Support device for furniture shelves with optimized load transmission and combination of the device with a seat

Abstract

The present invention relates to a shelf support device (1, 1', 1") adapted to establish a reversible connection of a shelf (200) with a relative shoulder (300) of a piece of furniture. According to the invention, the shelf support (1, 1', 1") comprises a body (12, 12', 12") having a solid portion corresponding to an anterior region (14) of the body, from the front surface (14a) of which a connecting pin (11) protrudes, and a shaped profile such that, when the device is assembled to the shelf, at least a portion of the upper surface (12c, 12c', 12c") of the body (12, 12', 12") does not come into contact with the upper inner wall (201') of the housing seat (201) of the body (12, 12', 12") formed inside said shelf (200).

Description

Technical Field

[0001] The present invention relates to a combination of a seat and an improved support device for furniture shelves, the support device being used to reversibly connect the shelves to opposite shoulders of the furniture.

[0002] The device according to the invention responds to a need felt in the art, namely, to provide a furniture shelf with a support device that connects to the shoulder of increasingly miniaturized furniture in order to minimize aesthetic impact, and which may be completely out of sight when the shelf is assembled, while the shelf is capable of supporting even very heavy loads in response to the need to ensure a safe and stable connection.

[0003] The present invention provides a combination of a seat and a shelf support that optimizes the transfer of loads generated during normal use. Existing technology

[0004] The type of device considered herein is commonly referred to in the art as a shelf support and functions to allow the horizontal element (shelf) of a piece of furniture to be stably but removably supported and secured between two vertical elements commonly referred to as the shoulder of the furniture.

[0005] The shelf and the shoulder are arranged perpendicular to each other.

[0006] This type of shelf support is known in the prior art, and in particular, the applicant himself is the holder of Italian patent application numbers 102019000013428 and 102019000016343, which describe the present invention as a device representing a further improvement.

[0007] More specifically, these known solutions typically respond to the need to produce shelf support devices that have minimal aesthetic impact once assembled into the shelf and allow for easy and quick assembly and disassembly of the shelf itself relative to the shoulder of the furniture.

[0008] By way of example only, referring to Figures 1 to 3, an embodiment of a known type of shelf support 100' is shown, which allows for a reversible connection between the shelf and the shoulder of the furniture.

[0009] The reversible connection between the shelf 200 and the shoulder 300 of the furniture is achieved by a shelf support device 100', which includes a pin or plug 110 connected to a movable engagement device 150 of the device, the movable engagement device being adapted to move the pin 110 relative to the body 120 of the device itself.

[0010] The main body 120 is configured to be inserted into the shelf, particularly into a receiving portion formed within the thickness of the shelf, such that when the device is assembled on the shelf, the pin or plug 110 is movable between operating positions in which the pin or plug protrudes from the edge B of the shelf 200 so as to be inserted into a corresponding receiving hole 301 formed on the shoulder 300 of the furniture.

[0011] As already mentioned, this known type of shelf support device 100' includes a body 120, relative to which a movable engagement device 150 is slidably associated, and further associated with an engagement pin 110.

[0012] Since the device 100' is configured to be inserted into the thickness of the shelf 200, the body 120 has a box-like shape and is preferably formed by joining two half-shells, as can be seen, for example, in the exploded view of FIG1.

[0013] However, the types of shelf support devices described so far are not without their drawbacks.

[0014] One of these drawbacks is the resistance of the device itself to the load, but it is also due to the complexity of the shelf and the device.

[0015] In fact, the need to provide increasingly smaller devices in order to minimize the aesthetic impact of the installation and the housing to be created within the shelf often involves insufficient resistance to loads.

[0016] In particular, miniaturization of shelf support devices involves a greater concentration of the load transferred through the device to the shelf itself as the contact surface between the device and the inner surface of the device's housing within the shelf thickness is reduced.

[0017] For example, see attached document. Figure 15 and 16 The load P acting on the shelf generates a reaction force Rp on the pin of the device, and the reaction force Rp is involved in transferring the resultant force Rr from the shelf support to the shelf.

