CN210068642U

CN210068642U - Fixing piece for structural member and assembly with fixing piece

Info

Publication number: CN210068642U
Application number: CN201920525852.0U
Authority: CN
Inventors: F·布鲁赫施米特; O·克诺申
Original assignee: Eaton Corp
Current assignee: Eaton Corp
Priority date: 2018-04-17
Filing date: 2019-04-17
Publication date: 2020-02-14
Anticipated expiration: 2029-04-17
Also published as: DE102019109255A1

Abstract

A fastening element (10) for a component (12) is disclosed, which is used to fasten the component (12) to a support rail (14) or a flat surface (16). The fastener (10) has a threaded connection (100) and a clamping portion (102) adjacent thereto. The screw connection (100) is designed for screwing the fastening element (10) to the support rail (14) or the flat surface (16), and the clamping section (102) is designed for at least partially clamping the component (12). The clamping part (102) has a projection (108) on its underside, which projection is designed to be inserted into a corresponding recess (124) of the component (12), wherein the projection (108) has at least one projection, which projection is designed to be inserted into a corresponding recess of the recess for the projection (108). And to an assembly having at least one such fixing.

Description

Fixing piece for structural member and assembly with fixing piece

Technical Field

The present disclosure relates to a fastening element for components, such as electrical switch housings, in particular for fastening to a support rail or a flat surface.

Background

In order to fasten components such as electrical protection switches, relays and terminals in electrical distribution cabinets, switch cabinets, junction boxes and the like, so-called support rails such as metal rail profiles can be used. The components are usually fixed on the flat surface by a simple screw connection or by a clamping connection.

In order to clamp the circuit breaker to the support rail, a mounting clip is known from U.S. Pat. No. 8, 5,694,288. A coupling mechanism for mounting components on a support rail is known from german patent application publication DE4117465a 1. International patent application WO2017/077017a1 relates to a clamping module for fixing a component on a support rail, in particular a support rail. Another fastening device for fastening components to a support rail or support rail is known from european patent application EP2579402a 1. The clamping fixation of a protection switch on a flat surface is described in U.S. patent application publication No. US2007/0159776A 1. German patent application publication DE3328305a1 discloses a mounting device, for example for circuit breakers, in the form of a socket, which is adapted to be snapped onto a standard, preferably hood-shaped, mounting rail profile and in which at least one holding element can be detachably mounted on a narrow side of the mounting device. The US patent document US5,943,207 describes a power switch fixture. The main body of the power switch has rail insertion grooves on opposite sides. The rail insertion grooves receive stepped portions of a corresponding pair of support rails, which are mounted on the base. The power switch body is held with respect to the support rail such that it is inserted into a protrusion provided on one of the support rail step portion and the rail insertion groove, and a recess is provided on the other of the support rail step portion and the rail insertion groove. The circuit breaker may be mounted to the receptacle provided with the pair of support rails by the circuit breaker body being pushed between the support rails so that the respective step of the support rails is received in the respective rail insertion slot on the circuit breaker body.

In the following, a fastening element for a component is described, which is used in particular for fastening to a support rail or a flat surface.

SUMMERY OF THE UTILITY MODEL

According to one aspect, a fixture for a component is disclosed for securing the component to a support rail or a flat surface. The fixing member has a threaded connection portion and a clamping portion adjacent to the threaded connection portion. The threaded connection is designed for screwing the fastening element with the support rail or with a flat surface, and the clamping portion is designed for at least partially clamping the component. The clamping part has projections in the form of webs on its underside which are designed for insertion into corresponding recesses of the component. The projection also has at least one projection which is designed to be inserted into a corresponding recess of the pocket for the projection. The fastening element allows a component to be fastened in a relatively simple manner to different support rails or flat surfaces. The support rail can be, for example, a standardized rail profile. The projection prevents the member from slipping when it is secured to the support rail or flat surface. Furthermore, the projection on the projection ensures that the projection is correctly inserted into the corresponding recess of the component and is also fixed therein.

The threaded connection may have a plurality of through holes for screws. This allows greater flexibility in inserting the fastening element, since the plurality of through-holes allows different fastening possibilities for fastening to different support rails.

The clamping part can have a recess into which a correspondingly formed projection of the component can be clamped in such a way that the component is fixed to the support rail or to the flat surface. In particular, the recess is provided on a bottom surface of the clamping portion of the fastening part, which bottom surface in the mounted state of the fastening part abuts the support rail or the flat surface, so that a correspondingly formed projection of the component is clamped between the clamping portion and the support rail or the flat surface.

The fixing can be made in one piece, in particular of plastic. Alternatively, the fixing element can also have a multi-part construction and have a lower part and two side parts which can be fixed to the lower part.

