EP2620576A2

EP2620576A2 - An oven hinge with friction system

Info

Publication number: EP2620576A2
Application number: EP20130150007
Authority: EP
Inventors: Mehmet Faik Ciftci
Original assignee: Atasan Metal Sanayi ve Ticaret AS
Current assignee: Atasan Metal Sanayi ve Ticaret AS
Priority date: 2012-01-24
Filing date: 2013-01-02
Publication date: 2013-07-31
Anticipated expiration: 2033-01-02
Also published as: EP2620576B1; EP2620576A3

Abstract

This invention is related to a hinge mechanism (1) that accommodates a friction system inside it which is used in oven (F) doors (K). This friction system helps the door (K) to stay in a balanced position during the opening and the closing of the door (K) by means of the friction force.

Description

Technical Field

This invention, is related to a hinge that comprises a friction system within its inner components used in oven lids.

Prior Art

There are many various hinge applications that have opening and closing functions belonging to lids for ovens, dishwashers and similar devices used for miscellaneous purposes.
In embodiments known in the state of the art, a hinge body has been position to rotate around the circumference of the shaft on the part mounted onto the U profiled piece fixed onto the body of the device. The body accommodates the inner components. The body is fixed to the lid of the device, thus enabling an opening and closing motion. The lid carries out a rotating motion around the shaft. The momentum arising due to the weight of the lid is balanced with an elastic part. One end of the elastic part is attached to the part located on the body and the other end is attached to an intermediate member. The elastic part is always tensed in all positions of the lid. The transfer member, transfers the force it receives from the elastic part to the intermediate part. The system also comprises at least one elastic part that enable the lid to close securely on the body of the device thus also preventing losses such as heat loss. These elastic parts are assembled between the protrusions on the body and another piece that holds these elastic parts. The force produced by the elastic parts is transferred to the part holding the elastic part, then to the roller shaft and from here to the roller. The roller shaft moves inside the slit located in the body. When the intermediate part comes to the closed position, the forces produced from the elastic parts by means of the cam section on top, the lid is forced to be rotated towards the closing direction. This way, the lid is securely closed on to the body of the device and losses such as heat loss are prevented. The locking mechanism turns around the shaft on the intermediate part and fits securely on the carrier metal plate piece with U profile and thus the intermediate part is enables to be fixedly positioned. The motion of the second spring holding part is limited via a pin mobile inside the slit located within the body.
In the European Patent document in the state of the art, numbered EP1183988A2 a hinge system with counter weight that enables the vertical and forward movement of a door designed for dishwashers, and an arm (joint) that rotates over the connection means and articulated elements on said arm is disclosed.

Brief description of the invention

The purpose of the present invention is to provide an oven hinge which has a friction system, which helps the lid/door to stay in a balanced position when the door of the oven is being opened and closed by means of a friction force.

Detailed description of the invention

An oven hinge with a friction system provided in order to reach the purpose of this invention has been shown in the attached figures, wherein said figures illustrate the following:

