EP3830366A1

EP3830366A1 - Self-locking push button

Info

Publication number: EP3830366A1
Application number: EP19748511.3A
Authority: EP
Inventors: Viktor Komkin
Original assignee: D La Porte Soehne GmbH
Current assignee: D La Porte Soehne GmbH
Priority date: 2018-07-30
Filing date: 2019-07-29
Publication date: 2021-06-09
Anticipated expiration: 2039-07-29
Also published as: EP3830366B1; US20210310275A1; DE102018212701A1; CN112513393A; WO2020025536A1

Abstract

The invention relates to a self-locking push button for unlocking a lock of a vehicle door, hood, cover or flap, in particular of an agricultural vehicle, e.g. a tractor, or of a construction machine.

Description

Self-locking push button

The present invention relates to a push button for unlocking a lock on a vehicle door, hood, cover or flap, in particular an agricultural vehicle, e.g. a tractor or a construction machine.

Such a vehicle door lock is known for example from DE 10 2006 012 956 A1. This vehicle door lock has a rotary latch arrangement with two rotary latches, between which a locking bolt can be placed. In a locked position of the vehicle door lock, the rotary latches encompass the locking bolt in such a way that the vehicle door is held in its closed position. The two rotary latches are held by two pawls in their position holding the locking bolt. The pawls therefore lock the rotary latches. This locking can be released using an operating lever. The operating lever engages in the lock case. Rotation of the actuating lever causes the pawls to release the rotary latches and then release the locking bolt.

The unlocking of a vehicle door lock, i.e. in the case of DE 10 2006 012 956 A1, the actuation of the actuation lever can be e.g. by means of a push button or a pull handle. The push button or pull handle then has an actuating mechanism for unlocking the lock, which in the case of DE 10 2006 012 956 A1 is connected to the actuating lever. The actuation mechanism can be opened and closed, e.g. by means of a cylinder lock. If the actuation mechanism is locked, the lock can no longer be unlocked. This is known per se.

A push button for unlocking such a vehicle door lock is known for example from DE 10 2015 224 218 A1. This push button points a cylinder lock with an actuating button with an actuating button housing and with a cylinder core mounted therein with plate tumblers. The cylinder core can be turned using the key by inserting a suitable key. This unlocks or unlocks the push button. Then the push button can be pressed. When the push button is released, it automatically returns to its unactuated and locked position, driven by spring force.

Furthermore, for safety hoods and other covers or vehicle flaps, for safety reasons, it has recently become mandatory according to EU Regulation No. 1322/2014 that these can only be opened with a tool. This is to prevent unauthorized persons from opening it. When closing, the hood or flap must then lock itself.

This EU regulation is currently fulfilled, for example, by a vehicle door lock with a rotary latch arrangement according to DE 10 2006 032 257 A1. This vehicle door lock has a drive element with a drive profile that can be brought into engagement with a tool. For example, the drive profile is a slot for engaging a screwdriver and / or an external or internal hexagonal profile. This creates security in that the vehicle door lock cannot be opened without tools by unauthorized persons, but no key is required to open it. If the flap or hood is closed, the vehicle door lock automatically returns to its original state. The object of the present invention is to provide a push button for unlocking a lock of a vehicle door, hood, cover or flap, in particular an agricultural vehicle, for example a tractor, or a construction machine, by means of which the EU Regulation No. 1322/2014 is fulfilled and has a high level of functional reliability. Another object is to provide a vehicle door, hood, cover or flap with such a push button.

This object is achieved by a push button with the features of claim 1 and a vehicle door, hood, cover or flap with the features of claim 31. Advantageous developments of the invention are characterized in the subsequent subclaims.

According to the invention, the push button is designed such that the actuating button carries out an automatic return stroke from its actuated, that is to say pressed, position into its unactuated, that is to say not depressed, starting position and the push button also automatically returns to its locked position. The actuating button is thus locked automatically or the push button is self-locking according to the invention. Automatically means that the drive is purely mechanical and automatic. There is therefore no manual locking using a key. However, the actuating button can only be unlocked if a suitable key is inserted into a locking cylinder core of the push button. In addition, the push button according to the invention is designed such that the key inserted in the locking cylinder core of the push button can only be removed when the push button has completely returned to its unactuated and locked position. Respectively. the key can only be removed in the unactuated and locked position of the push button.

In the following, the invention is explained in more detail by way of example using a drawing. Show it:

Figure 1: An exploded perspective view of the invention

push button

Figure 2: A first longitudinal section of the push button according to the invention in the locked position Figure 3: Another longitudinal section of the push button according to the invention in the locked position

Figure 4: A perspective view of the push button according to the invention in the locked position with the push button housing partially cut away

Figure 5: A perspective view of the push button according to the invention in the locked position without push button housing without spring

Figure 6: Another perspective view of the push button according to the invention in the locked position without the push button housing with spring Figure 7: Another perspective view of the push button according to the invention in the unlocked and actuated position with partially cut away push button housing

Figure 8: A cross section through the push button according to the invention in the locked position Figure 9: A cross section through the push button according to the invention in the unlocked position

Figure 10: A longitudinal section through the push button housing of the push button

11 shows a perspective top view of the push button housing from a second push button housing end from FIG. 12: a perspective view of an actuating button of the push button according to the invention

Figure 13: A longitudinal section through the control button

Figure 14: A perspective view of a bolt of the invention

Push button Figure 15: A top view of the latch FIG. 16: A perspective view of a push button coupled to a rotary latch lock

The push button 1 according to the invention (FIGS. 1-9, 16) has a push button housing 2, an operating button 3 mounted therein with a lock cylinder core 4, a bolt 5, a torsion pressure and leg spring 6, and one with the operating button 3 connected coupling element 7. In addition, the push button 1 has a linear actuation axis 8. When viewed in the direction of the actuation axis 8, the push button 1 has a first push button end or push button insertion end 1 a and a second push button end or push button actuating end 1 b.

