CN104373006A - Friction type locating hinge - Google Patents

Abstract

The invention relates to a friction positioning hinge capable of quickly positioning doors and windows after opening, comprising a first hinge piece, a second hinge piece, a locking sleeve, a nut, and a threaded rod; wherein the threaded rod is used as a hinge Part of the pin cooperates with the nut, and the nut is fixed in the locking sleeve. When the hinge is turned, the nut rotates relative to the threaded rod, driving the locking sleeve to move axially along the threaded rod. When the locking sleeve moves upwards, it contacts the hinge The tapered surface of the pin contacts, the size in the diameter direction becomes larger, and it is squeezed with the hinge sleeve, which increases the friction between the hinge pin, the locking sleeve and the hinge sleeve. When the friction force is greater than the hinge sleeve When the torsional force of the hinge is applied, the hinge is locked to achieve the purpose of fast positioning.

Description

Friction positioning hinge

technical field

The invention relates to a hinge capable of quickly positioning doors and windows after they are opened, in particular to a friction positioning hinge, which belongs to the technical field of hardware and building materials used in construction and furniture industries.

Background technique

In the prior art, the positioning method of the positioning hinge mostly adopts that there are corresponding and matching grooves and bumps on the periphery of the joint surface of the fixed hinge bushing and the rotating bushing, and the engagement of the grooves and the bumps is realized. Positioning function, the opening and closing of this positioning hinge needs to overcome the engagement of the groove and the projection, so that the hinge sheet is constantly misaligned up and down, the wear is serious, the positioning is not reliable, and the durability is low.

Contents of the invention

The main purpose of the present invention is to solve the above problems and deficiencies, and to provide a friction positioning hinge that is easy to use and can be positioned quickly by friction.

For realizing the above object, technical scheme of the present invention is:

A friction positioning hinge, which is composed of a first hinge piece, a second hinge piece, a locking sleeve, a nut, and a threaded rod; wherein, the bottom of the hinge pin of the first hinge piece is cylindrical, and the middle passes through A conical truncated rod is connected to the threaded rod. The inner cavity of the locking sleeve is a through hole, and the upper end is matched with the hinge pin. The nut is fixedly installed in the locking sleeve and fits with the threaded rod.

In the friction positioning hinge, the bottom of the threaded rod is connected with the hinge pin, the top end is conical, and the major diameter of the thread is smaller than the diameter of the hinge pin.

In the friction positioning hinge described above, the locking sleeve is provided with a through inner cavity, and its inner cavity structure matches the shape of the truncated cone of the hinge pin and the top end of the threaded rod, and the shape of the middle part of the inner cavity matches the The contour shape of the nut matches.

In the friction positioning hinge, the nuts are hexagonal nuts.

To sum up, in the friction positioning hinge described in the present invention, when the door and window are opened, the rotation of the hinge makes the locking sleeve slide in the hinge sleeve, and when it turns over a certain angle, the locking sleeve Wedge into the small gap between the hinge pin and the hinge sleeve, the friction between the hinge pin, locking sleeve and hinge sleeve increases, when the friction force is greater than the torsional force of the hinge, The hinge is locked; when the hinge is turned in the opposite direction, the locking sleeve slides in the opposite direction, sliding the end of the small gap between the hinge pin and the hinge sleeve, reducing the frictional force, and the door and window can be closed.

Description of drawings

Fig. 1 is an anatomical schematic diagram of the present invention;

Fig. 2 Structural diagram of the first hinge piece and the second hinge piece;

The sectional view, top view and A-A sectional view of Fig. 3 locking sleeve;

As shown in FIGS. 1 to 3 , the first hinge piece 1 , the second hinge piece 2 , the locking sleeve 3 , the nut 4 , and the threaded rod 5 .

