Bolt and strike plate system and opening and closing device comprising such a system.

Abstract

Bolt and strike plate system for opening and closing a truck or semi-trailer body door, the system comprising a bolt (P) and a strike plate (G), said door being configured to move from an open position to a closed position by hinge of the door, said opening and closing device (configured to move from a locked state where the bolt engages and locks in the strike plate (G) to an unlocked state (EDV) by pivoting the control bar, allowing a clearance between the bolt and the strike plate of an extraction distance (DE) greater than 75 mm. (See abstract figure: Figure 7)

Description

Title of the invention: Bolt and strike system and opening and closing device comprising such a system.

[0001] This disclosure relates to a bolt and strike system for a truck or semi-trailer door locking and unlocking device, as well as a locking and unlocking device comprising such a system.

[0002] The bolt and strike plate system, as well as the opening and closing device, find particular application in ensuring the locking of doors equipped with elastomeric seals, especially large ones, providing a seal between the frame and the door(s), and such as may be found in the bodies of refrigerated trucks or semi-trailers. Technical field

[0003] This disclosure falls within the field of locking and opening devices for trucks or semi-trailers, commonly referred to as "cremone" by those in the trade. Previous technique

[0004] A device for opening and closing a truck or semi-trailer door is known, in particular from document FR2906828 of the present Applicant.

[0005] Truck doors, or semi-trailers, generally comprise two swing doors, right and left, respectively hinged to two uprights of the frame, and along two substantially vertical pivot axes.

[0006] Each door includes an opening and closing device comprising a control bar, pivotally articulated on the outer side of the door by bearings, and an operating member, typically comprising an operating lever fixed to the control bar for rotation, which drives the control bar through an angular travel of approximately a quarter turn or more to unlock or lock the door. The operating member is further configured to ensure locking by preventing the rotating operating member from rotating in a closed position of the device.

[0007] The opening and closing device further includes bolt and strike plate systems, forming upper and lower locks on the door, typically, for each door: - a top lock comprising a top strike plate, integral with a top rail of the frame, the strike plate configured to engage in a locked state with a bolt, upper and integral with the top end of the control bar, - a lower lock comprising a lower strike plate, integral with a lower crossbar, the strike plate configured to engage in a locked state with a lower bolt from the lower end of the control bar.

[0008] Starting from the unlocked state in which the lower and upper bolts are engaged and locked in the respective strikes, an operator opens the door by grasping said operating member, unlocking its rotation, and then causing the bar to rotate so as to simultaneously extract the bolts from the strikes.

[0009] Documents US3549185 A, US4235463 A, EP0270839 Al represent various realizations of locks comprising a bolt and strike system including the aforementioned operation.

[0010] According to the Applicant's findings, and in particular for refrigerated semi-trailer doors, even in the unlocked state in which the bolts are extracted from the strikes, opening by the operator still requires pulling on the door in order to release the sealing gaskets between the door frame and the door leaf.

[0011] This traction operation can be tedious for the operator, particularly when there are large elastomer seals in thickness, above 70mm depending on the thickness, such as for example 80 mm or even 90 mm, which offer good sealing performance, but generate significant friction between the opening and the frame when the door is opened.

[0012] In the presence of such large-dimension seals, once the bolts and latches have been unlocked, the operator must still pull hard on the door so that the edges of the door are freed from friction, and the seals escape. Summary

[0013] This disclosure improves the situation.

[0014] A bolt and strike plate system is proposed for an opening and closing device for a truck or semi-trailer body door, the system comprising a bolt and a strike plate, said door being configured to move from an open position to a closed position, by articulation of the door, typically on a vertical pivot to a jamb of a frame, the strike plate intended to be fixed to the door frame, typically to an upper or lower rail of the door frame, and the bolt intended to be mounted integrally to one end of a control bar of the opening and closing device, said control bar being tubular, pivotally mounted on the door, by means of bearings, said opening and closing device configured to move from a locked state for which the bolt comes into the engaged and locked position in the strike plate to an unlocked state,by pivoting the control bar, allowing an escape between the bolt and the strike plate - the bolt comprising: , — a male part configured to be fitted into a recess in the control bar, at an opening in the control bar, said male part extending along an axis A, intended to be coaxial with the control bar, — an engagement part configured to engage and lock into position in said strike plate extending lengthwise along an axis B, transverse to axis A, from a proximal end integral with the male part at which at least one locking cavity is provided, to a distal end comprising at least one hooking portion, - the strike plate comprising a body extending lengthwise having, on one side, a flat fixing surface configured to bear against the door frame, and having on a second side, in relief, offset along the length of the strike plate: — a hooking element, configured to be hooked by the distal end of the bolt engagement part, — at least one locking projection configured to penetrate said at least one locking cavity.

[0015] Said bolt is configured during a pivoting to lock around the axis A, from the unlocked state to successively ensure an engagement of the hooking member by said at least one hooking portion and then a pull on the strike until said at least one locking projection engages in said at least one cavity in said locked state. In the locked state, the engagement part of the bolt extends along the axis B, substantially parallel to the longitudinal axis of the strike plate, said at least one bolt attachment part attached to said attachment member in order to ensure locking of the bolt relative to the strike plate along axis B, said at least one locking projection engaging in said at least one cavity of the bolt so as to ensure locking of the bolt relative to the strike plate along axis A of the bolt.

[0016] The bolt and strike plate system is configured during a pivoting motion of the bolt around axis A from the locked state to the unlocked state to cause successively, during the pivoting motion of the bolt around axis A: - a detachment between said at least one portion of the engagement of the distal end of the bolt and the engagement mechanism of the strike plate, - a contact at the distal end of the bolt and at least one guide surface of the strike plate extending lengthwise along the body of the strike plate, from a base of the locking member, and towards said at least one locking projection, - a push of the bolt on the strike plate by the distal end of the bolt sliding on the guide surface, until the axis B of the bolt's engagement portion is substantially perpendicular to the fixing surface in a bolt extraction position.

[0017] According to the present disclosure, the extraction distance separating the axis A and the fixing surface of the strike plate in said extraction position, at the end of the push, is greater than or equal to 75mm, preferably greater than 80mm, for example between 80mm and 110mm, such as 87mm or 97mm.

[0018] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0019] - In the locked state where the bolt is engaged in the strike plate, the The locking distance separating axis A and the fixing surface can be between 20mm and 32mm, such as 26.5mm.

[0020] - The bolt and strike plate system can be configured during pivoting and unlocking of the control bar, from the locked state to the unlocked state in the bolt extraction position, to move the bolt axis A away from the fixing surface by a projected stroke in a direction perpendicular to the fixing surface greater than 50 mm, preferably greater than 55 mm, such as 60.5 mm, or even greater than 65 mm or 70.5 mm.

