Connection device, connection element and electronic device
By designing a clamping spring retaining leg with a curved structure and an operating element, the problem of reliable conductor clamping in a compact structure is solved, achieving self-stabilizing clamping of the conductor and preventing displacement, thus improving the reliability of the connection device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PHOENIX CONTACT GMBH & CO KG
- Filing Date
- 2021-11-24
- Publication Date
- 2026-05-12
AI Technical Summary
Existing connection devices struggle to achieve reliable clamping and stable connection of conductors within a compact structure.
The retaining leg, which uses a clamping spring, is designed with a curved structure. It is supported on the current bar by the line contact of the first leg section, and the clamping leg is reliably operated by the operating element to ensure the self-stabilizing clamping of the conductor in the clamping position.
This achieves reliable and stable clamping of the conductor in a compact structure, preventing lateral displacement of the conductor and improving the reliability and compactness of the connection.
Smart Images
Figure CN114552241B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a connection device for connecting electrical conductors. Furthermore, this invention relates to a connection element having such a connection device and an electronic device. Background Technology
[0002] Connection devices for connecting electrical conductors typically include a current bar and a clamping spring for clamping the conductor to be connected onto the current bar. The clamping spring is typically constructed as a helical torsion spring, having a retaining leg fixedly supported in position and a clamping leg swaying relative to the retaining leg. The clamping leg can be swung between an open position and a clamped position, wherein in the open position, the conductor can be inserted into and drawn out of a conductor connection chamber between the clamping leg of the clamping spring and the current bar, and wherein in the clamped position, the conductor inserted into the conductor connection chamber is clamped relative to the current bar. Summary of the Invention
[0003] The purpose of this invention is to provide a connection device, a connection element, and an electronic device, characterized by reliably connecting conductors while maintaining a structure that is as compact as possible.
[0004] According to the invention, this objective is achieved by the features of the independent claim. Advantageous designs and improvements of the invention are given in the dependent claims.
[0005] The connecting device according to the invention has a current bar and a clamping spring for clamping a conductor to be connected onto the current bar, wherein the clamping spring has clamping legs and retaining legs that can be moved to an open position and a clamping position, wherein the clamping legs clamp the conductor to be connected onto the underside of the current bar, and wherein the retaining leg has a first leg section that is curved and supports the upper side of the current bar opposite to the lower side in the case of forming a line contact.
[0006] According to the invention, a clamping spring is at least partially supported and rested on a current bar by its retaining leg. The clamping spring is supported on the upper side of the current bar at least by a first leg section of the retaining leg, and the conductor to be connected is clamped on the lower side opposite to the upper side by means of the clamping leg of the clamping spring, thus forming a self-stabilizing system that enables reliable and stable clamping of the conductor to be connected. The first leg section is curved, and the retaining leg is placed or supported on the upper side of the current bar by means of this first leg section. Therefore, the first leg section of the retaining leg is not exactly straight or flat, nor is it placed entirely on the upper side of the current bar. Instead, by means of its curved shape, the first leg section only rests on the upper side of the current bar with a sub-surface of the first leg section that is smaller than the total area of the first leg section. The remaining portion of the first leg section is preferably spaced apart from the current bar, particularly from the upper side of the current bar. A line contact is constructed between the current bar and the first leg section at the position where the first leg section abuts against the upper side of the current bar. This means that the first leg section linearly and therefore along a preferably narrow line abuts against the current bar. The line contact preferably extends along the width of the current bar or along the width of the first leg section and therefore transverse to the length of the current bar or transverse to the length of the first leg section. Therefore, this line contact requires a very small area, allowing the connection device to be constructed more compactly. Two such clamping springs can also be provided on the current bar, thereby allowing two conductors to be connected.
[0007] Preferably, the first leg section is constructed in an S-shape. The S-shape of the first leg section provides sufficient stability. In the region of the bend of the S-shaped leg section pointing towards the current bar, the first leg section preferably forms line contact with the current bar. The first leg section has two bends constructed along the length of the first leg section that are spaced apart from each other, one of which abuts against the current bar to establish line contact, and the other of which is spaced as far as possible from the current bar, especially from the upper side of the current bar.
