CN115868087A

CN115868087A - Wiring device, bus bar wiring arrangement and electronic apparatus

Info

Publication number: CN115868087A
Application number: CN202180048949.7A
Authority: CN
Inventors: 克里斯蒂安·克劳彭堡; 扬·布拉赫特
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2020-07-14
Filing date: 2021-07-09
Publication date: 2023-03-28
Also published as: BE1028479A1; WO2022013084A1; EP4183003A1; BE1028479B1

Abstract

The invention relates to a connection device (100) for connecting to a busbar (200), comprising: a housing (110); a receiving chamber (112) formed on the housing (110) into which the bus bar (200) can be pushed; a contact element (113) arranged in the region of the receiving chamber (112) for making contact with the pushed-in busbar (200); and a lock member (114) that locks the bus bar (200) pushed into the accommodation chamber (112) in the mounted state.

Description

Wiring device, bus wiring arrangement and electronic apparatus

Technical Field

The present invention relates to a wiring device for connecting bus bars. The invention also relates to a bus bar connection arrangement and an electronic device.

Background

Such a busbar arrangement is used in particular for voltage tapping or for supplying power to devices arranged in a switchgear cabinet, in particular to communication devices arranged in a switchgear cabinet.

DE 35 10 C2 discloses a connection device for attachment to a busbar, wherein the connection device has a housing. A mouth-shaped notch suitable for containing one-side exposure of the bus bar is respectively formed in two side parts of the shell to be used as a containing cavity. In order to connect the electrical conductor to the connection device and to fasten the busbar to the connection device, a retaining spring is arranged as a contact element in the housing, which has a base and two legs. One of the legs is designed as a holding leg for the busbar, for which purpose its free end is bent back towards the base, so that the free end of the holding leg, after being fitted to the busbar, rests elastically thereon and locks the connection device on the busbar. The second leg can be deflected by means of a clamping screw, so that the inserted conductor is clamped between the clamping leg and the busbar. However, the disadvantage is that the busbar is only clamped by the free ends of the holding feet, so that it is possible for the connecting device to tilt on the busbar or for the connecting device to slip off the busbar accidentally due to vibrations.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a wiring device, a bus bar wiring arrangement and an electronic apparatus, which are capable of improving the fixation of the wiring device on the bus bar.

The solution of the invention to achieve the above object is characterized by the features of the independent claims. Preferred embodiments and advantageous developments of the invention are disclosed in the dependent claims.

The wiring device of the invention has a housing; a receiving cavity constructed on the housing into which the bus bar can be pushed; a contact element arranged in the region of the receiving chamber for making contact with the pushed-in busbar; and a lock member that locks the bus bar pushed into the accommodation chamber in the mounted state.

The securing element ensures that the busbar is securely held in the receiving space of the housing of the connecting device, so that the busbar is prevented from accidentally sliding out of or being released from the receiving space of the housing of the connecting device. The receiving cavity is preferably U-shaped so that the bus bar is pushed into the receiving cavity through an opening of the U-shape. The mounted state refers to a state in which the busbar is pushed into the receiving cavity on the housing and an electrical contact is made between the contact element of the wiring connection and the busbar. The locking element can preferably act on the pushed-in busbar in such a way that the locking element presses the busbar into the receiving space in the direction of the receiving space, i.e. further into the receiving space. The locking element can be designed such that it engages over the outer circumference of the busbar in order to hold and lock the busbar in the receiving space. The busbar can be tensioned in the receiving space in the installed state by means of the locking element. The lock element is preferably made of a non-conductive material. The connection device is particularly a bus bar connection device.

The lock element is preferably resiliently engaged on the housing. Through elastic engagement, the locking element can deviate when the wiring device is sleeved on the bus and separated from the bus, so as to prevent the bus from entering and exiting the path of the accommodating cavity. The locking element preferably engages directly on the housing. Preferably, the locking member is integrally formed with the housing. The locking element is preferably made of an insulating material, in particular a plastic material, like the housing.

Preferably, instead of directly locking the bus bar in the receiving cavity of the housing, the locking element preferably acts on the bus bar outside the receiving cavity to lock it in the receiving cavity. To this end, the lock member may be positioned outside the receiving cavity. The locking element is preferably engaged on the housing outside the receiving chamber. The lock member preferably does not extend into the receiving cavity. By positioning the lock element outside the accommodating cavity, the lock element can apply an acting force pointing to the accommodating cavity to the bus bar under the condition that the lock element abuts against the bus bar.

