RU2671761C2 - Stepped door stop - Google Patents

Abstract

FIELD: construction.SUBSTANCE: provided is a stepped door stop that contains: progressive indexing rod (1) provided at one end with hole (a) for fastening with rivet (3) and at the other end with bumping section (t) that is horizontally T-shaped, channel (c) is provided on the two opposite surfaces of said rod, in which there is recess (b) for positioning during mounting and indexing recess (d1, d2…dn); substantially parallelepipedic shaped slide (2) provided with opening (f1) and slots (f2) arranged symmetrically in respect to its edges with a longitudinal cylindrical channel perpendicular to the axis of opening (f1), and two symmetrically arranged screw heads (10a) and (10b) for fastening to the door are inserted in slider (2); two indexing balls (4a) and (4b); two compression springs (6a) and (6b); two caps (8a) and (8b) provided with milled areas (8f') and (8a''); two U-shaped safety locks (7a) and (7b); fastening part (9) provided with oval-shaped hole (o) for fastening with a screw on the pillar. Said progressing indexing rod (1) has a symmetrical design with progressive steps towards bumping section (t), which are located on two opposite sides and define plane-parallel surfaces (s1, s2, s3) containing channel (c), which is common to said surfaces and in which positioning recesses (b) and indexing recesses (d1, d2…, d3) having a spherical or conical shape are machined.EFFECT: stepped door stop is proposed.10 cl, 14 dwg

Description

STEP DOOR LOCK

The invention relates to a step door lock designed for the equipment of any type of door, in particular, for the equipment of car doors.

Given that in modern conditions, manufacturers focus on improving efficiency in terms of cost of components, this invention is aimed at creating the simplest and most economical solutions to reduce the total cost of production.

In the patent literature you can find a relatively wide range of design and technical solutions for step door locks.

Thus, document EP 0643184 (B1) relates to a car door fixing device that comprises a hinge-type support for mounting on a car door pillar and a holding unit that is placed and secured to the door. The fastening hinge and the holding unit are connected to each other so that they are mutually movable by means of a locking device defining certain opening positions of the car door.

The division into different rotation positions of the door is carried out by means of a locking ball, which is in constant contact, by means of special springs, with profile edges of the locking device.

The design of the door fixing device presented in patent document FR 2852994 (B1) describes a mechanism for fixing the doors of a car, consisting of a rod equipped with profiles (type of cam) of the step-by-step roller, placed in the housing and providing a sliding function. The pressure of the roller on the profile surfaces is provided by a spring made of polymer. The outer surface of the stepping roller is coated with a polymer layer having self-lubricating properties.

DE 10251174 (A1) discloses a latch consisting of a rod of thermoplastic material with a metal insert provided with stepwise recesses for the hemispherical part, also of thermoplastic material, which is actuated by a spring, while everything is placed in a holding case. The spring of the step-by-step movement part is actuated by means of a threaded cover fixed inside the holding body, in particular inside the holes for sliding the springs therein.

Patent document US 2004/0251696 (A1) proposes a solution for a door lock consisting of a core of thermoplastic material with a metal insert, while there are two non-profiled sliding planes. The holding housing comprises a spring moving a movable metal oval cam rotated through a symmetrical angle with respect to the vertical axis during the operation of the door. The door is fixed at the moment of maximum compression of the spring. In the neutral position, i.e. when the smallest thickness of the shaft is between the two cams, the spring has a minimal load on the cams.

In patent document US 2012/0233813 (A1), a solution is proposed for a door lock, consisting of a step-by-step rod of thermoplastic material with a metal insert, two sliding planes, each of which is made with recesses and protrusions. The locking device consists mainly in the design adopted for the holding housing, in which a pair of two symmetrically mounted non-metallic parts, for example, of a flexible elastomeric material and a self-lubricating thermoplastic material, exerts a compressive load on the step-by-step rod.

US Pat. No. 7,793,387 (B1) proposes a solution for a door lock, which consists essentially of, as in the solutions described above, of a lever arm and a holding body in which, in the upper position, one pressure spring and one hemispherical part mounted in the head of the spring. On the upper surface along the entire width of the rod lever, profile depressions for stepwise movement and protrusions are provided, and stepwise change in the position of the hemispherical part is achieved by entering stepwise displacement deepenings under the action of a compression spring.