[0008] The retaining leg is preferably divided into multiple leg segments, which may be oriented at an angle to each other. Preferably, in addition to the first leg segment, the retaining leg also has a second leg segment and a third leg segment, wherein the second leg segment may be arranged between the first and third leg segments, and wherein the third leg segment may be arranged between the second leg segment and the clamping leg. Thus, the first leg segment can constitute the free end segment of the retaining leg, and therefore the clamping spring, because the first leg segment is connected to the second leg segment by one of its two ends and is free at the other end. With this design of the clamping spring having three leg segments of the retaining leg and the clamping leg, the clamping spring can have a spherical shape. The second leg segment may be oriented substantially perpendicular to the third leg segment. The first leg segment may be formed on the second leg segment by a bend, wherein the bend may be designed such that the first leg segment bends toward the clamping leg of the clamping spring. The clamping leg may be connected to the third leg segment by an arcuate segment. With this design, the clamping spring can be roughly formed into a triangle. This shape allows the clamping spring to become self-supporting.
[0009] Preferably, the first leg segment can be bent and connected to the second leg segment, such that the first leg segment initially extends beyond the upper side of the current bar from the second leg segment and bends towards the upper side of the current bar in a further direction. Therefore, the first leg segment can extend directly adjacent to and spaced apart from the current bar at its connection point on the second leg segment. Then, contact, more precisely, line contact, is achieved between the first leg segment and the current bar only in a direction along the length of the first leg segment away from the connection point on the second leg segment. Therefore, the line contact between the first leg segment and the current bar is preferably constructed spaced apart from the connection point or connection area of the first leg segment on the second leg segment.
[0010] The clamping spring can be attached to the current bar. To achieve this, the second leg section can have an opening through which the current bar can be guided. The opening can be constructed in the second leg section, for example, in the form of a window-shaped opening, so that the opening can be completely surrounded. In the area of the opening, the clamping spring can therefore be placed on the current bar, particularly on the upper side of the current bar.
[0011] To achieve high stability of the clamping spring arrangement on the current bar, the second leg section may have a stop hook that extends into the opening and is supported on the current bar by its end edge. The stop hook preferably extends transversely to the longitudinal direction of the current bar, so that it meets and supports the current bar at a right angle. The stop hook is supported on the upper side of the current bar. The end edge of the stop hook is preferably constructed as a straight line, so that the stop hook can abut against the current bar with its end edge facet.
[0012] Furthermore, the connecting device preferably has an operating element for manipulating the clamping legs of the clamping spring, wherein the operating element may have a first operating leg and a second operating leg arranged at a distance from the first operating leg, wherein a free space may be constructed between the first and second operating legs, and the first leg section of the clamping spring may be arranged in this free space. The two operating legs preferably extend parallel to each other. These two operating legs can be directly pressed onto the clamping legs of the clamping spring to manipulate the clamping spring. Through the free space between the two operating legs and the arrangement of the first leg section of the retaining leg within this free space, a particularly compact design for the arrangement of the clamping spring and the operating element can be achieved.
[0013] A first sliding surface can be constructed on the first operating leg, and a second sliding surface can be constructed on the second operating leg. The two operating legs abut against the second leg section of the clamping spring using the first and second sliding surfaces, and can slide along them when the clamping leg is operated. This achieves reliable guidance of the operating element on the clamping spring while maintaining a compact design. The two sliding surfaces are preferably parallel to the longitudinal extension of the second leg section of the clamping spring, so that the two operating legs can slide along the length of the second leg section and are thus guided. Through the direct abutment of the operating legs and therefore the operating element against the second leg section of the retaining leg, the conductor connection chamber (in which the conductor is inserted and clamped) can be laterally defined or closed, thereby preventing lateral displacement of the conductor from the conductor connection chamber. The two operating legs preferably extend transversely to the second leg section of the retaining leg. The two sliding surfaces are preferably constructed on the edge surfaces of the two operating legs pointing towards the second leg section.
[0014] The actuating element may also have a conductor insertion well for inserting the conductor to be connected, wherein the conductor insertion well may be laterally defined by a first actuating leg and a second actuating leg, respectively. The actuating legs of the actuating element can thus guide the conductor laterally as it is inserted into the conductor connection chamber, thereby preventing lateral displacement of the conductor.
[0015] The actuating element is preferably guided in a linear motion. The actuating direction of the actuating element is preferably configured to be transverse to the insertion direction of the conductor into the conductor connection chamber.
