Anti-vibration anti-reverse-installation crimping-free wiring terminal strip

Abstract

The utility model discloses an anti-vibration anti-reverse-installation crimping-free wiring terminal strip, which comprises an installation slide rail, a plurality of arranged wiring terminals are installed on the installation slide rail, each wiring terminal comprises a lower cover and an upper cover, the lower cover is installed on the installation slide rail, symmetrical electric conductors are installed in the lower cover, and the upper cover is installed on the installation slide rail. Cage type elastic pieces used for clamping a wire insulating layer are installed at the two ends of the electric conductor, arc-shaped elastic pieces used for pushing a wire conductive part to the electric conductor and clamping the wire conductive part are installed on the electric conductor, the wire insulating layer is clamped through the cage type elastic pieces by means of the elastic force of the cage type elastic pieces, and due to the fact that the insulating layer is made of plastic, the cage type elastic pieces can easily form dents on the insulating layer. In addition, the conductive part is completely wrapped by the lower cover and the upper cover, no matter how the conductive part is installed, the conductive part is not reversely installed, and the short circuit phenomenon caused by reverse installation is completely eradicated.

Description

Technical Field

[0001] The utility model relates to a wiring terminal, in particular to a vibration-proof and reverse-installation-proof crimp-free wiring terminal row. Background Art

[0002] The terminal block is a special equipment with a unified arrangement, which is convenient for installation, maintenance and repair. It is used for the installation and wiring of small conductive lines and signal lines in various machinery and equipment control cabinets. At present, the mainstream terminal block wiring method on the market is to first crimp the wire with a small sleeve, then insert it into the terminal block, and tighten the screws of the terminal block to tighten it. The firmness of this wiring method is greatly affected by human factors, and the wiring quality stability is insufficient; in addition, in some vibration scenarios (equipment has different degrees of vibration during operation), and this kind of rigid connection tightened by screws is easily affected by vibration and loose virtual connection under long-term vibration, which has an adverse effect on the long-term stable and safe operation of the current; in addition, due to factors such as cost and appearance, the terminal block is often designed as a half-open type, and the back of another terminal is used as an insulator when installing and assembling. This design is not fool-proof, which often leads to the possibility of reverse installation by operators. Once reverse installation, a short circuit will occur, causing a safety accident. For example, if the first terminal is installed in the right position and the second terminal is installed in the wrong position, the conductive parts between the two terminals will abut, resulting in a short circuit. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a vibration-proof and reverse-installation-proof crimp-free terminal block.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A vibration-proof and anti-reverse-installation crimp-free terminal block, comprising a mounting slide rail, on which a plurality of arranged terminal blocks are mounted, the terminal blocks comprising a lower cover and an upper cover, the lower cover being mounted on the mounting slide rail, a symmetrical conductor being mounted in the lower cover, cage-type spring pieces for clamping the insulating layer of the conductor being mounted at both ends of the conductor, and an arc-shaped spring piece for pushing the conductive part of the conductor toward the conductor and clamping it being mounted on the conductor.

[0006] The cage-type spring piece comprises a pressure-bearing portion, an elastic portion and a locking portion for locking the insulating layer of the wire, and the locking portion is provided with a through hole for the wire to pass through.

[0007] A mounting portion is folded downward on one side of the conductor, and the arc-shaped spring piece is mounted on the mounting portion.

[0008] The mounting portion is provided with a clamping portion and a limiting portion. A clearance groove is provided between the bottom surface of the clamping portion and the top surface of the limiting portion. The arc-shaped elastic piece includes a "U"-shaped portion, an insertion portion connected to the end of the "U"-shaped portion, and an elastic portion for pushing the conductive portion of the wire towards the conductor. The "U"-shaped portion is clamped on the clamping portion, and the insertion portion is inserted into the clearance groove.

[0009] The extending direction of the elastic portion is the same as the direction in which the wire is inserted into the terminal.

[0010] A through hole is provided on the upper cover at the position of the arc-shaped elastic piece. A slidable wire withdrawal button is installed in the through hole, and at least a part of the wire withdrawal button abuts against the elastic portion.

[0011] An installation groove is provided on the upper cover at the position of the cage-shaped elastic piece. An incoming wire pressing member is hinged in the installation groove, and at least a part of the incoming wire pressing member abuts against at least a part of the cage-shaped elastic piece.