[0021] - The guiding surface along which the distal end of the portion slides The engagement of the bolt during pivoting and unlocking forms a ramp relative to the fixing surface, increasing in the direction of the hooking member towards said at least projection, and in which the distal end is configured to travel upwards along the ramp during pivoting and unlocking.

[0022] - A summit of the guide surface ramp at which the end distal is likely to press at said extraction position, perhaps at a distance from the fixing surface (between 15 mm and 23 mm such as 19 mm, and in which the height of the ramp along the direction perpendicular to the fixing surface (43) is between 6 mm and 15 mm.- The top of the ramp may form a male projection received in a female part of the bolt in the locked state.

[0023] - The distance separating axis A from the distal end of the engagement part of the bolt is between 54.5 mm and 90 mm, such as 68 mm or 78 mm.

[0024] - Said distal end may include a fork, and said at least one The attachment portion may comprise a first attachment portion and a second attachment portion, spaced apart along axis A, respectively arranged at the terminal ends of a first and a second branch of the fork, and wherein said attachment member is a T-shaped part comprising a vertical wing of the T-shaped part, extending in a direction perpendicular to a surface plane. a fixing bracket and a horizontal wing of the T-shaped part, said vertical wing projecting from the body of the strike plate and said horizontal wing oriented in a direction transverse to the longitudinal axis of the strike plate and wherein during a transition from the unlocked state to the locked state, the first and second arms of the fork are configured to come on either side of the vertical wing of the T-part, the first and second hooking portions configured to hook an inner edge of the horizontal wing of the T-part, on either side of the vertical wing of the T-part.

[0025] - The guiding surface may comprise a first guiding surface, and a second guide surface extending parallel along the length of the strike plate body, on either side of said vertical wing of the T-shaped part, and wherein - the first guide surface is configured to cooperate in sliding with the terminal end of the first fork arm, and - the second guide surface is configured to cooperate in sliding with the terminal end of the second branch of the fork.

[0026] - Said at least one cavity may include a through cavity of contour closed, arranged intermediate on the engagement portion, between axis A and said at least one hook portion, and in which the strike plate includes a projection (configured to engage the through cavity in the locked state, said projection having: - a first guide slope, configured to engage with a first lateral edge of the through cavity to push the bolt back against the strike plate in a first direction along the axis A, - a second guide slope, diametrically opposite with respect to the longitudinal axis of the strike plate, configured to engage with a second lateral edge of the through cavity to push the bolt away from the strike plate in a first direction along the direction of axis A.

[0027] - The system may include a reinforcing rib extending along the direction of the longitudinal axis of the strike plate between the base of the vertical wing of the T and a base of said projection and in which the engagement portion of the bolt includes a groove, extending along the axis B of the engagement portion 3, housing the reinforcing rib in the locked state.

[0028] - Said at least one cavity may include a V-profile end cavity, opening at the proximal end, on the side of axis A opposite to the distal end of the bolt engagement portion, and in which the strike plate includes a triangular projection comprising two V-shaped stop surfaces consisting of a first a buttress surface and a second buttress surface configured to cooperate with the two walls of the V-shaped cavity.

[0029] According to one embodiment, said system may comprise: - said through cavity arranged intermediate on the engagement portion, between axis A and said at least one attachment portion forming a first cavity, configured to engage with the projection which is a first projection - said end cavity opening at the proximal end, on the side of axis A opposite to the distal end of the engagement portion of the bolt forming a second cavity configured to engage with the triangular projection which is a second projection and in which, in the locked state, the bolt is locked relative to the strike plate, by the first projection in the first cavity and by the second projection in the second cavity, on either side of axis A.

[0030] The first projection and the second projection are configured, during a pivoting motion of the bolt around axis A, from the unlocked state to the locked state, to ensure: - an initial centering of the bolt relative to the strike plate along the direction of axis A by the action of the first guide slope on the first lateral edge of the through cavity and / or the second guide slope on the second lateral edge of the through cavity, then successively - a second centering of the bolt relative to the strike plate along the direction of axis A by a work of one of the two V-shaped walls of the triangular projection on one of the two V-shaped walls of the second cavity and / or the work of a second of the two V-shaped walls of the triangular projection on the other of the two V-shaped walls of the second cavity.

[0031] According to one embodiment, said proximal end of engagement portion may comprise a cylindrical portion coaxial with axis A, and in which, in the locked state, the strike plate comprises a semi-cylindrical cavity, partially receiving the cylindrical portion, in particular the semi-cylindrical cavity arranged between the first projection and the second projection.

[0032] According to one embodiment, the ramp of the guide surface, increasing in the direction of the latching member, relative to the fixing surface, towards said at least projection, extends to a summit formed by a plate, substantially parallel to the fixing surface (of said strike plate), a plate against which the distal end of the engagement part abuts in said unlocked state. The plate may extend along the length of the strike plate between the first projection (41) and the second projection.

[0033] According to one embodiment, said proximal end of said engagement portion of the bolt may comprise a tapered portion of thickness Ep2, less than the thickness Epi of a median portion of the engagement portion between said end distal and said proximal end, the tapered part configured to come opposite the plate in the locked state.

[0034] According to one embodiment, the bolt and the strike plate are forged metal parts.

[0035] According to one embodiment: - the bolt has a plane of symmetry passing through the axis A of the male part, and through the longitudinal axis B of the engagement part, - the strike plate has a plane of symmetry passing through the longitudinal axis of said strike plate.

[0036] According to a second aspect, the truck or semi-trailer door opening and closing device comprises at least one door hinged on a pivot to a jamb of a frame, the device comprising a control bar hinged on a pivot to the door by bearings, and at least one bolt and latch system according to this disclosure, the bolt being fixed to one end of the control bar, and the strike plate fixed by its mounting surface to an upper or lower cross member of the door frame. and in which the bolt and strike plate system is configured during a pivoting motion of the bolt around axis A from the locked state to said unlocked state to cause successively, during the pivoting motion of the bolt around axis A: - a detachment between said at least one portion of the engagement of the distal end of the bolt and the engagement mechanism of the strike plate, - a contact between the distal end of the bolt and at least one guide surface of the strike plate extending lengthwise along the body of the strike plate, from a base of the locking member, and towards said at least one locking projection, - a push of the bolt on the strike plate by the distal end of the bolt sliding on the guide surface, and until the axis B of the engagement portion of the bolt is substantially perpendicular to the fixing surface in an extraction position, and in which the extraction distance separating the axis A and the fixing surface of the strike plate in said extraction position, at the end of the push, is greater than or also than 75mm, preferably greater than 80 mm, for example between 80mm and 110mm such as 87mm or 97mm, and preferably according to a displacement of the axis A of a projected stroke along a direction perpendicular to the fixing surface greater than 50 mm, preferably greater than 55 mm, such as 60.5mm, or even greater than 65mm such as 70.5mm.This disclosure further relates to the use of the opening and closing device as described in this disclosure for a refrigerated semi-trailer or refrigerated truck door including seals between the frame and the door, said bolt extraction position. configured to ensure door movement at opening along axis A, allowing the sealing gaskets to escape. Brief description of the drawings

