Fastening system

Abstract

The invention relates to a fastening system (1), the fastening system (1) having a fastening unit (11) with a fastening block (110), to which a device (2) is attached or can be attached, and a holding unit (12) with a holding block (120), which is fixed or can be fixed to a wall or a rail device, wherein the fastening unit (11) and the holding unit (12) have joint elements which correspond to one another, one of the joint elements having at least one joint rod (114) and the other joint element having at least one joint rod receiving area (124) with a receiving opening (123) running parallel to the at least one joint rod (114); the at least one joint rod (114) can be suspended in the at least one joint rod receiving area (124) or the at least one joint rod receiving area (124) can be suspended on the at least one joint rod (114); and the fastening unit (11) and the holding unit (12) have snap lock elements which correspond to one another, one of the snap lock elements having at least one catch (6) which is spring-loaded by a catch spring (60) and the other snap lock element having at least one catch latch (31), the snap lock elements being used to connect the fastening unit (11) to the holding unit (12) or allow the fastening unit to be connected thereto in a state in which the fastening unit is suspended in or on the holding unit (12).

Description

[0001] fastening system

[0002] The present invention relates to a fastening system.

[0003] Such fastening systems are used, for example, in rescue and patient transport systems, in which devices, such as medical devices or technical products, must be carried for the care of patients and must be fastened accordingly in the respective transport system.

[0004] All devices must be secured during transport in such a way that they do not pose a danger to accompanying medical personnel or patients in the event of accidents or abrupt acceleration, braking, or steering maneuvers. At the same time, the use and operability of these devices for patient care must not be restricted, particularly not by the required secure fastening. The fastening and securing systems must comply with all relevant legal and regulatory requirements. For the care of patients outside the transport system, such as in an ambulance, the products and systems must be easily removable and, after the patient has been transferred, reinstalled and secured securely for transport.

[0005] To fulfill their purpose of patient care, the fastening systems must be functionally designed so that patient care products can be removed from the transport securing system when needed. When loading the patient, the fastening systems must lock again easily yet securely, ensuring the load securing function is restored. This repeated activation of the load securing system must be clearly recognizable to the user, e.g., audibly, haptically, or visually.

[0006] The medical device must be fully functional in both the locked and unlocked states. The connection and replacement of accessories must be ensured, and warnings, alarms, or indicators must not be suppressed or obscured by the locking mechanism. Only the manufacturer's designated mounting points may be used on the medical device to ensure secure attachment.

[0007] Universally applicable rail systems are used to mount medical devices; these are usually installed in vehicles as extruded profiles. They can be single rails or, to increase the load capacity, double rails.

[0008] In vehicles with a confined interior, restraint systems are not installed via standard rails, but directly on the vehicle wall.

[0009] German patent application DE 10 2017 110 001 A1 describes a fastening device for securing a medical device, for example, in an ambulance or rescue vehicle. The fastening device comprises an L-shaped base connected to the vehicle and an L-shaped adapter connected to the medical device. The adapter can be inserted into a guide profile of the base in an insertion direction parallel to a base of the base and locked into a fixed position by means of a locking mechanism. The locking mechanism has a pre-tensioned locking pin located in the base of the base, which engages in a recess formed in a base section of the adapter. The base has a handle for releasing the locking mechanism, whereby, by actuating the handle, the locking pin can be moved out of the recess in the base section in the opposite direction of the pre-tension.

[0010] From German patent application DE 20 2012 009 614 U1, a locking clamp is known that allows medical device components to be detachably and fixed in different positions on medical devices, such as on the support rail of a patient bed. The locking clamp has two clamping bodies with contact surfaces for the medical device component to be held. The first of these clamping bodies has an arm designed as a grip, which rests on the upper side of the support rail. One end of this arm is connected to the second clamping body via a swivel joint. At the free end of the second clamping body, scoop-like projecting fingers are provided. An underside of the first clamping body is connected to a toggle lever mechanism via another swivel joint. At a free end of the toggle lever mechanism, a retaining element with receiving slots is provided, into which the fingers of the second clamping body can engage.After the finger is inserted into the receiving slots, the second clamping body is pulled towards the first by tightening a handle of the toggle lever mechanism. At the end of this pulling action, the handle is recessed into a receptacle located on the outside of the first clamping body. An internal thread is located on the top side of the first clamping body, into which a supporting structure, such as a support rod for an infusion device, can be screwed.

