RU2369708C2 - Lower plate - Google Patents

Abstract

FIELD: instrument making.

SUBSTANCE: invention is related to lower plate, which may be installed under joint pad of door lock, window catch or similar part. Lower plate comprises gripping facilities, which provide for transverse connection to edge of fastening hole. This connection prevents transverse displacement of lower plate, installed onto fastening base. Gripping facilities comprises one or more gripping surfaces. Gripping facilities are arranged as flexible in direction of lower plate height, providing for installation of lower plate on the fastening base surface itself.

EFFECT: invention makes it possible to avoid problem of joint pad fixation weakening.

9 cl, 6 dwg

Description

Technical field

The present invention relates to a lower plate, which can be installed under the butt plate of a door lock, a window shutter or the like.

State of the art

For example, a door lock or window lock or shutter in a window frame is opened and closed using a handle. The mounting hole through which the handle is connected to the lock / shutter mechanism is closed with a butt plate. The hole diameter is usually 40 mm. The butt plate is usually attached to another butt plate on the opposite side of the door or similar mounting base using fixing screws. In other words, the butt pads on opposite sides are screwed relative to the mounting base using fixing screws. There is no need to install a handle on the opposite side; in this case, there is only a butt plate. Another alternative is to attach the butt pads to the lock or latch housing using fixing screws. In this assembly, a single mounting hole is used for both the handle spindle and the mounting screws for the butt plate.

The problem is that the mounting base, which is usually wooden, undergoes deformation over time due to changes in temperature and atmospheric humidity. This causes a gradual weakening of the attachment of the butt plates, ultimately leading to a shift of the butt plates in the direction of the surface of the mounting base. The manufacturing tolerances of mounting screws and holes also affect loose attachment.

It should be noted that there are solutions with several holes for the handle spindle and plate attachment. In this case, the fixing screws are attached to the mounting base. In such solutions, the described problem is essentially less significant or not noticeable at all.

It is known that under the butt plate you can use the bottom plate. This bottom plate is used to install the return spring for the handle.

The aim of the invention is to eliminate the described problems, which, in particular, affects the method of mounting with a single hole. This objective is achieved by the invention disclosed in the independent claim. The dependent claims describe various embodiments of the invention.

SUMMARY OF THE INVENTION

The idea of the invention is that the lower plate itself includes gripping means (or clamping means) that provide lateral attachment to the edge of the mounting hole. This engagement prevents lateral movement of the lower plate mounted on the mounting base. The gripping means comprise at least one gripping surface, which has a length parallel to any diameter of the lower plate, and a length parallel to the height of the lower plate, forming beveled contact with the edge of the mounting hole and allowing installation within a specific diameter range of the mounting hole. The gripping means can also be bent in the direction of the height of the lower plate, providing the installation of the lower plate on the surface of the mounting base.

Brief Description of the Drawings

The invention will now be described in more detail with reference to the accompanying drawings, in which:

Figure 1 is a rear view of an example of a lower plate according to the invention;

Figure 2 is a front view of an example of a lower plate according to the invention;

Figure 3 is a side view of an example of a lower plate according to the invention;

Figure 4 is a cross-sectional view of an embodiment of a lower plate according to the invention;

5 is a cross-sectional view of another embodiment of a lower plate according to the invention; and

6 is a cross-sectional view of yet another embodiment of a lower plate according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a rear view of an embodiment of a lower plate 1 according to the invention. FIG. 2 is a front view of the same embodiment, and FIG. 3 is a side view of this embodiment. The reverse side of the lower plate refers to the side that, when assembled, is installed opposite the surface of the mounting base and mounting hole. The front side refers to the side of the lower plate on which the butt plate will be installed.

In the center of the lower plate for the spindle mounted through the lower plate, there is a hole 3. The sides of the lower plate preferably have auxiliary recesses 5 to enhance engagement with the butt plate mounted on the lower plate. In this embodiment, on the back surface of the lower plate there are four cavities 2 extending through the lower plate and thus forming holes. In these cavities 2, gripping means 6 are placed in such a way that they come into contact with the edge of the hole, which is directed towards the center point of the lower plate. A gap 10 remains between the other edges of the hole and the gripping means. When the lower plate is placed in the mounting hole on the mounting base, the gripping surfaces 9 of the gripping means 6 are pressed against the edges of the mounting hole, preventing lateral movement of the lower plate in the direction of the surface of the mounting base. The bottom plate also has holes 4 for fasteners, which are usually fastening screws. In addition, the figures show protruding parts on the rear surface of the lower plate near the central hole, forming a support for the socket of the installed spring.

Each gripping means 6 according to FIGS. 1-3 contains a flexible fastening part 8 through which the gripping means comes into contact with the lower plate body. The attachment portion is a thin strip of material, and the portion 7 formed by the gripping surface 9 of the gripping means is thicker than the attachment portion. The grip surface 9 has a length parallel to any diameter D of the lower plate and a length parallel to the height H of the lower plate. Thus, the grip surface 9 is a beveled surface, the end of which directed toward the lower plate is farther from the axis of the center point of the lower plate than the other end of the beveled surface which extends from the rear surface of the lower plate. Thus, the part 7 formed by the grip surface 9 is a protruding part on the rear surface of the lower plate. The gripping surface is directed from the center of the lower plate. The described lengths of the gripping surface allow the lower plate to be pressed into the holes of various sizes to the extent provided by the dimensions D of the gripping surfaces. The features of the engagement of the lower plate can be affected by varying the lengths of D and H. The fact that the gripping means can be bent in the direction of the height of the lower plate (length H) ensures that the lower plate is located on the surface of the mounting base. This allows you to install the outer part 11 of the rear surface of the lower plate opposite the surface of the mounting base.

