Single-column conference table

Abstract

A single-column conference table includes a base, a table top, and a lifting mechanism. The lifting mechanism includes an upright column having a bottom portion fixed to the base. A first accommodating chamber is defined inside the upright column. A lifting sleeve is provided in the first accommodating chamber. A second accommodating chamber is defined inside the lifting sleeve. The lifting sleeve is fixed to the table top. A driving unit is provided in the second accommodating chamber. The driving unit is a gas spring. A bottom of the gas spring is fixed to the base together with the upright column. A top of the gas spring is fixed to the support seat. The table top connected with the support seat can be lifted or lowered through the gas spring. The conference table is more stable and reliable during the lifting operation and can prevent the table top from rotating.

Claims

1. A single-column conference table, comprising: a base; a table top; and a lifting mechanism, the lifting mechanism including an upright column having a bottom portion fixed to the base, a first accommodating chamber being defined inside the upright column, a lifting sleeve being disposed in the first accommodating chamber, a second accommodating chamber being defined inside the lifting sleeve, a top end of the lifting sleeve being fixedly connected to the table top, a driving unit being disposed in the second accommodating chamber, the driving unit being a gas spring, a bottom of the gas spring being fixed to the base together with the upright column, a top of the gas spring being fixedly connected to a support seat disposed at the top end of the lifting sleeve, the table top being fixedly connected with respect to the support seat and thereby being lifted or lowered through the gas spring; wherein a top end of the upright column extends inwardly to form a limiting ring, a bottom end of the lifting sleeve has a buckle disposed thereon, at least the limiting ring blocks the buckle from leaving the first accommodating chamber, and the lifting sleeve is thereby prevented from disengaging the upright column.

2. The single-column conference table as claimed in claim 1, wherein a steel ball sleeve is disposed in the first accommodating chamber between the upright column and the lifting sleeve, and a steel ball of the steel ball sleeve contacts both an inner wall of the upright column and an outer wall of the lifting sleeve, the steel ball sleeve is thereby prevented from being displaced from the first accommodating chamber of the upright column by the buckle disposed at the bottom end of the lifting sleeve.

3. The single-column conference table as claimed in claim 1, wherein a wall of the upright column is formed with a through groove, a bearing is disposed in the through groove and is secured in the through groove by a bearing press plate mounted on an outer wall surface of the upright column, an outer wall surface of the lifting sleeve is formed with a milled surface matching a rolling surface of the bearing, the lifting sleeve only moves up and down and is prevented from rotating relative to the upright column by contact between the milled surface of the lifting sleeve and the corresponding rolling surface of the bearing, and a rolling direction of the bearing corresponds to a lifting direction of the lifting sleeve.

4. The single-column conference table as claimed in claim 1, wherein the gas spring is a lockable gas pressure rod.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view in accordance with an embodiment of the present invention;

(2) FIG. 2 is a cross-sectional view of the lifting mechanism in accordance with the embodiment of the present invention;

(3) FIG. 3 is an enlarged view of the circled area III of FIG. 2;

(4) FIG. 4 is an enlarged view of the circled area IV of FIG. 2; and

(5) FIG. 5 is a cross-sectional view taken along line V-V of FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(6) As shown in FIG. 1 and FIG. 2, a single-column conference table according to an embodiment of the present invention includes a base (1), a table top (2), and a lifting mechanism (3). The lifting mechanism (3) is installed between the base (1) and the table top (2) to implement height adjustment of the table top (2).

(7) Wherein, the lifting mechanism (3) includes a single upright column (3.1) having a bottom portion fixed to the base (1). The upright column (3.1) is tubular, and a first accommodating chamber (3.2) is defined inside the upright column (3.1) (as shown in FIG. 3). A top end of the upright column (3.1) extends inwardly to form a limiting ring (3.3).

(8) A lifting sleeve (3.4) is provided in the first accommodating chamber (3.2) of the upright column (3.1). The lifting sleeve (3.4) is tubular, and a second accommodating chamber (3.5) is defined inside the lifting sleeve (3.4) (as shown in FIG. 3). A bottom end of the lifting sleeve (3.4) is a free end that can be lifted or lowered. The outer wall of the bottom end of the lifting sleeve (3.4) is provided with a C-shaped buckle (3.6) (as shown in FIG. 4). The C-shaped buckle (3.6) cooperates with the limiting ring (3.3) to prevent the lifting sleeve (3.4) from coming off the first accommodating chamber (3.2) of the upright column (3.1), thereby limiting the lifting height of the lifting mechanism (3). A top end of the lifting sleeve (3.4) is provided with a support seat (3.7). The support seat (3.7) is fixedly connected to the table top (2). The diameter of the bottom of the support seat (3.7) is greater than the diameter of the first accommodating chamber (3.2), thereby controlling the lowest position of the table top (2).

(9) A driving unit is provided in the second accommodating chamber (3.5) of the lifting sleeve (3.4). The driving unit is a gas spring (3.8). The bottom of the gas spring (3.8) is fixed to the base (1) together with the upright column (3.1), and the top of the gas spring (3.8) is fixedly connected to the support seat (3.7). The table top (2) connected with the support seat (3.7) is lifted or lowered by the action of the gas spring (3.8). The gas spring (3.8) is a lockable gas pressure rod.

(10) In order to ensure the smooth lifting of the lifting mechanism (3), a steel ball sleeve (3.9) is provided between the upright column (3.1) and the lifting sleeve (3.4) (as shown in FIG. 3). The steel ball sleeve (3.9) is fitted on the lifting sleeve (3.4) and prevented from coming off through the C-shaped buckle (3.6) at the bottom of the lifting sleeve (3.4). Since the steel balls of the steel ball sleeve (3.9) are in contact with the inner wall of the upright column (3.1) and the outer wall of the lifting sleeve (3.4), the steel balls play a rolling driving action when the lifting sleeve (3.4) is lifted or lowered, such that the table top can be lifted or lowered smoothly, being less likely to be jammed.

(11) Since the single upright table (3.1) is used to support the table top (2) and the upright column (3.1) and the lifting sleeve (3.4) are coaxially disposed, the table top (2) is prone to rotate during the actual use, affecting the normal use of the conference table. As shown in FIG. 5, the wall of the upright column (3.1) is formed with a through groove, and a laterally arranged bearing (3.10) is provided in the through groove. The bearing (3.10) is secured in the through groove through a bearing press plate (3.11) mounted on the outer wall surface of the upright column (3.1). The outer wall surface of the lifting sleeve (3.4) is formed with a milled plane (3.12) matching the rolling surface of the bearing (3.10). Due to the interference between the milled plane (3.12) and the surface of the bearing (3.10), the lifting sleeve (3.4) can only move up and down, but cannot rotate along the central axis relative to the upright column (3.1). Besides, the rolling direction of the bearing (3.10) is consistent with the lifting direction of the lifting sleeve (3.4). This prevents relative rotation between the lifting sleeve (3.4) and the upright column (3.1), making the table top (2) of the conference table more stable.

(12) Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.