Figure 1 is a perspective view of the oven.
Figure 2 is a front view of the hinge mechanism when the door of the oven is in the closed position.
Figure 3 is a view of the hinge mechanism where the inner parts of the hinge can be seen when the oven door is at the closed position.
Figure 4 is the transparent view of the hinge mechanism when the oven door is at its closed position.
Figure 5 is the plan view of the hinge mechanism when the oven door is at its closed position.
Figure 6 is the plan view of the intermediate elastic part and the horizontal friction means.
Figure 7 is a rear view of the hinge mechanism where the oven door is at its closed position.
Figure 8 is the perspective view of the hinge mechanism when the oven door is at its closed position.
Figure 9 is a perspective view of the hinge mechanism without the hinge body.
Figure 10 is the perspective view of the hinge mechanism form a different angle when the oven door is at its closed position.
Figure 11 is the perspective view of the hinge mechanism without the hinge body when the over door is at its closed position.
Figure 12 is the perspective views of the vertical and horizontal friction means.
Figure 13 is the blown up perspective view of the hinge mechanism when the oven door is at its closed position.
Figure 14 is the front view of the hinge mechanism when the oven door is ajar.
Figure 15 is the view of the hinge mechanism where the inner parts can be seen when the oven door is ajar.
Figure 16 is the transparent view of the hinge mechanism when the oven door is aj ar.
Figure 17 is the plan view of the hinge mechanism when the oven door is ajar
Figure 18 is the rear view of the hinge mechanism when the oven door is ajar.
Figure 19 is the perspective view of the hinge mechanism when the oven door is aj ar.
Figure 20 is the perspective view from a different angle, of the hinge mechanism when the oven door is ajar.
Figure 21 is a front view of the hinge mechanism when the oven door is at an open position.
Figure 22 is the view of the hinge mechanism when the inner parts of the hinge mechanism can be seen when the oven door is at an open position.
Figure 23 is the perspective view of the hinge mechanism without its body when the oven door is at an open position.
Figure 24 is the blown up perspective view of the hinge body without its body when the oven door is at an open position.
Figure 25 is the perspective view from a different angle, of the hinge mechanism without a body when the oven door is at an open position.

The parts in the figures have each been numbered and the references of said numbers have been given below.

1. Hinge mechanism
2. Hinge body
3. Bush shaft
4. Bush
5. Intermediate part
6. Suspending part
7. First elastic part
8. Primary vertical friction element
- 81. Protrusion
9. First slit
10. Primary elastic part holder
11. Primary elastic part holder shaft
12. Locking mechanism
13. Locking mechanism shaft
14. Horizontal friction means
15. Intermediate elastic part
16. Secondary vertical friction element
17. Secondary vertical friction element shaft
18. Secondary elastic part
19. Secondary elastic part holder
20. Roller
21. Roller shaft
22. Secondary slit
F. Oven
G. Oven Body
K. Oven door
T. Supporting part

The hinge mechanism (1) subject to the invention, mounted on the oven door (K), enabling for the door (K) to stop at the position it was left at, during the opening and closing motion of the door, around an axis which extends along one side of the oven door (K) with the friction it possesses, basically comprises:

At least a hinge body (2) mounted on the oven door (K),
At least a bush shaft (3) located at the tip closest to the supporting part (T) of the hinge body (2),
At least a bush (4) fitted on the bush shaft (3),
At least one intermediate part (5), connected via the bush shaft (3) and the bush (4) with one end to the supporting part (T) and the other end to the hinge body (2),
At least a suspending part (6) that is located at the end where the hinge body (2) does not have a bush shaft (3),
At least an primary elastic part (7) attached at one end to the suspending part (6) which balances the forces created by the weight of the oven door (K)
At least a primary vertical friction element (8) attached at the end, where the said end is not attached from primary elastic part (7) to the suspending part (6),
At least a protrusion (81) located on the primary vertical friction element (8),
At least a first slit (9) in which the protrusion (81) moves, located on the side surfaces of the hinge body (2), said slits facing each other,
At least a primary elastic part holder (10) attached to the protrusion with its tip which is close to the suspending part (6),
At least an elastic part holder shaft (11) enabling the attachment of the primary elastic part holder (10) to the intermediate part (5),
At least a locking mechanism (12) that prevents the moving or the dislocating of the intermediate part (5) when the oven door (K) is being opened or closed.
At least a locking mechanism shaft (13) located on the intermediate part (5) enabling the locking mechanism (12) by rotating on the inter mediate part (5) to securely fit the supporting part (T),
At least a horizontal friction element (14) that ensures the creation of friction force by moving together with the holder (10) during the movement of the primary elastic part holder (10) by means of applying pressure on the hinge body (2) positioned inside the primary elastic part holder (10)
At least an intermediate elastic part (15) located between the horizontal friction elements (14) thus applying force on said two friction elements (14) and ensuring the friction application of these elements (14) to the hinge body (2),
At least a secondary vertical friction element (16) enabling the obligatory rotation around an axis and being in contact with the body (2) thus establishing friction,
At least a second friction element shaft (17) enabling the attachment of the second vertical friction element (16) to the hinge body (2),
At least a secondary elastic part (18) that ensures that the oven door (K) securely closes on to the oven body (G), by this means prevents heat losses, and at the same time forces the secondary vertical friction element (16) to rotate around the shaft (17), forming a friction force between the secondary vertical friction element (16) and the primary elastic part holder (10),
At least a secondary elastic part holder (19) that passes through the secondary elastic part (18) and that supports these parts (18) and at the same time tightens them,
At least a roller (20) connected to the secondary elastic part (18) from its end where there is no secondary friction element (16) of the secondary elastic part (18) present,
A roller shaft (21) which transmits the force it receives from the secondary elastic part (18) to the roller (20), and
At least a secondary slit (12) in which the roller shaft (21) moves in.