Unless otherwise stated, the terms “axial”, “coaxial”, “in the circumferential direction”, “radial” or “rotationally symmetrical” in the following refer to the actuation axis 8.

The push button housing 2 (FIGS. 1-11) has a hollow cylindrical or tubular housing wall 9 with a housing wall outer surface 9a and a housing wall inner surface 9b. The push button housing 2 has seen in the direction of the actuation axis 8 a first housing end or Ge housing inserting 2a and a second housing end or housing actuation end 2b. In addition, the push button housing 2 in the direction of the actuation axis 8 through the push button housing 2 continuous housing recess 10.

The push button housing 2 is preferably made of plastic or, preferably die-cast metal, preferably made of, preferably die-cast zinc. At the first housing end 2a, the push button housing 2 preferably has a circumferential, radially projecting from the housing wall outer surface 9a on the mounting collar 11, which serves as a stop during the mounting of the push button 1 in the vehicle door, flap or hood. In addition, the housing wall outer surface 9a optionally has an external thread 19 for mounting of the push button 1 in the vehicle door, flap or hood.

At the second housing end 2b, the push-button housing 2 has a circumferential ring-shaped housing base 12 which projects radially inward from the housing wall inner surface 9b. The housing base 12 has a first inner bottom side 12a facing the first housing end 2a and an outer bottom side 12b facing this in the direction of the actuation axis 8 and facing the second housing end 2b.

The push button housing 2 also has a pipe socket 13 which adjoins the inner bottom side 12a and protrudes from the latter in the direction of the actuation axis 8. The pipe socket 13 has a socket wall 14 with a socket wall outer surface 14a and a socket wall inner surface 14b. The pipe socket 13 is formed rotationally symmetrical to the actuation axis 8.

Furthermore, the pipe socket 13 has a connected socket end and a free socket end opposite this in the direction of the actuation axis 8. At the free nozzle end, the nozzle wall 14 has a nozzle wall end face 14c.

The pipe socket 13 also has four guide slots 15 which, starting from the free socket end, extend parallel to the actuation axis 8 into the pipe socket 13 and through it. The guide slots 15 also extend through the housing base 12. They thereby divide the pipe socket 13 into four socket segments 16 spaced apart from one another in the circumferential direction. The guide slots 15 each have two slot guide surfaces 17 which extend parallel to the actuation axis 8 and are adjacent to one another in the circumferential direction. The slot guide surfaces 17 are formed on the nozzle segments 16.

In addition, the push button housing 2 has a spring support rib 18 which protrudes from the inside of the housing base 12. The spring support rib 18 is used to support the torsion pressure and leg spring 6. It extends between a stub segment 16 and the housing wall inner surface 9b.

The actuating button 3 (Fig. 1-9,12,13) has a longitudinal extension in the direction of the actuating axis 8. In addition, viewed in the direction of the actuation axis 8, it has a first actuation button end or actuation button inserting 3a and a second actuation button end or actuation button actuation end 3b.

The actuating button 3 preferably consists of, preferably die-cast, metal, preferably of, preferably die-cast, zinc or of die-cast zinc.

In addition, the actuating button 3 has a tubular actuating button housing 20 for receiving the lock cylinder core 4 and a sleeve 21 and two connecting webs 22.

The actuating button housing 20 has a tubular cylinder housing wall 23 in a manner known per se. In addition, the actuating button housing 20 has a through opening 24 in the direction of the actuating axis 8 through the actuating button housing 20. The actuation button housing 20 also has a first actuation button housing end 20a and a second actuation button housing end 20b opposite the first actuation button housing end 20a in the direction of the actuation axis 8.

Preferably, the cylinder housing wall 23 also has a sealing ring receiving groove 25 which extends in the circumferential direction and is open to the outside. The sealing ring receiving groove 25 is used in a manner known per se for receiving sealing and guide rings 26. A slot 27 is used in a manner known per se for receiving a securing device which additionally limits a mounting tumbler or locking tumbler radially.

The two connecting webs 22 are used to connect the sleeve 21 to the Actuator button housing 20. They are arranged radially opposite one another as seen in relation to the actuation axis 8. Furthermore, the two connecting webs 22 are preferably designed in the shape of a cylindrical tube segment and have a web outer surface 22a and an inner web surface 22b. The connecting webs 22 adjoin the second actuating button housing 20b at the second actuating button housing 20 and extend in the direction of the actuating axis 8 away from the actuating button housing 20.

At the second actuation button housing end 20b, the connecting webs 22 also preferably have a widened web foot 28. The web feet 28 each have an extension in the circumferential direction and seen from the web surface 22a in the radial direction to the outside in relation to the actuation axis 8. In addition, they preferably each have two lateral web foot surfaces 28a. The web foot surfaces 28a delimit the web feet 28 in the circumferential direction.