According to another aspect, an assembly is provided, which has the following components: at least one fixing as described herein, a structure and a support rail or a flat surface. The at least one fixing element is fixed to the support rail or the flat surface by means of a screw connection and the component is clamped at least partially between the clamping portion of the fixing element and the support rail or the flat surface.

In particular, the component can have a housing with at least one circular opening for the installation of an electrical switch, wherein the at least one circular opening has two recesses on its periphery for the insertion of corresponding projections of the switch to be installed.

Drawings

Further features come from the following description in connection with the embodiments shown in the figures. The figures show:

fig. 1, 2 and 3 show three exemplary embodiments of an arrangement of an electrical switch housing on a support rail profile or plate and a fastening element for fastening the housing on the support rail or plate;

figure 4 shows a view from below of a housing for an electric switch together with a fixing clamped to the housing;

figure 5 shows several views of the electrical switch housing and fixture separated from the housing;

figure 6 shows a number of views of the possibility of mounting the electric switch housing and the housing in the housing;

fig. 7 shows a top view of the housing of fig. 6 with the switch mounted in the mounted state on the support rail;

figures 8-13 illustrate various embodiments of a fixture for an electrical switch housing.

Detailed Description

In the following description, identical, functionally identical and functionally related components may bear the same reference numerals. The following are merely examples of absolute values and should not be construed as limiting.

Fig. 1 shows the arrangement of a housing 12 for four electrical switches in two perspective views, which can be inserted into corresponding through-openings of the housing 12, as will be described in more detail below. The housing 12 is placed on an aluminum profile 14 as a support rail. The fixture 10 clamps the housing to the aluminum profile 14. For this purpose, each fixing element 10 is fixed in a defined position on the profile 14 by two screws 20 which pass through respective through holes of the threaded connection 100 of each fixing element 10 and are screwed together with inserts located (not visible) in the guide groove 140 of the aluminium profile 14. The projections 120 of the housing 12 are clamped between the clamping portion 102 of each fixing 10 and the surface of the profile 14 on which the housing 12 is seated, so that the housing 12 is fixed on the profile 14.

Fig. 2 shows a further arrangement in two perspective views, which differs from the arrangement shown in fig. 1 in that an aluminum profile 14 'is used, which is different from the support rail, and only one guide groove 140' is provided for the clamping insert 22. Accordingly, only one screw 20 is required for fastening the fastening element 10. The holding of the housing 12 by the fixing 10 takes place as in the arrangement shown in fig. 1.

The housing 12 is fixed to the profile 14 or 14' as briefly described below: the two fixing elements 10 required for holding the housing 12 can first be fixed to the profiles 14 or 14' with the screws 20 and the clamping inserts 22 so that they are movable, i.e. not yet fixed in the final position. The housing 12 is then placed in a predetermined position on the profile 14 or 14'. The two fixing elements 10 can then be moved closer to the short sides of the housing 12, for example by means of a corresponding tool, such as a screwdriver, so that the projections 120 of the housing are located below the clamping portion 102 of the respective fixing element 10 and the housing 12 is thereby held securely on the profile after the screw-on fixing.

Fig. 3 shows in perspective view that the housing 12 of fig. 1 and 2 rests on a flat surface formed by a plate 16. The mounting differs from the mounting on the support rail shown in fig. 1 and 2 primarily in that the housing 12 is first placed in a position on the plate 16 that is predetermined for this purpose, and then one or two fixing elements 10 are fixed on the plate 16 by screwing. It is also possible that one fixing element 10 is already screwed onto the plate before the housing 12 is placed and that a second fixing element 10 can be attached immediately after the housing 12 is placed onto the plate 16 and the housing projection is clamped under the clamping portion of the fixing element 10.

Figure 4 shows the housing 12 for the electric switch in a perspective view from below. The detail view shows the attachment of the fixture 10 to the boss 120 of the housing 12. The clamping portion 102 of the fastening element 10 has a projection 108 on its underside, which projection, in the mounted state, engages in a corresponding recess 124 of the projection 120 of the housing 12. The projections 108 are formed here in the form of webs on the side of the clamping part 102 which, in the mounted state, bears against a projection 120 of the housing 12. In this case, the tab 108 is inserted into the pocket 124 of the projection 120. This results, on the one hand, in a directed orientation of the housing 12 relative to the fastening element 10 and, on the other hand, in an easy fastening of the housing 12 to the fastening element 10, as a result of which the projections 120 can be prevented from slipping or sliding out of the clamping portion 102 during the assembly of the fastening element 10, in particular during the tightening.

