FI130502B - Door lock - Google Patents

Abstract

The force-transmitting surface form (12, 12A) of the screw (5) of the door lock according to the invention and the force-transmitting surface form (13, 13A) of the power transmission part (6) are arranged so that when the screw (5) and the power transmission part (6) turn, the button shaft (4 ) when turning, the contact point (10) between the screw and the power transmission part with the mentioned surface forms (12, 12A, 13, 13A) initially moves along the surface forms (12, 12A, 13, 13A) of the screw (5) and the power transmission part (6) until the button shaft (4) being moved closer to the extreme turning position of the button shaft, the contact point (10) slides on at least one of the mentioned surface forms (12, 12A, 13, 13A).

Description

Lock of the door

Engineering

The invention relates to a door lock that can be locked from the back and also has a so-called day use function.

Known technology

It is known that the door lock has a latch that can be rear-locked in the protruding — position. In this case, the end of the shaft outside the lock body of the door lock cannot be pushed into the lock body. In the door lock, it is also often possible that the tent is in a protruding position, not locked, so that it cannot be locked from the back. Such a non-lockable protruding tent can be in a slightly different location/position than a rear-locked tent.

The axle = is then said = to be in so-called = day use or — day use operation or day use position. The chest plate of the door lock usually has a small transfer switch, which can be used to get the door lock into the day use position. In this case, the door does not lock, even though it is closed.

In addition to the shaft, the lock frame also includes a button shaft. It is a rotating part/set of parts in the lock body with space for the button spindle. The button shaft is connected to the crank, which in turn is connected to the turnable power transmission part. The power transmission part is rotatably connected to the lock body. When the button

N is turned to open the door lock / door, the spindle of the button moves to the button

N to the torque applied by the force, which turns when the button shaft and spindle turn and

D transmits the force to the transmission part, which further transfers it to the frame. The tent moves

E 25 — due to the force transmitted linearly from the button inward to the lock body.

N The surfaces between the crank and the power transmission part are therefore affected when the door is opened

OF

A relatively large force that wears the surfaces of the crank and the transmission part. From wear and tear

OF

Due to I, the power transmission from the crank to the power transmission part can deteriorate and cause malfunctions.

Brief description of the invention

The purpose of the invention is to provide a solution that reduces the wear between the screw and the power transmission part. The solution is presented in an independent patent claim. Independent patent claims present different — embodiments of the invention.

The door lock according to the invention comprises a lock body. The lock body comprises a shaft, a push-button shaft, a screw connected to the push-button shaft and a reversible power transmission part.

The power transmission part is connected to the power transmission to the crank and the frame. The tent can be moved to the rear locking position outward from the lock frame and can be rear locked — to the rear locking position. The tent can also be moved to another non-locking projecting position outward from the lock body. The frame is also arranged to move from the mentioned projecting positions linearly into the lock body as a result of the torque applied to the button shaft, provided that the rear locking of the rear locking position is in neutral.

The force-transmitting surface shape of the crank and the power-transmitting surface shape of the power transmission part are arranged so that when the crank and the power transmission part turn, when the button shaft is turned, the contact point between the screw and the power transmission part with the mentioned surface shapes is moved by the initially rolling surface shapes of the crank and the power transmission part. The rolling movement of the contact point occurs until the button shaft has been turned closer to the extreme turning position of the button shaft, in which case the rolling of the contact point 10 changes to sliding on at least one of the mentioned > surface forms 12, 12A, 13, 13A.

O Because the contact surface between the screw and the transmission part is arranged to roll

At the beginning of turning the N button to open both the rear-locked door and the day-use door 2 25 — the wear between the crank and the transmission part is small. When moving = closer to the extreme turning position of the button, the touch point scrolling — changes to a sliding. There is sliding of the contact point on at least one of the mentioned surfaces

N is also relatively small, because it is moved from the rolling of the contact point and not therefore

N from a stationary state.

OF

Pattern list

In the following, the invention is described in more detail with reference to the accompanying figures, where

Figure 1 shows — an example — of a = door lock in the rear lock according to the invention,

Figure 2 shows — an example — of a = door lock according to the invention in day-use operation,

Figure 3 shows an example of a door lock according to the invention, when the button has been turned a little to move the rear-locked shaft inward into the lock body,

Figure 4 shows an example of a door lock according to the invention, when the button has been turned a little to move the carriage in day-use operation inward into the lock body,

Figure 5 shows an example of a door lock according to the invention, when the button has been turned — even closer to its extreme turning position,

Figure 6 shows an example of a door lock according to the invention, when the button has been turned to its extreme turning position, and

Figure 7 shows the feature of Figure 2 in more detail.