[0011] The well-known locking clamp has the disadvantage that it can only be operated from below and is therefore not ergonomically sound. Furthermore, if large and heavy medical devices are to be held with this system, several locking clamps must be used to provide the necessary holding force. This means that multiple locking clamps must be operated when removing and replacing the device. The possibility of one or more locking clamps accidentally failing to close cannot be ruled out, thus compromising the required load securing.

[0012] German patent application DE 10 2015 208 404 B3 describes a clamping device for attaching mobile intensive care equipment to a profile mounting rail. The clamping device has a U-shaped clamping section for gripping the underside of the profile mounting rail. A clamping shoe grips the upper side of the profile mounting rail and is pressed against the rail by means of a push rod. A toggle lever is provided at the upper end of the push rod and is kinematically connected to a pivoting clamping lever. The pivoting movement of this lever causes the push rod, guided by a guide section, to press against the upper side of the clamping shoe. The clamping section is connected to the clamping shoe by a base section, which serves as a receiving element for the device to be held.

[0013] This clamping device allows for greater force to be applied, enabling even heavy devices to be held on the profile mounting rail. However, a problem arises because the entire device suspended from the mounting element must be lifted upwards using the clamping lever when clamping.

[0014] The object of the present invention is therefore to provide a fastening system suitable for use in ambulances, with which even heavy equipment can be securely held on a wall or a rail system permanently installed in the ambulance, which can be securely locked with little effort and which can be quickly and reliably released from the locking position.

[0015] This problem is solved by a fastening system comprising a fastening unit with a fastening block to which a device can be attached or mounted, and a holding unit with a holding block that can be fixed or fixed to a wall or rail system, wherein the fastening unit and the holding unit have corresponding joint elements, which on the one hand have at least one joint rod and on the other hand have at least one joint rod receptacle with a receiving opening running parallel to the at least one joint rod, wherein the at least one joint rod can be hooked into the at least one joint rod receptacle or the at least one joint rod receptacle can be suspended onto the at least one joint rod;and the fastening unit and the holding unit have corresponding snap-lock elements, which on the one hand have at least one catch under spring tension of a latch spring and on the other hand at least one catch latch and by which the fastening unit can be connected or is connected to the holding unit in a state suspended in or on the holding unit.

[0016] In the present invention, the mounting unit is attached to a wall, for example an interior wall of an ambulance, or to a rail system that is, for example, permanently fixed to an interior wall of an ambulance. The rail system used can have single or double rails. The mounting system according to the invention can be used regardless of whether the rails used are designed as solid profiles with integrated wall brackets or as open standard rails with spacers.

[0017] The mounting unit of the fastening system features a retaining block made of a solid material, such as metal, which may, for example, have a flat back or mounting surface with through holes through which screws can be inserted to attach the retaining block to the wall. If the retaining block is to be attached to a rail system, it may have at least one clamping device on its back that projects towards the rail system.

[0018] Furthermore, the fastening system according to the invention comprises a fastening unit with a mounting block to which the device to be fastened is or can be mounted. For this purpose, the mounting block can, for example, have a flat front or mounting surface with through holes through which screws can be inserted, with which the corresponding device can be screwed to the mounting block. However, it is also possible to provide an adapter on the device to be fastened, with which the fastening unit can be easily connected.

[0019] The mounting unit and the fastening unit are separately designed components of the fastening system, allowing the fastening unit to be transported independently of the mounting unit, both with and without the device attached. Conversely, the mounting unit and the fastening unit can be permanently connected, so that when the mounting unit is fixed to the wall or rail system and the fastening unit is connected to the mounting unit, the device attached to the fastening unit is also securely fixed to the wall or rail system.

[0020] To create the connection between the holding unit and the fastening unit, these are first linked together. The corresponding joint elements of the holding unit and the fastening unit are used for this purpose. The at least one articulated rod is inserted into the respective receiving opening of the at least one articulated rod receptacle, or the at least one articulated rod receptacle is hung with its receiving opening onto the at least one articulated rod.

[0021] In the present invention, the insertion or suspension of the at least one articulated rod is carried out in a direction of movement that is transverse, preferably at an angle of 90°, to the longitudinal orientation of the respective receiving opening. This allows the articulated elements to be easily inserted or suspended by a movement of the fastening unit towards the holding unit, or vice versa.