Fig. 5 shows the housing 12 and the fastening element 10 in a view from above and in a view from below, separated from one another. The projections 120 of the housing 12 are broken away, such as by the pockets 124 for receiving the projections 108 of the fixture 10. The projection 108 can be formed so as to be widened as shown in the detail view from the upper right, so that it can be clamped or fixed in the recess 124, which results in easy fixing when the projection 120 is mounted under the clamping portion 102 of the fixing member 10.

Figure 6 shows a top view of the housing 12 having a through hole 122 for receiving the electrical switch 18 in two different orientations. Fig. a) shows a first installation possibility of the switch 18 in the opening 122, and fig. B) shows a second installation possibility rotated by 180 °. The groove 126 in this case provides for the orientation of the switch 18, which has one or two projections or projections (not visible) on its body, arranged at 180 ° from one another on the circumferential surface, which are inserted into the groove 126 when the switch 18 is inserted into the opening 122 and prevent a rotation of the switch 18 completely inserted into the opening 122.

Fig. 7 shows the housing 12 mounted on the aluminum profile 14' together with the incorporated switch 18 and three other openings 122 for the switch. The housing 12 is clamped to the profile 14' by means of two fasteners 10.

FIG. 8 shows an embodiment of a fastener 10' constructed in multiple pieces having a lower portion 110, two side portions 112, and an upper portion 114. These

parts

110, 112 and 114 may be made of plastic, for example.

Fig. 9 to 11 show embodiments of the fastening elements 10 ", 10"', 10 "", which are constructed in one piece and which can also be manufactured from plastic.

Fig. 12 shows a further exemplary embodiment of a fastening element 10 ""' in one piece, which has a projection on the projection 108 for fastening the projection 108 in a corresponding recess of a projection of the housing 12. The projections can be formed in the form of shaped structures such as bars, pins, tips, hemispheres, teeth, etc. from the projections 108. Importantly, the protrusion causes the projection 108 to be stably seated within the corresponding recess of the protrusion of the housing 12. For example, it is possible during assembly to ensure that the projection 108 is completely located in the raised recess and is securely fixed therein by a "snap-fit" of the projection 108 in the raised recess on the housing 12, which may be advantageous, in particular, when comparatively heavy components are to be mounted in unfavorable installation positions, such as suspended ceiling installations, since a sufficient positioning force for the component may already be generated by clamping the projection in the recess, and the subsequent fixing of the component by screwing does not require the installer to hold the component by hand.

Figure 13 shows another embodiment of an assembly of a fixing 11, a support rail 14 'and a housing 12' for an electric switch. The fastening element 11 differs from the fastening element 10-10 "" 'described above in that it has a clamping portion 120 which is arranged between the two threaded connections 100 and to which the housing 12' is fitted or clamped. The fixing element 11 can in this case be manufactured in one piece, for example from plastic. In this case, during installation, the fastening part 11 can first be positioned in place on the mounting rail 14 'and fastened by means of a screw connection, after which the housing 12' with the electric switch can be plugged or clipped onto the fastening part 11.

Claims

1. A fastening element (10) for a component (12) for fastening the component (12) to a support rail (14) or a flat surface (16), wherein the fixing element (10) has a threaded connection (100) and a clamping portion (102) adjoining the threaded connection, wherein the threaded connection (100) is designed for screwing the fastening element (10) to the support rail (14) or the flat surface (16), and the clamping portion (102) is designed to at least partially clamp the component (12), characterized in that the clamping part (102) has projections (108) in the form of webs on its underside which are designed for insertion into corresponding recesses (124) of the component (12), wherein the projection (108) has at least one projection which is designed to be inserted into a corresponding recess of the pocket for the projection (108).

2. The fixture according to claim 1, characterized in that the threaded connection (100) has a plurality of through holes (104) for screws.

3. A fixing according to claim 1 or 2, characterized in that the clamping portion (102) has a recess (106) in which a correspondingly configured projection (120) of the component (12) can be clamped, so that the component (12) is fixed to the support rail (14) or the flat surface (16).

4. A fixing according to claim 1 or 2, characterized in that it is made in one piece.

5. A fixing element according to claim 1 or 2, characterized in that it is of multi-piece construction and has a lower part (110) and two side parts (112) which can be fixed to the lower part (110).

6. An assembly, comprising:

at least one fixing (10) according to one of the preceding claims,

component (12) and

a support rail (14) or a flat surface (16),

-wherein the at least one fixing part (10) is fixed on the support rail (14) or the flat surface (16) by means of a screw connection and the component (12) is clamped at least partially between the clamping portion (102) of the fixing part (10) and the support rail (14) or the flat surface (16).

7. Assembly according to claim 6, characterized in that the component has a housing with at least one circular opening for the insertion of an electrical switch, wherein the at least one circular opening has two indentations at its periphery for the insertion of corresponding projections of the switch to be inserted.