Furthermore, the two connecting webs 22 each have a first guide strip 29 projecting from the outer web surface 22a in the radial direction. The guide strips 29 have a longitudinal extension parallel to the actuation axis 8. They extend towards the sleeve 21 and are also molded onto this, which will be discussed in more detail below.

The cylindrical sleeve 21 has a sleeve wall 30 with a sleeve wall outer surface 30a and a sleeve wall inner surface 30b and two sleeve wall end faces 30c. Furthermore, the sleeve 21 has a sleeve cutout 21a which extends through the sleeve 21 in the direction of the actuation axis 8. The sleeve recess 21a preferably has an internal thread.

As already explained, the guide strips 29 extend up to and along the sleeve 21 and are also integrally formed thereon. In particular, the sleeve wall outer surface 30a is integrally formed and protrudes therefrom radial direction.

The first guide strips 29 each have a free strip end face 29a facing the second actuation button end 3b, as well as two strip side surfaces 29b spaced apart in the circumferential direction and an outer strip circumferential surface 29c. The last end face 29a is preferably flush with the sleeve wall end face 30c arranged on the second actuating button end 3b. Furthermore, the ledge end face 29a is preferably perpendicular to the actuation axis 8. The ledge peripheral surface 29c is preferably circular-cylindrical. The two strip side surfaces 29b are preferably parallel to one another and parallel to the actuation axis 8.

The sleeve 21 also has two second guide strips 31, which are likewise molded onto the outer surface 30a of the sleeve and protrude from it in the radial direction. The second guide strips 31 also extend in the axial direction. They are also preferably arranged opposite one another in the radial direction. A second guide bar 31 is also arranged between the two first guide bars 29.

The two second guide strips 31 also each have two free strip end faces 31a, b and two strip side surfaces 31c spaced apart in the circumferential direction and an outer strip peripheral surface 31d.

The first ledge end face 31a facing the first actuation button end 3a preferably ends flush with the nozzle wall end face 14c. And the second strip end face 31b facing the second actuation button end 3b preferably ends flush with the sleeve wall end face 30c arranged on the second actuation button end 3b or with the strip end faces 29a of the first guide strips 29.

Furthermore, the ledge end face 31 a; b is preferably perpendicular to the actuation axis 8. The ledge peripheral surface 31 d is preferably circular-cylindrical trained. The two strip side surfaces 31 c are preferably parallel to one another and parallel to the actuation axis 8.

As already explained, the actuating button housing 20 serves to accommodate the locking cylinder core 4. The lock cylinder core 4 preferably consists of, preferably die-cast metal, preferably of, preferably die-cast, zinc.

The lock cylinder core 4 (FIGS. 1-4) has a first cylinder core end or cylinder core inserting end 4a and a cylinder core end or cylinder core actuation end 4b opposite this in the direction of the actuation axis 8. In addition, the lock cylinder core 4 has a, in particular cylindrical, core body 32 with a, preferably circular cylindrical, outer body surface. The lock cylinder core 4 also has, in a manner known per se, a key channel which extends parallel to the actuation axis 8 from the first cylinder core end 4a into the lock cylinder core 4, in particular the core body 32, and which extends perpendicularly to the lock cylinder core 4, in particular the core body 32 penetrating plate guide slots 33 on. The platelet guide slots 33 are arranged adjacent to one another in the axial direction. In each plate guide slot 33, two spring-loaded plate tumblers 34 are preferably each arranged. In addition, a locking tumbler 35 is arranged in a further guide slot which, in a manner known per se, serves for the cylinder core 4 to be axially immovably mounted in the actuating button housing 20.

If no suitable key is inserted into the locking cylinder core 4, the plate tumblers 34 are pressed by means of springs 36, not shown, radially opposite locking grooves of the actuating button housing 20, so that the locking cylinder core 4 in the actuating knob housing 20 cannot be rotated about the actuating axis 8. If a suitable key sel is introduced, the plate tumblers 34 are inserted in the lock cylinder core 4 retracted so that the lock cylinder core 4 can be rotated about the actuation axis 8 in the actuation button housing 20. This is known per se. The locking mechanism can also be designed differently. The locking mechanism is preferably designed in accordance with German patent application DE 10 2015 000 213 A1.

The core body 32 also has a core end face 37 at the second cylinder core end 4b, which is preferably perpendicular to the actuation axis 8.

In addition, the lock cylinder core 4 has a, preferably strip-like, actuation segment 38 which protrudes from the core end face 37 in the direction of the actuation axis 8. The actuating segment 38 is preferably elongated and has a central section with a circular cross section, the central axis of which is preferably coaxial with the actuating axis 8. It preferably has a longitudinal extent perpendicular to the actuation axis 8.

The bolt 5 (FIGS. 1-9, 14, 15) or the locking element 5 has a bush-shaped or sleeve-shaped middle part 39 with a bush recess 40 which passes through the middle part 39 in the axial direction. A central axis of the socket recess 40 is preferably parallel, preferably coaxial, to the actuation axis 8. Furthermore, the latch 5 has a first latch end 5a facing the push-button-inserting 1 a and an opposite latch end 5b facing the push-button actuating end 1 b in the axial direction on.

