Replaceable threaded seat

Abstract

The invention relates to an exchangeable threaded seat (8) for a housing (1) and a cover (2) for closing the housing (1), the cover (2) having one or more receptacles (3) for each fastening screw (4), the housing (1) having a number of lugs (5) corresponding to the number of receptacles (3), each lug being aligned with one of the receptacles (3) when the cover (2) is mounted on the housing (1) in a closed position, and the cover (2) being provided with a plurality of fastening screws (4). The lug (5) is designed as a hollow structure for receiving the exchangeable threaded seat (8), the lug (5) is provided with a bearing geometry (7) in the interior thereof, and the exchangeable threaded seat (8) has a bearing geometry (9) complementary to the lug and a hole (10) for receiving the fastening screw (4), the bearing geometry (7) of the lug (5) and the bearing geometry (9) of the exchangeable threaded seat (8) are configured to engage with each other such that the exchangeable threaded seat (8) inserted in the lug (5) is held in a position in which the hole (10) is aligned with the hole (21) of the corresponding receptacle (3) when the cover (2) is fitted onto the housing (1) in the closed position.

Description

Technical Field

[0001] The invention relates to an exchangeable threaded seat according to the preamble of claim 1 and a device according to claim 6 . Background Art

[0002] In the prior art, it is known to mount a cover on a housing designed for a replacement part by means of a screw connection, thereby enabling multiple opening and closing. This is disclosed, for example, in filter housings for filter elements such as air filters.

[0003] The known closure concepts have the following problems: the holes in the housing for the self-tapping screws wear out after repeated screwing. Installing a metal insert in the housing increases the cost of the housing. Furthermore, the metal insert can be damaged by incorrect installation, necessitating replacement of the housing.

[0004] US 2012 / 0274092 A1 describes a clamping structure for a pickup truck bed cover, which is mounted on a frame portion of the bed cover and is used to detachably fix the frame portion to the side wall of the pickup truck's cargo area. The clamping structure has a composite handle member, including a metal handle body and a plastic sleeve. The metal handle body has a joint portion for firmly engaging with the side wall of the pickup truck. The plastic sleeve has a first docking flange, which smoothly abuts against the rotating handle, and a second docking end, which is arranged toward the slider. Therefore, the composite handle member can provide the advantages of both metal and plastic materials, thereby improving the operational stability and reliability of the clamping structure and extending its service life. Summary of the Invention

[0005] The object of the present invention is to specify a novel closure concept for mounting a cover on a housing.

[0006] According to the invention, this object is achieved by an exchangeable threaded seat according to claim 1 and a device according to claim 6 .

[0007] Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0008] According to the present invention, a replaceable threaded seat for a housing and a cover for closing the housing is proposed, wherein the cover has one or more receptacles (Sitz) for each fastening screw, wherein the housing has a number of lugs (Erker) corresponding to the number of receptacles, and when the cover is mounted on the housing in the closed position, the lugs are each aligned with one of the receptacles, wherein the lugs are formed as a hollow structure to accommodate the replaceable threaded seat and have a supporting geometry provided in their interior, wherein the replaceable threaded seat has a supporting geometry complementary to the lugs and a hole for receiving the fastening screw, wherein the supporting geometry of the lugs and the replaceable threaded seat is configured to engage with each other, so that when the cover is mounted on the housing in the closed position, the replaceable threaded seat inserted into the lugs is held in a position in which the hole is aligned with the hole of the corresponding receptacle.

[0009] In one embodiment, the replaceable threaded seat has a cylindrical body or a body with another cross-sectional shape, with the holes concentrically arranged in the body.

[0010] In one embodiment, the support geometry of the exchangeable threaded seat has at least one boss, which is configured to engage with a respective boss track, which is part of the support geometry of the lug, so that when the exchangeable threaded seat is inserted into the lug, the leading end / protruding end of the exchangeable threaded seat is guided towards the wall of the lug, so that the exchangeable threaded seat rests against the wall.

[0011] In one embodiment, the lug wall against which the replaceable threaded seat abuts faces away from the housing.

[0012] In one embodiment, the projection is part of a plane which completely or partially penetrates the main body in the form of a diagonal cut.