[0022] The at least one articulated rod receptacle preferably has a depth that is greater than the diameter of the respective articulated rod, so that the respective articulated rod is securely held in the respective receptacle opening.

[0023] Once this mounting or suspension has taken place, the at least one articulated rod forms a pivot axis, around which the fastening unit can be pivotally moved relative to the holding unit until the corresponding snap-lock elements of the holding unit and the fastening unit engage with each other, thereby creating a closed connection between the holding unit and the fastening unit. To establish this closed connection, the spring-loaded snap engages in the snap-lock latch.

[0024] In the present invention, the snap can be formed on the fastening element and the snap latch can be formed on the retaining element. However, it is also possible that the snap is formed on the retaining element and the snap latch is formed on the fastening element.

[0025] In an advantageous embodiment of the fastening system according to the invention, the at least one articulated rod is held at both its rod ends and at its rod center by rod retaining elements, wherein the rod retaining elements either project from the retaining block in the direction of the fastening unit or project from the fastening block in the direction of the retaining unit; and the articulated rod receptacle has, in the longitudinal direction of the articulated rod, at each of its two receiving end regions a receiving limiting block located opposite the retaining block or the fastening block, wherein a material break is formed between the receiving limiting blocks;and wherein, when the fastening block is suspended in or on the retaining block, the rod retaining element located at the center of the rod engages in the material break, and the rod retaining elements located at both ends of the articulated rod are arranged on the outer surfaces of the receiving limit blocks. The rod retaining elements create a gap between the at least one articulated rod and a surface of the respective block on which it is held, i.e., the retaining block or the fastening block. This gap allows the at least one articulated rod to be easily inserted into the at least one articulated rod receptacle. Furthermore, the rod retaining elements, together with the material break and the receiving limit blocks, define the position of the at least one articulated rod in the at least one articulated rod receptacle, with only a small degree of clearance.

[0026] In the present invention, the articulated rod can be formed on the mounting unit and the articulated rod receptacle on the holding unit. However, it is also possible that the articulated rod is formed on the holding unit and the articulated rod receptacle is formed on the mounting unit.

[0027] Preferably, at least one articulated rod is arranged on the fastening unit opposite the snap latch and at least one articulated rod receptacle is arranged on the holding unit opposite the snap latch, wherein the snap latch slopes towards the holding block and has an inclined surface facing the fastening unit.

[0028] The design of the articulated rod on the mounting unit offers the advantage that the user has a clear view of the rod receptacle and can therefore easily hook the articulated rod, which is located on the mounting unit (to which the device to be attached to the wall or rail system is attached), into the rod receptacle. During the hooking process, the mounting element moves relative to the mounting unit containing the articulated rod receptacle and, at a certain point in the movement, presses against the angled surface of the catch. As the mounting unit continues to move, the catch can then easily and securely slide into the catch position opposite the articulated rod on the mounting unit.

[0029] Preferably, the fastening system comprises a spring-loaded bolt oriented transversely to a snap direction of the catch and movable only transversely to the snap direction, and a bolt counterpart corresponding to the bolt; wherein a contact side of the catch facing away from the catch latch is connected to a bearing side of the bolt counterpart; wherein the bolt has a bolt profile on its bolt profile side facing away from the catch; wherein the bolt profile has a profile projection with two outer sliding surfaces oriented at an angle to each other; wherein the bolt counterpart is arranged in a bolt counterpart guide in which it is movable by the bolt in the snap direction of the catch, and wherein the bolt counterpart has a recess with inner sliding surfaces that are oriented at the same angle to each other as the outer sliding surfaces of the profile projection;and the profile projection extends into the recess, with at least one of the outer sliding surfaces slidably resting against one of the inner sliding surfaces.

[0030] Through the interaction of the bolt with the bolt counterpart, the snap can be retracted from its locked position in the snapper by moving the bolt, thereby allowing the mounting unit, and consequently any attached device, to be removed from the holding unit. In the proposed embodiment, the position of the bolt counterpart determines the position of the snap. When the bolt's profile projection is correctly positioned in the recess of the bolt counterpart in an end position, the snap is in its locked position in the snapper. If the bolt is moved transversely to the snap direction by pulling or pushing it in this direction, the profile projection moves out of its end position, with an outer sliding surface of the profile projection sliding along an inner sliding surface of the recess.Since the bolt cannot be moved in the snap direction of the latch, its sliding action along the recess pushes the counterpart bolt, which is movable in the snap direction, away from the latch. The engagement of the latch with the counterpart bolt pulls the latch out of the latch.