A bolt wall 41 has an outer bolt wall surface 41a and two opposite bolt wall end faces 41b in the axial direction. The bolt wall outer surface 41 a is arranged around the actuation axis 8. The two transom wall end faces 41 b are preferably flat and perpendicular to the actuation axis 8.

The latch 5 preferably consists of, preferably die-cast, metal, preferably of, preferably die-cast, zinc or of die-cast zinc. The bolt 5 also has two cylindrical stops 42 which connect on the outside to the socket-shaped central part 39 and protrude from it in the radial direction. The cylindrical stops 42 each have a circular cylindrical stop outer surface 42a. In addition, they face each other in a radial direction. They serve as a stop on the actuating button 3 in an unlocked position of the push button 1, which is discussed in more detail below.

Furthermore, the latch 5 has two locking bars 43, which connect to one of the cylindrical stops 42 on the outside and protrude from the latter in the radial direction. The two locking strips 43 lie opposite each other in the radial direction.

The two locking strips 43 also each have two free locking strip end faces 43a, b and two circumferentially spaced blocking strip side surfaces 43c and an outer blocking strip peripheral surface 43d. Furthermore, the locking bar end faces 43a, b are preferably perpendicular to the actuation axis 8. The locking bar peripheral surface 43d is preferably circular-cylindrical. The two locking bar side surfaces 43c are preferably parallel to one another and parallel to the actuation axis 8.

The bolt 5 also has at least one, preferably two, spring receiving grooves 44, which extend into the bolt 5 as seen from the first bolt end 5a. In addition, they extend in a direction perpendicular to the actuation axis 8 through the bolt 5 through. The two Federauf receiving grooves 44 also preferably run parallel to each other. Furthermore, they preferably run obliquely to the locking bar side surfaces 43c. If two spring receiving grooves 44 are present, this simplifies assembly, since there is no need to pay attention to the alignment of the bolt 5.

In addition, the bolt 5 has an actuating segment receiving groove 45 for receiving the actuating segment 38. The actuating segment receiving groove 45 also extends from the first bolt end 5a into FIG Latch 5 into it. In addition, it also extends through the bolt 5 in a direction perpendicular to the actuation axis 8. It also preferably runs parallel to the spring receiving grooves 44.

The actuating segment receiving groove 45 is delimited by two groove side surfaces 45a and one groove bottom surface 45b. The groove bottom surface 45b is preferably perpendicular to the actuation axis 8. The two groove side surfaces 45a lie opposite one another in the radial direction. In addition, they each have a central surface section 46, which is circular-cylindrical, with an axis of rotation of the surface section 46 preferably being coaxial with the actuation axis 8. The two groove side surfaces 45a also each have two flat surface sections 47; 48, which are preferably parallel to the actuation axis 8. The flat surface sections 47; 48 of the two groove side surfaces 45a are preferably parallel to one another.

The coupling element 7 serves to couple the push button 1 to the actuating mechanism 49 of a lock 50 (FIG. 16). In particular, the coupling element 7 is used for connection to a corresponding, corresponding coupling element 51 of the lock mechanism, which is arranged outside the push-button housing 2. The lock 50 is preferably a rotary latch lock with at least one rotary latch 52. When viewed in the direction of the actuation axis 8, the coupling element 7 has a first coupling element end 7a and a second coupling element end 7b opposite this. At the first coupling element end 7a, the coupling element 7 is firmly connected to the actuation button 3. The second coupling element end 7b serves to couple the coupling element 7 to the actuating mechanism 49 of the lock 50.

The coupling element 7 (FIG. 1) has a base plate 53 and two connecting pieces 54; 55. The first connecting piece 54 extends from the Base plate 53 away or protrudes from this in the direction of the first coupling element end 7a. The second connecting piece 55 protrudes from the base plate 53 in the direction of the second coupling element end 7b.

The first, preferably stepped, connecting piece 54 has a circular-cylindrical pin 56 at its free end. At its connected end, the first connecting piece 54 has a circular cylindrical Stutzenab section 57 with an external thread. The pin 56 has a smaller outer diameter than the circular cylindrical nozzle section 57.

The second connecting piece 55 is preferably also stepped and preferably has three connecting piece sections 58a; b; c, the outside diameter of which gradually decreases towards the second coupling element end 7b. The nozzle section 58c arranged at the free end also preferably has an external thread for connection to the actuating mechanism 49.

As already explained, the push button 1 also has the torsion pressure and leg spring 6.

In the case of a spiral torsion spring, the main direction of loading runs in the direction of the spring axis, the spring ends being able to twist slightly against one another. The wire cross-section is subjected to torsion under load. A distinction is made between tension and compression springs depending on the external load.

A leg spring is a coil spring that is subjected to bending about its axis. A torque is thus initiated.

The torsion pressure and leg spring 6 is subjected to both pressure and bending.

The torsion pressure and leg spring 6 has a spring axis co-axial to the actuation axis 8 and, seen in the direction of the actuation axis 8, a first and a second spring end 6a; 6b. In addition, the torsional pressure and leg spring 6 a screw winding 59 made of spring wire with two bent spring wire ends 59a; 59b. The spring wire ends 59a; 59b preferably extend perpendicular to the actuation axis 8.

