CN216648618U

CN216648618U - Connecting device and electronic equipment

Info

Publication number: CN216648618U
Application number: CN202121858460.XU
Authority: CN
Inventors: 马库斯·克特恩
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2020-08-11
Filing date: 2021-08-10
Publication date: 2022-05-31
Anticipated expiration: 2031-08-10
Also published as: DE102020121072A1

Abstract

The utility model relates to a connecting device (100) for connecting electrical conductors, comprising a clamping spring (110) and a clamping cage (111) which has an insertion region (112) for inserting a conductor to be connected and in which clamping cage (110) the inserted conductor is connected in a clamping position of the clamping spring (110), wherein the clamping spring (110) is held on the clamping cage (111).

Description

Connecting device and electronic equipment

Technical Field

The utility model relates to a connecting device for connecting electrical conductors. The utility model also relates to an electronic device having at least one such connecting device.

Background

Such connection devices usually have a bus bar and a clamping spring, wherein the conductor to be connected can be clamped against the bus bar by means of the clamping spring in order to connect the conductor. The bus bar can have a web or a section on which the clamping spring is supported. In this case, there is the risk that the clamping spring can change its position relative to the busbar, so that the desired supporting effect and thus a sufficiently high clamping force can no longer be exerted by the clamping spring on the conductor to be connected. For actuating the clamping spring, an actuating element can be provided. If the actuating element is configured as a lever, the latter is usually mounted rotatably on an insulating housing of the connecting device.

SUMMERY OF THE UTILITY MODEL

The object of the utility model is to provide a connecting device and an electronic device, by means of which the connection of conductors can be improved, in particular the stability when connecting conductors.

According to the utility model, this object is achieved with the features of the independent claims. Advantageous embodiments and advantageous refinements of the utility model are specified in the dependent claims.

The connecting device according to the utility model has a clamping spring and a clamping cage which has an insertion region for inserting a conductor to be connected and in which the inserted conductor is connected in a clamping position of the clamping spring, wherein the clamping spring is held on the clamping cage.

According to the utility model, the connecting device is now provided with a clamping cage in which the conductor to be connected is clamped. Furthermore, the clamping cage serves to accommodate and hold the clamping spring. The clamping spring can preferably be held in a stationary manner on the clamping cage, so that the clamping spring does not change its position, for example, even in the event of a crash or vibration, so that a reliable and defined position of the clamping spring can be ensured at any time and thus a reliable and defined clamping of the conductor to be connected can be achieved by means of the clamping spring. The clamping spring holds and thus fixes the conductor to be connected on the clamping cage and simultaneously clamps the conductor in the clamping cage, a closed force system can be formed by the clamping cage and the clamping spring, so that the clamping of the conductor and thus the connection of the conductor and the stability of the connection device can be further improved. The clamping spring can be held on the clamping cage in a force-fitting and/or form-fitting manner. Thus, according to the utility model, the clamping spring is no longer supported on the bus bar. The connecting device may have a housing, wherein the housing may have an inner space in which the clamping spring and the clamping cage may be arranged. The housing is preferably made of an insulating material, such as a plastic material. The housing preferably has a conductor insertion opening through which the conductor to be connected can be inserted into the housing and the clamping cage. The conductor insertion opening is preferably formed in alignment with the insertion region of the clamping cage. The connecting device can be designed as a connecting terminal, such as a circuit board connecting terminal or a terminal block. The connecting device can also be part of a plug connector.

The clamping spring is preferably designed as a torsion coil spring (schenkelfoder). The clamping spring can have a holding arm, a clamping arm and an arc-shaped section for connecting the holding arm to the clamping arm, wherein the clamping spring can be held on the clamping cage by its holding arm. The fastening of the clamping spring to the clamping cage can thus be formed by the retaining arms of the clamping spring. Thus, the holding arms of the clamping spring can be held in a fixed position relative to the clamping cage. Relative movement between the retaining arms of the clamping spring and the clamping cage can thus be prevented. And the centre gripping arm free movement ground of centre gripping spring sets up inside the centre gripping cage to the centre gripping arm can move clamping position and open position, and at clamping position, the conductor that inserts in the centre gripping cage is by the centre gripping, and at open position, the conductor can insert the centre gripping cage and extract from the centre gripping cage, moves in the centre gripping cage.