[0031] The bolt is spring-loaded in such a way that when it is not pulled or pushed, the profile projection lies correctly in the recess and the catch is engaged in the catch latch.

[0032] In an advantageous embodiment of this invention, a recess is formed at each of the proximal ends of the outer sliding surfaces, and a lug is formed at each of the distal ends of the inner sliding surfaces. This design allows the two lugs to engage in the recesses when the profile projection is in its end position, ensuring that the latch remains securely locked in its engaged position when the latch is not being pulled or pushed.

[0033] If, according to one embodiment of the invention, the bolt is guided on both sides of the profile projection by friction-forming sleeves, it can be moved securely transversely to the snapping direction, while simultaneously preventing movement of the bolt in the snapping direction. Due to the friction-forming sleeves, the bolt is prevented from snapping back quickly when it is pressed or pulled.

[0034] To enable a user of the fastening system to easily unlock the latch, one embodiment of the invention incorporates a pull and / or push rod at at least one end of the latch. The pull and / or push rod(s) each have a recess into which one or more of the user's fingers can be inserted, allowing the position of the latch to be changed. The respective pull and / or push rod is itself made of a robust material, such as metal, and is either firmly connected to the latch or integrally formed with it.

[0035] It has proven particularly advantageous if at least one indicator element projects from a surface of the counterpart facing away from the profile projection, each of which is movably guided through a through-opening formed in the fastening block or the retaining block.

[0036] For example, a pin can be used as an indicator. This has the advantage that the position of at least one indicator shows whether the fastening system is locked or unlocked. If at least one indicator protrudes to a certain length, the fastening system is not yet fully locked. If at least one indicator is recessed, this indicates that the fastening system is locked. The respective indicator has the advantage of being both visually and tactilely identifiable.

[0037] A preferred embodiment of the present invention is explained in more detail below with reference to figures, wherein Figure 1 schematically shows a fastening unit of an embodiment of a fastening system according to the invention in a perspective rear view;

[0038] Figure 2 schematically shows the fastening unit from Figure 1 in a perspective side view;

[0039] Figure 3 schematically shows the fastening unit from Figures 1 and 2, to which a device to be fastened with the fastening system is attached.

[0040] Figure 4 schematically shows a holding unit of an embodiment of a fastening system according to the invention in a perspective front view;

[0041] Figure 5 schematically shows the fastening unit shortly before it is hooked into the holding unit;

[0042] Figure 6 schematically shows a state of the fastening system in which the fastening unit is hooked into the holding unit;

[0043] Figure 7 schematically shows the holding unit from Figure 4 in a rear view;

[0044] Figure 8 schematically shows an internal structure of the holding unit from Figures 4 and 7 in a rear view in the not yet locked state;

[0045] Figure 9 schematically shows the internal structure of the holding unit from Figures 4, 7 and 8 in a rear view in the locked state;

[0046] Figure 10 schematically shows a rear view without a latch of an area of ​​the internal structure of the holding unit from Figures 4, 7 and 8 that lies behind the area shown in Figures 8 and 9;

[0047] Figure 11 schematically shows the fastening system in the locked state in a perspective top view; Figure 12 schematically shows the fastening system in the unlocked state in a perspective rear view; and

[0048] Figure 13 schematically shows the fastening system in the locked state with the device attached.

[0049] Figure 1 schematically shows a mounting unit 11 of an embodiment of a mounting system 1 according to the invention in a perspective rear view. The mounting unit 11 has a mounting block 110 on its front side. Rod retaining elements 111, 112, 113 project from the mounting block 110 to the rear side of the mounting unit 11. The rod retaining elements 111, 112, 113 hold a hinged rod 114, with the two outer rod retaining elements 111, 113 each having a through-hole 115 in which one end of the hinged rod 114 is received. The hinged rod 114 has a round cross-section. The hinged rod 114 is divided into two sections by the middle rod retaining element 112.