The torsion pressure and leg spring 6 is preferably made of metal or plastic.

The mode of operation of the push button 1 according to the invention is now explained below:

In the assembled, locked state of the push button 1 according to the invention (FIGS. 2-6, 8), the actuating button 3 within the push button housing 2 is initially immovably moved in the direction of the actuating axis 8. At the first push button end 1 a, the operating button 3 protrudes from the push button housing 2. The sealing and guide rings 26 are arranged in the sealing ring groove 25 and are slidable back and forth in the direction of the actuation axis 8 on the housing wall inner surface 9b of the housing wall 9 of the push-button housing 2.

In addition, the first and second guide strips 29; 31 of the actuating button 3 are arranged within the guide slots 15 of the push-button housing 2. The two guide bar side surfaces 29b; 31c each abut the slot guide surfaces 17. As a result, the actuating button 3 with the push button housing 2 is non-rotatable about the actuating axis 8

Connection.

The lock cylinder core 4 is arranged in a manner known per se within the actuation button housing 20. The actuating segment 38 of the locking cylinder core 4 protrudes from the actuating button housing 20. In the direction of the actuation axis 8, the lock cylinder core 4 is immovably connected to the actuation button housing 20 by means of the locking tumbler 35. As long as no suitable key is inserted into the lock cylinder core 4, the lock cylinder core 4 is also connected to the actuation button housing 20 such that it cannot be rotated about the actuation axis 8, since the plate tumblers 34 are arranged within the locking grooves of the actuation button housing 20. The push button 1 is therefore locked or locked.

The latch 5 is arranged between the actuating button housing 20 and the sleeve 21. In addition, as seen in the radial direction, it is arranged between the two connecting webs 22. It also lies with the two stops

42 on the two connecting webs 22 (FIG. 8). The actuating segment 38 of the lock cylinder core 4 is also positively arranged in the actuating element receiving groove 45 of the bolt 5. As a result, the bolt 5 is non-rotatably connected to the lock cylinder core 4 about the actuation axis 8. Respectively. the bolt 5 is connected to the locking cylinder core 4 so as to be rotatable about the actuation axis 8. In the locked, non-actuated position of the push button 1, the bolt 5 is also rotated in relation to the sleeve 1 in such a way that the locking bar strips 43 are rotated in relation to the second guide strips 31 of the sleeve 21. The Rie gel locking bars 43 and the second guide bars 31 are not aligned in the axial direction. In addition, the locking bars 43 are not aligned with the guide slots 15, but aligned with the nozzle segments 16 of the push button housing 2. The locking bars

43 are preferably in contact with the second blocking bar end faces 43b on the nozzle wall end face 14c. As a result, the movement of the actuation button 3 in a linear push button actuation direction 60 parallel to the actuation axis 8 is blocked. The actuating button 3 cannot be pressed into the push button housing 2 or it cannot be pressed or actuated. The nozzle wall end face 14c or the nozzle segments 16 which act as an abutment for the movement of the actuating button 3 in the push button actuating direction 60 The torsion pressure and leg spring 6 is also arranged within the push button housing 2. In particular, the torsion pressure and torsion spring 6 is supported on its second spring end 6b on the push button housing 2, preferably on the spring support rib 18 and on the inside in the axial direction on the housing base 12.

In addition, the torsion pressure and leg spring 6 is arranged around the sleeve 21 and the connecting webs 22 of the actuating button 3 and around the bolt 5. The torsion pressure and torsion spring 6 is supported on the first spring end 6a on the bolt 5. It is arranged in particular at its first spring end 6a in one of the two spring receiving grooves 44 of the bolt 5. In addition, it is supported in the axial direction on its first spring end 6a on the actuating button housing 20.

The torsion pressure and leg spring 6 is thus clamped between the actuating button 3 and the push button housing 2 parallel to the actuating axis 8 and presses the actuating button 3 and the push button housing 2 apart. Respectively. the actuating button 3 is connected to the torsion pressure and torsion spring 6 counter to the linear push button actuation direction 60 in relation to the push button housing 2. Respectively. the push-button torsion spring 6 urges the operating button 3 out of the push-button housing 2. In addition, as explained, the first spring wire end 59a of the torsion pressure and torsion spring 6 is arranged within the spring receiving groove 44 of the bolt 5, and the second spring wire end 59b is supported on the spring support rib 18 of the push-button housing 2. As a result, the bolt 5 can be rotated relative to the push button housing 2 in an unlocking direction 61 only against the force of the torsion pressure and torsion spring 6 about the actuation axis 8. The torsion pressure and leg spring 6 is in the locked state of the push button 1 is preferably biased. It is therefore also biased in one direction around the spring axis. As a result, the bolt 5 and above this the lock cylinder core 4, with the torsional pressure and see kelfeder 6 against the unlocking direction 61 relative to the push button housing 2 in its locking or locking position drivable in connec tion. Respectively. the torsion pressure and leg spring 6 presses the bolt 5 into its locking or locking position. The two connecting webs 22 serve as abutments for the rotary movement of the bolt 5 against the unlocking direction 61.