The clamping cage may have a U-shape. The clamping cage can have two side walls extending parallel to one another and a bottom wall extending transversely to the two side walls, wherein the clamping spring can be held on the two side walls. The clamping spring can be held clampingly between the two side walls. The two side walls may define, together with the bottom wall, an inner space of the clamping cage, wherein the clamping spring may be arranged inside the inner space. The clamping spring may be arranged between the two side walls. The clamping spring is preferably arranged in the clamping cage in such a way that the clamping arm is arranged closer to the bottom wall than the holding arm of the clamping spring. The clamping of the conductor can be carried out towards the bottom wall of the clamping cage by means of the clamping arms of the clamping spring. The clamping of the conductor can thus be achieved between the two side walls of the clamping cage, so that the side walls can prevent a displacement of the conductor or of the individual strands of the conductor when clamping the conductor, as a result of which the clamping of the conductor and thus the connection of the conductor can be further improved.

The clamping springs can be fixed to the clamping cage, for example, in such a way that the side walls of the clamping cage each have a recess into which the clamping spring engages. The clamping spring can thus be hooked and/or latched in a recess of the side wall. The recesses may each be of slot-shaped design. Spacers or ridges can be formed on the holding arms of the clamping spring on both longitudinal side edges of the holding arms, respectively, which spacers or ridges can engage in corresponding recesses of the side walls. These recesses can be formed in the form of window-like openings in each case in both side walls of the clamping cage.

The connecting device may also have an actuating lever, by means of which the clamping spring can be transferred into a clamping position and into an open position, wherein the actuating lever is rotatably mounted on the clamping cage. If an actuating lever for actuating the clamping spring is provided, this actuating lever can therefore be fastened to the clamping cage according to the utility model, so that it is now no longer necessary to fasten the clamping cage to the housing of the connecting device according to the utility model. Therefore, the housing does not have to be provided at all. The clamping cage can thus be designed both for supporting the clamping spring and for supporting the actuating lever. Thus, the clamping spring and the operating lever can be held and fixed on one and the same component. This makes it possible to construct a self-contained force system which is closed in itself between the clamping cage, the clamping spring and the actuating lever. The bearing of the actuating lever can be designed as a bearing of the clamping spring on both side walls of the clamping cage. In each case, a receiving opening can be formed in the two side walls, in which opening the rotational axis of the actuating lever can be rotatably mounted.

The clamping spring and the actuating lever are preferably held on the clamping cage in such a way that, starting from the bottom wall of the clamping cage, the actuating lever can be supported on the clamping cage above the clamping spring. Thus, the clamping spring may be arranged between the bottom wall and the lever. The actuating lever can be supported on the side wall at its free end. The clamping spring may be retained and secured to the side wall of the clamping cage at approximately the center of the side wall length. This positioning of the clamping spring and the operating rod makes it possible to facilitate the assembly of the clamping spring and the operating rod on the clamping cage. During assembly, the clamping spring can be initially tensioned between the two side walls of the clamping cage, wherein for this purpose the side walls can be bent away from one another, so that the clamping spring can be positioned between the two side walls and can engage the clamping spring on the two side walls. If the clamping spring is fixed on the clamping cage, the operating lever can be hung on the two side walls of the clamping cage through the two accommodating openings of the side walls.

In order to achieve a particularly high stability of the connecting device, the clamping cage can be made of a metallic material. The clamping cage may be a stamped and bent piece. The manufacture of the clamping cage can thus be carried out in a simple manner.

The connecting device can also have a bus bar, which can be inserted into the holding cage. The clamping of the inserted conductor on the bus bar can be achieved by means of a clamping spring. The bus bars can be inserted into the clamping cage in such a way that they can rest flat against the bottom wall of the clamping cage. The bus bar can have end sections which project from the clamping cage and which can be brought into contact with a circuit board, for example.

If the clamping cage is made of a metallic material, the bus bar may also be omitted and the conductor to be connected may be clamped directly against the bottom wall of the clamping cage, so that the bottom wall itself may form a bus bar.