[0037] Other features, details and advantages will become apparent from reading the detailed description below and from analyzing the accompanying drawings, in which: Fig. 1

[0038] [Fig.1] is a perspective view of a bolt and strike plate system according to the present disclosure, according to a first embodiment, in the locked state in which the bolt is engaged and locked in the strike plate, the bolt comprising a male portion extending along an axis A, configured to be fitted and fixed typically by welding to a control bar and an engagement portion extending along an axis B. Fig. 2

[0039] [Fig.2] is a view of the system in the locked state according to [Fig.1], viewed along axis A. Fig. 3

[0040] [Fig.3] is a view of the system in the locked state according to [Fig.1], front view. Fig. 4

[0041] [Fig.4] is a successive view of [Fig.2] when the bolt initiates a pivoting at the unlocking, causing the distal end of the bolt to disengage from the strike plate's hooking member, then the distal end to butt against a guide surface of the bolt, at the base of the hooking member. Fig. 5

[0042] [Fig.5] is a successive view of [Fig.4] during pivoting to unlocking, the distal end of the bolt sliding on the guide surface continuing the push and the spreading of the axis A. Fig. 6

[0043] [Fig.6] is a successive view of [Fig.5] during pivoting to unlocking, the distal end of the bolt sliding on an upward ramp of the guide surface continuing the thrust and the spreading of the axis A Fig. 7

[0044] [Fig.7] is a successive view of [Fig.6] during pivoting to unlock, the distal end of the bolt in contact with the top of the rising ramp of the guide surface illustrating the extraction position for which the axis B of the bolt is perpendicular to the fixing surface of the strike plate, namely the position for which axis A is furthest from the strike plate fixing surface during pivoting for unlocking. Fig. 8

[0045] [Fig-8] is a view of the bolt and strike plate system during a pivoting motion to lock the bolt, before hooking the distal end of the bolt with the T-shaped hooking member of the strike plate. Fig. 9

[0046] [Fig.9] is a front view of the bolt illustrating in particular the distal end of the bolt, which has a fork, with a first arm ending in a first hook portion and a second arm ending in a second hook portion, illustrating in particular the entry of the fork, having opposing guide surfaces between the two arms of the fork, converging in the direction of insertion, with a centering function, the converging guide surfaces, followed respectively by straight guide surfaces, between which the vertical wing of the T-shaped part of the hook member is housed, in said locking state. Fig. 10

[0047] [Fig. 10] is a cross-sectional view passing through the projection which is housed in the first cavity, when closing, [Fig. 10] being successive to [Fig. 9], the distal end of the bolt having caught the catch member of the strike plate, the first projection of the strike plate having a first guide slope configured to ensure a (first) centering of the bolt with respect to the strike plate along the direction of axis A in a first direction, and a second guide slope configured to ensure a (first) centering of the bolt with respect to the strike plate along the direction of axis A in a second direction, opposite to the first direction. Fig. 11

[0048] [Fig. 11] is a successive view to [Fig. 10], in order to lock during which the second triangular guide projection and the second cavity ensure a second centering, in a first direction along the direction of the axis A by a first pair of facing walls belonging respectively to the second triangular projection and the V-shaped cavity or in a second direction along the direction of the axis A by a second pair of facing walls belonging respectively to the second triangular projection and the V-shaped cavity. Fig. 12

[0049] [Fig. 12] is a schematic rear view of a semi-trailer body, which has a loading opening closed by two hinged doors, right and left, respectively mounted by hinges (not shown) on two posts of the door frame, each of the doors having an opening and closing device comprising, for each door (right or left): - a control bar, mounted pivotally on the door by bearings, along a pivot axis parallel to the vertical axis of the door hinges, comprising a control handle for its rotation, - a lower bolt and strike plate system, comprising a strike plate mounted on the lower rail of the frame, and a bolt mounted rotationally fixed to the lower end of the control bar, and, - a bolt and strike plate system, upper, comprising a strike plate mounted on the upper rail of the frame, and a bolt mounted in rotation fixed to the upper end of the control bar. Fig. 13

[0050] [Fig. 13] is a perspective view of a bolt and strike plate system according to the present disclosure, according to a second embodiment, in the locked state in which the bolt is engaged and locked in the strike plate, the bolt comprising a male portion extending along an axis A, configured to be fitted and fixed to a control bar and an engagement portion extending along an axis B. Fig. 14

[0051] [Fig. 14] is a view of the system according to [Fig. 13] in the locked state, viewed along axis A. Fig. 15

[0052] [Fig. 15] is a perspective view of the system according to [Fig. 13] in the unlocked state Fig. 16

[0053] [Fig. 16] is a perspective view of the system according to [Fig. 13] in the unlocked state Description of the implementation methods

[0054] This disclosure relates to a bolt and strike plate system for an opening and closing device 1 of a truck or semi-trailer door, the system comprising a bolt P and a strike plate G, said door PT being configured to move from an open position to a closed position by articulation of the door PT, typically on a vertical pivot to a jamb M of a frame DM, the strike plate intended to be fixed to the frame DM of the door, typically to an upper rail TS or a lower rail TI of the door frame, and the bolt intended to be mounted integrally to one end of a tubular control bar BC of the opening and closing device. The control bar is pivotally mounted on the door, typically via bearings PL.

[0055] The opening and closing device 1 is configured to go from a locking state EV for which the bolt P (lower or upper) comes into the engagement and locking position in the strike plate to an unlocking state EDV, by pivoting the control bar, allowing an escape between the bolt and the strike plate.

[0056] Generally, and as illustrated in [Fig.12], the semi-trailer body or truck body has a rear opening delimited by an opening frame which has a frame comprising two vertical uprights M, and two cross members, including an upper cross member TS, and a lower cross member TI.

[0057] Two hinged doors are configured to close the opening, the left door, closing the left half of the opening, is hinged to the left upright of the frame, while the right door closes the right half of the opening, is hinged to the right upright of the frame.

