CN106974458B - Locking mechanism - Google Patents

Abstract

The invention relates to a locking mechanism which comprises a support frame, a locking rod and a sliding sheet, wherein the sliding sheet is arranged in the support frame in a penetrating way, the locking rod penetrates through the side wall of the support frame, the locking rod is connected with the support frame through threads, and the sliding sheet is clamped between the locking rod and the inner wall of the support frame. According to the invention, the locking bar is screwed down, so that the locking block on the locking bar and the support frame clamp the sliding sheet, the sliding of the sliding sheet is limited, the sliding sheet can move along the sliding rail on the locking bar by unscrewing the locking bar, and the position adjustment is completed.

Description

Locking mechanism

Technical Field

The invention relates to a chair tray structure, in particular to a locking mechanism.

Background

The chair is used as a living tool which is indispensable for the living and office environment, so that the chair has higher and higher comfort requirements for the living and the office environment, and has obvious improvement requirements for the comfort and operability of the chair on the premise of working efficiency, the chair back of the general chair at present has a tilting function and can be locked at a specific position, but the locking mechanism of the existing chair is short in general service life, easy to wear and easy to cause the condition of locking failure.

For example, chinese patent (patent number: ZL2013100873272, patent name: a structure of a tray capable of being reclined) discloses a locking structure, which enables a sliding sheet to be clamped between a limiting end and a sleeve or the sliding sheet to be expanded to an adjacent clamping piece by enabling a corresponding working surface to act on a baffle plate so as to lock the sliding sheet, thereby limiting the current position of a chair back fixing frame, and enables the sliding sheet to be loosened from a guide shaft when another working surface acts on the corresponding baffle plate, thereby enabling the chair back fixing frame to be rotated by a proper external force or enabling the chair back fixing frame to be restored to the original position by the elastic action of a clamp spring; in the mechanism, as the two working surfaces are frequently switched, a convex angle between the two working surfaces is easy to wear, and the locking failure is easy to cause.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a locking mechanism which is not easy to wear, long in service life and stable in locking effect.

In order to achieve the above object, the present invention adopts the following technical scheme:

the utility model provides a locking mechanism, includes support frame, latch lever and gleitbretter, the gleitbretter runs through the setting in the support frame, the latch lever runs through the lateral wall of support frame to the latch lever passes through threaded connection with the support frame, the gleitbretter is held between latch lever and support frame inner wall.

As a preferable scheme: the sliding vane is provided with a strip-shaped sliding rail, the locking rod penetrates through the sliding rail, the locking rod is provided with a step surface, and the locking rod clamps the sliding vane between the step surface and the inner wall of the support frame.

As a preferable scheme: the locking rod consists of two cylinders with different diameters, a step surface is formed at the joint of the two cylinders, a locking block is further arranged on the step surface, and the sliding sheet is clamped between the locking block and the inner wall of the support frame. The locking block is arranged between the locking rod and the sliding sheet, so that the friction force between the sliding sheet and the locking rod is increased, and the locking effect is enhanced.

As a preferable scheme: the two sides of the support frame are also provided with sleeves, the inner walls of the sleeves are provided with threads, the front ends of the locking rods are also provided with threads, and the locking rods are inserted into the sleeves and are matched with the clamping sliding sheets or the loosening sliding sheets through threads.

As a preferable scheme: still be equipped with through-hole and dead axle on the gleitbretter, the dead axle includes axle sleeve and axostylus axostyle, the axostylus axostyle runs through the through-hole on the gleitbretter, the axle sleeve cover is established on the axostylus axostyle, and offsets with the gleitbretter.

As a preferable scheme: the sliding sheets are at least two, a first spacer is sleeved on the locking rod between the adjacent sliding sheets, and a second spacer is sleeved on the shaft rod between the adjacent sliding sheets.

As a preferable scheme: the first spacer adopts square, the second spacer adopts circular.

According to the invention, the locking bar is screwed down, so that the locking block on the locking bar and the support frame clamp the sliding sheet, the sliding of the sliding sheet is limited, the sliding sheet can move along the sliding rail on the locking bar by unscrewing the locking bar, and the position adjustment is completed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic exploded view of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, 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, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The locking mechanism as shown in fig. 1 and 2 comprises a support frame 81, a locking rod 82 and a sliding sheet 83, wherein the sliding sheet 82 is arranged in the support frame 81 in a penetrating mode, the locking rod 82 penetrates through the side wall of the support frame 81, the locking rod 82 is connected with the support frame 81 through threads, and the sliding sheet 83 is clamped between the locking rod 82 and the inner wall of the support frame 81.

