JP3013364U - Device for adjusting the position of the quarter part with respect to the shell part of sports shoes - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a device by which a user can easily and quickly perform desired adjustment of an angular position of a quarter part with respect to a shell part. A device (1) for adjusting a position of a quarter part (2) with respect to a shell part (3) of a sports shoe (4), the device (1) being coupled to the quarter part (2). First means (5) for preselecting the desired interaction between (2) and the shell part (3),
Second engagement means (32) coupled to the shell part (3)
And a third means (41) for the interaction of the first preselecting means (5) and the second engaging means (32) which can be moved when the quarter part (2) is moved.
With.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for adjusting the position of a quarter part with respect to a shell part of sports shoes.

[0002]

[Prior art]

 It is presently known, for example with regard to ski boots, to produce a shell part in which at least one quarter part is connected around the ankle area, so that the quarter part can move back and forth during sports.

[0003] Problems encountered with the use of ski boots are related to the sport being played and the need to allow the skier to walk when the ski boot's respective securing member is removed. To control the swing of the quarter part.

German Patent No. 1,932,776 discloses a ski shoe with a quarter part and a pointed oval plate projecting towards the shell part at the rear of said quarter part. And a seat is formed axially on said plate and is capable of selectively disposing an appropriately shaped screw shaft rotatably coupled to the plate which is rigidly coupled to the rear of the shell part. It has three separate regions that can be.

[0005] Thus, with this solution, the inclination of the quarter part with respect to the shell part can be preset, however, since the screw is in a specific position, the selected position is fixed and a suitable tool is used. Its position can only be selected by using and when not wearing shoes.

[0006] Certainly, it is difficult to arrange the screw shaft so that the quarter portion can be freely swung, and further, since the shaft can rotate freely, the shaft is crushed unnecessarily, This can cause the plate to deform, resulting in unusable shoes.

In any case, the skier must move the screw directly, the skier must rotate the shaft until it is off-axis and then re-engage it with the desired seat.

US Pat. No. 3,543,421 discloses a ski boot having a shell part to which laterally connected quarter parts having a rod provided at a rear position are disclosed. The rod is pivoted laterally with respect to the quarter so that it can be swung.

The axis of the locator element is rotatably connected at one end of said rod and abuts a plate which is longitudinally connected near the underlying shell.

With this solution, the inclination given to the quarter part can be changed, but the inclination of said quarter part with respect to the shell part cannot be fixed.

French Patent No. 2,020,726 discloses a ski boot with a shell part to which the quarter part is joined, the flexible tab being in the rear position on said quarter part. A surface which can be selectively coupled to one of a plurality of separate seats or formed longitudinally with respect to the plate which is further connected to the shell part in the rear region. Has teeth oriented towards the running shell.

However, this solution also has drawbacks: first of all it is not always easy to correctly place the teeth in the desired seat when wearing ski boots, Similarly, users cannot move tabs easily. In addition, the seat may have snow or ice, which can make it very difficult to pull teeth out of or insert teeth into the seat. In addition, when wearing ski boots, the skier must bend over to grab the tabs, which makes the quarts easier to rotate backwards and puts more pressure on the teeth, which makes it more difficult to pull them out. It is more difficult to move the tabs because.

German Patent No. 28 07 371 provides a suitable support which is rotatably connected to the quarter part and which projects behind the shell part in the region below the lower peripheral edge of the quarter part. Disclosed is a device for adjusting a quarter portion with respect to a shell portion of a ski boot, which is constituted by interacting eccentric elements.

The user usually moves the eccentric element by using the knob while the quarter portion is placed on the shell portion, and when the eccentric element is moved in such a state, friction is generated, so that the eccentric element is rotated. Moving the eccentric element is not easy for the user, since it is very difficult, if not impossible, to change the function and thus this solution also has the drawbacks mentioned above.

In any case, this solution makes it possible to change the rearward rotation of the quarter or the forward inclination of the quarter by changing the position of the eccentric element with respect to the support.

US Pat. No. 4,499,676 discloses a ski boot comprising a device for fixing the quarter part to a shell part, said device being laterally coupled to the quarter part. And a lever which is suitable for engaging at its one end a suitable abutment element projecting at the rear of the shell part.

For example, to be able to walk, depending on the position taken by the skier to move the lever, the lever acts on the abutment element and when the lever is resting on the abutment element the lever is acted upon. In order to move, it may not be easy to move the lever in this way, and this solution also has the drawbacks mentioned above.