At the second push-button end 1 b, the first connection piece 54 with the circular cylindrical nozzle section 57 is screwed into the internal thread of the sleeve recess 21a of the sleeve 21. The coupling element 7 is thus firmly connected to the actuating button 3. The base plate 53 lies on the outside of the push button housing 2. As a result, the movement of the actuation button 3 is locked against the push button actuation direction 60. The actuation button 3 is parallel to the actuation axis 8 relative to the push button housing 2 immovable. The pin 56 of the first connection piece 54 is also arranged in a form-fitting manner in the socket recess 40 of the bolt 5. The bolt 5 is thus rotatably mounted on the pin 56 about the actuation axis 8.

In summary, in the locked and not unlockable or locked state of the push button 1, that is, as long as no suitable key has been inserted into the locking cylinder core 4, the locking cylinder core 4, the operating button 3, the bolt 5 and the push button housing 2 rotatable relative to one another about the actuation axis 8. In addition, the Actuate supply button 3 can not be pressed in the push button actuation direction 60 in the push button housing 2, so not be operated. Also, it cannot be moved against the push button actuation direction 60 relative to the push button housing 2. Actuating button 3 and push button housing 2 are firmly connected to one another or locked to one another in the locked state.

To unlock or unlock the push button 1, a suitable key is now in the push button actuation direction 60 in the locking cylinder core 4 plugged in. As a result, the plate tumblers 34 are drawn out of the locking grooves of the actuating button 3 into the interior of the lock cylinder core 4. The lock cylinder core 4 is thus unlocked or unlocked or unlockable ent. Because now the lock cylinder core 4 can be rotated relative to the actuation button 3 by means of the key in the unlocking direction 61.

Since the bolt 5 via the actuating segment 38 with the lock cylinder core

4 is non-rotatably connected about the actuation axis 8, the bolt

5 rotated with the rotation of the lock cylinder core 4.

In particular, the two locking bars 43 are rotated until they are aligned with the guide slots 15 of the push button housing 2 and the second guide bars 31 of the actuating button 3. The latch 5 can in particular be rotated until the stops 42 again strike the connecting webs 22 of the actuating button 3 (FIG. 9). The connecting webs 22 thus also serve as an abutment for the movement of the bolt 5 in the push-button unlocking direction 61. The bolt 5 can be rotated back and forth between the connecting webs 22. The torsion pressure and leg spring 6 is tensioned because the spring wire ends 59a, 59b are pushed apart or the spring wire end 59a is rotated about the spring axis against the spring torque. The actuation button 3 is now in the unlocked but still unactuated state. The movement of the actuating button 3 in the push button actuation direction 60 is thus no longer blocked. Now the actuating button 3 can be pressed in the push button actuating direction 60 into the push button housing 2, that is to say actuated. If the operating button 3 is operated by the operator by being pressed into the push button housing 2 in the push button operating direction 60, he takes the bolt 5 with him. The bolt locking bars 43 of the bolt 5 are inserted into the guide slots 15 and along them in the axial direction guided. As a result, the bolt 5 can no longer be rotated about the actuation axis 8 relative to the actuation button 3 and the push button housing 2. This also applies to the locking cylinder core 4. The operator therefore no longer has to apply any force in the unlocking direction 61 to prevent rotation against the unlocking direction 61.

When pressing the actuation button 3, that is during the actuation stroke bes, the torsion pressure and leg spring 6 is also compressed and thereby tensioned.

The actuating button 3 can be pushed in at most until the web feet 28 of the connecting webs 22 abut the nozzle segments 16 (FIG. 7).

With the actuating button 3, the coupling element 7 in the direction of the push button actuation direction 60 is shifted ben to the push button housing 2 ben. As a result, the actuating mechanism 49 of the lock mechanism is actuated in a manner known per se such that the lock 50 is unlocked (FIG. 16).

Immediately after the operator releases the actuating button 3, the actuating button 3 together with the bolt 5 is pressed or moved back against the push button actuation direction 60, in particular by the force of the torsion pressure and leg spring 6. It is thus pushed out of the push button housing 2 again or moved. The bolt 5 is taken along.

Since the bolt 5 is guided here with the bolt locking strips 43 in the guide slots 15 of the actuating button 3, it cannot initially turn back against the unlocking direction 61 relative to the actuating button 3 during the return stroke. The same applies to the locking cylinder core 4. Both perform a purely linear movement. As a result, the key cannot be pulled out of the lock cylinder core 4 either. Because the Plate tumblers 34 are twisted in a manner known per se in relation to the locking grooves of the actuating button 3 and can therefore no longer escape into them.

As soon as the locking bar strips 43 have moved out of the guide slots 15 of the actuating button 3, the locking bar 5, together with the locking cylinder housing 4, rotates back against the unlocking direction 61 into its unactuated, locking starting position.

In this position, the key can then be removed by the operator, since the plate tumblers 34, driven by the springs 36, can move into the locking grooves of the actuating button 3 in a manner known per se. After removing the key, the lock cylinder core 4 is non-rotatably connected to the actuating button 3 again. The lock cylinder core 4 is thus locked or the actuating button or the push button 1 cannot be unlocked or locked or locked. The push button 1 is thus again in its locked and non-unlockable or locked starting position and can only be unlocked again by inserting a suitable key and then actuated.

The push button 1 according to the invention ensures a high level of protection against unauthorized persons from opening the vehicle door, hood or flap. Because the push button 1 locks itself automatically after the return stroke of the actuating button 3, that is to say without actuation by means of the key, the key need not be turned. This is done automatically and purely mechanically, preferably by spring forces. This is an important safety aspect in particular in the case of hoods, in particular bonnets and flaps of a vehicle, in order to avoid accidents. The key only has to be removed so that the release of the push button 1 is blocked.