The sliding sheet 83 is provided with a strip-shaped sliding rail 831, the locking rod 82 penetrates through the sliding rail 831, the locking rod 82 is provided with a step surface 821, and the locking rod 82 clamps the sliding sheet 83 between the step surface 821 and the inner wall of the support frame 81.

The locking rod 82 is composed of two cylinders with different diameters, a step surface 821 is formed at the joint of the two cylinders, a locking block 84 is further arranged on the step surface 821, and the sliding sheet 82 is clamped between the locking block 84 and the inner wall of the support frame 81.

Sleeve 85 is further arranged on two sides of the support frame 81, threads are arranged on the inner wall of the sleeve 85, threads are also arranged at the front end of the locking rod 82, and the locking rod 82 is inserted into the sleeve 85 and is matched with the clamping sliding sheet or the loosening sliding sheet through threads.

The sliding vane 83 is further provided with a through hole 832 and a fixed shaft 86, the fixed shaft 86 comprises a shaft sleeve 861 and a shaft rod 862, the shaft rod 862 penetrates through the through hole 832 of the sliding vane 83, and the shaft sleeve 861 is sleeved on the shaft rod 862 and abuts against the sliding vane 83.

The sliding sheets 83 are at least two, a first spacer 87 is sleeved on the locking rod 82 between the adjacent sliding sheets 83, and a second spacer 88 is sleeved on the shaft rod 862 between the adjacent sliding sheets 83. The first spacer 87 is square, and the second spacer 88 is circular.

When the sliding device is used, the locking rod is screwed, the sliding sheets are extruded by the locking blocks on the locking rod to approach the support frame, the mutual extrusion friction force of the sliding sheets is increased, and the sliding sheets cannot slide along the sliding rail on the locking rod, so that the position locking effect is realized; when the locking rod is unscrewed, the distance between the sliding sheets is increased, the friction force between the adjacent sliding sheets is smaller, and the sliding sheets can freely slide on the locking rod along the sliding rail, so that the position adjustment function is realized.

It should be noted that the above embodiments are merely representative examples of the present invention. Many variations of the invention are possible. Any simple modification, equivalent variation and modification of the above embodiments according to the principles of the present invention should be considered to fall within the scope of the present invention.

Claims (4)

1. A locking mechanism, characterized in that: including support frame (81), latch lever (82) and gleitbretter (83), gleitbretter (83) run through and set up in support frame (81), latch lever (82) run through the lateral wall of support frame (81) to latch lever (82) and support frame (81) pass through threaded connection, gleitbretter (83) are held between latch lever (82) and support frame (81) inner wall, latch lever (82) are constituteed by two cylinders that the diameter is different, the junction of two cylinders forms step face (821), still be equipped with latch block (84) on step face (821), gleitbretter (83) are held between latch block (84) and support frame (81) inner wall, the both sides of support frame (81) still are equipped with sleeve (85), be equipped with the screw thread on the inner wall of sleeve (85), the front end of latch lever (82) also is equipped with the screw thread, latch lever (82) inserts in sleeve (85) and presss from both sides tight gleitbretter or unclamp the gleitbretter through screw-thread fit, be equipped with a rectangular slide rail (831) on slide rail (82), the locking rod (82) clamps the sliding sheet (83) between the step surface (821) and the inner wall of the support frame (81).

2. A locking mechanism as claimed in claim 1, wherein: still be equipped with through-hole (832) and dead axle (86) on gleitbretter (83), dead axle (86) include axle sleeve (861) and axostylus axostyle (862), axostylus axostyle (862) run through-hole (832) on gleitbretter (83), axle sleeve (861) cover is established on axostylus axostyle (862), and offsets with gleitbretter (83).

3. A locking mechanism as claimed in claim 2, wherein: the sliding sheets (83) are at least two, a first spacer (87) is sleeved on the locking rod (82) between the adjacent sliding sheets (83), and a second spacer (88) is sleeved on the shaft rod (862) between the adjacent sliding sheets (83).

4. A locking mechanism according to claim 3, wherein: the first spacer (87) is square, and the second spacer (88) is round.