Description of the invention

Figure 1 shows an example of the door lock 1 according to the invention in the rear lock.

N Door lock 1 comprises a lock body 2. The lock body comprises an axle 3, a button shaft 4,

N of the screw 5 connected to the button shaft and the pivotable power transmission part 6. 2 25 — The power transmission part is in power transmission connection with the screw 5 and the frame 3. The power transmission part - is a lever or plate connected to the lock body with a pivot shaft arrangement 7, which

T

- the power transmission part of the ratio is reversible. The screw 5 turns when the button shaft = is turned. The button spindle can be connected to the button shaft 4. Button spindle

S is again connected to the button. Turning the button therefore turns its spindle and

NN 30 — button shaft and thus I also have a screw 5. The button and the button spindle are not shown in the figures. However, it can be stated that the button shaft 4 of the door lock is turned by the button connected to it.

The frame is = moveable to the rear locking position outward from the lock body 2 and can be rear locked to the rear locking position. When the tent is rear-locked, it cannot be pushed inside the lock body. The rear lock and the parts used in it are known in themselves, and not all of them are actually shown in the drawings, because they are not features of the invention in themselves.

It should be noted that the door lock shown in the figures is rear-lockable, i.e. it has parts for rear locking. The figures show a pin 8 attached to the frame 3, which is in a groove 9 in the power transmission part 6. When the rotation of the power transmission part 6 is prevented, the pin 8 prevents the movement of the frame inside the lock body 2. The anti-rotation mechanism of the power transmission part (not shown in the figures), the power transmission part 6 and the axle pin 8 are therefore the parts used in rear locking.

The frame can also be moved to another non-locking projecting position outward from the lock body 2. This position is shown in Figure 2. This non-locking projecting position is also called day use of the frame, = day use function or day use position. During daytime use, the tent does not go into the rear lock.

The frame 3 is also arranged to move from the mentioned projecting positions linearly inside the lock body due to the torque applied to the button shaft 4. Of course, this requires that the rear lock in the rear lock position is — in neutral, i.e. the rear lock is off. Normally, the rear lock can be removed with a key. The key is connected to the key shaft of the door lock 14. Turning the key usually turns the lock cylinder; which is connected by means of a torsion bar

N to the key shaft 14, so that the key shaft also turns. Turning the key shaft controls

For example, the blocking mechanism of the power transmission part 6 so that the power transmission part can 2 25 — turn, i.e. the frame 3 is no longer rear-locked and it can move inside the lock body. =

N Figures 3 — 5 show different situations in different positions of the button shaft 4, i.e. different positions of the button

N with turning angles. The extreme turning angle of the button shaft 4 and the button is shown in Figure 6,

N means in this case the tent and also its end has moved to the inside position, so the door can be opened.

OF

At the extreme turning angle, the button and therefore the button shaft can no longer be turned to open the door. The figures illustrate the operation of the invention.

It can be seen from the figures that the force-transmitting surface form 12, 12A of the screw 5 and the force-transmitting surface form 13, 13A of the power transmission part 6 are arranged so that 5 — when the screw 5 and the power transmission part 6 turn, when the button shaft 4 is turned, the contact point 10 between the screw and the power transmission part with the mentioned surface forms 12, 12A, 13, 13A is transferred.

When the button shaft (and the button) is turned to open the door, then — at the beginning the contact point 10 moves along the surfaces 12, 124, 13, 13A of the screw 5 and the power transmission part 6 until, with the button shaft 4 turned, it is even closer to the extreme turning position of the button shaft. The push-button shaft and thus also the twister therefore have a position where, when the push-button shaft is moved closer to the extreme position of the push-button shaft, the rolling movement of the contact point 10 changes to a sliding movement.

In this case, the contact point slides on at least one of the mentioned surface shapes 12, 12A, 13, 13A.

Because the contact surface 10 between the screw 5 and the power transmission part 6 is arranged to roll at the beginning of the button turn to open both the rear locked door and the door in day use, the wear between the screw 5 and the power transmission part 6 is small.