[0050] The center of the articulated rod 114 is received in a through-bore of the central rod retaining element 112. The two outer rod retaining elements 111, 113 are each part of C-shaped outer walls 116, 117 of the fastening unit 11, which project from the fastening block 110 towards the rear of the fastening unit 11.

[0051] Sections 118, 119 of the outer walls 116, 117 opposite the rod retaining elements 111, 113 are formed on both sides by a snap-lock 31 in a base 3 of the fastening unit 11. The snap-lock 31 is a recess formed in the base 3.

[0052] Figure 2 schematically shows the mounting unit 11 from Figure 1 in a perspective side view. Areas of one device side 4 of the mounting unit 11 are visible. The mounting unit 11 is configured on its device side 4 corresponding to an adapter 44 provided on the device 2, which is not shown in Figure 2.

[0053] As shown schematically in Figure 3, the device 2 is received on the device side 4. For this purpose, the adapter 44 has a contour adapted to the shape of the device side 4. In the embodiment shown, the device side 4 has projections 41, 42 in which through holes 43, 45 with internal threads are formed, into which screws 46 can be screwed to fasten the device 2.

[0054] The adapter 44 provided on the device 2 ensures the interchangeability of devices 2 to be attached using the mounting system 1, as long as these devices 2 have such a device-specific adapter 44. The adapter 44 can, for example, be a mounting plate that is attached to approved mounting points of the respective device 2.

[0055] Figure 4 schematically shows a holding unit 12 of the fastening system 1 in a perspective front view.

[0056] The holding unit 12 has a holding block 120 which carries a locking mechanism 5. The locking mechanism has a bolt 50, the two bolt ends 51, 52 of which are shown in Figure 4, wherein the bolt ends 51, 52 are each connected to a pull and / or push rod 53, 54. The pull and / or push rod 53, 54 each has an engagement 55, 56 through which a user of the fastening system 1 can insert one or more fingers to pull or push on the bolt 50 and thereby move the bolt 50 in a direction of movement R.

[0057] The locking mechanism 5 further comprises a catch 6 which is under the spring tension of a latch spring (not shown here), the snap direction S of which runs transversely to the direction of movement R of the bolt 50.

[0058] On the side of the holding unit 12 opposite the snapper 6, it has a pivot rod receptacle 124. The pivot rod receptacle 124 serves to receive the pivot rod 114. For this purpose, the pivot rod receptacle 124 has a receiving opening 125 running parallel to the pivot rod 114. The pivot rod receptacle 124 also has a receiving base, which in the illustrated embodiment is formed by the groove bottoms of grooves 126, 127 that are formed in receiving limit blocks 121, 123 projecting from the holding block 120 to the front of the holding unit 12. A material break 122 is located between the two receiving limit blocks 121, 123.When the articulated rod 114 is inserted into the articulated rod receptacle 124, as can be seen, for example, in Figure 5, the articulated rod sections located on both sides of the rod's center are inserted into the grooves 126, 127, while the central rod retaining element 112 is inserted into the material break 122. Furthermore, the rod retaining elements 111, 113, located at the two rod ends of the articulated rod 114, are then positioned on the outer sides of the receptacle limiting blocks 121, 123.

[0059] The holding unit 12 is preferably attached to a wall or rail system such that the joint rod receptacle 124 is located on a top side of the holding unit 12, as shown in Figure 5.

[0060] Figure 6 schematically shows a state of the fastening system 1 in which the fastening unit 11 is hooked into the holding unit 12.

[0061] As shown schematically by arrow P, a gravity-driven pendulum movement of the fastening unit 11 relative to the holding unit 12 then takes place, by which the snap 6 engages in the snap latch 31.

[0062] Figure 7 schematically shows the holding unit 12 from Figure 4 in a rear view.

[0063] Figure 8 schematically shows an internal structure of the holding unit 12 from Figures 4 and

[0064] 5 in a rear view in the unlocked state.

[0065] Figure 8 shows, among other things, the S of the snapper, perpendicular to the snap direction.

[0066] The bolt 50 is held and guided on both sides by a sleeve 61, 62, allowing it to move back and forth only in the direction of movement R. The sleeves 61, 62 are each made of a material that acts as a friction element, preventing the spring-loaded bolt 50 from snapping back quickly when pulled or pushed.

