Large-current wiring terminal with tool unlocking function

Abstract

The utility model discloses a heavy-current wiring terminal with a tool unlocking function, which comprises an insulation main body, a rear end of the insulation main body is provided with a plugging part, and an outer side of the plugging part is provided with a buckle; the current guide strip is mounted in the insulating main body, and two ends of the current guide strip respectively extend out of the front and rear sides of the insulating main body; the front end of the protective shell is provided with an inserting groove matched with the inserting part, the outer side of the inserting groove is provided with a clamping part, the front side of the clamping part is provided with a clamping groove matched with the buckle, the middle of the clamping part is provided with an unlocking groove penetrating up and down, and the unlocking groove is communicated with the clamping groove; one end of the unlocking piece is provided with an unlocking part matched with the unlocking groove; when the inserting part is inserted into the inserting groove, the end part of the buckle extends to the unlocking groove and is clamped with the clamping groove; and when the unlocking part is inserted into the unlocking groove, the clamping state of the buckle and the clamping groove is released. According to the utility model, the protective shell can be pulled out from the insulating main body only by using the unlocking sheet, so that the possibility of unlocking by mistaken touch is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, in particular to a high-current wiring terminal with tool unlocking. Background Art

[0002] In the field of electrical connection, high current terminal blocks play a vital role, especially in power transmission and distribution systems that need to carry high current and high voltage. With the continuous development of power technology and the widespread application of electrical equipment, the performance requirements for high current terminal blocks are getting higher and higher.

[0003] According to market needs, more and more high-current terminal blocks are used in various electrical connection products. Since the terminal blocks need to be plugged in and out for replacement or maintenance, but they also need to be tightened, most high-current terminal blocks are designed not to require special unlocking tools. They are mainly threaded or side-pinched unlocking structures, but this structure is easily unlocked by accident, which poses a safety hazard during use. Therefore, in order to solve this problem, it is necessary to develop a high-current terminal block with a special unlocking tool to meet market needs. Utility Model Content

[0004] In order to overcome the problem in the prior art that high-current wiring terminals are easily unlocked by accidental touch, which poses a potential safety hazard during use, the utility model provides a high-current wiring terminal with a tool for unlocking.

[0005] The technical solution of the utility model is as follows:

[0006] A high current terminal block with a tool for unlocking, comprising:

[0007] An insulating body, wherein a plug-in portion is provided at the rear end of the insulating body, and a buckle is provided at the outer side of the plug-in portion;

[0008] A guide bar is installed in the insulating body, and two ends of the guide bar extend out of the front and rear sides of the insulating body respectively;

[0009] A protective shell, wherein a plug-in slot matching the plug-in portion is disposed at the front end of the protective shell, a clamping portion is disposed on the outer side of the plug-in slot, a clamping slot matching the buckle is disposed at the front side of the clamping portion, an unlocking slot penetrating from top to bottom is disposed in the middle of the clamping portion, and the unlocking slot is communicated with the clamping slot;

[0010] An unlocking piece, one end of which is provided with an unlocking portion that matches the unlocking groove;

[0011] When the plug-in portion is inserted into the plug-in slot, the end of the buckle extends to the unlocking slot and is in a snap-fit ​​state with the slot;

[0012] When the unlocking portion is inserted into the unlocking slot, the engagement state between the buckle and the slot is released.

[0013] As a preferred solution of the utility model, the connection between the locking slot and the unlocking slot forms a buckle position, the thickness of the unlocking portion gradually increases from the head end to the tail end, and the inner side of the unlocking portion has two insertion inclined surfaces symmetrically arranged along the length direction of the unlocking portion;

[0014] When the plug-in portion is inserted into the plug-in slot, the end of the buckle extends to the unlocking slot and buckles into the buckle position, so that the buckle and the slot are in a locked state;

[0015] When the unlocking portion is inserted into the unlocking slot, the insertion slope close to the end of the buckle gradually pushes the end of the buckle away from the buckle position to release the engagement state between the buckle and the slot.

[0016] As a preferred solution of the utility model, two oppositely arranged buckles are provided on the outer side of the plug-in part, two oppositely arranged clamping parts are provided on the outer side of the plug-in slot, and two oppositely arranged unlocking parts are provided at one end of the unlocking piece.