[0013] In one embodiment, a radially protruding protrusion is provided at the tail end of the replaceable threaded seat opposite to the leading end. When the replaceable threaded seat is inserted into the lug, when the replaceable threaded seat is against the wall, the protrusion engages with the inner stop surface of the lug, and the inner stop surface is opposite to the wall.

[0014] In one embodiment, the protrusions and / or bosses are rounded in design.

[0015] According to one aspect of the present invention, a device is proposed, comprising a housing and a cover for enclosing the housing, wherein the cover has one or more receptacles for each fastening screw, wherein the housing has a number of lugs corresponding to the number of receptacles, and when the cover is mounted on the housing in the closed position, the lugs are each aligned with one of the receptacles; the device also includes one or more interchangeable threaded seats as described above, corresponding to the number of lugs.

[0016] In one embodiment, the width of the support geometry of the replaceable threaded seat and the width of the lug are selected such that the replaceable threaded seat is received in the lug with little or no play and / or a recess complementary to the main body is provided in the lug.

[0017] In one embodiment, the upper end of the lug wall is provided with an upper stop surface which limits the axial movement of the replaceable threaded seat from the lug until a point at which the projection disengages from the inner stop surface, allowing the tail end to move away from the wall so as to be guided past the upper stop surface.

[0018] In one embodiment, the housing is configured to receive a replacement part, such as a filter element, in particular an air filter.

[0019] In one embodiment, the refill has a projection which, when the refill is inserted into the housing, abuts against and continues the inner stop surface towards the cover.

[0020] The housing as well as the cover and the replacement part can be part of a motor vehicle, in particular a commercial vehicle, for example.

[0021] According to the present invention, a replaceable threaded seat with a threaded hole is inserted into the housing and positioned in the housing so that the threaded hole is axially aligned with the fastening screw on the cover. When the fastening screw is tightened, the replaceable threaded seat is supported on the housing, and the fastening screw can firmly connect the cover to the housing.

[0022] If the threaded hole of the replaceable threaded seat is worn, only the replaceable threaded seat can be replaced without replacing the entire housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The embodiments of the present invention will be explained in detail below with reference to the accompanying drawings, in which:

[0024] Figure 1 is a schematic diagram of a housing and a cover for closing the housing,

[0025] Figure 2 is a schematic cross-sectional view of a receptacle for fastening screws,

[0026] Figure 3 is a schematic cross-sectional view of the lug on the housing.

[0027] Figure 4 This is a schematic diagram of a replaceable threaded seat.

[0028] Figure 5 This is a diagram of the interchangeable threaded seat and lugs before insertion.

[0029] Figure 6 This is a schematic diagram of the lug when inserted into the interchangeable threaded seat.

[0030] Figure 7 This is a diagram of the lug and the inserted replaceable threaded seat.

[0031] Figure 8 is a schematic diagram of the housing, including the replaceable threaded seat inserted into the lug and the replacement part inserted into the housing,

[0032] Figure 9 is a schematic diagram of a housing including a replaceable threaded seat inserted into a lug and a replacement piece inserted into the housing and a cover fitted onto the housing.

[0033] Figure 10 is a schematic diagram of a housing, comprising a replaceable threaded seat inserted into a lug, a replacement inserted into the housing, and a cover fitted onto the housing, wherein a fastening screw is screwed into a hole in the replaceable threaded seat through a hole in the receptacle.

[0034] Figure 11 This is a schematic diagram of the housing when the fastening screw is further screwed in, including the replaceable threaded seat inserted into the lug and the replacement part inserted into the housing and the cover mounted on the housing.

[0035] Figure 12 is a schematic diagram of an alternative embodiment of a replaceable threaded seat,

[0036] Figure 13 is a schematic diagram of another alternative embodiment of the replaceable threaded seat,

[0037] Figure 14 is a schematic diagram of another alternative embodiment of the replaceable threaded seat,

[0038] Figure 15 Schematic diagram of another alternative embodiment of the replaceable threaded seat.

