Drilling jig and method for mounting a fitting by means of a drilling jig

Abstract

The invention relates to a drilling jig (1) comprising a box-shaped housing (2) having an interior (8) and at least one drilling channel (4) which passes through the housing (2) and which has an opening (9) to the interior (8) of the housing (2), with a stop element (3) movably mounted on the housing (2). Thus a fitting part can be mounted precisely and quickly via the drilling jig (1). The invention also relates to a mounting method using the drilling jig.

Description

[0001] Drilling jig and method for mounting a fitting using a drilling jig

[0002] The present invention relates to a drilling jig with a box-shaped housing having an interior and at least one drilling channel passing through the housing, which has an opening to the interior of the housing, and to a method for mounting a fitting with a drilling jig.

[0003] German patent application DE 20 2007 002 845 U1 discloses a drilling template in which several openings are formed through which a machining tool can be inserted. Each opening has a channel with an opening, allowing air to be extracted from the openings via an attached extraction system, thus enabling the extraction of chips through the drilling template. The drilling template is therefore used in conjunction with the extraction system, which is complex during assembly. Furthermore, there is no movable stop to align the drilling template relative to other components.

[0004] US Patent 9,199,314 B1 discloses a drilling template in which a stop is movable relative to a U-shaped component. This allows the stop to be aligned relative to the U-shaped component, and a machining tool can be inserted through corresponding openings. Chips generated during machining are not collected, which can be a disadvantage, especially when installing cooling units in cabinet furniture, if chips strike elastic seals and contaminate or damage them, impairing their function.

[0005] It is therefore an object of the present invention to provide an improved drilling jig and a method for mounting a fitting in which the disadvantages described above can be avoided.

[0006] The drilling jig according to the invention comprises a box-shaped housing with an interior and at least one bore channel extending through the housing, which has an opening to the interior of the housing. At least one stop element is movably mounted on the housing. The housing can be aligned relative to another element, for example, a furniture carcass, by means of the at least one stop element, so that the housing can then be positioned at a predetermined distance from another point on the furniture carcass. The movable stop element can thus be used to align the housing. The housing includes an interior in which chips generated during machining can be collected, and the chips can be discharged into the housing through the opening in the at least one bore channel.The collection of the chips can be done without an extraction system, although such an extraction system can be provided as an option.

[0007] Preferably, the at least one bore channel is tubular and includes at least one pipe stub that projects at least partially into the interior of the housing. Preferably, the tube channel has two pipe stubs spaced apart at their free ends, creating an annular opening between them. During machining, for example drilling, the chip can then be moved axially along the drill bit until it reaches the annular opening in the bore channel, at which point the chip can be discharged into the interior of the housing. This prevents environmental contamination during assembly when using the drilling jig. The housing preferably has at least one discharge opening, optionally closable, which can be used as a chip outlet.

[0008] For precise alignment of the housing, at least one stop element can be clamped or snapped into place on the housing. For this purpose, the stop element can have a rib that can be inserted into a receptacle in the housing. The receptacle preferably extends at least partially into the interior of the housing, and more preferably penetrates the interior. The receptacle for the rib is designed to be closed off from the interior of the housing intended for chip collection, in order to prevent chips from escaping through the receptacle. Optionally, several ribs or guide elements of the stop element can be inserted into the housing, or at least one rib can be guided on the outside of the housing, for example, by a groove or a guide rib.The bridge on the stop element preferably protrudes substantially perpendicular to an axial direction of the at least one bore channel in the housing and can accordingly be inserted into the housing.

[0009] For easy fixation of the stop element, the housing can have at least one flexible locking tab, preferably integral, which can be locked onto a profiled section of the tab. The profiled section can be, for example, toothed or knurled. It is also possible for the profiled section to be located on the housing and the flexible locking tab on the stop element. The profiled section allows the stop element to be adjusted within a range of 2 mm to 10 mm, preferably between 4 mm and 8 mm.

[0010] To ensure the stop element is securely attached to the housing, the profiled element features a raised detent that rests against the flexible detent bar but cannot be overcome in one direction. The detent has a chamfer on one side to allow the flexible detent bar to overcome it during initial assembly of the stop element to the housing. The raised detent acts as a safeguard against the detent bar of the stop element being pulled out.