The invention comprises at least a hinge mechanism (1) that enables the door (K) to stop at the position it is left in by using the effect of the friction force in situations where the momentum established with the force effect that has been transferred from the primary elastic part (7) to the intermediate part (5) cannot balance the oven door (K), wherein the oven door tends to open (K) or close on its own.
In addition to the primary elastic part (7) used to receive the power arising from the weight of the door (K) according to the invention, horizontal friction elements (14) and vertical friction elements (8, 16) are used. The forces received from the elastic parts (7, 15, 18) are transferred to said elements (8, 16). Friction force is established by the movements created by the hinge mechanism (1) during it operation and the force created by the elastic elements (7, 18). In this invention, different to the prior mechanisms, any deviations of the oven door (K) that might occur during its balanced state is compensated and it is enabled for the door (K) to stay in the position it is left at. By means of keeping the friction surfaces, in the case of abrasion, to be in contact with each other it is guaranteed for the friction elements (8,14,16) to be continuously at a pressured state with the effect of the power received from the elastic parts (7,15,18) of the friction elements (8,14,16).
During the opening and closing of the hinge (1) the primary elastic part holder (10) moves in the horizontal direction relative to the hinge body (2). The friction forces that help the door (K) to stay in a balanced state by means o of said movements are provided according to the conditions set forth below.
The primary elastic part (7) is attached to the primary vertical friction element (8), from the bottom part of the hinge body (2) forcing the primary vertical friction element (8) to rotate toward the direction of the bush (4) located on the hinge body (2). The primary vertical friction element (8) is delimited at the same time with the hinge body (2) from its top surface. The Primary vertical friction element (8), tries to turn with the force it obtains from the primary elastic part (7) and applies force from the bottom of the top surface to the hinge body (2). A friction force is created between the primary vertical friction element (8) and the hinge body (2) during the operation of the hinge (due to the movements produced from the operation of the hinge (1) and the pressure force). It is ensured that the oven door stays in a balanced state via the friction force.
The intermediate elastic part (15) is assembled between the horizontal friction elements (14), having both ends tightened with the horizontal friction elements (14) and the elastic part applying force in the pushing direction to said parts (14).
The horizontal friction elements (14) is located on the primary elastic part holder (10), wherein it moves together with the primary elastic part holder (10) relative to the hinge body (2) during the operation of the hinge (1).
The horizontal friction element (14) that transfers the force it receives from the intermediate elastic part (15) to the hinge body (2) and by this means establishes a pressure force between the hinge body (2) and the friction elements (14). The primary elastic part holder (10) and the horizontal friction element (14) work in unison. A friction force is established with the force effect produced from the intermediate elastic part (15) in the hinge body that stays passive relative to the horizontal friction element (14). This friction force, compensates the deviations that might arise in the balance of the door (K) thus enabling the door (K) to stay in balance.
While one end of the secondary elastic part (18) is delimited with the secondary elastic part holder (19) the other end is delimited with the secondary vertical friction element (16). The second elastic parts (18) are assembled between the secondary elastic part holder (19) and the secondary vertical friction elements (16) and they apply force in order to push these said parts (19, 16). The secondary vertical friction element (16) is integrated with the hinge body (2) by means of the secondary vertical friction element shaft (17) and the secondary vertical friction element (16) is able to rotate around the secondary vertical friction element shaft (17). The secondary vertical friction element (16) is forced to rotate around the secondary vertical friction element shaft (17) by means of the force produced by the secondary elastic parts (18). The secondary vertical friction element (16) is delimited at the same time with the primary elastic part holder (10). The secondary vertical friction element (16) tries to rotate with the force it receives from the second elastic parts (18) and transfers this power to the primary elastic part holder (10) it is delimited to. The primary elastic part holder (10) moves relative to the hinge body (2) during the operation of the hinge mechanism (1). During this movement, the secondary vertical friction element (16) located inside the hinge body (2) is passive, when compared to the primary elastic part holder (10). The relative movement of the primary elastic part holder (10) according to the secondary vertical friction element (16) and the pressure force between the secondary vertical friction element (16) and the primary elastic part holder (10) taken from the secondary elastic parts (18) brings out the friction force. This friction force compensates the deviations that might arise in the balance of the door (K) thus enabling the door (K) to stay balanced.
Within the scope of these basic concepts, it is possible to have many embodiments of the oven hinge (1) with a friction system, subject to the invention, wherein the invention cannot be limited to the examples described herein, but it is as mentioned in the following claims.