These solutions, in some cases, have the disadvantage of significant difficulties associated with the manufacture and installation of components, which in most cases require a sufficiently high degree of accuracy.

The technical problem solved by this invention is to create a stepped door lock, having an average design complexity of the retaining mechanism, which provides the user with a high degree of comfort when opening and closing the door, while ensuring the stability of the door in open and closed positions.

The proposed stepped door lock contains:

- a step-by-step movement rod with increasing size, on both surfaces of which a recess is positioned symmetrically for positioning during installation, as well as step-by-step recesses located in a common channel along the longitudinal axis of the step-by-step rod with increasing size;

- a slider equipped with a sliding window for the incremental displacement rod with increasing size, as well as a longitudinal channel running perpendicular to the axis of the sliding window.

- two springs of variable progressive stiffness, two spherical parts, such as bearing balls, and two caps equipped with fuses that provide compression of the spring.

At one end, a stepping rod with increasing size is fixed with a rivet and a metal fastener, which in turn is fixed to the rack with a screw. The other end is equipped with a motion limiter in the form of a thrust portion. The slider is generally made of self-lubricating thermoplastic and is equipped with two mounting holes for mounting inside the door. The incremental displacement rod is made of self-lubricating thermoplastic and contains a metal insert along its entire length, including in the thrust portion.

The part used to fasten the assembly to the rack is equipped with an oval through hole for the screw, which allows vertical adjustment during installation. Similarly, the width of the window made in the slider provides a small tolerance with respect to the width of the incremental displacement rod with increasing size during installation and operation.

The invention has the following advantages:

- provides the user with reliable angular fixation of the door to the opening position, so that the risk of the influence of wind and air flows is reduced;

- allows you to use standard components;

- is a highly reliable solution and does not require special maintenance;

- You can be used in various fields, for example: in the automotive industry, shipbuilding, aircraft industry, as well as in civil and industrial construction or for domestic purposes.

Embodiments of the proposed step door lock made for use in the automotive industry are described below. The description is given with reference to the drawing, where:

FIG. 1 is a general view of the proposed stepped door lock;

FIG. 2 is a top view of the incremental displacement rod with increasing size;

FIG. 3 is a side view of the incremental displacement rod with increasing size;

FIG. 4 is a cross-sectional view of a step-by-step rod with increasing size in an area corresponding to a recess for positioning during installation;

FIG. 5 is a cross-sectional view of a step-by-step rod with an increasing size in the region of a recess for positioning;

FIG. 6 - axonometric view of the slider;

FIG. 7 is a detailed view of a slider;

FIG. 8 - front view of the slider;

FIG. 9 is an image of a sliding part with which sliding balls can be replaced;

FIG. 10 is a perspective view illustrating a stepped door lock according to an embodiment of the invention, in which covers with slots not cut by the cutter are used;

FIG. 11 is a top view of a lid with protrusions;

FIG. 12 is a sectional view of a cap with protrusions;

FIG. 13 is a plan view of a slider in an embodiment of the invention in which caps with protrusions are used;

FIG. 14 is a sectional view of a longitudinal channel of a slider equipped with caps in an embodiment of the invention in which caps with protrusions are used.

As shown in FIG. 1, the proposed step lock of the door contains a rod 1 of incremental movement with increasing size, equipped with a metal insert 5, a slider 2, one rivet 3 for fixing the rod 1 in the fastener 9 for mounting on a rack, a pair of balls 4a and 4b, driven by the corresponding pair springs 6a and 6b with progressive stiffness, the fixing of which in the body of the slider is achieved using a pair of caps 8a and 8b, the corresponding pair of U-shaped fuses 7a and 7b inserted into the slots f2, made in the body of the slider 2.

The incremental displacement rod 1, as shown also in FIG. 4 and 5, has a constant width and is made with a metal insert 5 extending centrally along the entire length of the rod 1, including inside the supporting thrust part t, which is coated on the outside with thermoplastic material, for example, by injection molding.