Furthermore, the device described above can only obtain two different states. U.S. Pat. No. 4,934,075 discloses a ski boot with a device for controlling the angular position of the quarter part relative to the shell part, said device being essentially in the rear region of the quarter. An eccentric plate that is rotatably coupled to the shell and that can be selectively placed in a suitable seat formed in the shell using an eccentric lever at the end of the shaft that is directed toward the shell. It is composed of a knob that has.

Since the knob has to be moved while the plate is being loaded by the quarter part, it is difficult to move the knob, and this solution also has the drawbacks mentioned above, which However, the tolerances on the seat formed on the shell are limited so that the knob can be moved correctly, however, the seat is subject to a large amount of stress during sports, and therefore the seat may be deformed. Or it may be damaged and interfere with the adjustment operation.

European Patent No. EP 0 521 282 A1 is rotatably coupled to the quarter portion in a rearward position and is shaped such that one end forms a series of inclined surfaces and relative to the quarter portion. A ski boot comprising a device actuated by a knob, having an axis which moves in contrast to a spring suitable for pushing the ratchet in an abutment element which interacts with the ratchet pivoted laterally and which is formed in the shell. Disclosure.

In this solution, the skier moves the knob with the quarter part facing rearward with respect to the shell part, thereby blocking the end of the ratchet at the abutment element actually formed in the shell part. However, the shape of the inclined surface of the knob shaft is not enough to change this situation.

[0022]

SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to solve the above technical problems, eliminate the above-mentioned drawbacks of the prior art, and allow the user to apply the angular part of the quarter part to the shell part when applied to shoes. The object is to provide a device that allows the desired adjustment of the position to be performed easily and quickly.

Within this aim, an important aim is to provide a device that allows the user to obtain the intended angular interrelationship between the quarter part and the shell part without having to maintain a specific position. Is to provide.

[0024] Another important purpose is that the user can simply and easily move the quartet and shell parts regardless of how the shell and quarter parts are currently or previously positioned relative to each other. It is an object of the present invention to provide a device capable of presetting a desired degree of mutual relationship.

Yet another object of the present invention is to provide a device that is structurally simple and applicable to conventional shoes.

Yet another object of the invention is to provide a device which is reliable and safe in use and which requires no special maintenance or skill on the part of the user to move it.

These and other objects, which will become more apparent from the following description, are devices for adjusting the position of the quarter part with respect to the shell part of a sports shoe, the device being associated with said quarter part. A first means for preselecting a desired interrelationship between the quarter portion and the shell portion, a second engaging means coupled to the shell portion, and for the first preselection Means and third means for interaction with the second engaging means movable when the quarter portion is moved.

Further features and advantages of the present invention will become apparent from the detailed description of the preferred embodiments given below with reference to the accompanying drawings, which are exemplary and limit the present invention. Not a thing.

[0029]

Detailed Description of the Preferred Embodiments

 With reference to the accompanying drawings, reference numeral 1 indicates a device for adjusting the position of the quarter part 2 with respect to the shell part 3 of a sports shoe 4, for example skis, skates, or trekking shoes. ing.

This device can be placed on a suitable first seat 7 formed on the first body 5 by means of suitable fixing elements such as, for example, the first rivets 6 on the rear part of the quarter part 2 of the sports shoe 4. It comprises first means constituted by said first body 5 which can be connected.

The body 5 is constituted by a support 8 in which a second seat 9 is formed, and the second seat 9 has a circular planar shape, and includes a hole 10 extending in a first axial direction, It has a first flat base 11 which covers approximately half the extent of the support 8 and surrounds the first hole 10 in a ring.

The first flat base 11 has a second flat surface 11 which is parallel to the surface of the first flat base 11 and which is located below the surface of the first flat base 11. It is connected to the flat base 12.

The cylindrical sleeve 13 can be arranged coaxially with the first hole 10 in the second seat 9 and acts on a part of the first flat base 11. The toothed ring 14 is radially connected to the sleeve and can be rotatably arranged on the second flat base 12 of the second seat 9.

The toothed ring 14 has an angle less than 180 ° in its planar shape so that the toothed ring 14 can swing with respect to the axis of the first hole 10 at the seat formed by the second flat base 12. It is a fan shape.

The toothed ring 14 is further curved at the curved peripheral edge 15 of the flat upper surface 16 above said toothed ring 14 and projects in a direction opposite to the side of the toothed ring 14. Tabs 17 of.