[0012] Both ends of the conductor are provided with guiding portions that are matched with the diameter of the insulating layer and the conductive portion of the wire and whose ends are upturned. Both ends of the terminal are provided with insertion holes for inserting the wire. After the wire is inserted into the insertion holes, a part of the bottom surface of the guiding portion presses tightly on the insulating layer of the wire.

[0013] Both sides of the installation slide rail are provided with sliding piece portions. The lower cover is provided with sliding grooves corresponding to the sliding piece portions, and the lower cover is installed in the installation slide rail through the sliding piece portions and the sliding grooves.

[0014] The lower cover is provided with an installation cavity with an upward opening and having insulation on the outside. When the upper cover is installed in the installation cavity of the lower cover, the conductive parts of the upper cover and the lower cover are wrapped and insulated from the outside.

[0015] The beneficial effects of the present utility model are as follows: In the present utility model, a number of arranged terminals are installed on the installation slide rail. The terminal includes a lower cover and an upper cover. The lower cover is installed on the installation slide rail. Symmetrical conductors are installed in the lower cover. Cage-shaped elastic pieces for clamping the insulating layer of the wire are installed at both ends of the conductor. An arc-shaped elastic piece for pushing the conductive portion of the wire towards the conductor and clamping it is installed on the conductor. The cage-shaped elastic piece uses its own elastic force to tightly clamp the insulating layer of the wire. Since the insulating layer is made of plastic material, the cage-shaped elastic piece can easily form indentations on it, thus achieving the effect of double clamping the wire and preventing it from loosening or even falling off due to vibration. In addition, the conductive parts are completely wrapped by the lower cover and the upper cover, and no matter how it is installed, there will be no reverse installation situation, eliminating the short-circuit phenomenon caused by reverse installation. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 is the structural diagram of the present utility model;

[0018] Figure 2 is the exploded view of the terminal block;

[0019] Figure 3 is one of the cross-sectional views of the terminal block;

[0020] Figure 4 is the other cross-sectional view of the terminal block;

[0021] Figure 5 is the structural diagram of the lower cover;

[0022] Figure 6 is the structural diagram of the conductor;

[0023] Figure 7 is the structural diagram of the arc-shaped elastic piece;

[0024] Figure 8 is the structural diagram of the cage-shaped elastic piece;

[0025] Figure 9 is the structural diagram of the incoming line pressing part. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other.

[0027] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0028] Some embodiments of the present utility model provided below will be described in conjunction with the accompanying drawings.

[0029] Refer to Figures 1-9, a vibration-proof, anti-reverse-installation and non-crimping type terminal block, comprising an installation slide rail 1, on which a number of arranged terminal blocks 2 are installed. The terminal block 2 includes a lower cover 3 and an upper cover 4. The lower cover 3 is installed on the installation slide rail 1. Symmetrical conductors 27 are installed inside the lower cover 3. Cage-shaped elastic pieces 6 for clamping the insulating layer of a wire 5 are installed at both ends of the conductor 27. An arc-shaped elastic piece 7 for pushing the conductive part of the wire 5 towards the conductor 27 and clamping it is installed on the conductor 27. The cage-shaped elastic piece 6 uses its own elasticity to clamp the insulating layer of the wire 5. Since the insulating layer is made of plastic material, the cage-shaped elastic piece 6 can easily form indentations on it, thus achieving the effect of double-clamping the wire 5 and preventing it from loosening or even falling off due to vibration.

[0030] An installation part 8 is folded downwards on one side of the conductor 27. The arc-shaped elastic piece 7 is installed on the installation part 8. A clamping part 9 and a limiting part 10 are arranged on the installation part 8. A clearance groove is arranged between the bottom surface of the clamping part 9 and the top surface of the limiting part 10. The arc-shaped elastic piece 7 includes a "U"-shaped part 11, an insertion part 12 connected to the end of the "U"-shaped part 11, and an elastic part 13 for pushing the conductive part of the wire 5 towards the conductor 27. The "U"-shaped part 11 is clamped on the clamping part 9, and the insertion part 12 is inserted into the clearance groove.