[0067] The bolt 50 has a bolt profile on its bolt profile side facing away from the catch 6. The bolt profile has a profile projection 7 with two outer sliding surfaces 71, 72 aligned at an angle α to each other. In the embodiment shown, the angle α is an obtuse angle. A recess 73, 74 is formed at each end of the outer sliding surfaces 71, 72. Extending outwards from the respective recess 73, 74, the bolt 50 is designed as a strip with parallel, profileless opposing surfaces, which allows it to be easily pulled or pushed back and forth through the sleeves 61, 62.

[0068] The locking mechanism 5 further comprises a bolt counterpart 8 corresponding to the bolt 50. The bolt counterpart 8 is arranged in a recess formed in the retaining block 120, which forms a bolt counterpart guide 9 in which the bolt counterpart 8 is movable in the snapping direction S. Since the bolt counterpart 8 is connected to the snap 6, the snap 6 is moved along with the bolt counterpart 8 when it moves, and the snap 6 remains in its respective position when the bolt counterpart 8 is not moved.

[0069] The locking counterpart 8 has a recess 80 with internal sliding surfaces 81, 82. The internal sliding surfaces 81, 82 form an angle between them which corresponds to angle α.

[0070] In the unlocked position of the fastening system 1 shown in Figure 8, the bolt 50 is pulled outwards – to the right in the illustration – until a distal end section of the outer sliding surface 71 rests against a distal end section of the inner sliding surface 81. This pushes the bolt counterpart 8 furthest into the bolt counterpart guide 9 – upwards in the illustration – by means of the bolt 50. Accordingly, the catch 6 connected to the bolt counterpart 8 is located outside the catch latch 31. Furthermore, in this position, pins 91, 92 attached to the bolt counterpart 8 opposite the catch 6 protrude from the retaining block 12.

[0071] Figure 9 schematically shows the internal structure of the holding unit 12 from Figures 4, 7 and 8 in a rear view in the locked state.

[0072] In the state shown in Figure 9, the bolt 50 is pushed or pulled by one of the pull and / or push rods 53, 54 such that the profile projection 7 is correctly positioned in the recess 80. To move from the state shown in Figure 8 to this state, the outer sliding surface 71 of the profile projection 7, which rests against the inner sliding surface 81 of the recess 80, was moved along the inner sliding surface 81 – from right to left in the illustration – with the inner sliding surface 81 sliding along the outer sliding surface 71. This caused the bolt counterpart 8 to move towards the bolt 50 – i.e., downwards in the illustration. Accordingly, the catch 6 moved into the catch latch 31, and the pins 91, 92 lowered.

[0073] In the locking position shown in Figure 9, lugs 83, 84 formed at the distal ends of the inner sliding surfaces 81, 82 are located in recesses 73, 74 formed at the proximal ends of the outer sliding surfaces 71, 72. This provides additional security for the locking position.

[0074] Figure 10 schematically shows a rear view of an area of ​​the internal structure of the retaining unit 12, located behind that shown in Figures 8 and 9, from Figures 4, 7 and 8, without the bolt 50. The bolt counterpart 8 with its internal sliding surfaces 81, 82 and the recess 80 are visible in this view. The latch spring 60, which puts the catch 6 under spring tension, is also visible.

[0075] Figure 11 schematically shows the fastening system 1 in a locked state in a perspective top view. The fact that a locked state exists is evident from the absence of any pins protruding from the retaining block 120.

[0076] Figure 12 schematically shows the fastening system 1 in its unlocked state in a perspective rear view. The unlocked state is indicated by the pins 91, 92 protruding from the retaining block 120. The pins 91, 92 form a mechanically extendable indicator unit which—as described above—extends automatically when the unlocking mechanism of the fastening system 1 is activated, i.e., when the latch 50 is pressed or pulled. This provides visual and haptic feedback of the locked state.

[0077] Figure 13 schematically shows the fastening system 1 in the locked state with the device 2 attached. The device 2 can be removed from the wall or rail system to which it is attached by means of the fastening system 1 according to the invention using one hand. To do this, the user unlocks the fastening system 1 by pushing or pulling on one of the pull and / or push rods 53, 54, grasps the device 2 with the same hand, removes the device 2 from the articulated rod receptacle 124, whereby the latch 50 slowly returns to its end position due to the friction of the sleeves 61, 62.

