Switch wiring terminal
By designing conductive contact plates and guide plates at the rear end of the conductive frame of the switch terminal, the problem of the copper wires not being effectively pushed is solved, and better conductive connection quality is achieved, and power waste and switch damage is reduced. risk.
Patent Information
- Application Number
- CN202421155265.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The design of existing terminals is likely to cause the copper wires of multiple strands of wires to be not effectively pushed during the wiring process, resulting in poor conductivity connection, which in turn can cause waste of electricity and damage to the switch.
A switch terminal is designed, and the rear end of the conductive frame forms a conductive contact plate. The conductive contact plate is located on the corresponding rear side of the screw part. The conductive frame includes a left guide plate and a right guide plate. Through the design of these structures, the copper wire can be Effectively gather and push onto the conductive contact plate to ensure good conductive connection.
Through this design, the problem of copper wire not being pushed can be effectively avoided, ensuring that all copper wires in the multi-strand wires can be in close contact, improving the quality of conductive connections, and reducing the risk of power waste and switch damage.
Smart Images
Figure CN222440382U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wiring terminals, in particular to a switch wiring terminal. Background Art
[0002] At present, the wall switch is provided with a terminal block, which is used to connect the wire to the switch structure (movable contact piece or static contact piece) in an electrically conductive manner. The terminal block includes a conductive frame and a wire pressing screw, which is screwed to the conductive frame. The end of the wire pressing screw presses the end of the wire against the inner wall of the conductive frame, thereby fixing the end of the wire and forming an electrically conductive connection. The conductive frame of the switch on the market is rectangular. During the wiring process, the wire is inserted into the conductive frame, and then the wire pressing screw is tightened. In the case of multi-strand wires, some copper wires may not be effectively pushed by the end of the wire pressing screw, resulting in some copper wires of the multi-strand wires being connected in an ineffective manner, resulting in poor electrically conductive connection. In daily use, due to the large resistance of the conductive connection part, not only does it lead to waste of electric energy, but it may also cause damage to the switch due to heat. Therefore, the terminal block of the prior art is not conducive to good switch wiring, and it is necessary to make improvements. Summary of the invention
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a switch wiring terminal which is conducive to good switch wiring.
[0004] The purpose of the utility model is achieved through the following technical solutions.
[0005] The switch terminal disclosed in the utility model comprises a conductive frame and a wire pressing screw, wherein a connecting plate is formed at the front end of the conductive frame, and a screw portion is formed on the wire pressing screw, and the screw portion is screwed with the connecting plate, wherein a conductive contact plate is formed at the rear end of the conductive frame, and the conductive contact plate is located at the corresponding rear side of the screw portion, and the conductive contact plate is in the shape of a straight plate, and the conductive frame comprises a left guide plate and a right guide plate, wherein the rear end of the left guide plate is integrally connected to the left end of the conductive contact plate, and the rear end of the right guide plate is integrally connected to the right end of the conductive contact plate, and the left guide plate forms an obtuse angle with the conductive contact plate, and the right guide plate forms an obtuse angle with the electrical contact plate, and the conductive frame is integrally connected with a contact piece.
[0006] Preferably, the left guide plate and the right guide plate are left-right symmetrical structures.
[0007] Preferably, the left guide plate forms an angle of 96° to 100° with the conductive contact plate.
[0008] Preferably, a polished rod portion is formed at the rear end of the screw portion, a wire pressing end surface is formed at the rear end of the polished rod portion, and the wire pressing end surface is set to be a plane.
[0009] Preferably, the edge of the wire pressing end surface is formed with a rounded corner.
[0010] Preferably, the diameter of the polished rod portion is greater than eight-tenths of the inner width of the conductive contact plate.
