Visual terminal block

Abstract

The utility model relates to the field of electrical connecting devices, and discloses a visible wiring terminal strip, which comprises an insulating base, a moving contact, a static contact, a compression screw and an elastic slip sheet. And the static contact is fixedly arranged in the inner cavity of the base, and two ends of the static contact are matched with the moving contact for clamping the wire. The moving contact is connected with an elastic slip sheet, and the elastic slip sheet slides along the inner surface of the side wall of the base. An observation window is formed in the top of the base, one end of the elastic sliding sheet is located in an observation window area and moves along with the moving contact in a lifting mode, and therefore the lifting state of the moving contact is visually displayed through position changes of the elastic sliding sheet. The device is of a mechanical structure, the terminal stroke is visualized, the wiring condition of the terminal can be rapidly judged, virtual connection of the terminal is prevented, and electrical accidents are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical connector technical field especially a visual wiring terminal strip. BACKGROUND

[0002] In electrical secondary technology field, wiring terminal strip as the basic element of realizing wire connection is widely used in industrial control cabinet, power distribution system, automation equipment and various electrical devices. Wiring terminal strip is mainly used for the linkage of wire and electrical secondary component in electrical secondary circuit to realize the function of measurement and control of secondary circuit. In the process of wiring, the wire needs to be inserted into the wiring slot of the terminal strip and locked. At present, the most commonly used terminal strip mainly uses screw and pull-back spring structure to lock the wire harness. The screw locking mode is as follows: the wire harness is placed in the slot, and the wire harness is directly locked by the screw. Another locking mode is that the wire harness is placed in the wiring slot under the static contact, the dynamic contact is connected with the screw, and the dynamic contact is moved upward by tightening the screw to lock the wire harness.

[0003] In the actual operation of the current terminal strip, the terminal stroke is blocked by the structure of the terminal body and cannot be visualized, so the operator cannot directly see the specific stroke of the dynamic contact, which leads to the fact that the wire and the internal dynamic contact and static contact of the terminal are not compressed, and the visual blind area of the operator leads to the virtual connection of the wire. The virtual connection leads to the abnormal increase of contact resistance. Under the load of power supply, the virtual connection point will continue to heat and accelerate oxidation, which may cause abnormal signal transmission or functional failure of the equipment, or even melt the insulation shell due to local high temperature, induce short circuit and even electrical fire. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in view of the above problem, provide a kind of visual wiring terminal strip, the intuitive display of dynamic contact position is realized by setting elastic slide and observation window, to facilitate user to confirm whether wire is compressed.

[0005] The utility model is realized by the following schemes:

[0006] A kind of visual wiring terminal strip, comprising:

[0007] Insulating base, top surface is provided with through-hole, compression screw passes through through-hole and is connected with dynamic contact in the inner cavity of base to drive its lifting;

[0008] Dynamic contact, setting in inner cavity, its top portion is provided with threaded hole, both sides are provided with transverse through hole, and the outer opening of through hole is communicated with wiring slot, and the inner opening is for static contact to pass through;

[0009] Static contact, fixed in inner cavity, both ends are in conductive cooperation with corresponding dynamic contact, for clamping wire;

[0010] Elastic slide is directly or indirectly driven by dynamic contact, and elastic slide slides along the inner surface of the side wall of base.

[0011] An observation window is formed in the top of the base, and the upper end of the elastic slide is located in the visible area of the observation window and moves in the observation window when the movable contact is lifted.

[0012] Further, the compression screw is matched with the threaded hole in the top of the movable contact, and is driven to lift the movable contact when rotated, thereby reducing the distance between the bottom surface of the movable contact and the fixed contact, and clamping the wire inserted into the wire slot; the movable contact drives the elastic slide to lift synchronously.

[0013] Further, the top end of the elastic slide is connected to the outer edge of the base.

[0014] Further, the top end of the movable contact extends outwardly to form a connecting rod, the connecting rod is connected to the lower end of the elastic slide, and the elastic slide is elastically folded to slide along the shape of the side wall of the base.

[0015] Further, the fixed contact is in the shape of a horizontal bar, and the two ends are respectively inserted into the horizontal through holes of the two movable contacts.

[0016] Further, the fixed contact is fixed by a limiting structure arranged in the inner cavity of the base, and the limiting structure is used to limit the upward movement of the fixed contact when the compression screw is rotated.

[0017] Further, two through holes are arranged in the top of the insulating base, and an observation window is arranged on the outer side of each through hole; two compression screws are respectively inserted through the corresponding through holes and are threadedly connected with the two movable contacts in the inner cavity, so as to drive the movable contacts to lift in the inner cavity.

[0018] Further, the upper part of the base is in the shape of a trapezoid, and the lower part is in the shape of a rectangle, that is, the top of the base includes a part of the inclined wall, and the observation window is formed in the inclined wall.

[0019] Further, a ventilation hole is formed in the center of the top of the base, the through holes are symmetrically arranged on both sides of the ventilation hole, and the observation window is arranged on the outer side of the through hole.