Furthermore, an actuating arm can be formed on the clamping arm of the clamping spring, which actuating arm can be guided from the clamping arm in the direction of the actuating lever past the retaining arm, wherein the actuating arm can interact with the actuating lever in such a way that the clamping arm can be transferred into the clamping position and the open position by means of the actuating arm. The actuating lever therefore does not exert a force directly on the clamping arm for actuating the clamping spring, but rather the actuating lever exerts a force indirectly via the actuating arm on the clamping arm of the clamping spring in order to actuate the clamping arm. When the clamping spring is transferred from the clamping position into the open position, the actuating lever can be pivoted in such a way that it exerts a pressure force on the actuating arm, wherein by means of this pressure force exerted on the actuating arm a pulling force can be exerted by the actuating arm on the clamping arm, as a result of which the clamping arm can be pulled in the direction of the holding arm.

The solution according to the object of the utility model is furthermore achieved by means of an electronic device having at least one connecting device constructed and improved as described above.

Drawings

The utility model is explained in detail below according to preferred embodiments with reference to the drawings. Wherein,

fig. 1 shows a schematic view of a connection device according to the utility model, wherein the clamping spring is in a clamping position,

fig. 2 shows a schematic view of the connection device shown in fig. 1, with the clamping spring in an open position,

fig. 3 shows another schematic view of the connection device shown in fig. 1, wherein the clamping spring is in an open position,

fig. 4 shows a schematic view of the assembly of the connecting device shown in fig. 1 to 3, and

fig. 5 shows a schematic illustration of the arrangement of the connection device shown in fig. 1 to 3 in a housing.

Detailed Description

Fig. 1 shows a connecting device 100 for connecting and electrically contacting an electrical conductor, not shown here.

The connecting device 100 has a clamping spring 110 and a clamping cage 111. The clamping cage 111 has an insertion region 112 through which a conductor to be connected can be inserted into the clamping cage 111, in order to be able to be clamped and connected within the clamping cage 111 by means of the clamping spring 110.

The clamping cage 111 is configured in a U-shape. The clamping cage 111 has two

side walls

113a,113b extending parallel to one another and a bottom wall 114 extending transversely to the two

side walls

113a,113 b. The insertion region 112 of the clamping cage 111 extends between the two

side walls

113a,113b of the clamping cage 111.

The clamping cage 111 is made of a metallic material. The clamping cage 111 is constructed from stamped bent parts.

The clamping spring 110 is arranged between two

side walls

113a,113b of the clamping cage 111. The clamping spring 110 thus extends at least partially into the interior space of the clamping cage 111, which is defined by the two

side walls

113a,113b and the bottom wall 114.

The clamping spring 110 is a helical torsion spring. The clamp spring 110 has a retaining arm 115, a clamp arm 116, and an arcuate section 117 connecting the retaining arm 115 with the clamp arm 116.

The clamping spring 110 is held on the clamping cage 111 by its holding arms 115. The holding arms 115 are thus held in a stationary manner and are fixed to the holding cage 111. And gripper arms 116 of gripper spring 110 are movable relative to gripper cage 111 such that gripper arms 116 of gripper spring 110 may be moved to a gripping position and an open position.

A

recess

118a,118b, into which the retaining arm 115 of the clamping spring 110 engages, is formed on each of the two

side walls

113a,113b of the clamping cage 111. The

recesses

118a,118b are each formed as a window-shaped opening having a slit shape. The two

recesses

118a,118b are formed at the same height on the

respective side walls

113a,113 b. Two

recesses

118a,118b are formed approximately centrally on the

side walls

113a,113b over the length of the

side walls

113a,113b, respectively.

In the region of the

recesses

118a,118b, the retaining arm 115 has a greater width than the remaining region of the retaining arm 115, so that the retaining arm 115 can engage in the

recesses

118a,118b over its width region. For this purpose, the retaining arms 115 have a

respective web

120a,120b at their

longitudinal side edges

119a,119b, which widens the retaining arms 115. The

spacers

120a,120b each extend along the length of the retaining arm 115. The two

webs

120a,120b are molded on the same height on the retaining arm 115, wherein the

webs

120a,120b are formed integrally with the retaining arm 115.