Claims

An oven hinge (1) with a friction system, subject to the invention, mounted on the oven door (K), enabling for the door (K) to stop at the position it was left at, during the opening and closing motion of the door, characterized in that it basically comprises:
- At least a hinge body (2) mounted on the oven door (K),

- At least a bush shaft (3) located at the tip closest to the supporting part (T) of the hinge body (2),

- At least a bush (4) fitted on the bush shaft (3),

- At least one intermediate part (5), connected via the bush shaft (3) and the bush (4) with one end to the supporting part (T) and the other end to the hinge body (2),

- At least a suspending part (6) that is located at the end where the hinge body (2) does not have a bush shaft (3),

- At least an primary elastic part (7) attached at one end to the suspending part (6) which balances the forces created by the weight of the oven door (K)

- At least a primary vertical friction element (8) attached at the end, where the said end is not attached from primary elastic part (7) to the suspending part (6),

- At least a protrusion (81) located on the primary vertical friction element (8),

- At least a first slit (9) in which the protrusion (81) moves, located on the side surfaces of the hinge body (2), said slits facing each other,

- At least a primary elastic part holder (10) attached to the protrusion with its tip which is close to the suspending part (6),

- At least an elastic part holder shaft (11) enabling the attachment of the primary elastic part holder (10) to the intermediate part (5),

- At least a locking mechanism (12) that prevents the moving or the dislocating of the intermediate part (5) when the oven door (K) is being opened or closed.

- At least a locking mechanism shaft (13) located on the intermediate part (5) enabling the locking mechanism (12) by rotating on the inter mediate part (5) to securely fit the supporting part (T),

- At least a horizontal friction element (14) that ensures the creation of friction force by moving together with the holder (10) during the movement of the primary elastic part holder (10) by means of applying pressure on the hinge body (2) positioned inside the primary elastic part holder (10)

- At least an intermediate elastic part (15) located between the horizontal friction elements (14) thus applying force on said two friction elements (14) and ensuring the friction application of these elements (14) to the hinge body (2),

- At least a primary vertical friction element (16) enabling the obligatory rotation around an axis and being in contact with the body (2) thus establishing friction,

- At least a second friction element shaft (17) enabling the attachment of the second vertical friction element (16) to the hinge body (2),

- At least a secondary elastic part (18) that ensures that the oven door (K) securely closes on to the oven body (G), by this means prevents heat losses, and at the same time forces the secondary vertical friction element (16) to rotate around the shaft (17), forming a friction force between the secondary vertical friction element (16) and the primary elastic part holder (10),

- At least a secondary elastic part holder (19) that passes through the secondary elastic part (18) and that supports these parts (18) and at the same time tightens them,