The first body 5 can further be rotatably connected to the sleeve 13 by means of the first pivot 20 and to the first base 11 via the first hole 10. It is constituted by a knob 18 which is essentially circular in plan shape with a second axially extending hole 19 which can be coupled in expression.

As will be described below, a lever 21 projecting radially from the knob 18 is allowed to move at an angle of less than 180 ° and is underneath the projecting radially with respect to the first base 11. It can slide on the second tab 22.

The interior of the knob 18 is hollow so as to form a third annular seat 23 for a flexible element such as a first cylindrical helical compression spring 24.

Therefore, as shown in FIGS. 12 and 2, the first spring 24 is attached to the second seat 9 and the third seat 23 when the overnight knob 18 is coupled to the support 8. Be accommodated.

The third annular seat 23 extends at an angle of less than 360 ° and is interrupted therein by a radially extending wall 17a in which the first tab 17 can be slidably arranged. When the knob is rotated in this way, the first spring 24 is compressed in the same direction as the rotation of the knob without rotating the toothed ring 14.

Once the knob 18 is connected to the support 8, the first tab 17 projecting above the toothed ring 14 enters the third seat 23. As shown in FIG. 3, the height of the first tab 17 is such that at the end of the first tab 17 constitutes an abutment and positioning element for the end of the spring 24. .

Further, the third tab 25 protrudes from the knob 18 in a radial direction substantially on the side opposite to the lever 21, and a plurality of fourth tabs having a semicircular or trapezoidal cross section are formed under the third tab. A seat 26 is formed.

A fifth cylindrical seat 27 is formed in the support 8 in the region adjacent the second seat 9 to accommodate a means for temporarily locking the rotation of the knob 18 with respect to the support 8. To be done. Said means are constituted by a second spring 28 and a ball 29 which is compressed towards said knob 18 by said second spring 28, when said ball enters one of the fourth seats 26, A stable arrangement is obtained, and when the knob 18 is further rotated by using the lever 21, this arrangement is broken.

The first body 5 is constituted not only by the support 8 but also by a dome 30 which is connected to the support 8 at an end portion adjacent to the flat base 12, and the inside of the dome has a planar shape. Is provided with a sixth seat 31 having a shape in which the tips of two Vs are combined with each other, and the sixth seat is connected to the second flat base 12 of the second seat 9 of the support 8. .

The device 1 is further constituted by a second temporary or stable engagement means coupled to the shell part 3, said second means being constituted by a curved plate 32, which curved plate 32. At its end, a third hole 33 is formed for connecting to the rear of the shell part 3 in the region underlying the first body 5 by means of a suitable second rivet 34.

Furthermore, the fourth tab 36 projects from the plate 32 at a right angle to the peripheral edge portion 35 that does not face the first body 5, and the fourth tab is the front surface of the first body 5. Has a first part 37 at a right angle to the longitudinally extending surface in the center of the first part 37, which has a second part 38 inclined towards the dome 30 and a first part 37. A third portion 39, which is square and directed towards the dome 30, follows in the opposite direction to the lever 21 projecting from the knob 18.

The first teeth 40 are joined in the plate 32 and project from the plate in the direction opposite to the shell part 3, and the plan shape of the first teeth 40 is preferably a square with chamfered corners. And the first tooth 40 extends longitudinally in the center of the front of the first body 5 at a preset distance from the first portion 37 of the fourth tab 36. It projects on the axis.

The device further comprises a third means for interacting a first preselecting means associated with the quarter portion and a second engaging means associated with the shell portion. The third means is constituted by a lever 41 rotatably coupled to the dome 30 and having a fourth central hole 42, the fourth central hole 42 being formed in the dome 30. And a sixth hole 45 formed in the base 46 which is suitable for rotatably supporting the lever 41 and which can be connected to the upper dome 30 by means of the first rivet 6. Serves as a seat for a suitable second pivot 43 passing through.

Therefore, the lever 41 is rotatably fitted in a sixth seat 31 formed below the dome 30, one end of the lever 41 being provided with a second flat base of the second seat 9 of the support 8. 12 has a complementary set of teeth 47 which can be located in the region overlying and mesh with the facing toothed ring 14.

The lever 41 has, on the side opposite to the tooth 47, a seventh hole 48 for engaging a second tooth 49 projecting towards the underlying plate 32. The shape of the second tooth 49 is substantially the same as the shape of the first tooth 40, and the second tooth is the first tooth so that the second tooth can swing. It can be located in the space between 40 and the underlying fourth tab 36 projecting from the plate 32.