Closer to the extreme turning position of the button shaft / button, the contact point — (the sliding on at least one of the mentioned surfaces is also relatively minor, because it is moved from the rolling of the contact point and therefore from a stationary state. o In Figure 3, the button shaft 4 and therefore also the button has been turned a little in a rear-locked position

O in order to move the frame 3 inward to the lock body 2. The contact point 10 has rolled in Fig. 1

From the starting position shown by N, with the force-transmitting surface form 12 of the torsion bar 5, and 2 25 — with the force-transmitting surface form 13 of the power transmission part 6 to the point shown in figure 3.

E In the embodiment of the figures, the screw 5 comprises a cam 11, which comprises the mentioned

The surface shape 12 of the force-transmitting surface of the N screw 5. The shape of the cam can be different from the shape shown in figures 3. It can be wider, for example. In some embodiments, the spout

S can be more of a part of the basic shape of the twist.

The force-transmitting surface shape of the screw 5 comprises a concave section 12 on the side of the cam 11 stem and a convex section 12A at the end of the cam. The head and the convex part of the beak are described later in this text. The concave part 12 of the force-transmitting surface shape of the torque 5 is against the force-transmitting surface shape of the power transmission part 6, which — comprises a convex part 13. In addition to the convex part, the force-transmitting surface shape of the power transmission part 6 comprises a concave part 134, which will be examined later.

The concave part 12 of the twist and the convex part of the power transmission part 6 are in contact with each other at the contact point 10 — in the situations of figure 1 and figure 3 and also in intermediate situations of these figures. In other words, when the axle is in the rear locking position — the convex part 13 of the force-transmitting surface shape of the power transmission part 6 is against the concave part 12 of the force-transmitting surface shape of the torsion bar 5, as shown in the example in Figure 1. By turning the push-button shaft 4 a little, we move to the situation shown in figure 3. In the situation of Figure 3, the torsional turning has also turned the power transmission part 6 via the contact point 10, whereby the pin 8 connected to the frame 3 is at the bend 9A of the groove 9 of the power transmission part.

Figure 2 shows the initial situation, where the door lock according to the invention is in day-use operation, i.e. the frame 3 is in a non-locking protruding position, and the button shaft 4 (button) has already been turned so that the screw 5 hits the power transmission part 6. In general, the day-use position of the frame (Figure 2) is slightly different frame — from the rear locking position (fig. 1), where the frame is slightly more outside the lock body. Of course, it is also possible that the day-use position of the axle is arranged to be the same as the rear locking position of the axle.

N So with the axle in the second non-locking protruding position (Figure 2)

The convex portion 12A of the force-transmitting surface shape of N screw 5 at the end of the cam is against 2 25 — the boundary region 13B of the convex portion 13 of the force-transmitting surface shape of the power transmission part 6 and the concave portion 13A. The boundary region thus comprises a small part of the convex

E of section 13 and a small part of concave section 13A. Depending on the tolerances of the door lock parts and = the installation, the contact point 10 within the border area 13B can be

S more precisely defined by convex section 13, concave section 13A or

NN 30 for both. Figure 7 shows the boundary region 13B in more detail.

Figure 4 shows a situation in which the button shaft 4, i.e. also the button, has been turned a little to move the shaft 3 in the day-use function/position inward to the lock body 2. In the situation of Figure 4, the convex part of the force-transmitting surface shape of the screw 5 12A at the end of the cam 11 and the force-transmitting surface shape of the transmission part 6 — the concave part 13A are against each other and thus form a contact point 10.

The convex part 12A of the force-transmitting surface shape of the crank 5 at the cam end and the concave part 13A of the force-transmitting surface shape of the power transmission part 6 are arranged so that they enable the contact point to roll from the axle's day-use position (Figure 2) to the situation illustrated in Figure 4. This can also be observed in — Figure 7.

The situation presented in Figure 4 is also reached when the starting situation is the rear locking position of axle 3, which is illustrated in Figure 1. When the turning of the button shaft 4, i.e. also the button, is continued, we finally end up in the extreme turning position of the button shaft and therefore also in the extreme turning position of the button. Figure 6 shows — the situation of the door lock according to the invention, where the button shaft (and the button) has been turned to its extreme turning position. In this case, the pin 8 connected to the frame is at the other end of the groove 9 of the power transmission part 6, as shown in Figure 6. Figure 5 shows a situation where the button shaft of the door lock, and thus also the button, has been turned close to its extreme turning position.