[0018] like Figure 16 As shown, due to the presence of the device housing formed in the portion of the shelf with a smaller thickness, the resultant force Rr transmitted from the device to the shelf acts specifically corresponding to the portion.

[0019] This clearly means that there are limitations imposed by load resistance on the possibility of miniaturizing the shelf support device and reducing the thickness of the shelf itself. Summary of the Invention

[0020] Based on the above description, the objective of this invention is to address the shortcomings of known shelf support devices in the prior art.

[0021] In this context, the object of the present invention is to provide a combination of a seat and a shelf support device for supporting and securing the shelf to the shoulder of furniture, which further improves the mechanical resistance of the shelf support itself and the mechanical resistance of the shelf support + shelf composite, while maintaining a reduced size and a reduced aesthetic impact; in this context, the invention also relates to a shelf support device configured for the combination.

[0022] The present invention also aims to provide a more versatile combination of a shelf support device and a seat for accommodating the device, because it can be inserted into a shelf with a greatly reduced thickness, thus allowing it to be used with a variety of shelf types and in furniture with a particularly refined aesthetic effect.

[0023] The aforementioned tasks, objectives, and other objectives, which will become more apparent below, are achieved by a shelf support device for reversibly connecting a shelf to the shoulder of a piece of furniture, as described in claim 1.

[0024] Other features of the preferred embodiments of the device according to the invention described in this application are for the purposes of the dependent claims.

[0025] List of Attachments

[0026] Other features and advantages will become more apparent from the description of a preferred, but not exclusive, embodiment of a shelf support for reversibly connecting a shelf to the shoulder of furniture, illustrated by way of the accompanying drawings in a non-limiting manner:

[0027] Figures 1 to 3 show shelf support devices of the type known in prior patent applications from the same applicant as the above-mentioned applicant;

[0028] Figure 4 An exploded view of the shelf support device according to the present invention is shown;

[0029] Figure 5 and Figure 6 Top and bottom perspective views of the shelf support device according to the present invention are shown respectively;

[0030] Figure 7 A bottom view of the device according to the invention is shown;

[0031] Figure 8 A right-side view of the device according to the invention is shown;

[0032] Figure 9 It shows that according to Figure 8 The cross section of the device is AA.

[0033] Figure 10and Figure 11 The front and rear views of the shelf support device according to the present invention are shown respectively;

[0034] Figure 12 A left-side view of the device according to the invention is shown;

[0035] Figure 13 A top view of the shelf support device according to the present invention is shown;

[0036] Figure 14 It shows that according to Figure 13 The cross-section of the device BB;

[0037] Figure 15 and Figure 16 The load acting on the shelf mounted on the shoulder is shown, as well as the resulting stress acting on the pins of the shelf support.

[0038] Figure 17 A cross-sectional view of a shelf support device according to a first preferred embodiment of the present invention is shown in a transverse vertical plane, the shelf support device being inserted into a seat formed in a shelf;

[0039] Figure 18 A cross-sectional view of the transverse vertical plane of a shelf support device according to a second preferred embodiment of the present invention is shown, the shelf support device being inserted into a seat formed in a shelf;

[0040] Figure 19 A cross-sectional view of the transverse vertical plane of a shelf support device according to a third preferred embodiment of the present invention is shown, the shelf support device being inserted into a seat formed in a shelf. Detailed Implementation

[0041] Referring specifically to Figures 1 to 3, these figures illustrate embodiments of a known type of shelf support device 100' for reversibly connecting a shelf 100' to opposite shoulders 200 of furniture, as known from the aforementioned patent application of the same applicant.

[0042] The shelf support device 100' is of the type suitable for connection by means of a pin 110, which is associated with the shelf 200 and configured to protrude from the lateral edge B of the shelf 200 and is adapted to be inserted into a corresponding receiving hole 301 formed on the shoulder 300 of the furniture, and has a body 120 to which a movable engagement device 150 is slidably associated, which is integrally manufactured with the pin 110 or can be associated with the pin in a form-fitting, interlocking or similar system.