[0011] Compared with the prior art, the utility model has the following beneficial effects: a conductive contact plate is formed by setting the rear end of the conductive frame, the conductive contact plate is located at the corresponding rear side of the screw portion, the conductive contact plate is in the shape of a straight plate, the conductive frame includes a left guide plate and a right guide plate, the rear end of the left guide plate is connected to the left end of the conductive contact plate as a whole, the rear end of the right guide plate is connected to the right end of the conductive contact plate as a whole, the left guide plate and the conductive contact plate form an obtuse angle, the right guide plate and the electrical contact plate form an obtuse angle, the left guide plate and the right guide plate play a guiding and converging role on the ends of the wires, which is conducive to good switch wiring. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a bottom-up stereoscopic structural schematic diagram of the switch terminal of the utility model.
[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the switch terminal of the utility model in the top view direction.
[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the conductive frame of the utility model in the top view direction.
[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the wire pressing screw of the utility model in the top view direction.
[0016] Figure 5 The utility model is a schematic structural diagram of the switch terminal and the wire end combination.
[0017] Explanation of reference numerals: conductive frame 1; contact piece 11; conductive contact plate 101; connecting plate 102; left guide plate 103; right guide plate 104; wire pressing screw 2; screw rod portion 201; bare rod portion 2011; wire pressing end surface 2012; rounded corner 2013. DETAILED DESCRIPTION
[0018] The utility model is further described below in conjunction with the accompanying drawings.
[0019] The switch terminal of the utility model is as follows Figure 1 and Figure 2 As shown, it includes a conductive frame 1 and a wire pressing screw 2. A connecting plate 102 is formed at the front end of the conductive frame 1. Figure 4 As shown, the wire pressing screw 2 is formed with a screw portion 201, as shown in FIG. Figure 2 As shown, the screw portion 201 is screwed to the connecting plate 102; Figure 2 and Figure 3As shown, a conductive contact plate 101 is formed at the rear end of the conductive frame 1, and the conductive contact plate 101 is located at the corresponding rear side of the screw portion 201, and the connecting plate 102 is parallel to the conductive contact plate 101, so that the axis of the wire pressing screw 2 is along the front-to-back direction, and the wire pressing screw 2 is rotated to move the wire pressing screw 2 backward, so that the end of the wire can be pushed toward the conductive contact plate 101. Figure 2 and Figure 3 As shown, the conductive contact plate 101 is a straight plate, and the conductive frame 1 includes a left guide plate 103 and a right guide plate 104. The rear end of the left guide plate 103 is connected to the left end of the conductive contact plate 101 as a whole, and the rear end of the right guide plate 104 is connected to the right end of the conductive contact plate 101 as a whole. The left guide plate 103 and the conductive contact plate 101 form an obtuse angle, as shown in FIG. Figure 3 As shown, specifically, the obtuse angle formed by the left guide plate 103 and the conductive contact plate 101 is Figure 3 The angle dimension "X" in the figure indicates that the right guide plate 104 forms an obtuse angle with the electrical contact plate 101. Specifically, the obtuse angle formed by the right guide plate 104 and the conductive contact plate 101 is Figure 3 The angle dimension "Y" in Figure 1 As shown, the conductive frame 1 is integrally connected with a contact 11. The contact 11 may be a static contact, and a silver contact is also provided on the contact 11, that is, the switch is provided with a moving contact and a static contact, and the moving contact switches the switch state by swinging, and when the silver contact on the moving contact contacts the silver contact on the static contact, the conduction is turned on; by integrally connecting the contact 11 with the conductive frame 1, it is avoided that one end of the contact 11 needs to be inserted into the conductive frame 1 during the assembly of the switch, thereby simplifying the assembly process.