The rod 1 incremental movement with increasing size in the General case, may have a straight or curved shape, depending on the specific requirements for the door latch.

The rod 1 of stepwise movement with increasing size symmetrically, on both parallel planes of the sliding surfaces, is provided with a channel c for guiding the balls 4a and 4b, a hole a for fastening with rivet 3, a recess b for positioning during installation and recesses d1, d2 ... dn of stepwise movement, providing the required reliable angular positioning of the door when it is opened and closed, as well as by the thrust part t, as shown in FIG. 2. The number of recesses d of the stepwise movement is structurally limited and depends on the number of required positions required by the user when opening and closing the door. In the general case, the number of stepwise recesses is limited to values from 2 to 3.

On two opposite sides of the incremental step rod 1 with increasing size, a symmetrical step structure of three stepped surfaces with parallel planes, designated as s1, s2 and s3, arranged in increasing thickness of the incremental step rod 1 with increasing size is provided, as shown in FIG. 3. When opening the door, these surfaces provide an increasingly reliable angular positioning of the door due to the compressive force exerted by the springs 6a and 6b with progressive stiffness.

The body of the slider 2 of FIG. 6 is made of a thermoplastic material, such as polyamide with fiberglass hardening, has a symmetrical design and is equipped with a sliding window f1 having a width slightly larger than the constant width of the incremental displacement rod 1 with an increasing size, which makes it possible to carry out necessary adjustments in the horizontal plane during installation and operation . In the body of the slider 2, the heads of the fixing screws 10a and 10b are inserted symmetrically and used to fasten the slider inside the door.

On the plane opposite the screws 10a and 10b, the slider 2 has slots f2 at its ends, providing access for installing U-shaped fuses 7a and 7b in the sections of the slots 8f and 8f, milled in the covers 8a and 8b, which perform the function of coaxial positioning of the springs 6a and 6b with progressive stiffness in the corresponding longitudinal cylindrical channel and balls 4a and 4b inside the slider 2.

A longitudinal cylindrical channel, designed to provide coaxial placement of balls 4a and 4b, springs 6a and 6b, and covers 8a and 8b, is perpendicular to the axis of the window f1 cut in the slider 2.

Balls 4a and 4b, performing the function of step-by-step elements included in the recesses d1, d2 ... dn of step-by-step movement, can be made in the form of bearing balls with a fairly smooth surface with a low coefficient of friction both when rolling along the guide channel c and at the entrance in the recesses and exit from the recesses d1, d2 ... dn.

In another embodiment of the invention, the balls 4a and 4b are replaced by a part 4a 'and 4b', respectively, consisting of a cylindrical part mounted on the inner diameter of the springs 6a and 6b, a circular flange and a hemispherical end that provides stepwise movement, as shown in FIG. 9.

According to FIG. 1, a fastener 9 for attaching the assembly to the rack is provided with a hole o in the form of an oval elongated in the vertical direction, intended for the passage of the screw used for fastening to the rack (not shown in the drawing). During installation, the oval hole o provides the possibility of small vertical adjustment.

Similarly, the width of the window f1 made in the slider 2 provides a small mounting tolerance with respect to the constant width of the incremental displacement rod 1 with increasing size.

The thrust part t, available at one end of the incremental displacement rod 1 with increasing size, has a T-section in the horizontal plane and provides a maximum door opening angle. The locking by means of a stop is provided by the coplanar front surfaces s4 and s5 of the slider 2, which bounds the sliding window f1 vertically.

In another embodiment, as shown in FIG. 10, the step lock of the door contains, instead of covers 8a and 8b and U-shaped fuses 7a and 7b, covers 8a 'and 8b' with protrusions, without external milled sections of the slots 8f and 8f 'provided in the first embodiment.

The covers 8a 'and 8b' are fixed in the longitudinal channel of the slider 2 by means of at least three projections ra located radially at the same interval with an angle of 1200 on the outer circumference of these covers, as shown in FIG. 11 and 12.