The housing of the wiring device may have a recess adjacent to the accommodation chamber, wherein the lock member may be engaged with the housing on a wall surface that restricts the recess. Since the locking element engages on the housing in the region of the recess, the lever arm of the locking element for acting on the bus bar pushed in can be increased.

The locking element can be designed or formed such that it has a web on which a latching lug is designed, which can be brought into engagement with a busbar pushed into the receiving space in the installed state. By means of the shape of the web, the locking element is preferably elongate. The snap flange is preferably constructed along the length of the tab. The snap flange is preferably formed in the region of the web between the engagement of the web with the housing and the free end of the web. The snap flange is preferably closer to the free end on the tab than the tab engages the housing. By means of this web shape, the locking element can at least partially bridge the pushed-in busbar and thus lock it in the receiving space. The snap-in flange is preferably formed on the side of the web facing the busbar. The snap-in flange can snap onto the busbar from behind, in particular onto its edge face, or from behind.

The connecting device may further have a retaining arm which, in the installed state, can exert a retaining force on the locking element acting in the direction of the busbar. The retaining arm may interact directly with the lock member. The holding arm preferably does not have a direct contact with the busbar in the mounted state. The retaining arm preferably acts indirectly on the busbar via the locking element. The locking of the busbar in the receiving space is enhanced by means of the retaining arms.

The retaining arm is preferably engaged to the housing as is the lock member. Preferably, the retaining arm is engaged on the housing at a distance from the lock member. Thus, the retaining arm may be engaged on the housing independently of the lock member or separately therefrom. The holding arm can likewise be made of an insulating material, in particular a plastic material.

The retaining arm may have a tab shape such that it may be elongated. The retaining arm has a free end, by means of which the retaining arm rests against the lock element in the mounted state. Since the retaining arm bears with its free end, it can exert a retaining force on the locking element. Since the lever arm of the retaining arm is extended by the elongated configuration, the retaining arm is able to exert the greatest degree of retaining force on the lock member through its free end.

In order to further increase the clamping effect and the holding force of the lock element against the busbar, the holding arm can rest against the lock element in the mounted state, preferably in the region of the latching flange of the lock element. The retaining arm preferably rests against a side face of the lock element which is arranged opposite the side face of the lock element on which the latching collar is formed. The retaining arm can rest against this oppositely situated side face of the lock element at the level of the latching flange. In the region of the snap flange, the lock element can be bent such that the lock element forms a depression or recess at the level of the snap flange, wherein in this depression or recess the retaining arm can rest against the lock element in the installed state, so that the retaining arm is positioned on the lock element in a targeted and reliable manner.

Another solution of the invention for achieving the object is a busbar connection arrangement having a busbar and at least one connection device of the above-described construction and development mounted on the busbar, wherein the busbar is pushed into a receiving space of the at least one connection device and is locked in the receiving space by means of a locking element of the at least one connection device.

Another solution of the present invention to achieve the above object is an electronic apparatus having at least one bus bar wiring configuration adopting the aforementioned construction and improvement. The electronic device may also be, for example, a distribution cabinet or a switch cabinet.

Drawings

The present invention will be described in detail with reference to the preferred embodiments with reference to the accompanying drawings.

Wherein

FIG. 1 is a schematic view of a bus bar and a wiring device of the present invention in an uninstalled state,

figure 2 is a schematic view of the arrangement of figure 1 as the bus bar is pushed into the receiving cavity of the housing of the wiring lug,

FIG. 3 is a schematic view of a bus bar connection arrangement after installation, an

Fig. 4 is a schematic perspective view of the arrangement of fig. 3 after installation.

Detailed Description

Fig. 1 to 4 show the installation of the connection device 100 on two busbars 200 provided so as to form a busbar connection arrangement 300 in the installed state shown in fig. 3 and 4.

The wiring device 100 is designed as a terminal block in this case, so that a plurality of such wiring devices 100 are arranged in series with one another on the busbar 200. The wiring lug 100 has a housing 110 that is constructed of an insulative material, such as a plastic material. The housing 110 has a plurality of insertion slots 111, on which a number of functional components 400, such as a connection plug or a connection terminal, can be electrically inserted into the connection device 100.