[0039] Corresponding parts are provided with the same reference numerals in all the figures. DETAILED DESCRIPTION

[0040] Figure 1 The schematic diagram shows a housing 1 and a cover 2 that closes the housing 1. The housing 1 is particularly configured to receive replacement parts, such as filter elements, in particular air filters. The cover 2 can be fastened to the housing 1 by means of a screw connection, thereby enabling multiple closing and opening.

[0041] The housing 1 as well as the cover 2 and the replacement part can be, for example, part of a motor vehicle, in particular a commercial vehicle.

[0042] The cover 2 has one or more receptacles 3 for each fastening screw 4 , in particular the screw head 6 of the fastening screw 4 . Figure 2is a schematic cross-sectional view of one of the receptacles 3. In particular, the cover 2 has two, three, four, or more receptacles 3. The housing 1 has lugs 5, in particular a number corresponding to the number of receptacles 3. These lugs are, for example, provided on the outside of the housing 1 and are each aligned with one of the receptacles 3 when the cover 2 is correctly mounted on the housing 1. Figure 3 1 is a schematic cross-sectional view of one of the lugs 5. The lug 5 is a hollow structure and has a support geometry 7 inside thereof, which is configured to position a replaceable threaded seat 8. Figure 4 Schematic diagram of a replaceable threaded seat 8. The replaceable threaded seat 8 has a support geometry 9 that is complementary to the support geometry 7 of the lug 5.

[0043] Figure 4 The replaceable threaded seat 8 shown has a cylindrical body 30 with a concentric hole 10 configured to receive a fastening screw 4. The fastening screw 4 can in particular be a self-tapping screw, wherein the hole 10 and the fastening screw 4 are dimensioned such that the thread 22 of the fastening screw 4 (e.g. Figure 10 When screwed into the hole 10 , the screw (as shown) penetrates into the wall of the hole 10 .

[0044] The support geometry 9 of the replaceable threaded seat 8 has, for example, at least one boss 11 which is configured to engage with a respective one of the boss tracks 12 which are part of the support geometry 7 of the lug 5 so that, when the replaceable threaded seat 8 is inserted into the lug 5 , the leading end 13 of the replaceable threaded seat 8 is guided towards a wall 14 of the lug 5 until the replaceable threaded seat 8 comes to rest against the wall 14 . Figure 5 It is a schematic diagram of the lug 5 and the replaceable threaded seat 8 before insertion. Figure 6 Schematic diagram of the lug 5 when inserted into the interchangeable threaded seat 8 , wherein the boss 11 engages with the boss track 12 and the leading end 13 is guided towards the wall 14 . Figure 7 The diagram shows a lug 5 with an inserted replaceable threaded seat 8, which abuts against a wall 14. For example, the replaceable threaded seat 8 has two bosses 11, one of which is configured to engage with a boss track 12 on one side of the lug 5, and the other boss 11 is configured to engage with a boss track 12 on the opposite side of the lug 5. This prevents the replaceable threaded seat 8 from rotating within the lug 5. The wall 14 of the lug 5 (against which the replaceable threaded seat 8 abuts) can, for example, face away from the housing 1. At least one boss 11 can be provided, for example, at the leading end 13. In the illustrated embodiment, each boss 11 is part of a plane 15 that cuts diagonally through the cylindrical body 30, either completely or partially.

[0045] At the rear end 16 of the replaceable threaded seat 8 opposite to the leading end 13, a radially protruding protrusion 17 is provided, which engages with an inner stop surface 18 of the lug 5 when the replaceable threaded seat 8 abuts against the wall 14 when the replaceable threaded seat 8 is inserted into the lug 5. The inner stop surface is opposite to the wall 14. Figure 7 The replaceable threaded seat 8 is positioned in the lug 5 in this case so that when the cover 2 is mounted on the housing 1, the hole 10 is aligned with the hole 21 ( Figure 9 Because the replaceable threaded seat 8 abuts against the wall 14, the replaceable threaded seat 8 cannot move further toward the wall 14. Because the protrusion 17 engages the inner stop surface 18 and the boss 11 engages the boss track 12, the replaceable threaded seat 8 also cannot move in the opposite direction.