[0020] like Figure 5As shown, during the wiring process, the rubber coating at the ends of the multi-strand wires is peeled off, and then the multiple copper wires 99 at the ends of the multi-strand wires are inserted into the conductive frame 1 (between the rear end of the wire pressing screw 2 and the conductive contact plate 101). At this time, the copper wires 99 are in a dispersed state, and then the wire pressing screw 2 is rotated to make the wire pressing screw 2 move backward in a spiral, so that the rear end of the wire pressing screw 2 pushes the copper wires 99 to move backward, and the copper wires 99 on the left and right sides will contact the left guide plate 103 and the right guide plate 104 respectively. Since the left guide plate 103 forms an obtuse angle with the conductive contact plate 101, and the right guide plate 104 forms an obtuse angle with the conductive contact plate 101, the width of the rear inner part of the conductive frame 1 in the left and right directions gradually decreases from front to back, that is, the conductive frame 1 is made. The rear interior is trapezoidal in shape, so that the left guide plate 103 and the right guide plate 104 can guide the copper wires 99 to move inward, that is, the left guide plate 103 guides the copper wires 99 on the left side to move rightward, and the right guide plate 104 guides the copper wires 99 on the right side to move leftward, so that the copper wires 99 are gradually gathered under the push of the wire pressing screw 2, and finally the wire pressing screw 2 firmly presses the copper wires 99 on the front side of the conductive contact plate 101, which greatly reduces the possibility of the copper wires 99 on the left and right sides being squeezed to the outside of the wire pressing screw 2. In addition, since the conductive contact plate 101 is a straight plate, it is beneficial for a larger number of copper wires 99 to directly contact the conductive contact plate 101 in the thrust direction of the wire pressing screw 2, which is beneficial for good switch wiring. If the inner surface of the conductive contact plate 101 is set as a concave arc surface, under the squeezing and pushing action of the wire pressing screw 2, the copper wires 99 located on the left and right sides may be squeezed away by the adjacent copper wires 99 and move back forward along the concave arc, resulting in inaccurate wire pressing; if the rear part of the conductive frame 1 is set as a tip, it is easy to cause the copper wires 99 in the end (rear end) of the tip to not easily obtain effective squeezing force. When the wire is a single-strand wire, if the end of the wire is close to the left or right side of the conductive frame 1, the convergence effect of the left guide plate 103 or the right guide plate 104 is also conducive to making the end of the wire close to the axis of the wire pressing screw 2. By setting the width of the rear inner part of the conductive frame 1 in the left and right directions to gradually decrease from front to back, it is conducive to the front end of the above-mentioned trapezoidal structure of the conductive frame 1 to have a larger space for inserting the dispersed copper wires 99.
[0021] Furthermore, if Figure 2 and Figure 3 As shown, the left guide plate 103 and the right guide plate 104 are mutually symmetrical structures, that is, the above-mentioned trapezoid is an isosceles trapezoid. Figure 3 The angle dimension "X" is equal to the angle dimension "Y", and the axis of the wire pressing screw 2 is located on the symmetric plane of the left guide plate 103 and the right guide plate 104. The above arrangement is beneficial to the force balance of the wire pressing screw 2 and is also beneficial to the uniform convergence and guiding effect of the copper wire 99.
[0022] Furthermore, the left guide plate 103 forms an angle of 96° to 100° with the conductive contact plate 101, that is, the angle dimension "X" is 96° to 100°. Figure 5 As shown, if the angle dimension "X" is set too large, the reaction force of the left guide plate 103 on the copper wire 99 will be close to the thrust of the parallel wire-pressing screw 2. That is to say, the resistance to tightening the wire-pressing screw 2 will be significantly increased, and even jamming may occur. That is, the wire-pressing screw 2 is tightened, but the thrust of the wire-pressing screw 2 is not actually mainly supported by the conductive contact plate 101, which will cause the copper wire 99 to be virtually connected; if the angle dimension "X" is set too small (that is, the left guide plate 103 is very close to being perpendicular to the conductive contact plate 101), the guiding and convergence effect of the left guide plate 103 will be very poor.