Each of the protrusions ra during installation and tension of the springs 6a and 6b is included in the corresponding longitudinal guide groove pb, grooved at the inputs of the longitudinal channel of the slider 2. The covers 8a 'and 8b' are then secured in the slider 2 by turning them, in particular by turning the three protrusions of the ra in the radial channel pc, the shape of which corresponds to the protrusions of pa, and the radial channel pc is made around the circumference inside the longitudinal channel of the slider 2, as shown in FIG. 13 and 14.

The longitudinal grooves pb are made up to the radial channel pc, so that when the covers 8a 'and 8b' are inserted into the slider 2, the protrusions of pa can be moved forward in the grooves pb and then rotated in the radial channel pc.

To carry out installation with minimal effort, the covers 8a 'and 8b' are provided with a tool recess h, for example of a rectangular or hexagonal shape, for manual or mechanical rotation with a screwdriver.

Claims (13)

1. Step door lock, characterized in that it contains: - a step-by-step rod (1) with increasing size, provided with a hole (a) at one end for fastening with a rivet (3), and at the other end with a thrust part (t) having a horizontal T-shape, moreover, on two opposite surfaces a step-by-step displacement rod (1) with increasing size, a channel (c) is made having a recess (b) for positioning during installation and a recess (d1, d2 ... dn) of step-by-step movement; - a slider (2) essentially in the form of a parallelepiped, equipped with a window (f1) for mounting the rod (1) of stepwise movement with increasing size, a longitudinal cylindrical channel perpendicular to the axis of the window (f1); while in the longitudinal cylindrical channel of the slider (2) there are two balls (4a, 4b) of stepwise movement or parts (4a ', 4b') with a hemispherical end that provides stepwise movement, guided by channel (c), configured to enter the recesses ( d1, d2 ... dn) of step-by-step movement and compression, spring-loaded by two springs (6a, 6b), which are held in the longitudinal cylindrical channel by two covers (8a, 8b); at the same time, two symmetrically located screw heads (10a, 10b) are introduced into the slider (2) for fastening to the door; and - a fastener (9) provided with a hole (o) for fastening with a screw on the rack. 2. A step lock according to claim 1, characterized in that the step-by-step rod (1) with increasing size is made symmetrically with steps of increasing size in the direction of the thrust part (t) located on two opposite sides and defining flat parallel surfaces (s1, s2 , s3) containing the specified channel (c), which is common to the indicated surfaces, the positioning recess (b) and the recesses (d1, d2 ..., dn) of stepwise movement are made with a spherical or conical shape. 3. The step lock according to claim 1, characterized in that the width of the window (f1) made in the slider (2) provides, during installation and operation of the step lock, a horizontal tolerance with respect to the constant width of the shaft (1) of incremental movement with increasing size. 4. Step clamp according to any one of paragraphs. 1-3, characterized in that the springs (6a) and (6b) belong to the type of springs with variable progressive stiffness. 5. Step clamp according to any one of paragraphs. 1-3, characterized in that the hole (o) of the fastener (9) is made in the form of an oval, elongated in the vertical direction and providing during installation the ability to adjust in the vertical direction. 6. Step clamp according to any one of paragraphs. 1-3, characterized in that the slider (2) has slots (f2) at its ends that provide access for installing U-shaped fuses (7a, 7b) in the milled sections (8f, 8f) made in the covers (8a, 8b). 7. Step lock according to any one of paragraphs. 1-3, characterized in that the covers (8a, 8b) have at least three protrusions (pa) located radially with the same interval with an angle of 120 ° on the outer circumference of said covers (8a, 8b). 8. Step clamp according to any one of paragraphs. 1-3, characterized in that the covers (8a ', 8b') have tool recesses (h) for manipulating with a screwdriver. 9. The stepped lock according to any one of paragraphs. 1-3, characterized in that the longitudinal channel of the slider (2) has at its ends at least three grooves (pb) made with the same interval along the generatrix of the longitudinal channel of the slider (2), and a radial channel (pc) made on a circle inside the longitudinal channel of the slider (2). 10. Step clamp according to any one of paragraphs. 1-3, characterized in that each of the parts (4A ', 4b') contains a cylindrical part mounted on the inner diameter of the springs (6a, 6b) and a circular thrust flange.

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