[0058] Each of the doors is equipped with the closing and opening device which includes the control bar BC, extending along the height of the door, articulated to the outer surface of the door by the bearings, and operable by an operating member fixed in rotation to the control bar, and typically foldable into a locking position against the door.

[0059] The lower and upper bolts are thus rotationally fixed to the control bar, and are configured to engage in locking respectively in strikes G, lower and upper, respectively of the upper rail TS and the lower rail TI of the frame.

[0060] Also and generally, said opening and closing device 1 is configured to go from the locking state EV for which the bolt P comes into the engagement and locking position in the strike plate to an unlocking state EDV, by pivoting the control bar, allowing an escape between the bolt and the strike plate.

[0061] Generally, and as illustrated in [Fig. 1], the bolt (or each bolt) P comprises: — a male part 2 configured to be fitted into the recess of the control bar BC, at an opening of the control bar, said male part extending along an axis A, intended to be coaxial with the control bar, — an engagement part 3 configured to engage and lock into position in said strike plate, said engagement part 3 extending lengthwise along an axis B, transverse to the axis A, from a proximal end EP integral with the male part at which at least one locking cavity Cav 1, Cav 2 is provided and to a distal end ED comprising at least one hooking portion 30.

[0062] The male part 2 may be substantially cylindrical, or even slightly conical, to be inserted into the tubular end of the control bar.

[0063] The male part 2 can be followed by a collar CL forming a stop for the edge of the control bar. The connection between the control bar and the bolt can be ensured by welding, for example between the collar and the control bar, and / or by mounting a ring that clamps the tubular portion of the control bar around the male part 2.

[0064] The engagement part 3 extends transversely along the axis B which is perpendicular to the axis A from said proximal end EP, close to the axis A, to the distal end EP further away from the axis A.

[0065] The engagement part 3 and the male part 2 can form an L.

[0066] The bolt P, including the male part 2 and the engagement part 3, can be a A one-piece metal component. The bolt is preferably forged, in order to increase its strength.

[0067] Generally, and as illustrated in particular in the figures, the strike plate G comprises a body 4 extending lengthwise having, on one side, a flat fixing surface 43, configured to bear against the door frame, in particular against a vertical surface of the upper rail TS or the lower rail TI, and having, on a second side, in relief, and offset along the length of the strike plate: — a hooking member 40, configured to be hooked by the distal end EP of the engagement part 3 of the bolt, — at least one locking projection 41, 42 configured to penetrate said at least one locking cavity Cav 1, Cav2.

[0068] The strike plate may also include OM mounting holes, in particular at the two longitudinal ends of the body, configured for the passage of fixing elements, such as the fixing bolts ensuring the fixing of the strike plate to the frame.

[0069] The body 4 of the strike plate G can be a single piece of metal. The strike plate is preferably forged to increase its strength. However, other manufacturing methods are possible, for example: - casting, - additive manufacturing, such as 3D printing, or even - manufacturing by material removal, such as machining.

[0070] In general: - the bolt may have a plane of symmetry passing through axis A of the male part 2, and axis B, longitudinal to the engagement part 3, and / or - the strike plate may include a plane of symmetry passing through the longitudinal axis of said strike plate.

[0071] The bolt symmetry plane allows the use of a single bolt reference which can serve indifferently as upper or lower bolt and regardless of the direction of opening of the door (right or left).

[0072] The symmetry plane of the strike plate allows the use of a single strike plate reference which can serve indifferently as upper or lower strike plate, regardless of the direction of opening of the door, right or left.

[0073] Generally, and as illustrated in figures 8, 9 and 11, said bolt P is configured during a pivoting at the locking RV around the axis A, from the unlocked state EDV to successively ensure an engagement of the hooking member 40 of the strike plate by said at least one hooking portion 30, and consequently a pull on the strike plate until said at least one locking projection 41, 42 engages in said at least one cavity Cav1, Cav2 in said locking state EV.

[0074] In the EV locking state, in particular illustrated in figures 1 and 2, the engagement part of the bolt P extends along the axis B, substantially parallel to the longitudinal axis of the strike plate G, said at least a hooking portion 30 of the bolt hooked to said hooking member 40 in order to ensure a locking of the bolt relative to the strike plate along the axis B, said at least a locking projection 41, 42 engaging in said at least a cavity of the bolt Cav1, Cav2 so as to ensure a locking of the bolt P relative to the strike plate GT along the axis A of the bolt.

[0075] Generally, the bolt and strike plate system is configured during a pivoting motion RD of the bolt around axis A until said unlocking state EDV comprises successively, during the pivoting motion RD of the bolt around axis A: - a detachment between said at least one hooking part 30 of the distal end of the bolt and the hooking element 40 of the strike plate, - a contact at the distal end ED of the bolt and at least one guiding surface SG of the strike plate extending over the body 4 of the strike plate, lengthwise over the strike plate body, from a base of the hooking member 30, and in the direction of said at least one locking projection 41, 42, - a push of the bolt P on the strike plate by the distal end of the bolt sliding on the guide surface, and until the axis B of the engagement portion 3 of the bolt is substantially perpendicular to the fixing surface 43 in a bolt extraction position.

[0076] According to the present disclosure, the extraction distance DE separating the axis A and the fixing surface 43 of the strike plate in said extraction position, at the end of the push, is greater than or equal to 75mm, preferably greater than 80 mm, for example between 80 mm and 115 mm, such as 87mm, in particular according to the embodiment of [Fig.7], or 97mm according to the embodiment of [Fig. 16].

[0077] The extraction distance DE greater than or equal to 75mm is greater than the Applicant's known condition, and ensures better door detachment. This allows in particular to the door extracted by the pushing action of the bolt P on the strike plate G to release the sealing gaskets, totally or at least largely, greatly facilitating the opening of doors having sealing gaskets, in particular wide sealing gaskets, for example greater than 80 mm along the thickness direction of the door, such as for example 90 mm.

[0078] According to one embodiment, and in the locking state EV for which the bolt P is engaged in the strike plate G, the locking distance separating the axis A and the fixing surface 43 can be between 20mm and 32mm, such as 26.5mm.

[0079] Preferably, the bolt and strike plate system is configured, during the pivoting and unlocking of the control bar, from the locked state EV to the unlocked state EDV in the bolt's extraction position, to move the bolt axis A away from the fixing surface 43 by a projected stroke in a direction perpendicular to the fixing surface 43 greater than 45 mm, in particular 50 mm, and in particular preferably a projected stroke greater than 55 mm, such as 60.5 mm for the first mode of [Fig. 7], or even greater than 65 mm, such as 70.5 mm for the second mode of [Fig. 16]. Such a displacement stroke is suitable for ensuring clearance of the seals and for significantly reducing friction opposing the opening of the door.