[0017] As a preferred solution of the utility model, the outer wall of the plug-in portion is provided with a first sealing ring installation groove, and a connecting sealing ring is installed in the first sealing ring installation groove.

[0018] As a preferred solution of the utility model, a second sealing ring installation groove is provided at the front end of the insulating body, and a socket sealing ring is installed in the second sealing ring installation groove.

[0019] As a preferred solution of the utility model, a receiving cavity penetrating from front to back and used for receiving the guide bar is provided in the insulating body.

[0020] As a preferred solution of the utility model, a first nut is provided at the front end of the guide bar, and a wire nose is connected to the rear end of the guide bar.

[0021] As a preferred solution of the utility model, a nut installation groove is provided at the bottom of the rear end of the receiving cavity, a second nut is installed in the nut installation groove, and the second nut cooperates with a screw to connect the rear end of the guide strip with the front end of the wire nose.

[0022] As a preferred solution of the utility model, a third sealing ring installation groove is provided at the rear end opening of the protective shell, and a cable sealing ring is installed in the third sealing ring installation groove.

[0023] As a preferred solution of the utility model, a tail cover is connected to the rear end of the protective shell, and the tail cover restricts the cable sealing ring within the third sealing ring installation groove.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] 1. By designing a specific unlocking mechanism and protective shell, the protective shell can be pulled out from the insulating body only when a special tool (i.e., unlocking piece) is used, which greatly reduces the possibility of accidental unlocking, thereby reducing the risk of safety accidents caused by misoperation;

[0026] 2. The setting of the buckle and the slot makes the connection between the insulating body and the protective shell more stable and reliable, reducing the risk of electrical failure caused by loosening or falling off;

[0027] 3. The two symmetrically arranged insertion slopes on the inner side of the unlocking part make the unlocking process smoother, reducing the risk of accidental unlocking due to improper operation, and making it possible for the unlocking piece to effectively push the buckle away from the buckle position when inserting upward or downward, thereby increasing the flexibility of operation;

[0028] 4. The unlocking piece has a symmetrical structure. Users do not need to worry about the specific direction of the unlocking piece. After aligning the unlocking part with the unlocking slot, the unlocking part can be easily inserted into the unlocking slot from any side, reducing the operation steps and complexity, making the use process smoother and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0031] Figure 2 An exploded view of an embodiment of the utility model;

[0032] Figure 3 A cross-sectional view of an insulating body in one embodiment of the utility model;

[0033] Figure 4 A cross-sectional view of a protective shell in one embodiment of the utility model;

[0034] Figure 5 It is a front view of an unlocking piece in one embodiment of the utility model;

[0035] Figure 6 A top view of an unlocking piece in one embodiment of the utility model;

[0036] Figure 7 It is a structural schematic diagram of a buckle being buckled into a buckle position in one embodiment of the utility model;

[0037] Figure 8 It is a structural schematic diagram of using an unlocking piece to push the buckle away from the buckle position in one embodiment of the utility model.

[0038] In the figure:

[0039] 1. Insulating body; 101. Receiving cavity; 102. Plug-in part; 1021. First sealing ring installation groove; 103. Buckle; 104. Second sealing ring installation groove; 105. Nut installation groove; 2. Guide strip; 3. Protective shell; 301. Plug-in groove; 302. Snap-in part; 303. Slot; 304. Unlocking groove; 305. Buckle position; 306. Third sealing ring installation groove; 4. Unlocking piece; 401. Unlocking part; 4011. Insertion slope; 5. Connecting sealing ring; 6. Socket sealing ring; 7. First nut; 8. Wire nose; 9. Second nut; 10. Screw; 11. Cable sealing ring; 12. Tail cover. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the utility model and are not used to limit the utility model.

