein the side wall of the upper end of the sliding tube (2) is provided with a long-stroke limiting hole (22), the adjusting component (4) comprises a second elastic component (42) which is arranged at the lower end of the jacking tube (3) in a penetrating manner and can be embedded into the long-stroke limiting hole (22), the adjusting component (4) can drive the second elastic component (42) to move out of the long-stroke limiting hole (22), and the jacking tube (3) slides along the sliding tube (2) until the second elastic component (42) and the long-stroke limiting hole (22) are opposite to each other, and the end part of the second elastic component (42) is inserted into the long-stroke limiting hole (22).
  8. 8. The lifting mechanism for a table or a chair according to claim 7, wherein a plurality of adjusting limiting holes (23) are formed in the side wall of the lower end of the sliding tube (2), each adjusting limiting hole (23) is sequentially distributed along the length direction of the sliding tube (2), the adjusting assembly (4) can drive the second elastic piece (42) to move out of the adjusting limiting hole (23), and the jacking tube (3) slides along the sliding tube (2) until the second elastic piece (42) is opposite to any one of the adjusting limiting holes (23), and the end part of the second elastic piece (42) is inserted into the adjusting limiting hole (23).
  9. 9. Lifting mechanism for tables or chairs according to claim 8, characterised in that the adjustment limiting hole (23) and the long travel limiting hole (22) are both located in the side wall of one side of the sliding tube (2) and the positioning hole (21) is located in the side wall of the other side of the sliding tube (2).
  10. 10. Lifting mechanism for tables or chairs according to claim 8 or 9, wherein the side wall of the lower end of the bottom pipe (1) is provided with a plurality of adjusting yielding holes (13) or at least one adjusting yielding groove (14), and the end part of the elastic piece two (42) penetrating through the adjusting limiting hole (23) is positioned in one of the adjusting yielding holes (13) or one of the adjusting yielding grooves (14).

Description

Lifting mechanism for table or chair Technical Field The utility model belongs to the technical field of tables and chairs, and relates to a lifting mechanism for a table or a chair. Background The existing more and more desk chairs for noon break, one is that the desk plate is lowered to a lower position, the front end of the desk plate is turned downwards, the chair back of the chair is turned backwards, the legs of students can be placed on the desk plate, the desk plate is lowered downwards to give way to the chair back, the chair back is conveniently put down, the desk plate is lifted upwards, then the chair back of the chair is turned backwards, and after the desk plate is lifted, the chair back can be turned backwards to give up space, so that noon break is more convenient. The two modes all need a larger lifting stroke of the table leg, the lifting stroke of the existing table leg is limited, and the existing table leg is usually of a double-telescopic leg structure, but the lifting stroke of the double-telescopic leg structure is limited, so that the table leg cannot be lowered to a lower position or cannot be lifted to a higher position after lifting. Therefore, other lifting devices such as China patent application (issued publication number: CN 204970355U) have been developed to solve the problem of lifting travel, and a folding chair leg telescopic mechanism is disclosed, and comprises three rod pieces which are sleeved and can be movably stretched, wherein an elastic pin is arranged on the innermost rod of the three rod pieces, positioning points and a notch are respectively arranged on the middle rod and the outer rod, the elastic pin penetrates through the positioning points to lock the inner rod and the middle rod, the outer end of the elastic pin is exposed in the notch, and the outer rod can at least move up and down at the space distance arranged in the notch. The structure adopts three rod pieces which are sleeved and can be movably stretched, but as the spring pin of the innermost rod is always positioned at the positioning point to be locked, and the outer rod can move up and down in the space range of the notch, the outer pipe only provides a slidable space and is mainly used for folding the chair legs, so that the chair legs are convenient to fold and unfold, the outer pipe does not have the function of adjusting the height of the whole chair legs, the lifting stroke cannot be increased, the lifting stroke of the supporting legs is smaller, and enough space cannot be provided for students to comfortably rest in noon. Disclosure of utility model The utility model aims to solve the problems of the prior art and provides a lifting mechanism for a table or a chair, and the technical problem to be solved by the utility model is how to solve the problem of smaller lifting stroke of the prior lifting mechanism for the table or the chair. The aim of the utility model can be achieved by the following technical scheme: The lifting mechanism for the desk or chair comprises a bottom pipe, a sliding pipe inserted in the bottom pipe and a top pipe inserted in the sliding pipe, wherein the lower end of the bottom pipe is connected with a table foot of the desk or a chair foot of the chair, the upper end of the top pipe is connected with a table plate of the desk or a chair body of the chair, and an adjusting component capable of positioning or unlocking and positioning the lower end of the top pipe and the sliding pipe is arranged in the top pipe. The lifting mechanism can be independently used for a table, a chair or a combined table and chair. The push pipe is pulled up from the sliding pipe during normal use, and the push pipe is positioned between the sliding pipe and the lower end of the push pipe through the adjusting component, the push pipe is pulled up at the moment, the sliding pipe slides upwards along with the push pipe synchronously, the sliding pipe can be pulled out from the bottom pipe, the lower end of the bottom pipe is connected with the table foot or the chair foot of a desk, the lifting stroke of a lifting plate or a lifting plate is realized by arranging the mounting seat on the outer side wall of the bottom pipe, the first elastic component is under the action of elasticity, one end of the elastic component always has a trend of moving towards the inner part of the bottom pipe, the first elastic component moves towards the positioning hole under the action of elasticity when the positioning hole of the sliding pipe is opposite to the position giving hole, and one end of the first elastic component passes through the positioning hole, so that the push pipe can slide to a higher height from the ground, and simultaneously, the lifting plate or the chair body and the upper end of the desk can be lifted synchronously. Through the cooperation setting of push pipe, sliding tube and end pipe, can realize only need to the adjusting part unblock of push pipe and from top to bottom the