[0016] Furthermore, the solution according to the invention is achieved by means of a connecting element having a housing in which the connecting devices, constructed and improved as described above, can be arranged. The connecting element may, for example, be a connecting terminal, such as a junction box or circuit board connecting terminal.
[0017] Furthermore, the solution according to the present invention is achieved by means of an electronic device having at least one connection device constructed and improved as described above and / or at least one connection element constructed and improved as described above. Attached Figure Description
[0018] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.
[0019] Figure 1 A schematic diagram of the clamping spring of the connecting device according to the present invention is shown.
[0020] Figure 2 A schematic cross-sectional view of the connecting device according to the present invention is shown.
[0021] Figure 3 A schematic cross-sectional view of the connecting element according to the present invention is shown, and
[0022] Figure 4 A schematic diagram of a connection device according to the invention is shown, which has two clamping springs arranged on a current bar and two actuating elements. Detailed Implementation
[0023] Figure 1 A clamping spring 111 is shown, by means of which the electrical conductor to be connected can be clamped onto the current bar 110 and connected therefrom, for example... Figure 2 As shown in the image.
[0024] The clamping spring 111 is a stamped and bent part. The clamping spring 111 has a clamping leg 112 and a retaining leg 113. The retaining leg 113 is fixedly positioned, while the clamping leg 112 can be deflected relative to the retaining leg 113, so that the clamping leg 112 can be moved to an open position and a clamping position.
[0025] The retaining leg 113 has three leg sections: a first leg section 114, a second leg section 115, and a third leg section 116. The first leg section 114 forms the free end of the clamping spring 111. The second leg section 115 is disposed between the first leg section 114 and the third leg section 116. The third leg section 116 is disposed between the second leg section 115 and the clamping leg 112. The clamping leg 112 is connected to the third leg section 116 via an arcuate section 117 and thereby connected to the retaining leg 113.
[0026] These leg segments 114, 115, and 116 are constructed at angles to each other. The second leg segment 115 and the third leg segment 116 are oriented at approximately a 90° angle. The clamping spring 111 is bent with its clamping leg 112 and its holding leg 113 such that, in a top view viewed from the side of the clamping spring 111 in its initial position (e.g., ...) Figure 1 (As shown) It has a triangular shape.
[0027] The second leg segment 115 and the third leg segment 116 are constructed as straight lines. In contrast, the first leg segment 114 is not constructed as a straight line, but rather as a curved line. The first leg segment 114 is constructed in an S-shaped curve.
[0028] The first leg segment 114 has a first bend 118 and a second bend 119 due to the S-shaped bend. The first bend 118 is constructed closer to the connection portion 120 between the first leg segment 114 and the second leg segment 115 than the second bend 119. The first bend 118 is directly connected to the connection portion 120.
[0029] As in Figure 2 As can be seen, the first leg segment 114 abuts against the upper side 121 of the current bar 110 via the second bend 119, such that the first leg segment 114 is supported on the current bar 110 by its second bend 119. The first leg segment 114 is thus supported on the upper side 121 of the current bar 110 by its second bend 119, thereby forming a line contact between the first leg segment 114 and the current bar 110. The line contact extends across the width of the current bar 110 and the width of the first leg segment 114, thus being constructed to extend transversely to both the longitudinal direction of the current bar 110 and the longitudinal direction of the first leg segment 114. In the region of the second bend 119, the only contact point between the first leg segment 114 and the current bar 110 is constructed in the form of a line contact.
[0030] In the region of the second bend 119 of the first leg section 114, the first leg section 114 has the largest possible distance to the current bar 110, and especially to the upper side 121 of the current bar 110. Therefore, the first leg section 114 is constructed in such a curved manner and connected to the second leg section 115 that the first leg section 114 extends from the second leg section 115 beyond the upper side 121 of the current bar 110 and is further curved toward the upper side 121 of the current bar 110 in a further direction.
[0031] The conductor to be connected is clamped on the lower side 122 of the current bar 110, which is opposite to the upper side 121, by means of the clamping leg 112 of the clamping spring 111.