Furthermore, rotation of the knob 18 is limited by the first projection 50 and the second projection 51 extending from the peripheral edge of the support 8 and the third tab 25 protruding radially with respect to the knob 18. The ends of the interact with the protrusions.

The usage of this device is as follows. Assuming that it starts in the state shown in FIG. 3, the lever 21 is in the middle region of the second tab 22 and the first spring 24 causes the toothed ring 14 to extend longitudinally at the center of the front face of the first body 5. The quarter part (2) cannot move with respect to the shell part (3) when it is kept in mirror symmetry with respect to the axis extending to. The complementary set of teeth 47 of the lever 41 is coupled to the toothed ring 14 and the lever 41 causes the second tooth 49 to project from the first tooth 40 and the plate 32 to the first tab 36 of the fourth tab 36. It is arranged along the axis extending in the longitudinal direction at the center of the front surface of the first body 5 so as to be arranged between the portion 37 and the portion 37.

In this way, any attempt to tilt the quarter portion in one direction or the other depends on the interaction between the first and second teeth.

If the user wishes to change this state, the user can preselect this change by directly operating only the lever 21, as shown in FIG.

Suppose the user wants in this manner to be in a position where the quarter part is free to move with respect to the shell part, that is to say in an optimal state for walking.

When the lever 21 is rotated towards the dome 30, the other end of the first spring 24 abuts the first tab 17 projecting from the toothed ring 14 and thus the wall extending in the radial direction. The first spring 24 is loaded by 17a, but the toothed ring 14 remains immobile, like the lever 41.

Rotation of the knob 18 is limited due to the interaction of the third tab 25 and the first protrusion 50.

The knob is locked in the selected position because the ball 29 is pushed by the spring 28 and engages one of the fourth seats 26.

In this way, the user can preselect a desired state in which he can walk easily.

Once the user stands up, there is almost no friction between the first tooth, the second tooth and the first part 37 of the fourth tab 36, so that a slight movement by the user is caused by the quarter part. This state is automatically obtained when it is transmitted to. Therefore, the first spring 24 has sufficient force to move the angle of the toothed ring 14 and thus of the lever 41 as shown in FIG.

In this manner, when the lever 41 rotates with respect to the second pivot 43, the second and third means, and thus the lever 41 and the plate 32, are shown as shown in FIGS. 6 and 7. The second tooth 49 is arranged laterally with respect to the first tooth 40 so that the quarter can freely rock with respect to the shell without any interaction.

If, for example, the user wishes to select different states so that the quarter part can be bent forwards or support the rear part when bent backwards, the user can select the quarter parts as shown in FIG. Beyond the intermediate state where the shell and the shell portion are fixed to each other, the second protrusion 51 is brought into contact with one end of the third tab 25 protruding radially from the knob 18 as shown in FIG. It is only necessary to rotate 18 further in the opposite direction with respect to dome 30.

In this manner, as in the case described above, without any manipulation to change the position of the toothed ring 14 and the lever 41 in any way, therefore essentially by the wall 17a in the radial direction, the first The desired state is preselected without having to overcome any friction or force caused by the interaction between the mechanical elements, other than the force with which the springs 24 of FIG.

Due to the presence of the second spring 28 and the ball 29, the knob 18 is temporarily and stably arranged with respect to the support 8, said ball being formed under the third tab 25, the fourth seat 26. Selectively placed in the desired one of the

Returning to the state shown in FIG. 8, the first spring 24 wants to rotate the toothed ring 14 so that the second tooth 49 is adjacent the third portion 39 of the fourth tab 36. To locate the second tooth 49 in the space between the first tooth 40 and the first portion 37 of the fourth tab 36 of the plate 32 such that the lever 41 rotates until it is placed, the quarter portion. It is sufficient to rotate the to the rear so that the user can automatically move the quarter part with respect to the shell part to obtain the desired function.

In this manner, as shown in FIGS. 9 and 10, the second tooth 49 is not obstructed in the forward direction, so that the quarter portion can be tilted forward, while the quarter portion is moved backward. When rotated, the stroke is limited when the second tooth 49 interacts with the second portion 38 of the fourth tab 36 of the plate 32 which is rigidly coupled to the shell.

Thus, the present invention achieves the intended goals and objectives and allows the user to fix the three possible functions for the interaction of the quarter part and the shell part, namely the quarter part and the shell part. The function and the function that allow the quarter part and the shell part to freely swing back and forth with respect to each other, and the feature that the quarter part can be tilted in the forward direction, It is clear that a device is provided which allows one of the functions of limiting rotation to be preselected very quickly and easily.