[0080] According to one embodiment, the guide surface GD along which the distal end EP of the engagement portion P of the bolt slides during pivoting to unlocking RD, can form a ramp relative to the fixing surface 43, increasing in the direction of the hook member towards said at least projection 41, 42, the distal end ED configured to travel upwards along the ramp during pivoting to unlocking RD, and as illustrated in Figures 5 to 7. The ascending profile of the ramp, which is followed by the distal end during pivoting to unlocking RD, amplifies the extraction.

[0081] Thus, the said displacement stroke of the axis A, from the locked state to the unlocked state, projected along the direction perpendicular to the axis A, is due in part in itself by the rotation of the bolt, as well as by the action of the ramp which tends to move the axis A away during the rotation of the bolt.

[0082] According to one embodiment, the apex of the guide surface SG ramp, against which the distal end is likely to bear in said extraction position, is at a distance DS from the fixation surface 43 of between 15 mm and 23 mm, such as 19 mm. The height of the ramp in the direction perpendicular to the fixation surface 43 may be between 8 mm and 15 mm, such as 12 mm.

[0083] Generally, and as can be seen by way of example in [Fig.3] [Fig.15], the top of the ramp can form a male projection received in a female part of the bolt in the EV locking state.

[0084] Generally, the distance DEP separating the axis A from the distal end ED of the engagement part of the bolt is between 54.5 mm and 90 mm such as 68 mm according to the first embodiment illustrated, or 78 mm for the second embodiment illustrated.

[0085] In general, it is noted that the extraction distance DE separating the axis A and the fixation surface 43 is the sum of the distance DS separating the top of the ramp from said extraction surface and the distance DEP separating the axis A and the distal end ED, and as illustrated in [Fig.7].

[0086] For example, by way of non-limiting example, and in particular according to the first embodiment of figures 1 to 11, the distances can be: - the distance DS is equal to 19 mm, - the distance DEP is equal to 68 mm, - the extraction distance DE is equal to 87 mm.

[0087] For example, by way of non-limiting example, and in particular according to the second embodiment of Figures 13 to 17, the distances may be: - the distance DS is equal to 19 mm, - The DEP distance is equal to 78mm, - the extraction distance DE is equal to 97mm.

[0088] According to one embodiment, in said distal end ED of the bolt P includes a fork, and said at least one hook portion 30 includes a first hook portion 30a and a second hook portion 30b, spaced apart along axis A, respectively arranged respectively at the terminal ends of a first branch and a second branch of the fork.

[0089] Said latching member 40 is a T-shaped part comprising a wing vertical of the T-shaped part, extending in a direction perpendicular to a fixing surface plane 43 and a horizontal wing of the T-shaped part, said vertical wing projecting from the body 4 of the strike plate and said horizontal wing oriented in a direction transverse to the longitudinal axis of the strike plate.

[0090] During a transition from the unlocked state EDV to the locked state EV, the first branch BRI and the second branch BR3 of the fork are configured to come on either side of the vertical wing of the T-part, and as illustrated by way of example in [Fig.8], the first hook portion 30a and the second hook portion 30b are configured to simultaneously hook a lower edge BI of the horizontal wing of the T-part, on either side of the vertical wing of the T-part.

[0091] Generally, and as illustrated in [Fig.9]; the fork may have, from the terminal ends of the branches BRI, BR2, converging guide walls PGC ensuring centering of the bolt relative to the strike plate along the axis direction A, by cooperation with the vertical wing of the latching member 30 when the two arms BRI and BR2 are inserted on either side of the vertical wing. The converging guide walls PGC of the two arms BRI, BR2 can extend in the direction of the axis A of the bolt by means of straight guide walls PGR, parallel to each other, ensuring guidance of said vertical wing of the latching member 30 in the locked state EV.

[0092] The guide surface SG can then comprise a first guide surface, and a second guide surface extending in parallel along the length of the strike plate body, on either side of said vertical wing of the T-shaped part: - the first guide surface is configured to cooperate in sliding with the terminal end of the first BRI arm of the fork, and - the second guide surface is configured to cooperate in sliding with the terminal end of the second branch BR2 of the fork.

[0093] The first guide surface and the second guide surface extend in parallel along the length of the strike plate to form said ramp.

[0094] According to one embodiment, said at least one cavity Cav 1, Cav 2 comprises a through cavity Cav 1, preferably of closed contour, arranged intermediate on the engagement portion, between the axis A and said at least one hooking portion 30 along the axis B.

[0095] The strike plate includes a locking projection 41 configured to engage the through cavity in the locked state EV, said projection 41 having, in particular as illustrated in [Fig. 10]: - a first guide slope 41a, configured to engage with a first lateral edge of the through cavity Cavl to push the bolt back against the strike plate in a first direction along the axis A, - a second guide slope 41b, diametrically opposite with respect to the longitudinal axis of the strike plate, configured to engage with a second lateral edge of the through cavity Cavl to push the bolt away from the strike plate in a first direction along the direction of axis A.

[0096] It is noted that said intermediate cavity Cavl is arranged, along the axis B of the engagement portion 3 at a distance from the fork, separated by a median portion of the bolt;

[0097] According to one embodiment, and in particular as illustrated in Figures 8 and 9, the system may include a reinforcing rib NR extending along the direction of the longitudinal axis of the strike plate between the base of the vertical wing of the T of the hooking member 30 and a base of said projection 4L The engagement portion 3 of the bolt (in particular, its median portion between said fork and said through cavity cavl) may include a groove RA extending along axis B, housing the reinforcing rib NR in the locking state EV.

[0098] According to one embodiment, said at least one cavity Cav 1, Cav2 may include a V-profile end cavity, opening at the proximal end, on the side of axis A opposite to the distal end ED of the engagement portion 3 of the bolt.

[0099] The strike plate then includes a triangular projection 42 comprising two V-shaped stop surfaces, which consist of a first stop surface 42a and a second stop surface 42b, inclined relative to each other on either side of the longitudinal axis of the strike plate and configured to cooperate respectively with the two corresponding walls of the V-shaped Cav 2 cavity.

[0100] According to one embodiment, said system may comprise: - said intermediate through cavity arranged on the engagement portion, between the axis A and said at least one hook portion 30 forming a first Cavl cavity, configured to engage with the projection 41 which is a first projection - said end cavity opening at the proximal end, on the side of the axis A opposite to the distal end ED of the engagement portion 3d u bolt forming a second Cav2 cavity configured to engage with the triangular projection 42 which is a second projection.