[0043] A known type of device 100' includes a body configured for insertion into the thickness of a shelf.

[0044] When device 100' is in use, for example as shown in Figures 3 and 4, the load acting on pin 110 is Figure 15 and 16 The loads are schematically shown in the diagram.

[0045] As attached Figure 15 and 16 As shown, the load P acting on the shelf generates a reaction force Rp on the pin of the device, which in turn involves transferring the resultant force Rr from the shelf support to the shelf.

[0046] like Figure 16 As shown, since a receiving seat for the device is formed in a portion of the shelf with a smaller thickness, the resultant force Rr transmitted from the known device 100' to the shelf 200 specifically corresponds to said portion and acts accordingly.

[0047] For the sake of brevity, reference will be made without distinction below to the combination of the receiving seat and the shelf support device 1, 1', 1" as they are all objects of the present invention; it should be immediately clear that the features of the described and further claimed shelf support should be understood both as the shelf support device intended as part of the combination with its receiving seat and as the shelf support device itself (alone), since it is explicitly configured for the combination of the present invention.

[0048] Specific reference Figures 4 to 19 According to the invention, shelf support devices 1, 1', 1" for reversibly connecting shelf 200 to shoulder 300 of furniture are configured to be inserted into a seat 201 formed within the thickness of shelf 200, and for this purpose include bodies 12, 12', 12" slidably associated with connecting pin 11, pin 11 being movable between a first operating position and a second retracted position, in the first operating position, pin 11 protruding from shelf 200 so as to be inserted into a receiving seat 301 formed on one of the shoulders 300, and in the second retracted position, pin 11 not protruding from shelf 200 or protruding so as to be released from the receiving seat 301 formed in the shoulder in any case.

[0049] The shelf support device according to the invention advantageously includes bodies 12, 12', 12" having a solid portion corresponding to its front region 14.

[0050] In this specification and the appended claims, the term "solid portion" should be understood as a front region having a continuous wall interrupted only by the hole through which pin 11 passes; for example, in Figure 4 As is clearly visible, the front region 14 is actually the part of the device near the front surface 14a, from which the pin 11 protrudes, and when the device is assembled, the front surface 14a faces the shoulder of the furniture.

[0051] In the front cross section, the area of ​​the hole through which pin 11 passes is approximately 10 times smaller than the continuous surface of the front region; this ensures high robustness.

[0052] Since the bodies 12, 12' internally include a device 30 for moving the pin 11, and therefore their internal shape is configured to provide a seat 21 for accommodating the moving device 30, the shelf bracket according to the invention provides that the bodies 12, 12' have a front portion 14, which is unaffected by the reduction in material thickness caused by forming the seat 21. Therefore, this front portion 14 has a cross-section in a transverse plane having full thickness, within which the support 14', which will be further shown below, is formed.

[0053] Furthermore, the bodies 12, 12', 12" advantageously have a shaped profile such that when the device is assembled to the shelf, at least a portion of the upper surfaces 12c, 12c', 12" of the bodies 12, 12" do not contact the upper inner wall 201' of the receiving seat 201 of the bodies 12, 12', 12" formed within the shelf 200.

[0054] The upper surfaces 12c, 12c', 12c" of the main bodies 12, 12', 12" are configured not to contact the upper inner wall 201' of the receiving seat 201 formed in the shelf, at least a portion of which is advantageously positioned to correspond to the front region of the shelf support devices 1, 1', 1" from which the connecting pin 11 protrudes, because in this region the stress transmitted from the pin 11 through the main bodies 12, 12', 12" to the shelf is most concentrated.

[0055] The at least portion of the upper surfaces 12c, 12c', and 12" of the main bodies 12, 12', and 12" that are configured not to contact the upper inner wall 201' of the receiving seat 201 formed in the shelf affects the entire front region 14 of the device.