The user need only overcome the forces created to preload the first spring 24, allowing the ball 29 to be placed in a different desired seat of the four seats 26. The operation of the device is very simple.

The preselected desired function is achieved automatically when the skier or user stands up again and the force of the first spring 24 is slightly reduced in the quarter so that the remaining friction can be overcome. It is caused by tilting the lever 41 and placing the lever 41 in a proper position.

With this device, it is sufficient to hear the spring 29 click in the fourth seat 26 in order to know that the knob has been properly positioned, and the user will do it. It is even easier to operate this device because you do not need to see the operation directly.

Of course, many variations and modifications can be made to this device, and all of these variations and modifications are within the concept of this invention.

The materials and dimensions of which the individual components of this device are made may, of course, be the most suitable for the particular requirements.

[Brief description of drawings]

FIG. 1 is an exploded view of the components of the device.

FIG. 2 is a cross-sectional view taken along a plane that is longitudinally cut in the center of the front surface of the device.

3 is a cross-sectional view taken along the plane III-III of FIG. 2, showing the quarter portion being prevented from rotating with respect to the shell portion.

FIG. 4 is a cross-sectional view similar to FIG. 3, showing a state in which the user has moved the device to make it easier to walk.

FIG. 5 is a cross-sectional view similar to FIG. 4 when the quarter portion is inclined to make it easier to walk.

FIG. 6 is a sectional view similar to FIG. 5, showing a state when walking.

FIG. 7 is a sectional view similar to FIG. 5, showing a state when walking.

FIG. 8 is a cross-sectional view similar to FIG. 3 when the user sets the quarter portion with respect to the shell portion in a controlled state.

[Fig. 9] When the quarter part is tilted to this state,
It is sectional drawing similar to FIG.

FIG. 10 is a sectional view similar to FIG. 9, showing a state in which the quarter portion is bent forward with respect to the shell portion.

FIG. 11 is a rear perspective view of a partial cross section when the device is applied to shoes.

12 is a sectional view taken along the plane XII-XII in FIG.

FIG. 13 is a cross-sectional view of the components of the device.

[Explanation of symbols]

 2 quarter part 3 shell part 5 first body 6 first rivet 18 knob 32 curved plate 34 rivet

[Procedure amendment]

[Submission date] December 27, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Luka Galena Italy, 31031 Caerano Esse Marco, (Province of Treviso), Via Don Strozo, 48 (72) Alessandro Barlo Italy , 31015 Conellano Veneto, (Province of Treviso), Via Salemi, 4

Claims (25)