[0101] In the EV locking state, the bolt P is locked relative to the strike plate by the first projection 41 housed in the first cavity Cavl and by the second projection 42 housed in the second cavity Cav2, on either side of the axis A.

[0102] According to an advantageous embodiment, the first projection 41 and the second projection 42 are configured, during a pivoting of the bolt around the axis A when locked RV, from the unlocked state EDV to the locked state EV, to ensure: - a first centering of the bolt P relative to the strike plate G along the direction of the axis A by the action of the first guide slope 41a on the first lateral edge of the through cavity Cavl and / or the second guide slope 42b on the second lateral edge of the through cavity Cv2 and then successively - a second centering of the bolt P relative to the strike plate G along the direction of the axis A by a work of one of the two V walls of the triangular projection 42 on one of the two V walls of the second cavity V2 and / or the work of a second of the two V walls of the triangular projection on the other of the two V walls of the second cavity V2.

[0103] According to the first embodiment, said proximal end EP of the engagement portion may comprise a cylindrical portion coaxial with axis A. In the locked state EV, the strike plate then comprises a semi-cylindrical cavity, partially receiving the cylindrical portion, in particular the arranged semi-cylindrical cavity between the first projection 41 and the second projection 42, and as seen in [Fig.2]. While this feature improves locking, the semi-cylindrical cavity may be a hindrance during locking operations.

[0104] Thus, when the operator closes the door, there is a possibility that the distal end ED of the bolt may engage not against the guide surface SG, but become lodged in the cylindrical cavity. In such a case, the distal end of the bolt is trapped in the cylindrical cavity, preventing rotation at the locking position RV of the bolt, unless the operator first retracts the door. The second embodiment shown in Figures 13 to 17 improves this situation.

[0105] According to this second embodiment, the ramp of the guide surface, increasing in the direction of the latching member relative to the fixing surface towards said at least projection, extends to a summit formed by a plate PLT. This plate is substantially parallel to the fixing surface 43 of said strike plate, and the distal end ED of the engagement part 3 abuts against this plate in said unlocked state EDV. Substantially parallel means that the plate is parallel to the fixing surface 43, or even very slightly inclined at an angle of less than 5°, such as 2°, and preferably in the same direction as the slope of the ramp.

[0106] Thus, when the operator closes the door, the distal end ED of the bolt engages either with the guide surface SG or with the plate PLT. When the distal end engages with the plate PLT, in the latter case, a rotation to the locking position RV causes the distal end to slide along the plate, then down the ramp to ensure the engagement of the locking mechanism until the door is unlocked, without having to retract the door.

[0107] In general, the PLT plate can extend along the length of the strike plate between the first projection 41 and the second projection 42.

[0108] Said proximal end EP of said engagement portion 3 of the bolt P may include a tapered portion of thickness Ep2, less than the thickness Epi of a median portion of the engagement portion 3 between said distal end EP and said proximal end ED. The tapered portion is configured to face the plate PLT in the locked state EV, as illustrated in [Fig. 15]. In particular, it is noted that the tapered portion may include at least one flat that can be configured to abut against the plate PLT in the locked state EV.

[0109] It should also be noted that on the side of the fixing surface 43 of the strike plate, a recess can be cut out, at a median position, in two end portions, in order to limit the amount of material used. Such a recess is visible as an example in the second embodiment.

[0110] The present disclosure further relates to a truck or semi-trailer door opening and closing device 1, comprising at least one hinged PT door pivoting on a post M of a frame DM of a truck or semi-trailer body. The device 1 comprises a control bar B pivotally articulated by bearings PL to said door, as well as at least one bolt and latch system according to this disclosure, the bolt P of which is fixed to one end of the control bar BC, and the strike plate G fixed by the fixing surface 43 to a cross member, upper or lower, of the door frame.

[0111] The bolt and strike plate system is configured during a pivoting motion RD of the bolt around axis A from the locked state to the said unlocked state EDV to cause, successively, during the pivoting motion RD of the bolt around axis A: - a detachment between said at least one hooking part 30 of the distal end of the bolt and the hooking element 40 of the strike plate, - a contact at the distal end ED of the bolt and at least one guiding surface SG of the strike plate extending over the body 4 of the strike plate, lengthwise over the strike plate body, from a base of the hook member 40, and in the direction of said at least one locking projection 41, 42, - a push of the bolt P on the strike plate by the distal end of the bolt sliding on the guide surface, and until the axis B of the engagement portion 3 of the bolt is substantially perpendicular to the fixing surface 43 in an extraction position.

[0112] The extraction distance DE separating the axis A and the fixing surface 43 of the strike plate in said extraction position is greater than or also than 75mm, preferably greater than 80mm, for example between 80mm and 110mm such as 87mm or 97mm, and preferably along a stroke of the axis A, and preferably along a displacement of the axis A of a projected stroke along a direction perpendicular to the fixing surface 43 greater than 50mm, preferably greater than 55mm, such as 60.5mm between the locking state EV and the unlocking state EDV, or even greater than 65mm such as 70.5mm. Industrial application

[0113] The present disclosure further relates to the use of the opening and closing device according to the present disclosure for a refrigerated semi-trailer or refrigerated truck body door comprising sealing gaskets between the frame and the door, said bolt extraction position configured to ensure a movement of the door at opening at the level of axis A, allowing escape of the sealing gaskets in full or at least partially. List of reference signs

[0114] - 1: Opening and closing device, - P. Pêne, - 2. Male part, - A. Axis of the male part - 3. Commitment section, - B. Axis of the engagement part - EP. Proximal extremity, - ED. Distal extremity, - 30. Hook portion, - 30a, 30b. First and second section of the hold - Cavity 1, Cavity 2. Cavities (locking) - G. Gâche, - 4 Body (tack) - 40. Hooking element (intended to be hooked by the hooking part of the bolt) - 41, 42 Locking projections (designed to penetrate the locking cavities of the bolt, - 41a, 41b first guide slope and second guide slope - 43. Fixing surface, - BC. Control bar, - PL. Landings - PT. Door, - DM. Dormant, - Mr. Montant, - TS. Upper crossbar, - TI. Lower crossbar, - RD. Pivoting at unlocking ([Fig.4]), - OF. Extraction distance (separating axis A from the fixing surface 43), - DS. Distance separating the top of the ramp from the fixing surface 43 - DEP. Distance separating the distal end of the bolt from axis A, - BRI, BR2. First branch and second branch (fork), - PGC. Converging guide walls, - PGR. Straight guide walls - EV. Locking state, - EDV. Unlocked status.