[0032] The second leg section 115 has a window-shaped opening 123 through which the current bar 110 is guided. A clamping spring 111 is thus suspended from the current bar 110. In the region of the opening 123, the second leg section 115 has a stop hook 124 that extends into the opening 123 and rests on and is supported on the upper side 121 of the current bar 110 with its end edge 125. The end edge 125 is constructed in a straight line, so that it rests against the upper side 121 of the current bar 110 along its entire length. The stop hook 124 extends in the longitudinal direction of the second leg section 115 such that it extends transversely to the longitudinal extension of the current bar 110.
[0033] The opening 123 is defined by two parallel longitudinal edge surfaces 126a and 126b and two parallel transverse edge surfaces 127a and 127b of the second leg segment 115. The longitudinal edge surfaces extend along the longitudinal direction of the second leg segment 115, and the transverse edge surfaces extend transversely to the longitudinal direction of the second leg segment 115. A stop hook 124 is constructed at the transverse edge surface 127a and extends from the transverse edge surface 127a into the opening 123.
[0034] Figure 2 A cross-section of the connecting device 100 is shown. In addition to the current bar 110 and the clamping spring 111, the connecting device also has an operating element 128. The operating element 128 is linearly movable along the operating direction B to move the clamping leg 112 of the clamping spring 111 to the open position and the clamping position.
[0035] Figure 2 The clamping leg 112 is shown in the open position, in which the clamping leg 112 is spaced apart from the lower side 122 of the current bar 110, and thus releases the conductor connection chamber 129 so that the conductor to be connected can be introduced into the conductor connection chamber 129 between the clamping leg 112 of the clamping spring 111 and the current bar 110.
[0036] Especially in Figure 4 As can also be seen, the operating element 128 has two operating legs 130a and 130b extending parallel to each other. The two operating legs 130a and 130b rest against the clamping leg 112 of the clamping spring 111 to operate the clamping leg. The two operating legs 130a and 130b extend laterally through the current bar 110.
[0037] A free space 131 is formed between the two manipulating legs 130a and 130b, and the first leg segment 114 of the leg 112 is positioned in this free space.
[0038] Sliding surfaces 132a and 132b are respectively constructed on the two operating legs 130a and 130b. By means of these sliding surfaces, the two operating legs 130a and 130b abut against the second leg section 115 of the retaining leg 112, so that the operating legs 130a and 130b can slide along the second leg section 115 and are thereby guided. The two sliding surfaces 132a and 132b extend parallel to the longitudinal extension of the second leg section 115 of the clamping spring 111, so that the two operating legs 130a and 130b are guided to slide along the length of the second leg section 115 by means of their sliding surfaces 132a and 132b. By means of the actuating legs 130a, 130b and the actuating element 128 directly abutting against the second leg section 115 of the retaining leg 113, the conductor connection chamber 129 (in which the conductor is inserted and clamped) is laterally defined or closed at least in the open position of the clamping leg 112, thereby preventing the conductor from laterally shifting out of the conductor connection chamber 129. The two actuating legs 130a, 130b extend transversely to the second leg section 115 of the retaining leg 113. Two sliding surfaces 132a, 132b are formed on the edge surfaces of the two actuating legs 130a, 130b pointing towards the second leg section 115.
[0039] The two control legs 130a and 130b also laterally define the conductor insertion well 133 constructed on the control element 128, through which the conductor to be connected is inserted into the conductor connection chamber 129. The conductor insertion well 133 flows into the conductor connection chamber 129.
[0040] Figure 3 The connecting element 200 is shown in cross-sectional view. The connecting element 200 has a housing 210, as shown in... Figure 2 The connecting device 100 shown is arranged in the housing. The housing 210 has a conductor insertion opening 211 through which the conductor to be connected is inserted into the housing 210. The conductor insertion opening 211 flows into the conductor insertion well 133 and thus into the conductor connection chamber 129. The insertion direction E of the conductor to be connected is configured to be transverse to the operation direction B of the operating element 128.
[0041] The housing 210 is preferably constructed of an insulating material.
[0042] exist Figure 3 The clamping leg 112 of the clamping spring 111 in the clamping position is shown.
[0043] Figure 4 A connecting device 100 is shown, which has a current bar 110, two clamping springs 111 arranged on the current bar 110, and two actuating elements 128. The current bar 110, clamping springs 111, and actuating elements 128 are arranged according to... Figure 1 and Figure 2The construction scheme shown in the figure is constructed.
[0044] Figure 4 The connecting device 110 shown enables the simultaneous connection of two conductors.