[0020] Further, a guide rib is arranged in the inner cavity of the base, the guide rib is below the observation window, the guide shape of the guide rib is matched with the inclined wall of the base and a sliding channel is left between the guide rib and the inclined wall, and the elastic slide is arranged in the sliding channel and can slide along the shape of the inclined wall.

[0021] As described above, the beneficial effects of the utility model are as follows:

[0022] (1) The terminal stroke is visualized, the terminal wiring condition can be quickly judged, the virtual connection of the terminal is prevented, and the occurrence of electrical accidents is prevented;

[0023] (2) The mechanical structure has no complex electrical circuit and has no influence on the terminal insulation and the like;

[0024] (3) The structure is simple, reliable and easy to realize;

[0025] (4) Low cost, easy to promote. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the internal structure diagram of the base of the utility model;

[0027] Figure 2 is the top surface diagram of the base of the utility model;

[0028] Figure 3 is the side surface diagram of the base of the utility model;

[0029] Figure 4 is the explosion view of the base of the utility model;

[0030] Reference signs:

[0031] 1-base;11-through hole;12-guide rib;2-moving contact;21-thread hole;22-connecting rod;3-elastic slide;4-view window;5-pressing screw;6-static contact;7-vent hole;8-wiring slot. DETAILED DESCRIPTION

[0032] All features disclosed in this specification, and all methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0033] Any of the features disclosed in this specification, unless explicitly stated otherwise, can be replaced by alternative features serving the same, equivalent or similar purpose.

[0034] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0035] In addition, the terms "first", "second", and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0036] Embodiment one

[0037] As Figures 1 to 4As shown, a visual terminal block is provided, including an insulating plastic base 1. The upper part of the base is trapezoidal, and the lower part is rectangular, that is, the top of the base includes a partial sloping wall, and an observation window 4 is opened on the sloping wall. The top of the insulating base has two through holes 11, and two clamping screws 5 pass through the corresponding through holes 11 and are threaded to two moving contacts 2 respectively. A vent hole 7 is opened in the center of the top of the base, and the through holes 11 are symmetrically arranged on both sides of the vent hole 7. The observation window 4 is located on the outside of the through holes 11.

[0038] The moving contact 2 is located in the inner cavity of the base and can be raised and lowered in the vertical direction. Its top is provided with a threaded hole 21 that mates with the clamping screw 5. Its two sides are transversely connected to form an opening. The outer opening of the opening is connected to the wiring groove 8, and the inner opening allows the stationary contact 6 to pass through.

[0039] The stationary contact 6 is a horizontal strip and is fixed in the inner cavity of the base by a limiting structure to restrict its upward movement when the clamping screw 5 rotates. Its two ends pass through the transverse through-holes of the two moving contacts 2, respectively, and electrically engage with the corresponding moving contacts 2. When not in use, it contacts the upper inner wall of the moving contacts 2. Preferably, the limiting structure of the stationary contact 6 is the clamping screw 5, with both ends of the stationary contact 6 extending to the outside of the through-holes of the moving contacts 2, covering the threaded hole 21. This allows the stationary contact 6 to contact the bottom end of the clamping screw 5. Due to the restriction at the bottom end of the clamping screw 5, the corresponding stationary contact 6 is pressed against the bottom surface of the moving contact 2 and cannot move upward.

[0040] The top outer edge of the moving contact 2 is connected to an elastic slider 3. Preferably, the top of the moving contact 2 extends outward to both sides to the inner wall of the base via connecting rods 22. The end of the connecting rods 22 is connected to the lower end of the elastic slider 3. The elastic slider 3 can be bent and move along the inner wall surface of the base. The elastic slider 3 is made of a certain elastic deformable material, such as a plastic sheet, polymer sheet, or other insulating strip. It bends with the channel and changes according to the height. The upper end of the elastic slider 3 is marked with a scale in the observation window 4, so that the position change of the elastic slider 3 can be used to visually display the lifting and lowering state of the moving contact 2.

[0041] When the clamping screw 5 rotates, it drives the moving contact 2 to rise, and the distance between the bottom surface of the moving contact 2 and the stationary contact 6 decreases, so as to clamp the wire inserted into the wiring slot 8; at the same time, the moving contact 2 drives the elastic slider 3 to rise and fall synchronously.

[0042] An observation window 4 is provided on the outside of each through hole 11 to realize reliable connection of the wire and intuitive monitoring of the connection status; due to the shape of the inclined wall, the upper end of the elastic slider 3 is restricted by bending and cannot protrude outside the observation window 4. When the moving contact 2 rises and falls, it moves back and forth within the visible area of ​​the observation window 4 to show the rising and falling position of the moving contact 2.