[Scope of utility model registration request] 1. A device for adjusting the position of a quarter part relative to a shell part of sports shoes, the device being coupled to the quarter part for preselecting a desired interaction between the quarter part and the shell part. First of
Means, a second engaging means coupled to the shell portion, a first preselecting means and the second engaging means movable when the quarter portion is moved. A third means for acting. 2. The first preselecting means and the second
Said third means for interaction with said engagement means can be moved without contact between said third means and said second engagement means. The described device. 3. The apparatus of claim 1, wherein the first means is coupled to the shell portion and the second means is coupled to the quarter portion. 4. The first means is constituted by a first body, the first body being capable of being arranged on a suitable first seat formed on the first body. 1
Can be connected to the rear of the quarter part of the sports shoe by means of suitable fastening elements such as rivets, the first body being constituted by a support forming a second seat with a circular plan shape 4. The device according to claim 1, wherein said seat comprises a first axially extending hole. 5. The second seat has a first flat base that occupies approximately half of the extent of the support and surrounds the first hole in a ring shape, wherein the first flat base is ,
Device according to claim 1 or 4, characterized in that it is connected to a second flat base which is arranged in a plane parallel to and below the plane of the first flat base. . 6. A cylindrical sleeve may be arranged coaxially with said first hole in said second seat and arranged to act on a portion of said first flat base, and may be toothed. A ring is radially coupled to the sleeve, the ring being rotatably arranged on the second flat base of the second seat. The device according to. 7. The planar shape of the toothed ring is such that the toothed ring can swing about the axis of the first hole in the seat formed by the second flat base. Device according to claim 1 or 6, characterized in that it is fan-shaped with an angle of less than 180 °. 8. The toothed ring has a curved first tab protruding in a direction opposite to a side of the toothed ring on a curved peripheral portion of a flat surface above the toothed ring. Device according to claim 1 or claim 7, characterized in that 9. The first body is also constituted by a knob that is essentially circular in plan shape, and with a first pivot, through the sleeve and through the first hole. 9. A device according to claim 1 or claim 8 characterized in that it has a second axially extending hole allowing it to be rotatably coupled to the first base. 10. A lever projecting radially from the knob is movable at an angle of less than 180 ° and is slidable on an underlying second tab projecting radially with respect to the support. Device according to claim 1 or claim 9, characterized in that it is capable. 11. The interior of the knob is hollow so as to form a third annular seat for a flexible element such as a first cylindrical helical compression spring. The device according to claim 1 or 10, wherein 12. The method of claim 1 or 11, wherein the first spring is housed in the second and third seats once the knob is coupled to the support.
The device according to. 13. The third annular seat extends at an angle of less than 360 ° and is interrupted by a radially extending wall, wherein the knob extends inside the radially extending wall. The first tab can be slidably arranged so that when the first spring is compressed, the first spring is compressed in the same direction as the rotation of the knob without rotating the first toothed ring. The device according to claim 1 or claim 12, wherein 14. Once the knob is coupled to the support, the first tab projecting above the toothed ring is located at the third seat and the first tab is located at the third tab. 1
Device according to claim 1 or 13, characterized in that the ends of the tabs are of such height that they constitute abutment and positioning elements for the ends of the first spring. 15. A third tab projects radially from the knob on a side substantially opposite the lever, the third tab
15. A device according to claim 1 or 14, characterized in that a plurality of fourth seats are formed under the tabs of the seats, the seats having a semicircular or trapezoidal cross-section. 16. A fifth cylindrical seat is formed in a region of the support adjacent to the second seat,
16. A device according to claim 1 or claim 15, characterized in that the seat of the housing accommodates means for temporarily locking the rotation of the knob relative to the support. 17. The means comprises a second spring and a ball compressed towards the knob by the second spring, the ball temporarily resting on one of the fourth seats. 17. Device according to claim 1 or claim 16, characterized in that it enters. 18. The first body is defined by a dome coupled to the support at an end adjacent to the second flat base, the interior of the dome having two V-shaped tips in plan view. 6. A sixth seat having a combined shape of a tip and a tip is provided, and the sixth seat is connected to the second flat base of the second seat of the support. The device according to any one of claims 1 to 17. 19. The second temporary or stable engagement means coupled to the shell portion is constituted by a curved plate, the end of the curved plate being provided with a suitable second
19. A third hole for connecting to a rear portion of the shell portion is formed in a region below the first body by using the rivet of claim 1. The device according to. 20. The fourth tab projects from the plate at a right angle to the peripheral edge that does not face the first body, and the fourth tab is the center of the front surface of the first body. At a right angle to a plane extending in the longitudinal direction at the first portion and a second portion inclined toward the dome and the first portion.
20. The first part of claim 1 or claim 19 characterized in that a third part, which is at a right angle and is directed towards the dome, follows in a direction opposite to the lever projecting from the knob.
The device according to. 21. The first tooth is connected to the plate and projects from the plate in a direction opposite to the shell portion, and the plan shape of the first tooth is preferably a square with chamfered corners, The first tooth may project a predetermined distance from the first portion of the fourth tab on a longitudinally extending axis in the center of the front of the first body. Claim 1 or Claim 20 characterized by
The device according to. 22. The third means comprises a lever rotatably coupled to the dome, the lever rotatably supporting the lever and a fifth hole formed in the dome. Suitable and serving as a seat for a suitable second pivot through a sixth hole formed in the base which is connectable to the dome above by means of the first rivet; Device according to any of the preceding claims, characterized in that it has four central holes. 23. The lever is rotatably fitted to the sixth seat formed under the dome, and one end of the lever is the second flat base of the second seat of the support. 1 to 2, characterized in that it can be arranged in the upper region of the lever and that the lever has a complementary set of teeth which engage the facing toothed ring.
2. The device according to any one of 2. 24. On the opposite side thereof, the lever has a seventh hole for engaging a second tooth projecting towards the underlying plate, the second tooth being the first tooth. Has substantially the same shape as the tooth of the first tooth and can be arranged to be movable in the space between the first tooth and the underlying fourth tab projecting from the plate. The device according to claim 1 or claim 23. 25. Rotation of the knob is limited by a first protrusion and a second protrusion extending from a peripheral portion of the support, the end of the third tab protruding radially from the knob. 25. A device according to claim 1 or claim 24, characterized in that interacts with the first and second protrusions.