Depending on the tolerances of the parts and installation of the door lock, the transition of the contact point between the torsion bar 5 and the power transmission part 6 from rolling to sliding occurs, for example, in the situation of Figure 4 or after there is a button shaft

N translated somewhat more. Because the crank and the transmission part are then already there

In a turning motion, switching to a sliding mode is a solution that consumes relatively few parts 2 25 —. This is because there is no rest friction. 2 The transition to the extreme turning position shown in Figure 6 from either of the starting situations mentioned above in a therefore takes place mainly at the rolling point of contact

N between screw 5 and transmission part 6. In the final phase of the transition, there is a slippery slope

10 displacements of N contact points.

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The solution according to the invention reduces the wear of the crank and the power transmission part. In addition, the transmission of power between the parts is efficient, as the power is directed from the screw 5 effectively to the turning of the power transmission part 6. The inventive solution has eliminated/reduced the tangential force between the surface form 12, 12A transmitting the torsional force and the surface form 13, 13A transmitting the force of the transmission part 6. In addition, the invention is arranged to work from two starting situations, ending in the extreme operating position of the button shaft (Figure 6). Starting situations therefore mean those situations where the screw 5 is in first contact with the power transmission part 6, when the door is opened from the rear lock or during day use.

The door lock according to the invention can be implemented in several different ways, as can be seen from the description above. For example, the screw and the transmission part may look different than the screw and the transmission part shown in the figures. The pictures also show parts that are not actually related to the invention. The invention is therefore not limited to the examples presented in this presentation, but can be implemented in different ways within the scope of the independent claim.

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Claims (7)

Patent Claims 1. A door lock (1) comprising a lock body (2), which lock body comprises a shaft (3), a button shaft (4), a screw (5) connected to the button shaft and a rotatable power transmission part (6), which power transmission part (6 ) is in power transmission connection with the bolt (5) and the frame (3), and each frame (3) can be moved to the rear locking position outward from the lock body (2) and can be rear locked to the rear locking position, and each frame (3) can also be moved to another non-locking projecting position outward from the lock body (2 ), and each frame (3) is arranged to move from the mentioned projecting positions linearly into the lock body (2) as a result of the torque applied to the button shaft (4) — provided that the rear locking of the rear locking position is in the neutral state, known — for the force-transmitting surface shape of the recess (5) ( 12, 12A) and the force-transmitting surface shape (13, 13A) of the power transmission part (6) are arranged so that when the screw (5) and the power transmission part (6) turn, when the button shaft (4) is turned, the contact point between the screw and the power transmission part (10 ) with the mentioned surface forms (12, 12A, 13, 13A) in the rear locking position or in the non-locking projecting position initially moves along the surface forms (12, 12A, 13, 13A) of the screw (5) and the transmission part (6) until the button shaft (4) is moved closer to — the extreme turning position of the button shaft, the contact point (10) slides on at least one of the mentioned surface forms (12, 12A, 13, 134). 2. A door lock according to claim 1, characterized in that the screw (5) comprises a cam (11), which comprises a surface form (12, 124) transmitting the force of the screw (5). 3. A door lock according to claim 2, characterized in that the surface shape transmitting the force N of the screw (5) comprises a concave section (12) on the side of the cam (11) stem and = a convex section (12A) at the end of the cam. a 25 4. A door lock according to claim 3, characterized in that the force-transmitting surface shape of the power transmission part (6) I comprises a convex part (13) and a concave part (13A). a OF 5. A door lock according to claim 4, characterized by the fact that when the carriage 3 is in the rear locking position, the convex part (13) of the force-transmitting surface form of the transmission part (6) is against the concave part (12) of the force-transmitting surface form of the cam (11) on the side of the cam (11) . 6. A door lock according to claim 4 or 5, characterized in that when the shaft is in the second non-locking projecting position, the convex part (12A) of the force-transmitting surface shape of the screw (5) at the cam end is against the convex part (13) of the force-transmitting surface shape of the power transmission part (6) ) and the boundary region (13B) of the concave portion (134). 7. A door lock according to claim 6, characterized in that the convex part (12A) of the force-transmitting surface shape of the screw (5) at the end of the cam and the concave part (13A) of the force-transmitting surface shape of the transmission part (6) are arranged so that they enable the contact point (10 ) scrolling. N O N > N I a a N N LO O N O N