It is also particularly advantageous that the key cannot be removed either during the actuation stroke or during the return stroke, since the lock cylinder core 4 neither during the actuation stroke nor during of the return stroke can rotate relative to the operating button 3. This is an additional safety function. Because if the push button 1 does not move back into the unactuated and unlocked position due to dirt within the push button 1, the key cannot be removed either. And this would be noticed by the operator, so that they can lock the push button manually and thus ensure that the push button 1 is always locked.

The structure of the push button 1 according to the invention is also very simple with few parts and because of that also very reliable. In addition, the push button 1 is inexpensive to manufacture and easy to assemble.

Claims

Expectations

1. push button (1) for unlocking a lock of a door, hood,

Cover or flap, in particular an agricultural vehicle, e.g. a tractor or a construction machine, comprising a) a push button housing (2),

b) in the push button housing (2), an actuating button housing (20) having actuating button (3) which has an unactuated and an actuated position,

c) a locking mechanism for locking the actuating button (3) in its unactuated position, the actuating button (3) in its unlocked state linearly along an actuation axis (8) in a push button actuation direction (60) from its unactuated position into its actuated Position can be moved relative to the push button housing (2),

d) a cylinder lock with a lock cylinder core (4) mounted in the actuating button housing (25) and a matching key,

e) the actuating button (3) can only be unlocked when the pas-transmitting key is inserted into the lock cylinder core (4), f) the push button (1) is designed such that the actuating button (3) automatically from its actuated position returns to its unactuated position and is locked automatically,

characterized in that

the key inserted in the lock cylinder core (4) can only be removed in the unactuated and locked position of the push button (1).

2. push button (1) according to claim 1,

characterized in that the push button (1) is designed such that the actuating button (3), driven by spring force, returns from its actuated position to its unactuated position and is locked, driven by spring force.

3. push button (1) according to claim 1 or 2,

characterized in that

the key cannot be removed neither during the actuation stroke nor during the return stroke, preferably in that the lock cylinder core (4) cannot be rotated relative to the actuation button (3) during the actuation stroke and during the return stroke.

4. push button (1) according to any one of the preceding claims,

characterized in that

the lock cylinder core (4) is non-rotatably connected to the actuation button housing (20) around the actuation axis (8) as long as no suitable key has been inserted into the lock cylinder core (4), and the lock cylinder core (4) after insertion of the appropriate key relative to Actuator button housing (20) in an unlocking direction (61) about the actuation axis (8) can be rotated, and the actuation button (8) can be unlocked by rotating the cylinder core (4) relative to the actuation button housing (20) in the unlocking direction (61).

5. push button (1) according to any one of the preceding claims,

characterized in that

the actuating button (3) in its locked position parallel to the actuating axis (8) is immovably connected to the push button housing (2) in connection.

6. push button (1) according to any one of the preceding claims characterized in that

the actuating button (3) is non-rotatably connected to the push button housing (2) about the actuating axis (8).

7. push button (1) according to any one of the preceding claims,

characterized in that

the push button (1) has at least one spring, in particular a torsion pressure and leg spring (6), with which the actuating button (3) is drivably connected in relation to the push button housing (2) against the push button actuating direction (60) and / or with which the locking cylinder core (4) against the unlocking direction (61) is drivable in connection.

8. push button (1) according to any one of the preceding claims,

characterized in that

the push-button housing (2) has a housing insertion end (2a) and a housing actuating end (2b), the push-button housing (2) at the housing actuation end (2b) having a circumferential annular housing base (12) projecting radially inward from a housing wall (9) ) having.

9. push button (1) according to claim 8,

characterized in that

the push-button housing (2) has a pipe socket (13) which adjoins the housing base (12) and protrudes axially therefrom and extends towards the housing insertion end (2a), the pipe socket (13) having a connected socket end and a this in the axial direction opposite, free nozzle end, and wherein the pipe socket (13) has several, preferably four, guide slots (15), which starts from the free nozzle end in extend axially into the pipe socket (13) and through it and through the housing base (12).

10. push button (1) according to any one of the preceding claims,

characterized in that

the actuating button (3) has the tubular actuating button housing (20), a sleeve (21) and two connecting webs (22) which connect the sleeve (21) to the actuating button housing (20), the connecting webs (22) preferably being located radially opposite one another are arranged.

11. push button (1) according to claim 10,

characterized in that

the connecting webs (22) each have a radially outwardly projecting first, axially extending, guide strip (29), the guide strips (29) each extending up to and along the sleeve (21) and radially thereafter project from the outside of a sleeve wall (30) of the sleeve (21).

12. push button (1) according to claim 10 or 11,

characterized in that

the sleeve (21) has two second, extending in the axial direction, Füh approximately (31), which protrude from the sleeve wall (30) in the radial direction to the outside, the second guide strips (31) are preferably arranged opposite one another in the radial direction and / or wherein preferably a second guide bar (31) is arranged between two first guide bars (29).

13. push button (1) according to any one of the preceding claims,

characterized in that

the push button (1) for locking the actuating button (3) one Has latch (5), by means of which the movement of the actuating button (3) in the push button actuating direction (60) can be blocked.