[0031] The extending direction of the elastic part 13 is the same as the direction in which the wire 5 is inserted into the terminal block 2 (as shown in Figure 2 , 3 ). When the wire 5 is withdrawn due to vibration or other reasons, the elastic part 13 restricts the loosening of the conductive part of the wire 5, further improving the anti-loosening effect of this product.

[0032] A through hole 18 is arranged on the upper cover 4 at the position of the arc-shaped elastic piece 7. A slidable wire withdrawal button 19 is installed in the through hole 18. At least a part of the wire withdrawal button 19 abuts against the elastic part 13. The wire withdrawal button 19 shown in the present utility model includes a pressing part 191 and a pressing part 192. The pressing part 191 is used for manual pressing, and the pressing part 192 is used for abutting against the elastic part 13. During operation, pressing the pressing part 191 by hand can press down the elastic part 13 of the arc-shaped elastic piece 7 to achieve the purpose of wire withdrawal.

[0033] A limiting protrusion 28 is arranged at the lower end of the wire withdrawal button 19. The maximum cross-sectional dimension of the limiting protrusion 28 is greater than the diameter of the through hole 18, preventing the wire withdrawal button 19 from coming out of the through hole 18.

[0034] As shown in Figure 4As shown, one side of the arc-shaped spring piece 7 exceeds the side edge of the conductor 27, and the line-retraction button 19 is located above the part of the arc-shaped spring piece 7 that exceeds the side of the conductor 27, that is, the line-retraction button 19 and the conductor 27 are misaligned. When the line-retraction button 19 is pressed, the line-retraction button 19 and the conductor 27 will not come into contact, and the arc-shaped spring piece 7 can be pressed downward; the limiting protrusion 28 is located on the side close to the conductor 27, that is, the limiting protrusion 28 is located on the upper side of the conductor 27. When the line-retraction button 19 is pressed down to the limit, the limiting protrusion 28 abuts against the conductor 27, which plays a role in limiting the sliding range of the line-retraction button 19, avoiding the line-retraction button 19 from sliding down too large, pressing the arc-shaped spring piece 7 down to exceed the range of elastic deformation, thereby damaging the arc-shaped spring piece 7.

[0035] A mounting groove 16 is provided on the upper cover 4 at the position of the cage-type spring piece 6, and an incoming line pressure piece 17 is hinged in the mounting groove 16. At least a portion of the incoming line pressure piece 17 conflicts with at least a portion of the cage-type spring piece 6. The incoming line pressure piece 17 shown in the utility model includes a manual part 171 and a pressing part 172, wherein the manual part is used to manually pry the incoming line pressure piece 17, and the pressing part 172 conflicts with the top surface of the cage-type spring piece 6.

[0036] Hinge holes are provided on both sides of the mounting groove 16, and hinge shafts 173 are provided on both sides of the incoming wire pressure piece 17. The hinge shaft 173 is rotatably installed in the hinge hole, and the manual part 171 and the pressing part 172 are respectively provided on both sides of the hinge shaft 173. When the incoming wire pressure piece 17 is pressed, the pressing part 172 is located on the side close to the center of the conductor 27, and the manual part 171 is located close to the outer end of the conductor 27.

[0037] The lower cover 3 is provided with an installation cavity 29 with an opening facing upward and having an insulating property on the outside. After the arc-shaped spring piece 7 and the cage-type spring piece 6 are installed on the conductor 27, the whole machine is installed in the installation cavity 29. After the line withdrawal button 19 and the line entry pressure piece 17 are installed on the upper cover 4, the upper cover 4 and the lower cover 3 are installed, and the terminal block 2 can be installed, so that the conductive parts of the upper cover and the lower cover are completely wrapped and insulated from the outside. No matter how this structure is installed, there will be no reverse installation, and the short circuit caused by reverse installation is eliminated.

[0038] Both ends of the conductor 27 are provided with a guiding part 14 that matches the insulating layer and the diameter of the conductive part of the wire 5 and has an upturned end. Both ends of the terminal 2 are provided with insertion holes 15 for inserting the wire 5. The function of the guiding part 14 is to make the wire 5 more smoothly inserted into the terminal 2. After the wire 5 is inserted into the insertion hole 15, the bottom surface of the part of the guiding part 14 that matches the diameter of the insulating layer of the wire 5 presses against the insulating layer of the wire 5, that is, the bottom surface of this part of the guiding part 14 is slightly lower than the topmost surface of the insertion hole 15, which will further lock the insulating layer of the wire.