[0011] The stop element preferably has a stop plate that is oriented perpendicular to the bridge. The stop plate can project beyond the housing on opposite sides parallel to the drill channel, thus having a greater length along the longitudinal extent of the at least one drill channel. This allows the stop plate to be aligned, for example, with a front edge of a furniture carcass when the housing is positioned on an inside side panel. This facilitates easy handling when aligning the housing. Due to the symmetrical design of the stop plate relative to the bridge or the housing, the drilling jig can be used for both right and left side panels of a furniture carcass. To prevent damage to the side panels from the drilling jig, elastic, particularly rubberized, contact surfaces can advantageously be provided on both sides of the housing, on the surfaces with the drill channels.Another advantage of these rubberized contact surfaces is improved grip of the drilling jig on the side wall, making it more difficult for the drilling jig to slip accidentally.

[0012] Each bore channel contains at least one sleeve-shaped metal insert. This prevents or reduces damage to the bore channel when using cutting tools, such as drills. The bore channel preferably has a length between 10 mm and 50 mm, particularly between 16 mm and 30 mm. The length of the bore channel is preferably selected to limit the drilling depth of a drill bit; in particular, a drill bit can strike the housing before completely penetrating a furniture panel. This increases safety during assembly.

[0013] The housing preferably has several drill holes. These drill holes can determine the orientation of the fitting on the furniture or device. For example, a fitting, such as a hinge, can be aligned horizontally or slightly inclined to the horizontal, for example at an angle between 1° and 5°, by appropriately positioning the drill holes. This can be advantageous for optimized load distribution.

[0014] The width of the housing is adapted to a parameter for mounting the fitting, e.g., an installation depth. The adjustability of the mounting element relative to the housing allows for tolerance compensation.

[0015] In an advantageous embodiment, the drilling jig can include an additional element. This additional element can be detachably attached to the housing to achieve a fixed change in the housing's dimensions in a specific spatial direction. In one possible embodiment, the additional element is designed as a clamp that can be detachably fixed to the housing. The additional element can be held in place by undercuts to the housing and, for example, pre-tensioned by a spring action of the additional element's material. This allows the drilling jig to be used in a wider variety of applications, particularly when several common but fixed dimensions are used for a fitting for which the drilling jig is used. One such dimension could be, for example, the installation depth.

[0016] In a further embodiment, the additional element can also be used as a sealing cover for the chip outlet to prevent uncontrolled emptying during use.

[0017] The various components – housing, stop element, and additional element – ​​are specifically designed for particularly advantageous production using additive manufacturing processes, such as 3D printing. However, it is also possible, for example, to manufacture the housing in two parts using an injection molding process and then join them together in a second step.

[0018] In a method for mounting a fitting using a drilling jig according to the invention, the stop element can be aligned relative to the housing on already mounted furniture or appliance parts. The stop element can then be aligned on a front end face of a side panel of a furniture carcass when the housing is in contact with an appliance part. The drilling jig can then be positioned on the furniture carcass using the stop element, for example, offset vertically from the already mounted fitting parts or furniture / appliance parts. At least one hole is then drilled using the drilling jig, through which a drill bit is passed. This process can be repeated, depending on the design of the fitting, until the required number of holes have been produced. The fitting can then be mounted using the at least one drilled hole.The drilling jig allows for effective pre-setting of the alignment and positioning of the fitting to be mounted. Furthermore, the use of two stop elements enables precise positioning on or in furniture corners and along edges.

[0019] Preferably, several holes are drilled using a drilling jig. This allows the fitting to be aligned in the desired position relative to the furniture body. For a hinge, the alignment of the pivot axes can be either vertical or slightly inclined to the vertical, depending on the desired installation position.

[0020] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawings. These show:

[0021] Figures 1A to 1C show several views of a drilling jig according to the invention;

[0022] Figure 2 is an exploded view of the drilling jig of Figure 1;

[0023] Figures 3A and 3B show two views of the housing of the drilling jig, partly in section;

[0024] Figures 4A to 4E show several sectional views through the drilling jig of Figure 1 at different positions; Figure 5 shows a perspective view of the stop element;

[0025] Figure 6 shows an enlarged rear view of the drilling jig from Figure 1;

[0026] Figure 7 shows a perspective view of the drilling jig of Figure 1 with an additional element;

[0027] Figure 8 shows a perspective view of the clamp on the drilling jig of Figure 7, and

[0028] Figures 9A to 9C show several views during the assembly of a hinge using the drilling jig.