[0046] Lateral movement of the replaceable threaded seat 8 within the lug 5 can be prevented by selecting the width of the support geometry 9 (particularly the flat surface 15) such that the replaceable threaded seat can be received in the lug 5 with minimal or no play. Alternatively or additionally, the lug 5 (particularly in the wall 14) can be provided with a groove 29 that is complementary to the cylindrical body 30. Similarly, the body 30 can also be designed with another cross-sectional shape instead of a cylindrical shape. In this case, another complementary shape can be provided instead of the groove 29 to guide the body 30 within the lug 5.

[0047] The upper end of the wall 14 is provided with an upper stop surface 19, which limits the interchangeable threaded seat 8 to Figure 7 The position shown is purely axially displaced from the lug 5 up to a point at which the projection 17 is out of engagement with the inner stop surface 18 , so that the tail end 16 can be moved away from the wall 14 to be guided past the upper stop surface 19 .

[0048] The protrusion 17 and / or the boss 11 may be of a rounded design to ensure that the replaceable threaded seat 8 is smoothly inserted into the lug 5 .

[0049] Figure 8 Schematic diagram of the housing 1 , including a replaceable threaded seat 8 inserted into the lug 5 and a replacement part 20 (such as a filter element) inserted into the housing 1 .

[0050] Figure 9 Schematic diagram of the housing 1, comprising an interchangeable threaded seat 8 inserted into the lug 5, a replacement part 20 inserted into the housing 1, and a cover 2 mounted on the housing 1 in the closed position, wherein the hole 21 of the receptacle 3 is aligned with the hole 10 of the interchangeable threaded seat 8.

[0051] Figure 10Schematic diagram of the housing 1, including a replaceable threaded seat 8 inserted into the lug 5, a replacement part 20 inserted into the housing 1, and a cover 2 mounted on the housing 1, wherein the fastening screw 4 is screwed into the hole 10 of the replaceable threaded seat 8 through the hole 21 of the receptacle 3, and the screw head 6 is in contact with the receptacle 3.

[0052] The hole 21 of the receptacle 3 is dimensioned in particular so that the thread 22 of the fastening screw 4 does not enter the wall of the hole 21. The width of the hole 21 is therefore generally greater than that of the hole 10.

[0053] Figure 11 The schematic diagram of the housing 1 shows a replaceable threaded seat 8 inserted into the lug 5, a replacement part 20 inserted into the housing 1, a cover 2 mounted on the housing 1, and a tightening screw 4 screwed in. As the tightening screw 4 is screwed in further, the replaceable threaded seat 8 is pulled away from the lug 5 by its threads 22 until its rear end 16 abuts against the upper stop surface 19. In this situation, the tightening screw 4 itself prevents its rear end 16 from turning away from the wall 14 and being guided past the upper stop surface 19. The design of the replacement part 20 additionally prevents this by including a projection 23 that extends toward the cover 2, abutting against the inner stop surface 18 and continuing therefrom. As a result, the cover 2 is securely fixed to the housing 1.

[0054] Figure 12 Schematic diagram of an alternative embodiment of the replaceable threaded seat 8. In this case, the projection 17 not only projects radially but also axially, is formed in an alternative shape and additionally has a radial tongue 24 which is configured to rest on the upper sealing surface 25 of the housing 1.

[0055] Figure 13 Schematic diagram of another alternative embodiment of the exchangeable threaded seat 8 . In this case, two spring tongues 26 are provided instead of the projections 17 , which are configured to bear on recesses 27 of the housing 1 .

[0056] Figure 14 Schematic diagram of another alternative embodiment of the replaceable threaded seat 8. In this case, two spring tongues 26 are provided instead of the projections 17, which are configured to bear on the side edges 28 of the lug 5.

[0057] Figure 15 Schematic diagram of another alternative embodiment of the exchangeable threaded seat 8. In this case, two spring tongues 26 are provided instead of the projections 17, which are configured to bear on the wall 14 of the housing 1.