[0056] In an alternative implementation, in the appendix Figures 4 to 14 As illustrated by way of an embodiment, the portion of the upper surfaces 12c, 12c', 12" of the bodies 12, 12', 12" that are configured not to contact the upper inner wall 201' of the receiving seat 201 formed in the shelf affects the entire length of the bodies 12, 12', 12" where the length represents the longitudinal dimension.

[0057] For example from Figure 17 , 18 As can be seen in 19, the receiving seat 201 formed in the shelf 200 is advantageously obtained by milling and has a generally elliptical profile in the transverse plane.

[0058] As is known, the transverse elliptical profile of the receiving seat 201 can be easily obtained by milling operations, and is therefore a preferred form along with the simple circular cross-section of the cylindrical hole.

[0059] like Figure 17 , 18 As shown in Figures 1 and 19, when viewed in a transverse plane, the shelf supports 1, 1', 1" according to the invention have inclined surfaces corresponding to at least a portion of their upper surfaces 12c, 12c', 12c" such that the upper surfaces do not contact the upper inner surface 201' of the receiving seat 201.

[0060] The inclined plane advantageously affects the front region 14 of the device or its entire length, as described above.

[0061] exist Figure 5 In the three-dimensional view, the flat outline of the upper part of the device is also clearly visible.

[0062] Furthermore, the main body 12 of the shelf support device 1 according to the invention advantageously includes one or more outwardly extending protruding elements 13 on its outer surface.

[0063] Specifically, from such Figure 5 3D diagram, from Figure 13 The view above and from Figure 11 and Figure 12 As can be seen from the elevated side view, the shelf support device 1 according to the invention has a generally box-shaped shape, which includes an upper surface 12c, a lower surface 12d, a front region 14 from which the pin 11 protrudes from its front surface 14a, and a pair of side surfaces 12e, and includes the one or more protruding elements 13 protruding outward from the side surfaces 12e of the box-shaped body 12.

[0064] The one or more protruding elements 13 advantageously protrude outward toward the side surface 12e, at least corresponding to the front region 14 of the box-shaped body 12.

[0065] The one or more protruding elements 13 preferably have a substantially triangular profile in the transverse plane so as to have a shape that facilitates the insertion of the shelf support 1 into the seat 201 formed in the shelf 200 by means of interference. It is advantageous to force the device into the seat such that the protruding elements themselves form their own seats in the shelf, which is usually made of wood, as happens when a self-tapping screw is inserted.

[0066] For this purpose, the one or more protruding elements 13 may have a larger extension in the lateral direction corresponding to the front region 14 of the box-shaped body 12, and taper in the lateral direction toward the rear region of the device opposite to the front region 14, thereby reducing their overall size. This facilitates the insertion of the shelf bracket into the seat 101 and the formation of a seat for the protruding elements 13.

[0067] Therefore, the shelf bracket 1 can be securely connected to the seat 201 without interference.

[0068] To allow for optimal force release, the protruding element is preferably sized to have a certain extension relative to the device; in fact, it is obvious that an excessively small protruding element will not allow for optimal force release.

[0069] In this sense, in the front cross section and considering the measurement along a measuring line starting from the center of the pin and reaching the end of the protruding element, the ratio between the size of the protruding element and the size of the body (both measured along said measuring line) is preferably in the range of about 1 to 5 and from 1 to 10; more preferably, if the cross section of the device is circular, the above ratio is about 1 to 5, and if the cross section is substantially elliptical, the above ratio is about 1 to 10.

[0070] According to a first preferred embodiment of the invention, the box-shaped body 12 of the shelf support device 1 advantageously has a profile that is substantially symmetrical with respect to a horizontal plane of symmetry, and the one or more protruding elements 13 protrude outward from the side surface 12e of the box-shaped body 12 substantially corresponding to the horizontal plane of symmetry.