Claims

1. Demands Bolt and strike plate system for an opening and closing device (1) of a truck or semi-trailer body door, the system comprising a bolt (P) and a strike plate (G), said door (PT) being configured to move from an open position to a closed position, by articulation of the door (PT), typically on a vertical pivot to a jamb (M) of a frame, the strike plate intended to be fixed to the frame (DM) of the door, typically to an upper rail (TS) or a lower rail (TI) of the door frame, and the bolt (P) intended to be mounted integrally to one end of a control bar (BC), of the opening and closing device, said control bar being tubular, pivotally mounted on the door, by means of bearings (PL),said opening and closing device (1) configured to move from a locked state (EV) in which the bolt (P) comes into the engaged and locked position in the strike plate (G) to an unlocked state (EDV), by pivoting the control bar, allowing an escape between the bolt and the strike plate - the bolt (P) comprising:, — a male part (2) configured to be fitted into a recess in the control bar (BC), at an opening in the control bar, said male part extending along an axis A, intended to be coaxial with the control bar, — an engagement part (3) configured to engage and lock into position in said strike plate extending lengthwise along an axis B, transverse to axis A, from a proximal end (EP) integral with the male part at which at least one locking cavity (Cav 1, Cav 2) is provided and to a distal end (ED) comprising at least one hooking portion (30), - the strike plate (G) comprising a body (4) extending lengthwise having, on one side, a flat fixing surface (43), configured to bear against the door frame, and having on a second side raised, offset along the length of the strike plate: — a latching member (40), configured to be latched by the distal end (ED) of the bolt engagement portion, — at least one locking projection (41, 42) configured to penetrate said at least one locking cavity (Cav 1, Cav2), said bolt being configured during a pivoting at locking around the axis A, from the unlocked state (EDV) to successively ensure an engagement of the hooking member (30) by said at least one hooking portion (40) then a pull on the strike plate until said at least one locking projection (41, 42) comes to engage in said at least one cavity (Cav1, Cav2) in said locked state (EV) and wherein, in the locked state (EV), the engagement portion of the bolt (P) extends along axis B, substantially parallel to the longitudinal axis of the strike plate (G), said at least one latching portion (30) of the bolt being attached to said latching member (40) in order to ensure locking of the bolt relative to the strike plate along axis B, said at least one locking projection (41, 42) engaging in said at least one cavity of the bolt (Cav1, Cav2) so as to ensure locking of the bolt relative to the strike plate along axis A of the bolt and in which the bolt and strike plate system is configured during a pivoting motion (RD) of the bolt around axis A from the locked state (EV) to said unlocked state (EDV) to cause successively, during the pivoting motion (RD) of the bolt around axis A: - a detachment between said at least one engagement portion (40) of the distal end of the bolt and the engagement member (30) of the strike plate, - a contact at the distal end (ED) of the bolt and at least one guiding surface (SG) of the strike extending over the body (4) of the strike, lengthwise over the strike body, from a base of the hooking member (30), and in the direction of said at least one locking projection (41, 42), - a push of the bolt (P) on the strike plate by the distal end (ED) of the bolt sliding on the guide surface (SG), and until the axis B of the engagement portion (3) of the bolt is substantially perpendicular to the fixing surface (43) in a bolt extraction position. and wherein the extraction distance (DE) separating the axis A and the fixing surface (43) of the strike plate in said extraction position, at the end of the thrust, is greater than or equal to 75mm, preferably greater than 80mm, for example between 80mm and 110mm, such as 87mm or 97mm.

2. Bolt and strike system according to claim 1 wherein in the locked state (EV) for which the bolt (P) is engaged in the strike (G), the locking distance separating the axis A and the fixing surface (43) is between 20mm and 32mm, such as 26.5 mm.

3. Bolt and strike system according to claim 1 or 2, configured, during pivoting to unlock (RD) of the control bar, from the locking state (EV) to the unlocking state (EDV) in the bolt extraction position, to move the axis A of the bolt away from the fixing surface (43) by a projected stroke along a direction perpendicular to the fixing surface (43) greater than 50 mm, preferably greater than 55 mm, such as 60.5 mm, or even greater than 65 mm or 70.5 mm.

4. Bolt and strike plate system according to any one of claims 1 to 3, wherein the guide surface (GD) along which the distal end (EP) of the engagement portion (3) of the bolt slides during pivoting and unlocking (RD) forms a ramp relative to the fixing surface (43), increasing in the direction of the hooking member (40) towards said at least projection (41, 42), and wherein the distal end (ED) is configured to travel upwards along the ramp during pivoting and unlocking (RD).

5. A bolt and strike plate system according to claim 4, wherein a peak of the ramp of the guide surface (SG) against which the distal end is capable of bearing in said extraction position is at a distance (DS) from the fixing surface (43) of between 15 mm and 23 mm such that 19 mm, and wherein the height of the ramp along the direction perpendicular to the fixing surface (43) is between 6 mm and 15 mm

6. Bolt and strike plate system according to claim 5 wherein the top of the ramp forms a male projection received in a female part of the bolt in the locked state (EV),

7. Bolt and strike plate system according to any one of claims 1 to 6, wherein the distance (DEP) separating the axis A from the distal end (ED) of the engagement part of the bolt is between 54.5 mm and 90 mm such as 68 mm or 78 mm.

8. Bolt and strike plate system according to any one of claims 1 to 7, in said distal end (ED) comprises a fork, and said at least one catch portion (30) comprises a first catch portion (30a) and a second catch portion (30b), spaced apart along axis A, respectively arranged at the terminal ends of a first and a second arm of the fork, and in which said catch member (40) is a T-shaped part comprising a vertical wing of the T-shaped part, extending in a direction perpendicular to a fixing surface plane (43) and a horizontal wing of the T-shaped part, said vertical wing projecting from the body (4) of the strike plate and said horizontal wing oriented in a direction transverse to the longitudinal axis of the strike plate and in which, during a transition from the unlocked state (EDV) to the locked state (EV),The first branch (BRI) and the second branch (BR2) of the fork are configured to come on either side of the vertical wing of the T-section, the first attachment portion (30a) and the second attachment portion (30b) are configured to attach to an inner edge of the horizontal wing of the T-section, on either side of the vertical wing of the T-section.

9. Bolt and strike plate system according to claim 6 or 7 in combination with claim 8, wherein the guide surface (SG) comprises a first guide surface, and a second guide surface extending parallel along the length of the strike plate body, on either side of said vertical wing of the T-shaped part, and wherein - the first guide surface is configured to cooperate in sliding with the terminal end of the first arm (BRI) of the fork, and - the second guide surface is configured to cooperate in sliding with the terminal end of the second arm (BR2) of the fork.