[0039] The cage spring 6 shown in the present invention includes a pressure-bearing part 61, an elastic part 62, and a locking part 63 for locking the insulating layer of the wire 5. The locking part 63 has a through hole 26 for the wire 5 to pass through. The end of the conductor 27 passes through the through hole 26. Through the elastic force of the cage spring 6 itself, the bottom edge of the through hole 26 is moved towards the direction of the conductor 27 until the bottom edge of the through hole 26 abuts against the bottom surface of the conductor 27. When the cage spring 6 is pressed, the topmost surface of the through hole 26 moves towards the direction of the conductor 27 until the bottom edge of the through hole 26 is lower than the lowest position of the insertion hole 15.

[0040] After the cage spring 6 is installed, the end face of the elastic part 62 abuts against the wire-retracting button 19. Cooperating with the upturned guiding part 14, the displacement of the cage spring 6 in the front-back direction is restricted, that is, the wire-in direction or the wire-retracting direction of the wire 5. The guiding part 14 is inserted into the through hole 26, thereby restricting the displacement of the cage spring 6 in the left-right direction (perpendicular to the wire-in direction or the wire-retracting direction of the wire 5. In addition, the up-down direction is the sliding direction of the wire-retracting button 19), thereby avoiding the situation that the cage spring 6 is displaced when the incoming wire pressing part 17 is pressed down to deform the cage spring 6, which affects the wire-in operation or the wire-retracting operation of the wire 5.

[0041] The wire-in operation of this product:

[0042] First, bend the incoming wire pressing piece 17 upward (in this product, the rotation angle of the incoming wire pressing piece 17 is 90°). The incoming wire pressing piece 17 pushes the cage-shaped elastic piece 6 to deform downward, making the bottom edge of the through hole 26 lower than the lowest position of the insertion hole 15. At this time, the wire 5 is inserted from the insertion hole 15 until the insulating layer of the wire 5 passes through the through hole 26, and the conductive part of the wire 5 exceeds the elastic part 13 (the conductive part of the wire 5 squeezes the elastic part 13 towards the insertion part 12 and can pass through smoothly). At this time, the highest position of the elastic part 13 changes downward, and the wire withdrawal button 19 slides downward accordingly (at this time, the wire withdrawal button 19 is flush with the surface of the upper cover 4 or slightly lower than the surface of the upper cover 4 to avoid accidental pressing, which may cause the space between the elastic part 13 and the conductor 27 to become larger and the conductive part of the wire 5 to become loose). Finally, bend the incoming wire pressing piece 17 in the opposite direction, that is, press the incoming wire pressing piece 17. The incoming wire pressing piece 17 releases the cage-shaped elastic piece 6, and the cage-shaped elastic piece 6 uses its own elastic force to make the bottom edge of the through hole 26 tightly hold the insulating layer of the wire 5, thereby clamping the wire 5 tightly.

[0043] Wire withdrawal operation of this product:

[0044] First, bend the incoming wire pressing piece 17 upward. The incoming wire pressing piece 17 pushes the cage-shaped elastic piece 6 to deform downward, and the insulating layer of the wire 5 is released. Then press the wire withdrawal button 19 (a smaller tool is needed to press the wire withdrawal button 19 to improve protection), so that the conductive part of the wire 5 is released. At this time, the wire 5 can be withdrawn smoothly. Finally, restore the incoming wire pressing piece 17 and the wire withdrawal button 19, so that this product can be used multiple times and waste is avoided.

[0045] Refer to Figure 3 as shown in A and B, where A is the structural form of the cage-shaped elastic piece 6 and the arc-shaped elastic piece 7 after the wire 5 is inserted into the terminal block 2, and B is the structural form of the cage-shaped elastic piece 6 and the arc-shaped elastic piece 7 when the terminal block 2 is not inserted with the wire 5.

[0046] A number of buckling parts 20 are provided on the lower cover 3, and buckling holes 21 corresponding to the buckling parts 20 are provided on the upper cover 4. The upper cover 4 and the lower cover 3 are fixed through the buckling parts 20 and the buckling holes 21, and the installation is simple and stable.