This wiring device 100 is mounted on one or more (here two) bus bars 200. For this purpose, the housing 110 has one or here two receiving chambers 112. The receiving chambers 112 are U-shaped, wherein the bus bars 200 can be pushed into the respective receiving chamber 112 through the exposed area of the U-shape, as can be seen in particular from fig. 2.

In the region of the receiving chambers 112, in each case one contact element 113 is arranged in order to make electrical contact with the busbar 200 pushed into the receiving chamber 112. The contact member 113 is made of a conductive material. The contact element 113 is here a contact spring which, as shown in fig. 1, partially protrudes into the receiving chamber 112.

The busbar 200, which is pushed into the left receiving space 112 in fig. 1 to 4, is locked in the installed state by means of the locking element 114.

The lock member 114 is directly coupled to the housing 110. The locking member 114 is integrally formed with the housing 110. The lock member 114 is made of an insulating material, such as a plastic material, as the housing 110.

The lock member 114 is coupled to the housing 110 outside the receiving cavity 112. Next to the receiving chamber 112, the housing 110 has a recess 115, wherein the locking element 114 engages on a wall 116 bounding the recess 115.

The lock member 114 is in the shape of a strip. The locking element 114 has a web 117 on which a snap-in collar 118 is formed. The snap flange 118 is formed on the side 119 of the web 117 facing the busbar 200. With the aid of the snap-in flange 118, the locking element 114 can be snapped onto the busbar 200 from behind in the installed state, so that the busbar 200 is held and locked in the receiving space 112.

The tab 117 has an engagement region 120 engaged to the housing 110 and a free end 121 disposed opposite the engagement region 120. A snap flange 118 is built up on the tab 117 between an engagement area 120 and a free end 121. The snap flange 118 is closer to the free end 121 than the engagement area 120.

With the strip shape, the locking member 114 has a certain elasticity, so that the locking member 114 is elastically engaged with the housing 110.

The lock member 114 and in particular the tab 117 of the lock member 114 has a straight section 122 and a curved section 123 along its length. Flat sections 122 are built up on the joining region 120. The curved section 123 adjoins the straight section 122 and extends to the tab 117 or the free end 121 of the locking element 114. The bending section 122 is bent in such a way that the free end 121 of the web 117 or of the locking element 114 is formed in the direction of the housing 110, in particular in the direction of the recess 115 of the housing 110, i.e. away from the busbar 200.

By means of the bent section 123, the lock member 114 or the web 117 of the lock member 114 has a recess 124 in which the retaining arm 125 rests against the lock member 114 in the installed state.

The retaining arm 125 is also engaged on the housing 110. The retaining arm 125 is engaged to the housing 110 at a distance from the lock member 114. The retaining arm 125 is integrally formed with the housing 110. The retaining arms 125 engage in the region of the recess 115 on the housing 110. The retaining arm 125 engages on the housing 110 above the lock member 114, so that the lock member 114 is arranged between the busbar 200 and the retaining arm 125 in the mounted state.

The holding arm 125 can exert a holding force acting in the direction of the busbar 200 on the locking element 114 in the mounted state. The holding arm 125 does not have direct contact with the busbar 200 in the mounted state. The retaining arm 125 acts indirectly on the busbar 200 via the lock member 114. The retention arm 125 enhances the locking of the busbar 200 within the receiving cavity 112.

The retaining arm 125 is elongated. The retaining arm 125 has a free end 126, by means of which the retaining arm 125 rests against the lock element 114 in the installed state. The retaining arm 125 rests in the mounted state against the lock member 114 in the recess 124 of the lock member 114. The free end 126 of the retaining arm 125 has a curvature that matches the curvature of the depression 124.

In order to further increase the clamping effect and the holding force of the lock element 114 against the busbar 200, the holding arm 125 rests in the mounted state against the lock element 114 in the region of the latching collar 118 of the lock element 114. The retaining arm 125 rests against a side face 127 of the lock member 114, which is arranged opposite the side face 119 of the lock member 114, on which the latching collar 118 is formed. The retaining arm 125 rests against this oppositely situated side face 127 of the lock element 114 at the level of the snap flange 118. A recess 124 is formed on the lock element 114 at the level of the snap flange 118, in which recess the retaining arm 125 rests against the lock element 114.