10. A bolt and strike plate system according to any one of claims 1 to 9, wherein said at least one cavity (Cav 1, Cav 2) comprises a through cavity (Cav 1) of closed contour, arranged intermediately on the engagement portion, between the axis A and said at least one hook portion (30), and wherein the strike plate comprises a projection (41) configured to engage the through cavity in the locked state (EV), said projection (41) having: - a first guide slope (41a), configured to engage with a first lateral edge of the through cavity (Cavl) to push the bolt away from the strike plate in a first direction along the axis A, - a second guide slope (41b), diametrically opposite with respect to the longitudinal axis of the strike plate, configured to engage with a second lateral edge of the through cavity (Cavl) to push the bolt away from the strike plate in a first direction along the axis A.

11. System according to claim 9 and 10 comprising a reinforcing rib (NR) extending along the direction of the longitudinal axis of the strike plate between the base of the vertical wing of the T and a base of said projection (41) and in which the engagement portion of the bolt comprises a groove (RA), extending along the axis B of the engagement portion 3, housing the reinforcing rib (NR) in the locked state (EV).

12. Bolt and strike plate system according to any one of claims 1 to 11, wherein said at least one cavity (Cav 1, Cav2) comprises a V-profile end cavity, opening at the proximal end, on the side of axis A opposite to the distal end (ED) of the engagement portion (3) of the bolt and wherein the strike plate comprises a triangular projection (42) comprising two V-shaped stop surfaces consisting of a first stop surface (42a) and a second stop surface (42b) configured to cooperate with the two walls of the V-shaped cavity (Cav 2).

13. Bolt and strike plate system according to claims 10 or 11 and 12 comprising: - said through cavity arranged intermediate on the engagement portion, between the axis A and said at least one hook portion (30) forming a first cavity (Cav1), configured to engage with the projection (41) which is a first projection - said end cavity opening at the proximal end, on the side of the axis A opposite to the distal end (ED) of the engagement portion (3) of the bolt forming a second cavity (Cav2) configured to engage with the triangular projection (42) which is a second projection and in which in the locked state (EV), the bolt (P) is locked relative to the strike plate, by the first projection (41) in the first cavity (Cavl) and by the second projection (42) in the second cavity (Cav2), on either side of the axis A.

14. Bolt and strike plate system according to 13 in which the first projection (41) and the second projection (42) are configured, during a pivoting to locking (RV) of the bolt about axis A, from the unlocked state (EDV) to the locked state (EV), to ensure: - a first centering of the bolt (P) relative to the strike plate (G) along the direction of axis A by the action of the first guide slope (41a) on the first lateral edge of the through cavity (Cavl) and / or the second guide slope (42b) on the second lateral edge of the through cavity (Cv2), then successively - a second centering of the bolt (P) relative to the strike plate (G) along the direction of axis A by the action of one of the two V-shaped walls of the triangular projection (42) on one of the two V-shaped walls of the second cavity (V2) and / or the work of a second of the two V-shaped walls of the triangular projection on the other of the two V-shaped walls of the second cavity (V2).

15. Bolt and strike plate system according to any one of claims 1 to 14, wherein said proximal end (EP) of engagement portion comprises a cylindrical portion coaxial with axis A, and wherein in the locked state (EV), the strike plate comprises a semi-cylindrical cavity, partially receiving the cylindrical portion, in particular the semi-cylindrical cavity arranged between the first projection (41) and the second projection (42).

16. Bolt and strike system according to claim 4 or 5 wherein the ramp of the guide surface (GD), increasing along the direction of the hooking member (40), relative to the fixing surface (43), towards said at least projection (41, 42) extends to a summit formed by a plate (PLT), substantially parallel to the fixing surface (43) of said strike, plate on which the distal end (ED) of the engagement part (3) abuts in said unlocked state (EDV).

17. System according to claim 13 or 14 in combination with claim 16 wherein the plate (PLT) extends along the length of the strike plate between the first projection (41) and the second projection (42).

18. System according to claim 16 or 17 wherein said proximal end (EP) of said engagement part (3) of the bolt (P) comprises a tapered portion of thickness Ep2, less than the thickness Epi of a median portion of the engagement part (3) between said distal end (EP) and said proximal end (ED), the tapered portion configured to come opposite the plate (PLT) in the locked state (EV).

19. Bolt and strike plate system according to any one of claims 1 to 18 wherein the bolt and strike plate are forged metal parts.

20. A bolt and strike plate system according to any one of claims 1 to 19, wherein: - the bolt has a plane of symmetry passing through the axis A of the male part (2), and through the longitudinal axis B of the engagement part (3), - the strike plate has a plane of symmetry passing through the longitudinal axis of said strike plate

21. A truck or semi-trailer door opening and closing device (1), comprising at least one door (PT) pivotally hinged to a jamb (M) of a frame (DM), the device (1) comprising a control bar (BC) pivotally hinged to the door by bearings (PL), and at least one bolt and strike plate system according to any one of claims 1 to 20, wherein the bolt (P) is fixed to one end of the control bar (BC), and the strike plate (G) is fixed by the mounting surface (43) to a cross member, upper or lower, of the door frame, and wherein the bolt and strike plate system is configured, during a pivoting motion (RD) of the bolt about axis A from the locked state (EV) to said unlocked state (EDV), to successively cause,during the pivoting to unlock (RD) of the bolt around axis A: - a disengagement between said at least one engagement portion (30) of the distal end of the bolt and the engagement member (40) of the strike plate, - a contact between the distal end (ED) of the bolt and at least one guide surface (SG) of the strike plate extending over the,

22. body (4) of the strike plate, lengthwise on the strike plate body, from a base of the hooking member (30), and in the direction of said at least one locking projection (41, 42), - a push of the bolt (P) on the strike plate by the distal end (ED) of the bolt sliding on the guide surface (SG), and until the axis B of the engagement portion (3) of the bolt is substantially perpendicular to the fixing surface (43) in an extraction position, and in which the extraction distance (DE) separating the axis A and the fixing surface (43) of the strike plate in said extraction position, at the end of the push, is greater than or also than 75mm, preferably greater than 80 mm, for example between 80mm and 110mm such as 87mm or 97mm, and preferably according to a displacement of the axis A by a projected stroke along a direction perpendicular to the fixing surface (43) greater than 50 mm, preferably greater than 55 mm, such as 60.5mm, or even greater than 65mm such as 70.5mm. Use of the opening and closing device according to claim 21 for a refrigerated semi-trailer or refrigerated truck door comprising sealing gaskets between the frame and the door, said bolt extraction position configured to ensure a movement of the door at the opening at the level of axis A, allowing an escape of the sealing gaskets.

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