[0047] Sliding pieces 22 are provided on both sides of the installation slide rail 1, and sliding grooves 23 corresponding to the sliding pieces 22 are provided on the lower cover 3. The lower cover 3 is installed in the installation slide rail 1 through the sliding pieces 22 and the sliding grooves 23.

[0048] A stop block 24 for restricting the sliding of the terminal 2 is also fixedly installed on the installation slide rail 1. The stop block 24 is fixed to the installation slide rail 1 by screws, and is used to position and clamp all the terminals 2 between the two stop blocks 24. At the same time, the stop block 24 can be installed at any position on the installation slide rail 1, which is convenient for matching with different terminal blocks.

[0049] A groove 25 is provided on the top surface of the upper cover 4, and the groove 25 is used for writing or pasting a marking number.

[0050] In the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0052] In the description of this specification, the description of terms such as "an embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A vibration-proof and anti-reverse installation crimp-free terminal block, comprising a mounting rail (1), characterized in that A plurality of arranged wiring terminals (2) are mounted on the mounting slide rail (1), and the wiring terminals (2) comprise a lower cover (3) and an upper cover (4). The lower cover (3) is mounted on the mounting slide rail (1), and a symmetrical conductor (27) is mounted inside the lower cover (3). Cage-type spring pieces (6) for clamping the insulating layer of the wire (5) are mounted at both ends of the conductor (27), and an arc-shaped spring piece (7) for pushing the conductive part of the wire (5) toward the conductor (27) and clamping it is mounted on the conductor (27).

2. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 1, characterized in that The cage-type spring sheet (6) comprises a pressure-bearing portion (61), an elastic portion (62) and a locking portion (63) for locking the insulating layer of the wire (5), and the locking portion (63) has a through hole (26) for the wire (5) to pass through.

3. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 1 or 2, characterized in that A mounting portion (8) is folded downward on one side of the conductor (27), and the arc-shaped spring sheet (7) is mounted on the mounting portion (8).

4. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 3, characterized in that The mounting portion (8) is provided with a clamping portion (9) and a limiting portion (10); a gap groove is provided between the bottom surface of the clamping portion (9) and the top surface of the limiting portion (10); the arc-shaped spring piece (7) comprises a "U"-shaped portion (11), an inserting portion (12) connected to the end of the "U"-shaped portion (11), and an elastic portion (13) for pushing the conductive portion of the wire (5) toward the conductor (27); the "U"-shaped portion (11) is clamped on the clamping portion (9), and the inserting portion (12) is inserted into the gap groove.

5. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 4, characterized in that The extending direction of the elastic portion (13) is the same as the direction in which the wire (5) is inserted into the connecting terminal (2).

6. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 4, characterized in that A through hole (18) is provided on the upper cover (4) at the location of the arc-shaped spring sheet (7), a slidable wire withdrawal button (19) is installed in the through hole (18), and at least a portion of the wire withdrawal button (19) is in contact with the elastic portion (13).

7. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 1 or 2, characterized in that The upper cover (4) is provided with a mounting groove (16) at the position of the cage-type spring piece (6), and a line-inlet pressure piece (17) is hinged in the mounting groove (16), and at least a portion of the line-inlet pressure piece (17) is in conflict with at least a portion of the cage-type spring piece (6).

8. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 1 or 2, characterized in that The two ends of the conductor (27) are provided with guide parts (14) that match the diameter of the insulation layer and the conductive part of the wire (5) and have upwardly curved ends. The two ends of the wiring terminal (2) are provided with insertion holes (15) for inserting the wire (5). When the wire (5) is inserted into the insertion hole (15), part of the bottom surface of the guide part (14) is pressed against the insulation layer of the wire (5).

9. The anti-vibration and anti-reverse installation crimp-free terminal block according to claim 1 or 2, characterized in that The lower cover (3) is provided with an installation cavity (29) with an opening facing upward and having insulation properties on the outside. When the upper cover (4) is installed in the installation cavity (29) of the lower cover (3), the conductive parts of the upper cover (4) and the lower cover (3) are wrapped and insulated from the outside.

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