As shown in fig. 2, when the wiring connecting device 100 is mounted on the bus bar 200, the locking member 114 can be elastically pushed away from the bus bar 200 toward the holding arm 125, so as to bring the bus bar 200 into the receiving cavity 112. In the case that the bus bar 200 is pushed into the receiving cavity 112, as shown in fig. 3 and 4, the locking member 114 may automatically spring back toward the bus bar 200 to be clamped on the bus bar 200 by the snap flange 118 thereof, thereby locking the bus bar 200 in the receiving cavity 112. In this mounted state, the retaining arm 125 is pressed toward the lock member 114 from above to below, thereby tensioning the lock member 114 on the bus bar 114.

The lock element 114 bridges the busbar 200 in this installed state, wherein the latching flange 118 of the lock element 114 latches behind the busbar 200 on the edge face 210 of the busbar 200. In this way, the locking element 114 engages with the busbar 200 in the mounted state on the edge face 210. This edge surface 210 is located outside the receiving space 112 in the mounted state, so that the locking element 114 engages with the busbar 200 outside the receiving space 112 in the mounted state. In the installed state, the locking element 114 can thus exert a force K on the busbar 200, which acts in such a way that this force K presses the busbar 200 into the receiving space 112, thus preventing the busbar 200 from being released or slipping out of the receiving space 112. The force K applied by the lock member 114 to the bus bar 200 is enhanced by the retaining arm 125 acting on the lock member 114. The force K acts on the busbar 200 along the width of the busbar 200 such that the force K acts on the busbar 200 transverse to the length of the busbar 200.

To prevent incorrect installation of the connecting device 100 on the bus bar 200, a coding flange 128 is formed on the housing 110 of the connecting device 100.

Description of the reference numerals

100. Wiring device

110. Shell body

111. Inserting groove

112. Containing cavity

113. Contact element

114. Locking element

115. Concave part

116. Wall surface

117. Tab

118. Buckle flange

119. Side surface

120. Joining area

121. Free end

122. Straight section

123. Bending section

124. Recesses

125. Holding arm

126. Free end

127. Side surface

128. Coding flange

200. Bus bar

210. Edge surface

300. Bus wiring arrangement

400. Functional component

K force

Claims

1. A connection device (100) for connecting to a busbar (200) has

A housing (110) for accommodating the electronic component,

a receiving chamber (112) formed on the housing (110) into which the busbar (200) can be pushed,

a contact element (113) arranged in the region of the receiving chamber (112) for making contact with the pushed-in busbar (200), and

a lock member (114) that locks the bus bar (200) pushed into the accommodation chamber (112) in an installed state.

2. The wiring lug (100) of claim 1, wherein the lock member (114) is resiliently engaged with the housing (110).

3. The wiring device (100) according to claim 1 or 2, characterized in that the locking element (114) is positioned outside the housing chamber (112).

4. The wiring device (100) according to claim 2 or 3, characterized in that the housing (110) has a recess (115) adjacent to the receiving chamber (112), wherein the locking element (114) engages on the housing (110) on a wall surface (116) of the housing (110) bounding the recess (115).

5. The connecting device (100) as claimed in one of claims 1 to 4, characterized in that the locking element (114) has a web (117) on which a snap-in collar (118) is formed, which snap-in collar engages with the busbar (200) pushed into the receiving space (112) in the installed state.

6. The wiring connection device (100) according to one of claims 1 to 5, characterized by a retaining arm (125) which, in the mounted state, exerts a retaining force on the locking element (114) acting in the direction of the busbar (200).

7. The wiring lug (100) of claim 6, wherein the retaining arm (125) is engaged on the housing (110) at a distance from the lock member (114).

8. The wiring connection device (100) according to claim 6 or 7, characterized in that the retaining arm (125) has a free end (126), by means of which the retaining arm (125) rests against the lock element (114) in the mounted state.

9. The wiring lug (100) according to claim 8, characterized in that the retaining arm (125) in the mounted state abuts against the lock element (114) in the region of the latching flange (118) of the lock element (114).

10. A busbar connection arrangement (300) having a busbar (200) and at least one connection device (100) according to one of claims 1 to 9 mounted on the busbar (200), wherein the busbar (200) is pushed into a receiving chamber (112) of the at least one connection device (100) and is locked in the receiving chamber (112) by means of a locking element (114) of the at least one connection device (100).

11. An electronic device having at least one bus bar connection arrangement (300) according to claim 10.