[0043] Example 2

[0044] Figure 1As shown, the difference between this embodiment and the above embodiments is that a guide rib 12 is provided in the inner cavity of the base. The guide rib 12 is below the observation window 4. Its guiding shape is adapted to the inclined wall of the base and a sliding channel is left between them. The elastic slider 3 passes through the sliding channel and can slide along the shape of the inclined wall.

[0045] Example 3

[0046] The difference between this embodiment and the above embodiments is that the limiting structure of the stationary contact 6 is a vent hole 7 channel. The middle part of the stationary contact 6 is in contact with the lower end face of the vent hole 7 channel on the top of the base. Due to the restriction of the channel, it cannot move upward.

[0047] Example 4

[0048] The difference between this embodiment and the above embodiments is that the limiting structure of the stationary contact 6 is a fixed buckle provided in the inner cavity, and the stationary contact 6 is fixed on the fixed buckle.

[0049] The specific usage method is as follows:

[0050] The wire is inserted into the wiring slot 8, and both ends of the stationary contact 6 are inserted into the through-hole of the moving contact 2. Rotating the clamping screw 5 causes the moving contact 2 to move upward, reducing the gap between the moving contact 2 and the stationary contact 6, thus clamping the wire. Simultaneously, the moving contact 2 is connected to the lower end of the elastic slider 3, causing it to move upward. The upper end of the elastic slider 3 slides within the observation window 4, which has graduations of 0, 50, and 100. The rising height of the elastic slider 3 synchronously reflects the rising height of the moving contact 2. Based on the actual wiring size and the height of the elastic slider 3 in the observation window 4, it is possible to determine whether the terminal is clamped, thus visualizing the terminal travel. The elastic slider 3 is made of insulating material and does not affect the overall insulation performance of the terminal block.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A visual terminal block, characterized in that, include: An insulating base (1) has a through hole (11) on its top surface. A clamping screw (5) passes through the through hole (11) and connects to a moving contact (2) in the inner cavity of the base (1) to drive its lifting and lowering. The moving contact (2) is located in the inner cavity. A threaded hole (21) is provided on its top, and transverse through-holes are provided on both sides. The outward opening of the through-hole is connected to the wiring groove (8), and the inner opening allows the stationary contact (6) to pass through. The stationary contact (6) is fixed in the inner cavity, and its two ends are electrically connected with the corresponding moving contact (2) for clamping the wire; The elastic slider (3) is driven directly or indirectly by the moving contact (2), and the elastic slider (3) slides along the inner surface of the side wall of the base (1); An observation window (4) is provided on the top of the base (1). The upper end of the elastic slider (3) is located within the visible area of ​​the observation window (4) and moves within the observation window (4) when the moving contact (2) is raised or lowered.

2. A visual terminal block as described in claim 1, characterized in that, The clamping screw (5) engages with the threaded hole (21) at the top of the moving contact (2). When rotated, it drives the moving contact (2) to rise, reducing the distance between the bottom surface of the moving contact (2) and the stationary contact (6), which is used to clamp the wire inserted into the wiring slot (8). The moving contact (2) drives the elastic slide (3) to rise and fall synchronously.

3. A visual terminal block as described in claim 1, characterized in that, Its top outer edge is connected to the elastic slider (3).

4. A visual terminal block as described in claim 1, characterized in that, The top of the moving contact (2) extends outward to form a connecting rod (22), which is connected to the lower end of the elastic slider (3). The elastic slider (3) can be bent and slide up and down along the shape of the side wall of the base (1).

5. A visual terminal block as described in claim 1, characterized in that, The stationary contact (6) is a horizontal strip, with both ends inserted into the transverse through-holes of the moving contacts (2) on both sides.

6. A visual terminal block as described in claim 1, characterized in that, The stationary contact (6) is fixed by a limiting structure provided in the inner cavity of the base (1), which is used to restrict the stationary contact (6) from moving upward when the clamping screw (5) rotates.

7. A visual terminal block as described in claim 1, characterized in that, The insulating base (1) has two through holes (11) on its top, and an observation window (4) is provided on the outside of each through hole (11); two clamping screws (5) pass through the corresponding through holes (11) and are threadedly connected to the two moving contacts (2) in the inner cavity to drive the moving contacts (2) to rise and fall in the inner cavity.

8. A visual terminal block as described in claim 1, characterized in that, The upper part of the base (1) is trapezoidal and the lower part is rectangular. That is, the top of the base (1) includes a partial sloping wall, and the observation window (4) is opened on the sloping wall.

9. A visual terminal block as described in claim 1, characterized in that, The base (1) has a ventilation hole (7) in the center of the top, and the through hole (11) is symmetrically arranged on both sides of the ventilation hole (7). The observation window (4) is located outside the through hole (11).

10. A visual terminal block as described in claim 1, characterized in that, The base (1) has a guide rib (12) in its inner cavity. The guide rib (12) is below the observation window (4). Its guide shape is adapted to the inclined wall of the base (1) and a sliding channel is left between them. The elastic slide (3) passes through the sliding channel and can slide along the shape of the inclined wall.

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