The connecting device 100 also has an actuating lever 121 for actuating the clamping spring 110. By means of a rotational movement of the actuating lever 121, the clamping spring 110 can be moved into a clamping position, as shown in fig. 1 and 5, and into an open position, as shown in fig. 2 and 3.

The actuating lever 121 is rotatably mounted on the clamping cage 111. Thus, the clamping spring 110 and the actuating lever 121 are supported on the clamping cage 111. The actuating lever 121 is arranged above the clamping spring 110, viewed from the bottom wall 114 of the clamping cage 111, so that the clamping spring 110 is arranged between the actuating lever 121 and the bottom wall 114 of the clamping cage 111.

The support of the actuating lever 121 is carried out on both

side walls

113a,113b of the clamping cage 111. For this purpose, a receiving

opening

122a,122b is formed on each

side wall

113a,113b, wherein a rotational axis 123 of the actuating lever 121 is rotatably supported in both receiving

openings

122a,122 b. Receiving

openings

122a,122b are formed in

free ends

124a,124b of the

side walls

113a,113b, respectively. The free ends 124a,124b of the

side walls

113a,113b have the greatest possible distance from the bottom wall 114 of the clamping cage 111. The receiving

openings

122a,122b are formed at the edges of the

side walls

113a,113b, so that the receiving

openings

122a,122b are open and are formed just as if they were not window-shaped. By the open configuration of the receiving

openings

122a,122b, the receiving

openings

122a,122b each have a U-shape. Due to the U-shape of the receiving

openings

122a,122b, the mounting of the actuating rod 121 on the clamping cage 111 can be achieved by the actuating rod 121 being suspended with its rotational axis 123 into the two receiving

openings

122a,122 b.

For actuating the clamping spring 110 by means of the actuating lever 121, an actuating arm 125 is formed on the clamping arm 116 of the clamping spring 110, said arm proceeding from the clamping arm 116 through the holding arm 115. When the clamping spring 110 is transferred from the clamping position into the open position, the actuating lever 121 can be deflected in such a way that it exerts a pressure force on the actuating arm 125, wherein by means of this pressure force exerted on the actuating arm 125 a pulling force is exerted by the actuating arm 125 on the clamping arm 116, as a result of which the clamping arm 116 is pulled in the direction of the holding arm 115. Thus, the actuating lever 125 acts indirectly via the actuating arm 125 on the clamping arm 116 of the clamping spring 110.

The actuating arm 125 has a main web 126 and a stop web 127, which is formed at an angle to the main web 126. Main spacer 126 is integrally connected to clamp arm 116. The main spacer 126 extends at right angles to the gripper arms 116. The actuating arm 125 is guided past the holding arm 115 by means of a main web 126, in such a way that the main web 126 overlaps the holding arm 115. The actuating arm 125 is actuated by the actuating lever 121 via a stop diaphragm 127 in such a way that the actuating lever 121 bears against the stop diaphragm 127 during the pivoting movement. Stop spacer 127 is formed at a distance from gripper arm 116 and has no direct connection to gripper arm 116. Main spacer 126 constitutes a connection between stop spacer 127 and gripper arm 116.

The assembly of the connecting device 100 is carried out by first fixing the clamping spring 110 on the clamping cage 111, as shown in fig. 4. When the clamping spring 110 is assembled, the actuating lever 121 is not yet arranged on the clamping cage 111. To assemble the clamping spring 110, the two

side walls

113a,113b of the clamping cage 111 can be bent away from each other or away from each other, as can be seen in fig. 4, so that the clamping spring 110 can be pushed between the two

side walls

113a,113 b. If the clamping spring 110 with the

webs

120a,120b of the holding arm 115 are arranged at the level of the

recesses

118a,118b, the

side walls

113a,113b can be moved back into their basic state, in which the

side walls

113a,113b extend parallel to one another, as a result of which the

webs

120a,120b are inserted into the

recesses

118a,118b and in turn engage into the

recesses

118a,118b in order to hold the clamping spring 110 on the clamping cage 111. After the clamping spring 110 has been fitted, the actuating lever 121 can be fitted to the clamping cage 111 in such a way that the actuating lever 121 with its axis of rotation 123 engages into

recesses

122a,122b on the two

side walls

113a,113b of the clamping cage 111.