[0029] A drilling jig 1 comprises a box-shaped housing 2 and a stop element 3 that is movable relative to the housing 2. One or more drill channels 4, which are essentially tubular and open on opposite sides of the housing 2, pass through the housing 2. Optionally, the housing 2 can be made in one piece or composed of two detachably connected housing shells to facilitate emptying of the interior.

[0030] Figures 1B and 1C show two different positions of the stop element 3 relative to the box-shaped housing 2. The stop element 3 can be positioned at different distances relative to the housing 2, for example by means of clamping or locking the stop element 3.

[0031] Figure 2 shows an exploded view of the drilling jig 1. A metallic insert 5 is inserted into each bore channel 4, comprising a radially projecting flange 20 and a sleeve-shaped section 21. The tubular bore channel 4 includes a pipe stub 41 projecting into the interior of the housing 2, which is lined by the sleeve-shaped section 21. An annular receptacle 40 for the radially projecting flange 20 is also formed on the bore channel 4, so that it is essentially flush with an outer surface of the housing 2. Perpendicular to the longitudinal direction of the bore channels 4, a receptacle 7 for inserting a web 31 on the stop element 3 is formed. The receptacle 7 is slot-shaped and adapted to the essentially rectangular cross-sectional contour of the web 31.The stop element 3 comprises, in addition to the bridge 31, a stop plate 30, which is longer than the housing 2 in the direction of the bore channels 4, so that the stop plate 30 projects beyond the housing 2 on opposite sides. Next to the bore channels 4, recesses are formed on the housing 2 into which contact elements 6 are inserted, e.g., glued. These contact elements 6 prevent damage to the surface of the object being machined when the housing 2 is in contact with it.

[0032] For mounting the stop element 3, the web 31 can be inserted into the receptacle 7. The web 31 has a profile 32 and a raised detent 33, which can only be overcome in one direction during assembly to prevent the stop element 3 from being pulled out of the housing 2. The raised detent 33 thus forms a limiting element, which has a chamfer on one side to allow the detent to be overcome during the initial assembly of the stop element 3 onto the housing 2.

[0033] Figures 3A and 3B show the housing 2 without the stop element 3, and it can be seen that the housing 2 has an interior space 8 into which the pipe stubs 41 project on opposite sides of a bore channel 4. The pipe stubs 41 are shorter than the bore channels 4, so that the free ends of the pipe stubs 41 are spaced apart, forming an annular opening 9 between the two pipe stubs 41. This allows the chip to be guided through the insert 5 and the pipe stub 41 to the annular opening 9 during machining, for example with a drill, and then fall into the interior space 8 of the housing 2, preventing it from contaminating the surrounding area. The sleeve-shaped section 21 has almost the same axial length as the pipe stub 41. The geometric design of the receptacle 7 within the interior space 8 is also advantageous in this context.The recess 7 forms a channel closed off from the interior 8, the outer walls of which are rounded or lenticular within the interior 8. This prevents falling chips from being impeded or aggregated and allows them to be collected in the lower area of ​​the drilling jig 1.

[0034] Figures 4A to 4E show the housing 2 in several sectional views. Figure 4B shows the mounting position of the stop element 3, in which the web 31 with the profile 32 is received in the housing 2. A detent web 11, preferably integral with the housing 2, engages with the profile 32 in a detent connection, so that the stop element 3 is held in a predetermined position relative to the housing 2. The limiting element 33, as shown in Figure 4E, prevents the stop element 3 from being accidentally pulled completely out of the housing 2. The profile can extend over a length of 2 mm to 10 mm, preferably 4 mm to 8 mm, on the web to compensate for tolerances over this length.

[0035] Figure 5 shows the stop element 3 in detail, which has the stop plate 30 forming a plane from which the web 31 projects essentially perpendicularly. Optionally, it is possible to provide several webs 31 on the stop element 3, which engage in corresponding receptacles 7 on the housing 2.