Figure 4 shows a cross section of an embodiment of the invention according to Figure 1-3. If the gripping means 6 are in contact with the edge of the hole 3 directed towards the center point of the lower plate 1, then the attachment portion 8 provides a good lateral support, that is, a support in the direction of the surface of the mounting base.

FIG. 5 shows a cross-section of another embodiment of a lower plate according to the invention, in which the gripping means 12 come into contact with an edge of the hole directed to a side plate of the lower plate 13. In this embodiment, the attachment portion 14 also forms a transverse support, although it and is not as good a support as the support provided by the fastening part in the embodiment of the invention shown in FIG. 4.

Figure 6 shows a cross section of another embodiment of the invention. In this embodiment, the cavities 16 on the rear surface of the lower plate 15 do not pass through the lower plate. The attachment portion 18 of the gripping means 17 comes into contact with the lower portion of the cavity 16. The transverse support provided by the attachment portion 18 is not comparable with the embodiments of the invention shown in FIGS. 4 and 5.

Embodiments of the invention with Figures 4-6 can also be combined. For example, the holes in FIGS. 4 and 5 may be cavities similar to the cavities in FIG. 6. The gripping means may come into contact with any edge or lower part of the cavity on the back surface. Any single cavity can pass through the bottom plate.

The bottom plate may have one or more cavities for gripping means. In the lower plate with several cavities, 2 cavities or some of them can pass through the lower plate. A separate cavity on the rear surface forms a circle around the center point of the lower plate, creating gripping surfaces in different directions to prevent lateral movement. The circle can be either closed or partially open at a central point. If the circle is completely closed, then the cavity may not pass through the bottom plate. The shape of the circumferential cavity preferably follows the shape of the bottom plate, such as a circle, a rectangle, etc. In one embodiment of the invention, there are two semicircular cavities located on opposite sides relative to the center point of the bottom plate. It is important that any gripping means located in the cavity or cavities forms gripping surfaces in at least three directions visible from the center point of the lower plate. If you intend to use glue or a similar substance between the lower plate and the butt plate, there is no need for any cavities in the back surface of the lower plate, since gripping means can be located on the side plate of the lower plate.

1 and 2 show an embodiment of the invention with four holes for fasteners. The number of holes for fasteners may also be different. At least one hole is required. For example, if the butt plate is used only to close the mounting hole, then only one hole is required. In this case, the center hole of the bottom plate preferably functions as an opening for the fastener. It is also possible that the bottom plate does not have any central opening in assemblies in which the sole purpose of the butt plate is to close the mounting hole.

Several embodiments of the gripping means are also possible. The flexibility of the gripping means can be achieved, for example, with a device in which all gripping means can be bent in the direction of the height of the lower plate, that is, no single section is more flexible than other sections made in the gripping means. The gripping means can be formed, for example, by a strip of material having a uniform thickness, one side of which provides a gripping surface, or the end of which is beveled to provide a gripping surface. However, a particular bendable section in the gripping means is preferred. In other words, there are many alternatives for the design of gripping means. If the design of the gripping means is suitably aligned with the lower plate body, no separate cavities will be required for the gripping means. However, based on production technology, cavities are preferred. It is also preferred that the gripping surface is spline. The gripping means are preferably made of the same material as the lower plate body.

From the foregoing, it is obvious that the invention is not limited to the embodiments described herein, and it can be implemented in many other ways within the scope of the attached claims.

Claims (9)

1. The lower plate for the butt plate, characterized in that it contains gripping means containing at least one gripping surface located on the edge of the mounting hole to prevent lateral movement of the lower plate mounted on the mounting base, in the direction of the surface of the mounting base, however, the gripping surface has a length parallel to any diameter of the lower plate, and a length parallel to the height of the lower plate, and the gripping surface provides a hook the edges of the mounting holes of various sizes, while the gripping means are flexible in the direction parallel to the height of the lower plate, and thus ensure the placement of the lower plate on the surface of the mounting base, and the gripping means comprise a flexible fastening part through which the gripping means come into contact with the case of the lower plate, the fastening part being a thin strip of material, and the part formed by the gripping surface of the gripping means is thicker Than the attachment portion. 2. The lower plate according to claim 1, characterized in that it contains a cavity on the rear surface, forming a circle around the center point of the lower plate, and the gripping means are located in the cavity so that they come into contact with the lower part or any edge of the cavity. 3. The lower plate according to claim 2, characterized in that the gripping surface is a beveled surface, the end directed towards the lower plate being further from the axis of the center point of the lower plate than the other end of the beveled surface which extends from the rear surface of the lower plate. 4. The lower plate according to any one of claims 1 to 3, characterized in that it contains at least two cavities on the rear surface, and the gripping means are placed in the cavities so that they come into contact with the lower part or any edge cavities and form gripping surfaces in at least three directions visible from the center point of the lower plate. 5. The lower plate according to claim 4, characterized in that at least some of the cavities pass through the lower plate, and the gripping means are placed in the cavities in cooperation with any edge of the cavity. 6. The lower plate according to claim 5, characterized in that it contains at least one hole for fasteners. 7. The lower plate according to claim 4, characterized in that it contains at least one hole for fasteners. 8. The lower plate according to any one of claims 1 to 3 or 5-7, characterized in that the gripping surface is slotted. 9. The lower plate according to claim 4, characterized in that the gripping surface is spline.

Images