RU7024U1 - CLOSING RING OF THE HEATER THERMOSTAT FASTENING DEVICE - Google Patents

Abstract

1. A closing ring of the heater thermostat mounting device, consisting of at least two parts, which together form a closed ring, the mating parts of which are connected by a snap connection, characterized in that it contains a deflection device (15, 17) that converts the radially directed difference of forces, applied in a given direction between the mating parts (4, 5), into a tangentially directed tensile force.2. Ring according to claim 1, characterized in that the snap connection (6) has an elastic latch (7) with a hook (8) placed in a cavity (10) closed at least in the axial direction on both sides and in the circumferential direction on the outside side, while the hook (8) grabs the threshold (9) located in the cavity (10).3. Ring according to claim 1 or 2, characterized in that the deflector (15, 17) has on one of the two parts (4) a protrusion (15) essentially directed circumferentially and interacting with the recess (17) of the other part (5) , and at least one of these two elements - the protrusion (15) and the recess (17) - has a beveled counter surface (16, 18).4. The ring according to claim 3, characterized in that the projection (15), the chamfered counter surface (16) and the recess (17) have an opposite surface (18) substantially parallel to the chamfered counter surface (16).5. Ring according to claims 2 - 4, characterized in that the threshold (9) is located on the radially outer side of the recess (10).6. A ring according to claim 5, characterized in that the opposing surface (16) or the opposite surface (18) has, on the part (4) provided with the threshold, a section directed radially outward.7. Ring according to claims 2 - 6, characterized in that the protrusion (15)

Description

: CLOSING RING OF A HEATER THERMOSTAT FASTENING DEVICE FITTING The invention relates to a closing ring of a heater thermostat attachment device, comprising at least two parts that form a connected ring due to the mating parts being joined by a snap connection. Heater thermostats are often connected to their respective radiators using a cap nut, which can be, for example, hex or round. This nut is surrounded by a closing ring. The closing ring can improve the appearance since it can be properly matched to the heater thermostat. Another objective is to prevent the heater thermostat from being removed. The closing ring prevents the thief from accessing and manipulating the cap nut, since the closing ring rotates freely on the cap nut, so that manipulation of the nut is prevented. In addition, the closing ring prevents manipulation of the thermostat mounting. Therefore, unauthorized adjustments to the thermostat cannot be made. For maintenance personnel troubleshooting a heating system, it is important to know whether unauthorized manipulation was performed. Closing rings of this type are known. For example, a thermostat is known from German document No. 7902690 U1, especially for controlling a radiator valve, provided with a locking ring to prevent unauthorized removal. The closing ring consists of two parts, forming a vicious circle, having the same design and connected using a snap connection. At the end of the first part there is an elastic latch with a hook, which

can catch on to another part, going beyond the threshold. The other part has two centering pins located next to each other, extending in the axial direction and entering the corresponding holes in the first part. The diameter of the closing ring is large enough for it to rotate on the cap nut.

Other closing rings are known from German documents Nos. 3102335 A1 and 3109877 C2. In both cases, a snap ring is added to the closure ring, typically made of synthetic material, which closes the closure ring circumferentially. In one case, the retaining ring is made in the form of a spring ring, which must be parted for removal. In another case, the closing ring is axially suspended on the retaining ring, and then latched in the desired position, and the resulting connection can only be unfastened by breaking.

The effectiveness of the last two described closing rings in terms of preventing theft is relatively high. However, their installation is difficult, and special tools are required for dismantling. In addition, these rings are not able to prevent theft. By breaking the closure ring, access to the cap nut can be obtained. And although such destruction does not occur often, they can hardly be prevented in the event of deliberate theft. For economic reasons, it is better to have a closing ring of a simple design, which can be installed without difficulty and which can provide protection against manipulation without the use of tools.

This goal is achieved by using a closing ring of the type described, equipped with a guide or deflecting device that converts the difference of radial forces,

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applied in a given direction between the mating parts, in a tangentially directed tensile force.

Everyone who seeks to dismantle the closing ring usually tries to shift the parts in relation to each other in the radial direction in the place of their mating docking nodes. As a result, the snap joint can be unfastened. The latch with the hook can be shifted radially inward so that the hook disengages from the corresponding threshold and can be pulled away from it.

The deflecting device does not necessarily prevent the radial movement of both parts at their junctions. However, the energy of pulling or stretching in the circumferential direction between the two parts thus increases. The occurrence or creation of a relative radial displacement of this kind causes the tension of the hook located beyond its threshold. In this case, a significantly larger radial force is required to release the hook due to the threshold. However, it is impossible to exert such force outside. Therefore, anyone trying to remove the closing ring will not be able to unfasten the snap-on device. Experience shows that in this case, the attacker relatively quickly abandons his intentions. Thus, in practice, the closing ring provides protection against theft or manipulation.