[0036] Figure 6 shows an enlarged rear view of the housing 2 with the stop element 3. The drill channels 4 can optionally be designed so that they are oriented perpendicular to the plane of the stop plate 30. However, it is also possible to align the housing 2 with its vertical sides at a slight angle to the vertical, for example, at an angle α that can be between 1° and 10°, in particular between 2° and 5°. This barely visible inclination on the longitudinal sides results in a parallelogram-like shape of the housing 2. This creates a slight vertical offset of the drill channels 4 when the housing rests against a vertical contact surface of a furniture or appliance body. As a result, a fitting can be mounted not exactly horizontally or vertically, but at a slight angle. In the case that the drilling jig 1 has an inclination, the web 31 and the stop plate 30 form an angle in the vertical direction that deviates from 90°.

[0037] In the center of the housing 2, on the side facing away from the stop element 3, an opening 10 is provided, which can be used as a chip outlet. Chips that fall into the interior during machining can be emptied through this opening 10. Optionally, a dust extraction system can also be connected to this opening 10.

[0038] Figure 7 shows the drilling jig 1 with the housing 2 and the stop element 3 together with an additional element, here designed as a clamp 12, which grips the housing 2 in a U-shape. For this purpose, the clamp 12 has an upper leg 13 and a lower leg 13, which are connected to each other by a connecting web 14. On the inwardly facing side of the legs 13, a projection 15 is provided, which engages in a corresponding recess or receptacle 22 on the housing 2. The interaction of the receptacle 22 with the projection 15 creates an undercut. In addition, the legs 13 of the clamp 12 can be pre-tensioned against each other, and the clamp 12 can be mounted on the housing 2 by slightly expanding it, so that the pre-tensioning of the clamp 12 strengthens the connection to the housing 2.This detachably fixed clamp 12 allows the distance between the housing 2 and another component to be changed, for example because there are different installation positions for fittings.

[0039] Figure 8 shows in detail the clamp 12, which can be attached to the housing 2 as a simple additional element.

[0040] The function of the drilling jig 1 can be explained with reference to Figures 9A to 9C. This embodiment shows the installation of a household appliance, in particular a refrigerator, in a furniture carcass. A furniture carcass 50 serves to hold a schematically depicted appliance carcass 52 of a refrigerator. Two hinges 54 are fixed to the appliance carcass 52 and / or the side wall of the furniture carcass 50 and serve to pivot a furniture door 51, to which an appliance door 53 is attached. Especially for heavy appliance doors 53, it can be advantageous to mount an additional guide hinge between the side wall of the furniture carcass 50 and the furniture door 51. The drilling jig 1 according to the invention can be used for this purpose. In a first step, it is placed against a front edge of a side wall of the appliance carcass 52 with the housing 2. The stop element 3 now protrudes from a front end face of the side wall of the furniture carcass 50.

[0041] As shown in Figure 9B, the stop element 3 with the bridge 31 is now inserted into the housing 2 until a section of the stop plate 30 rests against the front end face of the side wall of the furniture body 50.

[0042] This means that the distance between the front of the device body 52 and the front end face of the side wall is stored in the drilling jig 1.

[0043] In the next step, the drilling jig 1 is removed and positioned above the device body 52 as shown in Figure 9C, with the stop element 3 again being placed against the front end face of the side wall so that the stop plate 30 rests against it. In this position, the side wall of the furniture body 50 can now be provided with one or more drill holes to mount another guide hinge. This guide hinge can connect the side wall of the furniture body 50 to the furniture door 51 in order to absorb some of the weight of the furniture door 51.

[0044] The drilling jig 1 can thus be used for mounting a guide hinge, as disclosed in DE 10 2024 127 276 entitled "Furniture and method for mounting a door on a furniture carcass". The guide hinge can be mounted on the side wall of the furniture carcass 50 such that, in the unloaded mounting position, the pivot axes of the multi-joint mechanism are slightly inclined to the vertical, for example at an angle between 1° and 5°, so that the hinge protrudes slightly upwards towards the furniture door 51. By clamping the hinge part to the furniture door 51 via an adjustment device, the guide hinge can then be pre-tensioned to bear a portion of the weight load. The orientation of the drill holes determines the position of the guide hinge, which can be easily achieved with the drilling jig 1 according to the invention.