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, a friction positioning hinge is composed of a first hinge piece 1, a second hinge piece 2, a locking sleeve 3, a nut 4, and a threaded rod 5. The first hinge piece 1 The hinge pin bottom is cylindrical, cooperates with the hinge sleeve of the second hinge piece 2, and its diameter is slightly smaller than the diameter of the hinge sleeve inner wall, and can rotate relatively. Connecting the hinge pin cylindrical part and the threaded rod 5 is a transitional truncated cone, the diameter of which is from large to small, and the angle of the cone is equal to the angle of the cone at the joint of the locking sleeve 3 . The diameter of the threaded rod 5 is smaller than that of the hinge pin, and the top end of the threaded rod 5 is a pointed point similar to a cone, matching the shape of the inner wall of the locking sleeve 3 . The nut 4 is installed inside the locking sleeve 3, and the locking sleeve 3 has a cavity with its shape matching. When the nut 4 and the threaded rod 5 rotate relative to each other, the locking sleeve 3 can be driven along the The axis moves up and down.

When the door and window were closed, the locking sleeve 3 was located at the position shown in the figure, and there was a gap between the hinge pin and the hinge sleeve, and the relative frictional force during rotation was very small. When the door or window is opened, the hinge pin and the hinge sleeve rotate relatively, so that the nut 4 and the threaded rod 5 also rotate relative to each other. During the rotation, the nut 4 and the locking sleeve 3 will be opposite to the threaded rod. 5 produces an upward displacement, and when it turns over a certain angle, the locking sleeve 3 wedges upwards into the gap between the hinge pin and the hinge sleeve, and the radial dimension of the locking sleeve 3 follows the top end of the threaded rod 5 and the The diameter of the frustum of the cone becomes bigger and bigger, and eventually it touches the inner wall of the hinge sleeve. As the locking sleeve 3 moves upwards, the rotational frictional force between the hinge pin and the hinged sleeve increases continuously, and when the frictional force is greater than the torsional force, the hinge is locked. At this time, only the hinge is rotated in the opposite direction, that is, when the door and window are closed, the locking sleeve 3 moves downward, the radial dimension becomes smaller, and the rotational friction between the hinge pin and the hinge sleeve decreases. Doors and windows can be closed.

As shown in Fig. 2, the hinge pin and the threaded rod 5 are fixedly connected, and after the connection, they maintain a consistent motion state as a whole.

As shown in Figure 3, the locking sleeve 3 is a cylindrical structure, and the internal cavity structure is matched with the hinge pin, the threaded rod 5, and the nut 4. For the convenience of processing and installation, it can be vertically cut into two symmetrical parts. Half, when installing, combine the two halves into a whole before use.

The friction positioning hinge can achieve automatic positioning after opening, and has the practical effects of windproof, quiet, simple and convenient. The friction positioning hinge uses the friction force generated by its own rotation to overcome the torsional force, and realizes the functions of fast positioning and fast closing. It replaces the original facilities such as hooks and door wedges, and the pre-installation position of the nut can be adjusted according to the opening and closing angle of the door and window to meet the opening needs of any angle, which greatly facilitates people's daily life.

Claims (4)

1. a friction-type Positioning hinge, is characterized in that: be made up of the first leaf of hinge (1), the second leaf of hinge (2), locking sleeve (3), nut (4), threaded rod (5); Wherein, be cylindrical bottom the hinge pin of the first leaf of hinge (1), middle by circular cone structure connecting thread bar (5), the inner chamber of locking sleeve (3) coordinates with hinge pin, threaded rod (5), nut (4) is fixedly mounted in locking sleeve (3), and coordinates in threaded rod (5).

2. friction-type Positioning hinge according to claim 1, is characterized in that: described threaded rod (5) bottom is connected with hinge pin, and top is conical, and the large footpath of screw thread is less than the diameter of hinge pin.

3. friction-type Positioning hinge according to claim 1, it is characterized in that: described locking sleeve is provided with through inner chamber in (3), its inner-cavity structure matches with the frustum-conical portion of hinge pin, the end shape of threaded rod (5), and the shape of inner chamber mid portion matches with the contour shape of nut (4).

4. friction-type Positioning hinge according to claim 1, is characterized in that: described nut (4) is hex nut.