Obviously, the closure ring can be removed with a tool. However, this tool will leave marks on the closing ring. In this case, the closing ring will serve as a carrier of information for technical personnel who will immediately recognize if there has been a manipulation of the heater thermostat. Finally, the closing ring is convenient to install. To install it, just click

snap connection. For this, the mating parts are moved to each other in the circumferential direction. Radial movement in relation to each other is not required. Thus, the deflecting device does not affect the assembly process.

The snap connection preferably has an elastic latch with a hook placed in the cavity, closed at least in the axial direction on both sides and in the circumferential direction from the outside, so that the hook captures a threshold located in the cavity. The fact that the snap joint is hidden makes it difficult to open. Only those who know the internal structure of the snap-on connection have the ability to unfasten it without much effort. To ensure the covert placement of the snap-in connection, it is sufficient that it is closed axially from both sides and in the circumferential direction from the outside. When the closing ring is installed, a cap nut is located on its inner surface. Therefore, from this side you can look inside the snap connection. The elasticity of the latch facilitates installation. When the latch is bent, the hook can pass beyond the threshold and then snap behind it with a reliable hold in place.

In a preferred embodiment, the deflecting device has a protrusion located on one of the two indicated parts, extending essentially in the circumferential direction and interacting with the recess on the other part, at least one of the two elements (protrusion or recess) has a beveled opposing surface. The beveled opposing surface has a force component acting in a circumferential or tangential direction, as well as a component acting radially. When the force difference is applied radially between the two parts, the opposing surface converts it into a force

pulling, acting mainly in the circumferential direction. Technically, this is a simple embodiment of a deflecting device.

In the most preferred embodiment, the protrusion has a beveled opposing surface, and the recess is the opposite surface, which runs essentially parallel to the surface of the protrusion. Thus, two corresponding beveled surfaces interact with the possibility of sliding movement on each other. This helps to reduce surface pressure and facilitates the transfer of force.

The threshold is preferably located on the radially outer side of the cavity. Firstly, this side is already closed, so the threshold can be placed on it. Secondly, the holding force increases. When compressing a closed closing ring with two fingers, always, unless compression is performed near the connecting device, the closing ring diverges, especially at the junction. Due to this, the latch with the hook also diverges radially outward, which increases the gripping force.

The opposing surface or the opposite surface of the part in which there is a threshold is preferably made with a section oriented radially outward. Due to this, the movement of the part in which there is a latch inward relative to the other part is prevented or at least hindered. An attempt to force such a movement will simultaneously lead to an increase in tensile force and, consequently, to an increase in the connection between the hook and the threshold, which enhances the engagement in the connection.

The protrusion is preferably made in the form of a continuation of the inner as well as the outer circle, and the recess is made respectively radially open inward or outward. it

provides many benefits. Firstly, the manufacture of these parts is simplified. Secondly, the deflecting device is better hidden: it is impossible to immediately recognize that there are some precautionary measures to improve the strength of the connection.

The closure ring is preferably made of two essentially semicircular parts. The semicircular parts have a hole that is large enough so that the ring can be put on the cap nut. With only two parts, installation is simpler.

In a preferred embodiment, all parts are made identical, therefore, their convenience in their manufacture and storage is enhanced. The assembly is also facilitated, since the assembler no longer needs to look for the right part; on the contrary, he can use two identical parts.

The invention is further described by way of example of a preferred embodiment with reference to the drawings, in which: FIG. 1 is a side view of a closing ring; Fig.2 depicts the ring shown in Fig.Z depicts Fig.4 depicts Fig.5 depicts Fig.4.

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- 6 kind of heater thermostat with closing cut; top view of the closing ring; section of the closing ring; section of the closing ring along the line V-V on the thermostat of the heater with

The thermostat of the heater 1 with a cap nut 2 is mounted on the valve fitting (not shown), for example, on the valve. The nut 2 is surrounded by a closing ring 3 having a smooth outer surface, as shown in FIG. The closing ring 3 consists of two identical parts 4, 5, the device of which is described in more detail below, in particular with reference to figures 4 and 5 of the drawings. Since the parts are identical, therefore, the compounds at both ends of parts 4 and 5 are identical. Therefore, only one of these compounds is examined in detail.