14. push button (1) according to claim 13,

characterized in that

the actuating button (3) can be unlocked by rotating the bolt (5) relative to the actuating button (3) and / or relative to the push button housing (2) in the unlocking direction (61).

15. push button (1) according to claim 13 or 14,

characterized in that

the bolt (5) has a plurality of, preferably two, locking bolt strips (43) extending in the axial direction, which protrude outward in the radial direction and preferably lie opposite one another in the radial direction.

16. push button (1) according to any one of claims 13 to 15,

characterized in that

the bolt (5) has at least one spring receiving groove (44) in which the spring, in particular the torsion pressure and torsion spring (6), is supported with its first spring end (6a).

17. push button (1) according to any one of claims 13 to 16,

characterized in that

the lock cylinder core (4) with the bolt (5) around the actuation axis

(8) is non-rotatably connected.

18. push button (1) according to claim 17,

characterized in that the bolt (5) has an actuating segment receiving groove (45) in which an actuating segment (38) of the lock cylinder core (4) is arranged in a form-fitting manner such that the lock cylinder core (4) with the bolt (5) cannot be rotated about the actuation axis (8) in Connection is established.

19. push button (1) according to any one of the preceding claims,

characterized in that

the lock cylinder core (4) is immovably mounted in the actuation button housing (20) in the direction of the actuation axis (8).

20. push button (1) according to any one of claims 12 to 19,

characterized in that

in the locked state of the push button (1), the first and second guide strips (29; 31) of the actuating button (3) are each arranged within one of the guide slots (15) of the push button housing (2), so that the actuating button (3) with the push button housing (2) is non-rotatably connected about the actuation axis (8).

21. push button (1) according to any one of claims 13 to 20,

characterized in that

the bolt (5) seen in the axial direction between the actuation button housing (20) and the sleeve (21) and seen in the radial direction between the two connecting webs (22).

22. push button (1) according to any one of claims 15 to 21,

characterized in that

the bolt (5) in the locked position of the push button (1) is rotated in relation to the sleeve (1) in such a way that the bolt locking bars (43) are twisted in relation to the second guide bars (31) of the sleeve (21) and the locking bar bars (43) not in axial alignment with the leading tion slots (15) are arranged, but abut on a nozzle wall end face (14c) of the pipe socket (13), so that the movement of the actuating button (3) in the push button actuating direction (60) is blocked ge.

23. push button (1) according to any one of claims 13 to 22,

characterized in that

the bolt (5) and, via this, the lock cylinder core (4), with the spring, in particular the torsion pressure and torsion spring (6), counter to the unlocking direction (61) relative to the push button housing (2) and / or relative to the actuating button (3) is drivably connected.

24. push button (1) according to any one of claims 13 to 23,

characterized in that

When the push button (1), the lock cylinder core (4), the actuating button (3), the bolt (5) and the push button housing (2) are locked and not unlocked, they cannot be rotated relative to each other about the actuating axis (8).

25. push button (1) according to any one of claims 15 to 24,

characterized in that

in the unlocked state of the push button (1) the two locking bars th (43) aligned in the axial direction to the guide slots (15) of the push button housing (2) and / or aligned in the axial direction to the second guide strips (31) of the actuating button (3) are.

26. push button (1) according to any one of claims 15 to 25,

characterized in that the two locking bars (43) in the unactuated state of the actuation button (3) outside the guide slots (15) of the push button housing (2) are arranged so that the bolt (5) and the lock cylinder core (4) relative to the actuating button when the key is inserted

(3) and the push button housing (2) about the actuation axis (8) are rotatable ver.

27. push button (1) according to any one of claims 15 to 26,

characterized in that

the two locking bars (43) in the unlocked state of the push button (1) and during the actuation stroke and during the return stroke are arranged within the guide slots (15) of the push button housing (2), so that the bolt (5) and the lock cylinder core (4 ) are non-rotatable about the actuation axis (8) relative to the actuation button (3) and the push button housing (2).

28. push button (1) according to any one of claims 15 to 27,

characterized in that

the bolt (5) by rotating the lock cylinder core (4) in the unlocking direction (61) relative to the push button housing (2) can be driven such that the locking bars (43) are aligned in the axial direction with the guide slots (15).

29. push button (1) according to any one of the preceding claims,

characterized in that

the push button (1) is designed such that the lock cylinder core

(4) automatically, in particular by spring force, returns from its unlocking position to its starting position.

30. push button (1) according to any one of claims 15 to 29,

characterized in that the push button (1) is designed in such a way that the locking bar strips (43) move out of the actuated into its unactuated position out of the guide slots (15) by moving the actuating button (3).

31. push button (1) according to claim 30,

characterized in that

the push button (1) is designed in such a way that the bolt (5) and the lock cylinder core (4) automatically move against the unlocking direction (61) after the bolt locking bars (43) have been moved out of the guide slots (15), in particular driven by spring force. Drive back to their starting position, in which the operating button (3) is locked.

32. Door, hood, cover or flap, in particular of an agricultural vehicle, e.g. a tractor, or a construction machine, having a lock (50), in particular a rotary latch lock, and a push button (1) for unlocking the lock (50),

characterized in that

the push button (1) is formed according to one of the preceding claims.