[0071] In this way, the force transmitted from pin 11 to shelf bracket 1 is released onto the shelf through these protruding elements 13, such as... Figure 17 As indicated by the arrow Rr (resultant force of the shelf), in the region of the shelf where the shelf support 1 has a solid portion with maximum thickness, and no longer corresponds to the upper region of the seat 101 where the material thickness decreases, as shown... Figure 16 As is the case with the known apparatus shown.

[0072] According to a second preferred embodiment of the invention, for example in Figure 18 As can be seen, the shelf support device 1' may have one or more protruding elements 13, which extend outward from the side surface 12e of the body 12' below an ideal horizontal plane of symmetry.

[0073] Furthermore, according to a third preferred embodiment of the invention, for example in Figure 19As can be seen, the shelf support device 1" may have a generally cylindrical body 12" and advantageously have one or more protruding elements 13 that project laterally outward from the body 12".

[0074] More preferably, in order to better distribute the force transmitted from the shelf support to the shelf, the one or more protruding elements 13 extend along the entire length of the side surfaces 12e, 12e', 12e" of the bodies 12, 12', 12" and preferably taper from the front region of the device toward the rear region, as already mentioned.

[0075] The shelf support devices 1', 1" according to the invention advantageously have a body 12', 12" which has a generally "flat" elliptical profile in cross-section, i.e., in which the lateral side has a straight portion.

[0076] As described above, this structure is one of the preferred structures because it allows insertion into the seat 201 formed in the shelf 200 through a simple milling operation.

[0077] The box-shaped bodies 12, 12', 12" preferably include upper surfaces 12c, 12c', 12c" with bevels, for example in... Figure 5 It is clearly visible that, in use, when the device is inserted into the seat 201 which has a generally elliptical cross-section obtained by milling, the upper surfaces 12c, 12c', 12c" of the bodies 12, 12', 12" do not contact the upper inner wall 201' of the receiving seat 201.

[0078] The results obtained when the device is inserted into the seat formed in the shelf are... Figure 17 As can be seen, the distance d between the upper surfaces 12c, 12c', 12c" of the main bodies 12, 12', 12" of the devices 1, 1', 1" and the upper inner surface 201' of the receiving seat 201 formed in the shelf 200 can be seen.

[0079] According to the accompanying drawings, which show a non-limiting embodiment, the main body 12 of the shelf support device 1 according to the invention includes a base 12b that internally defines a seat 21 for receiving actuating devices 15, 16, 17 of pins 11, and a cover 12a adapted to close the base 12b from above.

[0080] According to a preferred embodiment of the shelf support device 1 of the present invention shown in the accompanying drawings, the box-shaped body 12 includes an opening seat 14' corresponding to the front region 14 having a solid portion and corresponding to the lower surface 12d of the box-shaped body 12 and adapted to receive a T-nut 18.

[0081] The nut 18 includes a body 18a and a base 18b. The body 18a has a through hole 18d for the pin 11 to pass through, and the base 18b defines two flaps 18c that project laterally relative to the body 18a.

[0082] When the device is assembled, the body 18a of the nut 18 is inserted into the seat 14', while the flaps 18c of the base 18 abut against the box-shaped body 12.

[0083] exist Figure 17 This can be seen very clearly in the image, where the resultant force released through the nut 18 when the resultant force Rp is applied to the pin 11 is represented by the arrow Rd.

[0084] As can be seen, due to the presence of the T-nut 18 and the passage of the pin 11, when the device is in use, the force Rp acting on the pin 11 is transmitted to the front region 14 of the box-shaped body 12 with a solid portion.

[0085] The actuating devices 15, 16, and 17 of the pin 11 advantageously include an axial motion device 15 for the pin 11 and a motion conversion device 16. The axial motion device 15 can move along the longitudinal direction X of the pin 11, and the motion conversion device 16 is adapted to convert the rotational motion of the actuating tool into the translational motion of the axial motion device 15.

[0086] The axial movement device 15 of pin 11 advantageously includes a slider 15, which is connected to or integrally manufactured with the pin 11. The slider 15 further includes a longitudinal groove 15a and a shaped inner seat, and the motion conversion device includes a rotating element 16 having a substantially cylindrical body 16a and a cam-shaped element 16b connected to the body 16a.