[0045] Explanation of reference numerals in the attached figures
[0046] 100 Connecting Device
[0047] 110 Current bar
[0048] 111 Clamping Spring
[0049] 112 Clasp your legs together
[0050] 113 Keep your legs
[0051] 114 First Leg Section
[0052] 115 Second Leg Section
[0053] 116 Third leg section
[0054] 117 Arc-shaped section
[0055] 118 First Bend
[0056] 119 Second Bend
[0057] 120 Connection part
[0058] 121 upper side
[0059] 122 Lower side
[0060] 123 Opening
[0061] 124 Stop hook
[0062] 125 End Edge
[0063] 126a, 126b Longitudinal edge faces
[0064] 127a, 127b Transverse edge surfaces
[0065] 128 Control elements
[0066] 129 Conductor Connection Chamber
[0067] 130a, 130b Control Legs
[0068] 131 Free Space
[0069] 132a, 132b sliding surfaces
[0070] 133 Conductor Insertion Well
[0071] 200 Connecting elements
[0072] 210 Housing
[0073] 211 Conductor insertion opening
[0074] B. Direction control
[0075] E Insertion direction
Claims
1. A connecting device (100) for connecting electrical conductors, comprising a current bar (110) and a clamping spring (111) for clamping the conductor to be connected relative to the current bar (110), wherein the clamping spring (111) has a clamping leg (112) and a retaining leg (113) capable of moving to an open position and a clamped position, wherein the clamping leg (112) clamps the conductor to be connected onto the lower side (122) of the current bar (110), and wherein the retaining leg (113) has a first leg section (114) which is bent and supported on the upper side (121) of the current bar (110) opposite the lower side (122) in the case of forming a line contact. Its features are, The connecting device (100) also has an actuating element (128) for actuating the clamping leg (112) of the clamping spring (111), wherein the actuating element (128) has a first actuating leg (130a) and a second actuating leg (130b) spaced apart from the first actuating leg (130a), wherein a first sliding surface (132a) is formed on the first actuating leg (130a) and a second sliding surface (132b) is formed on the second actuating leg (130b), wherein the first actuating leg (130a) abuts against the retaining leg (113) of the clamping spring (111) via the first sliding surface (132a) and the second actuating leg (130b) via the second sliding surface (132b), and slides along the clamping leg (112) when the clamping leg (112) is actuated.
2. The connecting device (100) according to claim 1, characterized in that, The first leg section (114) is S-shaped and curved.
3. The connecting device (100) according to claim 1, characterized in that, The retaining leg (113) has a second leg section (115) and a third leg section (116), wherein the second leg section (115) is disposed between the first leg section (114) and the third leg section (116), and wherein the third leg section (116) is disposed between the second leg section (115) and the clamping leg (112).
4. The connecting device (100) according to claim 3, characterized in that, The first leg section (114) is constructed and connected to the second leg section (115) in such a curved manner that the first leg section (114) extends from the second leg section (115) beyond the upper side (121) of the current bar (110) and is constructed to curve toward the upper side (121) of the current bar (110) in a further direction.
5. The connecting device (100) according to claim 3, characterized in that, The second leg section (115) has an opening (123) through which the current bar (110) is guided.
6. The connecting device (100) according to claim 5, characterized in that, The second leg section (115) has a stop hook (124) that extends into the opening (123) and is supported on the current bar (110) by its end edge (125).
7. The connecting device (100) according to claim 1, characterized in that, A free space (131) is constructed between the first operating leg (130a) and the second operating leg (130b) of the operating element (128), and the first leg section (115) of the clamping spring (111) is arranged in the free space.
8. The connecting device (100) according to claim 7, characterized in that, The first operating leg (130a) and the second operating leg (130b) abut against the second leg section (115) of the clamping spring (111).
9. The connecting device (100) according to claim 1, characterized in that, The actuating element (128) has a conductor insertion well (133) for inserting a conductor to be connected, wherein the conductor insertion well (133) is defined on the side by the first actuating leg (130a) and the second actuating leg (130b), respectively.
10. A connecting element (200) having a housing (210) in which a connecting device (100) constructed according to any one of claims 1 to 9 is arranged.
11. An electronic device having at least one connection means (100) according to any one of claims 1 to 9 and / or having at least one connection element (200) according to claim 10.