Claims

AMENDED CLAIMS received by the International Bureau on 03 February 2026 (03.02.2026) 1. Fastening system (1) comprising a fastening unit (11) with a fastening block (110) to which a device (2) can be attached or is attached, and a holding unit (12) with a holding block (120) that can be fixed or is fixed to a wall or a rail system, wherein the fastening unit (11) and the holding unit (12) have corresponding joint elements, which on the one hand have at least one joint rod (114) and on the other hand have at least one joint rod receptacle (124) with a receiving opening (123) extending parallel to the at least one joint rod (114), wherein the at least one joint rod (114) can be inserted into the at least one joint rod receptacle (124) or the at least one joint rod receptacle (124) can be suspended onto the at least one joint rod (114);and the fastening unit (11) and the holding unit (12) have corresponding snap-lock elements, which on the one hand have at least one snap (6) under spring tension of a latch spring (60) and on the other hand at least one snap latch (31) and by which the fastening unit (11) can be connected to or is connected to the holding unit (12) in a state suspended in or on the holding unit (12), characterized in that the fastening system (1) has a spring-loaded bolt (50) oriented transversely to a snap direction (S) of the snap (6) and movable only transversely to the snap direction (S) and a bolt counterpart corresponding to the bolt (50); wherein a contact side of the snap (6) facing away from the snap latch (31) is connected to a bearing side of the bolt counterpart (8); wherein the bolt (50) has a bolt profile on its bolt profile side facing away from the snap (6);wherein the bolt profile has a profile projection (7) with two outer sliding surfaces (71, 72) oriented at an angle to each other; wherein the bolt counterpart (8) is arranged in a bolt counterpart guide (9) in which it is movable by the bolt (6) in the snap direction (S) of the catch (6), and wherein the bolt counterpart (8) has a recess (80) with inner sliding surfaces (81, 82) which are oriented at the same angle (a) to each other as the outer sliding surfaces (71, 72) of the profile projection (7); and the profile projection (7) into the; 20 AMENDED SHEET (ARTICLE 19) The recess (80) protrudes, with at least one of the outer sliding surfaces (71 , 72) sliding against one of the inner sliding surfaces (81 , 82).

2. Fastening system according to claim 1, characterized in that the at least one articulated rod (114) is held at both its rod ends and at its rod center by rod retaining elements (111, 112, 113), wherein the rod retaining elements either project from the retaining block (120) in the direction of the fastening unit (11) or project from the fastening block (110) in the direction of the retaining unit (12); and the articulated rod receptacle (124) has, in the longitudinal direction of the articulated rod, at each of its two receiving end regions a receiving limiting block (121, 123) opposite the retaining block (120) or the fastening block (110), wherein a material interruption (122) is formed between the receiving limiting blocks (121, 123);and wherein, when the fastening block (110) is suspended in or on the retaining block (120), the rod retaining element (112) arranged at the center of the rod engages in the material break (122) and the rod retaining elements (111, 113) arranged at the two rod ends of the articulated rod (114) are arranged on outer sides of the receiving limiting blocks (121, 123).

3. Fastening system according to one of the preceding claims, characterized in that at least one articulated rod (114) is arranged opposite the snap latch (31) on the fastening unit (11) and at least one articulated rod receptacle (124) is arranged opposite the snap (6) on the holding unit (12) and the snap (6) slopes towards the holding block (120) and has an inclined surface facing the fastening unit (11).

5. Fastening system according to one of the preceding claims, characterized in that a recess (73, 74) is formed at each proximal end of the outer sliding surfaces (71 , 72) and a nose (83, 84) is formed at each distal end of the inner sliding surfaces (81 , 82). 21 AMENDED SHEET (ARTICLE 19) 6. Fastening system according to one of the preceding claims, characterized in that the bolt (50) is guided on both sides of the profile projection (7) by sleeves (61 , 62) forming friction elements.

7. Fastening system according to one of the preceding claims, characterized in that a pull and / or push rod (53, 54) is formed at at least one end (51, 52) of the bolt (50).

8. Fastening system according to one of the preceding claims, characterized in that at least one indicator element projects from a surface of the bolt counterpart (8) facing away from the profile projection (7), the indicator element being movably guided through a through-opening formed in the fastening block (110) or the retaining block (120). 22 AMENDED SHEET (ARTICLE 19)

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