[0087] The cylindrical body 16a of the rotating element 16 is rotatably inserted into the longitudinal groove 15a of the slider 15, and the cam-shaped element 16b interacts with the internal forming seat of the slider 15, allowing the operator to... Figure 2 The rotation of the body 16a of the rotating element 16, which is applied by a tool of the type shown in Figure 3, causes the slider 15 to move in the axial direction X.

[0088] The axial movement device 15 of pin 11 preferably further includes an elastic device associated with the slider 15, such as a helical spring 17, which is adapted to hold the slider 15 in the forward position and thus hold the pin 11 in its operating position. To retract the slider, and thus the pin, the action of the spring 17 must be overcome. This is achieved by simply rotating the rotating element 16 with a tool, which releases the cam 16b from its obstructed state in the non-operating position, thereby allowing the slider 15 to advance through the spring 17.

[0089] In the shelf support device 1 according to the invention, the slider 15 and the pin 11 are advantageously connected to each other by a form connection.

[0090] For illustrative and not limiting purposes, the invention has been described with reference to various preferred embodiments; however, it should be understood that those skilled in the art can apply variations and / or modifications without departing from the relative scope of protection defined in the appended claims.

Claims

1. A combination of a shelf support device (1, 1', 1") and a shelf of furniture, wherein a seat (201) for the device (1, 1', 1") is provided in the shelf, the seat being formed within the thickness of the shelf (200) of the furniture, wherein, The device (1, 1', 1") is configured to be inserted into the seat (201), and the shelf support device (1, 1', 1") is configured to reversibly connect the shelf (200) to a shoulder (300) of the furniture. The device includes a body (12, 12', 12") slidably associated with a connecting pin (11), the connecting pin (11) being movable between a first operating position and a second retracted position. In the first operating position, the connecting pin (11) protrudes from the shelf (200) to be inserted into a shoulder (300). In the receiving seat (301), in the second retracted position, the connecting pin (11) does not protrude from the shelf (200) or protrudes so as to be released from the receiving seat (301) under any circumstances. The receiving seat (201) is characterized in that the seat (201) has an elliptical or circular cross section, and the body (12, 12', 12") has a box-like form, including an upper surface (12c, 12c', 12c"), a lower surface (12d, 12d', 12d"), a front region (14) from which the connecting pin (11) protrudes from its front surface (14a), and a pair of side surfaces (12e, 12e', 12e"). The front region (14) has a solid portion and a shaped profile, the solid portion having a continuous front surface (14a) interrupted only by a hole through which the connecting pin (11) passes. The main body (12c") is cylindrical, comprising an inclined upper surface (12c"), a lower surface (12d"), and a side surface (12e"); or the main body (12c, 12c') has a flattened elliptical profile in cross-section, wherein the transverse sides have straight portions, and Viewed from the transverse plane, the device (1, 1', 1") has an inclined plane corresponding to a portion of its upper surface (12c, 12c', 12c''). The portion of the upper surface (12c, 12c', 12c'') of the body (12, 12', 12") extends over the entire length of the body (12, 12', 12") such that the portion of the upper surface (12c, 12c', 12c'') is spaced apart from the upper inner wall (201') of the seat (201) formed in the shelf (200) such that when the device is assembled to the shelf (200), the portion of the upper surface (12c, 12c', 12") of the body (12, 12', 12") does not contact the upper inner wall (201') of the seat (201) formed in the shelf (200) for the body (12, 12', 12").

2. The combination according to claim 1, characterized in that, The portion of the upper surface (12c, 12c', 12") of the main body (12, 12', 12") that is configured not to contact the upper inner wall (201') of the seat (201) formed in the shelf extends from its protruding front region corresponding to the connecting pin (11) of the shelf support device (1, 1', 1") 3. The combination according to claim 1, characterized in that, The body (12, 12', 12") includes one or more protruding elements (13) extending outward toward the body (12) on its outer surface.