The connection between parts 4 and 5 is a snap connection b having an elastic latch 7 with a hook 8 attached to its end and a threshold 9 located in the cavity 10. The cavity 10 is axially closed on both sides and closed in the circumferential direction from the outside side. The threshold 9 is placed on the radial outer side of the cavity 10. When assembling the two parts 4 and 5, the hook 8 is led beyond the threshold 9. This is possible due to the elastic squeezing inside the latch 7. After passing beyond the threshold 9, it moves back, in the radial direction to the outside and tightly set beyond threshold 9.

As a rule, in order to loosen the snap-on device 6, it is decided to press the zones 11, 12 on the two parts 4, 5 to release the hook 8, which is located beyond the threshold 9. In this very approach, it is most likely, since the front sides 13, 14 of the two parts 4, 5 are largely formed and run parallel to the radius of these parts.

However, the movement of part 5 inward towards part 4 in the above snap-in device b is prevented by the protrusion 15 provided with a beveled opposing surface 16. The surface 16 is made at an angle of, for example, 45 ° to the front side. Part 5 has a corresponding recess 17,

which corresponds exactly to the protrusion 15. The recess 17 has an opposite surface 18 that interacts with the surface 16.

When a difference of radial forces is applied between the two parts 4, 5 to release the hook 8 from the threshold 9, this force difference will be transformed into a tensile force, which, in particular, is directed tangentially due to the surfaces 16 and 18. Thus, the protrusion 15 and the recess 17 form a deflecting device . Due to this deflecting device 15, 17, the force with which the hook 8 is held beyond the threshold increases. Therefore, moving the hook radially inward becomes much more difficult. It is unlikely that this can be done manually.

The protrusion 15 is made in the form of a continuous extension of the inner side of the part 4. Accordingly, the recess 17 is also made in the radially inner side of the part 5. It is obvious that the corresponding deflecting device can also be provided on the outer side of the parts 4, 5. In this case, the protrusion and the recess is located on part 5, and the recess on part 4, and their geometric dimensions remain unchanged.

On the side of the closing ring 3, which faces the thermostat, it can additionally be provided for the wall 20 to reach the shoulder 19 and reduce the freedom of movement of the closing ring 3 on the heater thermostat. Thus, the relative movement between the two parts 4, 5 in the radial direction becomes impossible.

Neither the wall 20, nor the protrusion 15 and the recess 17 do not create obstacles to the assembly. During assembly, it is enough to move the two parts 4, 5 tangentially to each other, to the place of contact.

- 8 works as self-locking and can only be opened with tools. In addition, it will be difficult for a non-specialist to place the tool in the proper place, because the snap-in connection is hiddenly placed due to the described construction.

Thus, when using the tools by a layman, traces almost always remain on the closing ring, so that the maintenance staff subsequently finds out that the thermostat setting may have been changed or that the heater thermostat 1 has been manipulated.

The described closing ring may not prevent the thermostat 1 of the heater from being stolen, but may make it difficult.

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Claims (9)

1. The closing ring of the heater thermostat mounting device, consisting of at least two parts that together form a closed ring, the mating parts of which are connected by a snap connection, characterized in that it contains a deflecting device (15, 17) that converts a radially directed difference of forces, applied in a predetermined direction between the mating parts (4, 5), in a tangentially directed tensile force.  2. The ring according to claim 1, characterized in that the snap connection (6) has an elastic latch (7) with a hook (8) placed in the cavity (10), closed at least in the axial direction on both sides and in the circumferential direction from the outside, while the hook (8) captures the threshold (9) located in the cavity (10).  3. The ring according to claim 1 or 2, characterized in that the deflecting device (15, 17) has a protrusion (15) on one of the two parts (4), which is essentially directed along the circumference and interacts with the recess (17) of the other part ( 5), and at least one of these two elements - the protrusion (15) and the recess (17) - has a beveled opposing surface (16, 18).  4. The ring according to claim 3, characterized in that the protrusion (15), the beveled opposing surface (16) and the recess (17) have an opposing surface (18) essentially parallel to the beveled opposing surface (16).  5. The ring according to paragraphs. 2 to 4, characterized in that the threshold (9) is located on the radially outer side of the recess (10).  6. The ring according to claim 5, characterized in that the opposing surface (16) or the opposite surface (18) has on the part (4) provided with a threshold, a section directed radially outward.  7. The ring according to claims 2 to 6, characterized in that the protrusion (15) is made in the form of a continuation of the inner or outer circumference, and the recess (17) is respectively open inward or outward.  8. The ring according to claims 1 to 7, characterized in that it is made of two essentially semicircular parts (4, 5). 9. The ring according to claims 1 to 8, characterized in that all parts (4, 5) are identical.