[0058] LIST OF REFERENCE NUMERALS 1 housing 2 cover 3 receptacle 4 fastening screw 5 lug 6 screw head 7 support geometry 8 interchangeable threaded seat 9 support geometry 10 hole 11 boss 12 boss track 13 leading end 14 wall 15 flat surface 16 trailing end 17 projection 18 inner stop surface 19 upper stop surface 20 replacement part 21 hole 22 thread 23 projection 24 tongue 25 upper sealing surface 26 tongue 27 notch 28 edge 29 groove 30 body

Claims

1. A replaceable threaded seat (8) for a housing (1) and a cover (2) closing the housing (1), wherein: The cover (2) has one or more receptacles (3) for each fastening screw (4), wherein the housing (1) has lugs (5) corresponding in number to the number of the receptacles (3), and when the cover (2) is mounted on the housing (1) in the closed position, the lugs are each aligned with one of the receptacles (3), wherein the lugs (5) are formed as a hollow structure in order to receive the interchangeable threaded seat (8), It is characterized in that the lug (5) is provided with a supporting geometry (7) in its interior, wherein the replaceable threaded seat (8) has a supporting geometry (9) complementary to the lug and a hole (10) for receiving a fastening screw (4), wherein the supporting geometry (7) of the lug (5) and the supporting geometry (9) of the replaceable threaded seat (8) are configured to engage with each other so that when the cover (2) is fitted onto the housing (1) in the closed position, the replaceable threaded seat (8) inserted into the lug (5) is held in a position in which the hole (10) is aligned with the hole (21) of the corresponding receptacle (3).

2. The replaceable threaded seat (8) according to claim 1, characterized in that: The replaceable threaded seat (8) has a cylindrical body (30) or a body (30) with other cross-sectional shapes, and the hole (10) is concentrically arranged in the body.

3. The replaceable threaded seat (8) according to claim 1 or 2, characterized in that: The support geometry (9) of the replaceable threaded seat (8) has at least one boss (11) which is configured to engage with a respective one of the boss tracks (12) which are part of the support geometry (7) of the lug (5) so that when the replaceable threaded seat (8) is inserted into the lug (5), the leading end (13) of the replaceable threaded seat (8) is guided towards a wall (14) of the lug (5) so that the replaceable threaded seat (8) abuts against the wall (14).

4. The replaceable threaded seat (8) according to one of the preceding claims, characterized in that A radially protruding protrusion (17) is provided at the tail end (16) of the replaceable threaded seat (8) opposite to the leading end (13). When the replaceable threaded seat (8) is inserted into the lug (5), when the replaceable threaded seat (8) abuts against the wall (14), the protrusion engages with the inner stop surface (18) of the lug (5), and the inner stop surface is opposite to the wall (14).

5. The replaceable threaded seat (8) according to one of the preceding claims, characterized in that The protrusion (17) and / or the boss (11) are of rounded design.

6. A device comprising a housing (1) and a cover (2) closing the housing (1), wherein: The cover (2) has one or more receptacles (3) for each fastening screw (4), wherein the housing (1) has a number of lugs (5) corresponding to the number of the receptacles (3), and when the cover (2) is mounted on the housing (1) in the closed position, the lugs are each aligned with one of the receptacles (3), and the device further comprises one or more interchangeable threaded seats (8) according to one of the preceding claims, corresponding to the number of the lugs (5).

7. The device according to claim 6, characterized in that The width of the support geometry (9) of the replaceable threaded seat (8) and the width of the lug (5) are selected so that the replaceable threaded seat can be received in the lug (5) with no play or with little play, and / or a groove (29) complementary to the body (30) is provided in the lug (5).

8. The device according to claim 6 or 7, characterized in that An upper stop surface (19) is provided at the upper end of the wall (14) of the lug (5), and the upper stop surface limits the axial movement of the replaceable threaded seat (8) from the lug (5) until a certain point, at which the protrusion (17) disengages from the engagement with the inner stop surface (18), allowing the tail end (16) to move away from the wall (14) so ​​as to be guided past the upper stop surface (19).

9. The device according to any one of claims 6 to 8, characterized in that The housing (1) is configured to receive a replacement part (20), such as a filter element, in particular an air filter.

10. The device according to claim 9, characterized in that: The replacement part (20) has a protrusion (23) which, when the replacement part (20) is inserted into the housing (1), abuts against the inner stop surface (19) toward the cover (2) and continues from the inner stop surface.

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