[0045] Reference symbol list

[0046] 1 Drilling jig

[0047] 2 cases

[0048] 3 Stop element

[0049] 4 borehole

[0050] 5 deployment

[0051] 6 Plant element

[0052] 7th recording

[0053] 8 Interior

[0054] 9 Opening

[0055] 10 Opening

[0056] 11 Resting Footbridge

[0057] 12 bracket

[0058] 13 thighs

[0059] 14 Connecting bridge

[0060] 15 lead

[0061] 20 flange

[0062] 21 sleeve-shaped section

[0063] 22nd recording

[0064] 30 Stop plate

[0065] 31 Bridge

[0066] 32 Profiling

[0067] 33 increased resting level

[0068] 40 recordings

[0069] 41 pipe fittings

[0070] 50 furniture carcasses

[0071] 51 Furniture door

[0072] 52 Device housing

[0073] 53 Device door

[0074] 54 hinge a angle

Claims

Claims 1. Drilling jig (1) with a box-shaped housing (2) with an interior (8) and at least one bore channel (4) through the housing (2), which has an opening (9) to the interior (8) of the housing (2), characterized in that at least one stop element (3) is movably mounted in a receptacle (7) on the housing (2), wherein the receptacle (7) extends at least partially into the interior (8).

2. Drilling jig according to claim 1, characterized in that the at least one drilling channel (4) is tubular and protrudes at least partially into the interior (8) of the housing with at least one pipe stub (41).

3. Drilling jig according to claim 2, characterized in that the drilling channel (4) comprises two pipe stubs (41 ) which are arranged at a free end apart from each other and form the annular opening (9) between them.

4. Drilling jig according to one of the preceding claims, characterized in that the stop element (3) can be clamped or snapped to the housing (2).

5. Drilling jig according to one of the preceding claims, characterized in that the stop element (3) has a bridge (31) which can be inserted into the receptacle (7) of the housing (2).

6. Drilling jig according to claim 5, characterized in that the web (31 ) can be inserted into the housing (2) perpendicular to an axial direction of the at least one drilling channel (4).

7. Drilling jig according to claim 5 or 6, characterized in that at least one bendable locking tab (11 ) is formed on the housing (2) which can be locked onto a profile (32) of the tab (31 ).

8. Drilling jig according to one of claims 5 to 7, characterized in that the stop part (3) has a stop plate (30) which is aligned perpendicular to the web (31).

9. Drilling jig according to claim 8, characterized in that the stop plate (30) projects beyond the housing (2) on opposite sides parallel to the drilling channel (4).

10. Drilling jig according to one of the preceding claims, characterized in that at least one sleeve-shaped insert (5) made of metal is provided at each drill channel (4).

11. Drilling jig according to one of the preceding claims, characterized in that the at least one drilling channel (4) has a length between 10 mm and 50 mm, in particular between 16 mm and 30 mm.

12. Drilling jig according to one of the preceding claims, characterized in that the drilling jig (1 ) comprises an additional element, preferably a clamp (12), which can be detachably fixed to the housing (2).

13. Drilling jig according to one of the preceding claims, characterized in that the stop element (3) can be detented on the housing (2) via an adjustment path with a length of 2 - 10mm, preferably 4 - 8mm.

14. Drilling jig according to one of the preceding claims, characterized in that the receptacle (7) is designed to be closed to the interior (8).

15. Method for mounting a fitting with a drilling jig (1) according to one of the preceding claims, comprising the following steps: - Aligning the housing (2) with an end face of a side wall of a device housing (52) already mounted in a furniture body (50); - Insert the stop element (3) relative to the housing (2) until the stop plate (30) rests against an end face of a side wall of a furniture body (50); - Positioning the drilling jig (1 ) over the stop element (3) on a furniture body (50) in a position shifted vertically to the device body (52); - Drilling at least one borehole by passing a drilling tool through the at least one bore channel (4) in the housing (2), and - Mounting the fitting at the at least one drilled hole.

16. Method according to claim 15, characterized in that several boreholes are drilled with the drilling jig (1 ) on which the fitting is fixed.

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