Furthermore, the connecting device 100 has a bus bar 128, which is inserted into the clamping cage 111. In the inserted state, the bus bar 128 lies at least partially in a planar manner on the bottom wall 114 of the clamping cage 111. A conductor inserted through the insertion region 112 of the clamping cage 111 can be clamped in the clamping position relative to the bus bar 128 by means of the clamping arms 116 of the clamping spring 110 in order to connect the conductor.

The bus bar 128 has two

end sections

129a,129b, which both project from the clamping cage 111. The

end sections

129a,129b shown in fig. 1 to 5 serve for contacting a circuit board not shown here.

The bus bar 128 has a U-shape here together with two

end sections

129a,129 b. In this U-shaped configuration of the bus bar 128, it is inserted into the clamping cage 111 before the clamping spring 110 is fitted on the clamping cage 111.

Fig. 5 shows the connection device 100 shown in fig. 1 to 4, which is arranged in a housing 130 of the connection device 100. The housing 130 has a conductor insertion opening 131 for inserting a conductor to be connected into the housing 130, wherein the conductor insertion opening 131 is formed in alignment with the insertion region 112 of the clamping cage 111.

The connection device 100 forms a connection terminal, in particular a circuit board connection terminal.

Description of the reference numerals

100 connecting device

110 clamping spring

111 clamping cage

112 insertion region

113a,113b side wall

114 bottom wall

115 holding arm

116 clamp arm

117 arc segment

118a,118b

119a,119b longitudinal side edge

120a,120b spacer

121 joystick

122a,122b receiving openings

123 rotating shaft

124a,124b free ends

125 operating arm

126 main spacer

127 stop spacer

128 bus bar

129a,129b end section

130 casing

131 conductor insertion opening

Claims

1. A connecting device (100) for connecting electrical conductors, characterized in that the connecting device comprises a clamping spring (110) and a clamping cage (111), the clamping cage (111) having an insertion region (112) for inserting a conductor to be connected and in the clamping position of the clamping spring (110) an inserted conductor is connected within the clamping cage, wherein the clamping spring (110) is held on the clamping cage (111).

2. The connecting device (100) according to claim 1, characterized in that the clamping spring (110) has a holding arm (115), a clamping arm (116) and an arc-shaped section (117) for connecting the holding arm (115) with the clamping arm (116), wherein the clamping spring (110) is held on the clamping cage (111) by its holding arm (115).

3. The connecting device (100) according to claim 1 or 2, characterized in that the clamping cage (111) has two side walls (113a, 113b) extending parallel to one another and a bottom wall (114) extending transversely to the two side walls (113a, 113b), wherein the clamping spring (110) is held on the two side walls (113a, 113 b).

4. The connection device (100) according to claim 3, characterised in that the side walls (113a, 113b) have a recess (118a, 118b), respectively, into which the clamping spring (110) is embedded.

5. The connecting device (100) according to claim 2, characterised by an actuating lever (121) by means of which the clamping spring (110) can be transferred into the clamping position and into the open position, wherein the actuating lever (121) is rotatably supported on the clamping cage (111).

6. The connecting device (100) according to claim 5, characterised in that the actuating lever (121) is supported on the clamping cage (111) above the clamping spring (110) starting from a bottom wall (114) of the clamping cage (111).

7. The connecting device (100) according to claim 1, characterized in that the clamping cage (111) is composed of a metallic material.

8. The connecting device (100) according to claim 1, characterised in that a busbar (128) is inserted into the clamping cage (111).

9. Connection device (100) according to claim 5, characterized in that a control arm (125) is formed on the clamping arm (116) of the clamping spring (110), which control arm is guided from the clamping arm (116) in the direction of the actuating lever (121) past the retaining arm (115), wherein the control arm (125) interacts with the actuating lever (121) in such a way that the clamping arm (116) can be transferred into the clamping position and the open position by means of the control arm (125).

10. Electronic device, characterized in that it has at least one connecting device (100) constructed according to any one of claims 1 to 9.