- At least a roller (20) connected to the secondary elastic part (18) from its end where there is no secondary friction element (16) of the secondary elastic part (18) present,

- A roller shaft (21) which transmits the force it receives from the secondary elastic part (18) to the roller (20), and

- At least a secondary slit (12) in which the roller shaft (21) moves in.
An oven hinge (1) with a friction system according to claim 1, characterized in that; it comprises at least a hinge body (2) which enables the balancing of the door (K) via friction force when the momentum established from the force transferred from the primary elastic part (7) to the intermediate part (5) is not able to balance the weight of the door (K) and the door (K) tends to close or open on its own.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises horizontal (14) and vertical friction elements (8,16) used in addition to the primary elastic part (7) in order to receive the momentum arising from the weight of the door (K).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises a horizontal friction element (14) which balances the momentum arising from the weight of the door (K) during the movement of the door (K) from an open position until it comes to a closed position, with the effect of the force produced from the intermediate elastic part (15) together with the force produced from the primary elastic part (7).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises elastic parts (7,15,18) which ensure that the friction surfaces continue to be in contact with each other following the abrasions that could be formed during the operating period for each of the friction elements (8,14,16).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a horizontal friction element (14) that transfers the force it obtains from the intermediate elastic part (15) to the hinge body (2).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a primary elastic part holder (10) which helps to keep the door (K) at a balanced position, that forms the friction force, and that moves at a horizontal direction relative to the hinge body (2) during the closing and the opening motion of the hinge (1).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least an intermediate elastic part (15) that is assembled to be positioned between the horizontal friction elements (14), which has both ends tightened with said friction elements (14) and which applies a force in the pushing direction to said parts (14).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises friction elements (8, 14, 16) that keep continuous pressure with the force effect obtained from the elastic parts (7,15,18) and that guarantees that the friction surfaces are still in contact with each other even when they are subject to abrasion.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a primary elastic part (7), that is attached to the primary vertical element (8) from the bottom part of the hinge body (8) and that forces the primary vertical friction element (8) to move towards the direction of the bush (4) located on the hinge body (2).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a primary vertical friction element (8) that tries to rotate via the power it receives from the primary elastic part (7) and that applies a force to the hinge body (2) from the base of the top surface.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a primary vertical friction element (8) that ensures that the door (K) stays in a balanced position between the hinge body (2) and said element (8) during operation (due to the movements arising from the functioning of the hinge (1) and the pressure force) and that forms a friction force.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises horizontal friction elements (14) located on the primary elastic part holder (10) and that moves together with the primary elastic part holder (10) relative to the hinge body (2) during the operation of the hinge (1).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a horizontal friction element (14) that transfers the force it receives from the intermediate elastic part (15) to the hinge body (2) and by this means establishes a pressure force between the hinge body (2) and itself.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises secondary elastic parts (18), which is delimited at one end with the secondary elastic part holder (19) and at the other end with the secondary vertical friction element (16), located, assembled between the secondary vertical friction elements (16) and the secondary elastic part holder (19) and which applies force in order to push these said two parts (19,16).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least secondary vertical friction elements (16) that can be connected to the hinge body (2) via the secondary vertical friction element shaft (17) and that can rotate around the secondary vertical friction element shaft (17) and which is at the same time delimited with the primary elastic part holder (10).
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises secondary elastic parts (18) that force the secondary vertical friction element (16) to rotate around the secondary vertical friction element shaft (17) via the power they produce.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a secondary vertical friction element (16) which tries to rotate with the force it obtains from the secondary elastic parts (18) and transfers this force to the primary elastic part holder (10) with which it is delimited with.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a primary elastic part holder (10) that moves relative to the hinge body (2) during its operation.
An oven hinge (1) with a friction system according to any of the preceding claims, characterized in that; it comprises at least a secondary vertical friction element (16) which is comparatively mobile relative to the primary elastic part holder (10) during the movement of the primary elastic part holder (10) relative to the hinge mechanism (1) said secondary vertical friction element being located inside the hinge body (2).