[0023] Furthermore, if Figure 4 As shown, the rear end of the screw portion 201 is formed with a smooth rod portion 2011, that is, there is no thread on the smooth rod portion 2011, and the smooth rod portion 2011 is cylindrical. The rear end of the pressing screw 2 is set as a smooth rod portion 2011 without threads, so as to avoid the external thread from scratching the copper wire 99. The rear end of the smooth rod portion 2011 is formed with a pressing end surface 2012, and the pressing end surface 2012 is set as a plane. Figure 2 and Figure 5 As shown, it is prevented that the copper wire 99 is easily moved left and right during the process of the wire pressing end surface 2012 pushing the copper wire 99 backwards; if the wire pressing end surface 2012 is set as a concave surface, excessive pressure will be applied to the copper wire 99 in a local area, resulting in the breakage of the copper wire 99; if the wire pressing end surface 2012 is set as a convex surface, when the wire pressing end surface 2012 pushes the copper wire 99 backwards, it is possible to push the copper wire 99 away, resulting in false wire pressing.
[0024] Furthermore, if Figure 4 As shown, the edge of the wire pressing end surface 2012 is formed with a rounded corner 2013. Figure 5 As shown, the edge of the wire pressing end surface 2012 is prevented from forming a sharp corner and crushing the copper wire 99.
[0025] Furthermore, if Figure 2 and Figure 4 As shown, the diameter (dimension W2) of the light rod portion 2011 is greater than eight tenths of the inner width (dimension W1) of the conductive contact plate 101, so that in the left and right directions, the wire pressing end surface 2012 largely occupies the space between the rear end of the left guide plate 103 and the rear end of the right guide plate 104, thereby preventing part of the copper wire 99 from being easily completely squeezed out of the light rod portion 2011. Specifically, as shown in FIG. Figure 2As shown, the screw portion 201 can be arranged to be close to the front inner wall of the conductive frame 1, and the diameter of the light rod portion 2011 is close to the minor diameter of the external thread of the screw portion 201, thereby minimizing the gap from the outer periphery of the light rod portion 2011 to the left guide plate 103 or the right guide plate 104, which is beneficial for tightening all copper wires 99 inserted into the conductive frame 1.
Claims
1. A switch terminal, comprising a conductive frame (1) and a wire-pressing screw (2), wherein a connecting plate (102) is formed at the front end of the conductive frame (1), and the wire-pressing screw (2) is formed with a screw portion (201), wherein the screw portion (201) is screwed to the connecting plate (102), and characterized in that: A conductive contact plate (101) is formed at the rear end of the conductive frame (1), the conductive contact plate (101) is located at the corresponding rear side of the screw portion (201), the conductive contact plate (101) is in the shape of a straight plate, the conductive frame (1) comprises a left guide plate (103) and a right guide plate (104), the rear end of the left guide plate (103) is integrally connected to the left end of the conductive contact plate (101), the rear end of the right guide plate (104) is integrally connected to the right end of the conductive contact plate (101), the left guide plate (103) and the conductive contact plate (101) form an obtuse angle, the right guide plate (104) and the conductive contact plate (101) form an obtuse angle, and the conductive frame (1) is integrally connected with a contact sheet (11).
2. The switch terminal according to claim 1, characterized in that: The left guide plate (103) and the right guide plate (104) are mutually symmetrical structures.
3. The switch terminal according to claim 2, characterized in that: The left guide plate (103) forms an angle of 96° to 100° with the conductive contact plate (101).
4. The switch terminal according to claim 1, characterized in that: A polished rod portion (2011) is formed at the rear end of the screw rod portion (201), and a line pressing end surface (2012) is formed at the rear end of the polished rod portion (2011), wherein the line pressing end surface (2012) is set to be a plane.
5. The switch terminal according to claim 4, characterized in that: The edge of the wire pressing end surface (2012) is formed with a rounded corner (2013).
6. The switch terminal according to claim 4, characterized in that: The diameter of the light rod portion (2011) is greater than eight-tenths of the inner width of the conductive contact plate (101).