4. The combination according to claim 3, characterized in that, The one or more protruding elements (13) protrude outward from the side surface (12e, 12e') of the body having a box-like form or from the side surface (12e") of the cylindrical body (12").

5. The combination according to claim 4, characterized in that, The one or more protruding elements (13) extend outward toward the side surface (12e, 12e', 12e") at least in correspondence with the front region (14) of the body (12, 12', 12") 6. The combination according to claim 5, characterized in that, The one or more protruding elements (13) have a triangular outline in the transverse plane.

7. The combination according to claim 3, characterized in that, The body (12, 12") has a profile symmetrical with respect to a horizontal plane of symmetry, and the one or more protruding elements (13) extend outward from the side surfaces (12e, 12e') of the body (12) corresponding to the horizontal plane of symmetry.

8. The combination according to claim 3, characterized in that, The body (12') includes one or more protruding elements (13) extending outward from the side surface (12e') of the body (12) positioned below an ideal horizontal plane of symmetry.

9. The combination according to claim 3, characterized in that, The one or more protruding elements (13) extend along the entire length of the side surfaces (12e, 12e', 12e") of the body (12, 12', 12").

10. The combination according to claim 3, characterized in that, The one or more protruding elements (13) have a larger lateral extension corresponding to the front region (14) of the body (12, 12', 12") and are tapered, thereby reducing the overall size of the one or more protruding elements in the lateral direction toward the rear region of the device (1, 1', 1") opposite to the front region (14).

11. The combination according to claim 1, characterized in that, The body (12) having a box-like form includes a base (12b) and a cover (12a), the base (12b) internally defining a seat for receiving an actuation device (15, 16, 17) of the connecting pin (11), and the cover (12a) being adapted to close the body (12) from above.

12. The combination according to claim 1, characterized in that, The body (12, 12') having a box-like form includes a seat (14') corresponding to the front region (14) having a solid portion, the seat (14') opening on the lower surface (12d, 12d') of the body (12, 12') and adapted to receive a T-nut (18), the T-nut including a body (18a) and a base (18b), the body (18a) being provided with a through hole (18d) for a connecting pin (11) to pass through, and the base (18b) defining two flaps (18c) that project laterally relative to the body (18a).

13. The combination according to claim 12, characterized in that, When the device is assembled, the body (18a) of the T-nut (18) is inserted into the seat (14'), and the two flaps (18c) of the base (18b) abut against the body (12, 12"), such that when the device is in use, the force acting on the connecting pin (11) is transmitted through the T-nut (18) to the body (12, 12") of the corresponding front region (14) with a solid portion.

14. The combination according to claim 11, characterized in that, The actuating device (15, 16, 17) of the connecting pin (11) includes an axial motion device (15) of the connecting pin (11) capable of moving along the axial motion direction (X) of the connecting pin (11) and a motion conversion device (16) adapted to convert the rotational motion of the actuating tool into the translational motion of the axial motion device (15).

15. The combination according to claim 14, characterized in that, The axial movement device (15) of the connecting pin (11) includes a slider connected to or integrally formed with the connecting pin (11), the slider including a longitudinal groove (15a) and a shaped inner seat, and the motion conversion device (16) includes an element having a cylindrical body (16a) and a cam-shaped element (16b) connected to the body (16a), the body (16a) of the element being rotatably inserted into the longitudinal groove (15a) of the slider, and the cam-shaped element (16b) interacting with the inner shaped seat of the slider, such that the body (16a) of the element causes the slider to move in the axial direction by means of the rotation of the tool.

16. The combination according to claim 15, characterized in that, The axial movement device (15) of the connecting pin (11) also includes an elastic device (17) associated with the slider, the elastic device (17) being adapted to hold the slider in the forward position and thus hold the connecting pin (11) in its operating position.

17. The combination according to claim 15, characterized in that, The slider and the connecting pin (11) are connected to each other by a shape connection.

18. A shelf support device (1, 1', 1") configured for use in any one of claims 1-17.

Images