[0041] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] See also Figures 1 to 8 , this embodiment provides a tool-unlocked high-current terminal block, comprising an insulating body 1, a guide bar 2, a protective shell 3, and an unlocking piece 4. A receiving cavity 101 for receiving the guide bar 2 is provided in the insulating body 1, and a plug-in portion 102 is provided at the rear end of the insulating body 1, and a buckle 103 is provided on the outside of the plug-in portion 102. The guide bar 2 is installed in the receiving cavity 101 of the insulating body 1, and the two ends of the guide bar 2 extend out of the front and rear sides of the insulating body 1 respectively. A plug-in slot 301 matching with the plug-in portion 102 is provided at the front end of the protective shell 3, and a buckle 302 is provided on the outside of the plug-in slot 301. A clamping slot 303 matching with the buckle 103 is provided on the front side of the clamping portion 302, and an unlocking slot 304 running through from top to bottom is provided in the middle of the clamping portion 302, and the unlocking slot 304 is connected with the clamping slot 303. An unlocking portion 401 matching with the unlocking slot 304 is provided at one end of the unlocking piece 4. When the plug-in portion 102 of the insulating body 1 is inserted into the plug-in slot 301 of the protective shell 3, the end of the buckle 103 extends to the unlocking slot 304 and is in a locked state with the locking slot 303. At this time, the protective shell 3 cannot be pulled out from the insulating body 1. When the unlocking portion 401 of the unlocking piece 4 is inserted into the unlocking slot 304, the locking state of the buckle 103 and the locking slot 303 is released. At this time, the protective shell 3 can be pulled out from the insulating body 1, and the user can replace, inspect and maintain the product.

[0043] The tool-unlocked high-current terminal block provided in the present embodiment has a specific unlocking mechanism and a protective shell 3, and the protective shell 3 can be pulled out from the insulating body 1 only when a special tool (i.e., the unlocking piece 4) is used, which greatly reduces the possibility of accidental unlocking, thereby reducing the risk of safety accidents caused by misoperation; the setting of the insulating body 1 ensures the electrical insulation performance of the terminal block, and the presence of the protective shell 3 further enhances the protection performance and reduces the influence of the external environment on the terminal block; the setting of the buckle 103 and the slot 303 makes the connection between the insulating body 1 and the protective shell 3 more stable and reliable, reducing the risk of electrical failure caused by loosening or falling off.

[0044] See also Figures 4 to 8In one embodiment, a buckle position 305 is formed at the connection between the card slot 303 and the unlocking slot 304, the thickness of the unlocking portion 401 gradually becomes thicker from the head end to the tail end, and the inner side of the unlocking portion 401 has two insertion inclined surfaces 4011 symmetrically arranged along the length direction of the unlocking portion 401; when the plug-in portion 102 of the insulating body 1 is inserted into the plug-in slot 301 of the protective shell 3, the end of the buckle 103 extends to the unlocking slot 304 and buckles into the buckle position 305, so that the buckle 103 and the card slot 303 are in a snap-fit ​​state, and the protective shell 3 cannot be pulled out from the insulating body 1 at this time; when the unlocking portion 401 of the unlocking piece 4 is inserted upward or downward into the unlocking slot 304, the insertion inclined surface 4011 close to the end of the buckle 103 gradually pushes the end of the buckle 103 away from the buckle position 305 to release the snap-fit ​​state between the buckle 103 and the card slot 303, and the protective shell 3 can be pulled out from the insulating body 1. The unique arrangement of the card slot 303 and the unlocking slot 304, in conjunction with the buckle position 305, ensures that the engaging state of the buckle 103 and the card slot 303 can be released only under the action of the unlocking piece 4, greatly reducing the possibility of accidental unlocking and improving safety during use; the two symmetrically arranged insertion slopes 4011 on the inner side of the unlocking portion 401 make the unlocking process smoother, reducing the risk of accidental unlocking due to improper operation, and making it possible for the unlocking piece 4 to effectively push the buckle 103 away from the buckle position 305 when the unlocking piece 4 is inserted upward or downward, thereby increasing the flexibility of operation; and the thickness of the unlocking portion 401 gradually becomes thicker from the head end to the tail end, so that when the unlocking piece 4 is inserted into the unlocking slot 304, it can gradually apply force, thereby smoothly pushing the buckle 103 away from the buckle position 305 to achieve unlocking.

[0045] See also Figures 3 to 5 In one embodiment, two oppositely disposed buckles 103 are disposed on the outside of the plug-in portion 102, two oppositely disposed snap-in portions 302 are disposed on the outside of the plug-in slot 301, and two oppositely disposed unlocking portions 401 are disposed at one end of the unlocking piece 4, and the unlocking piece 4 is a symmetrical structure. Since the unlocking piece 4 is symmetrically designed, the user does not need to care about the specific direction of the unlocking piece 4. After aligning the unlocking portion 401 with the unlocking slot 304, the unlocking portion 401 can be easily inserted into the unlocking slot 304 from any side, which reduces the operation steps and complexity, makes the use process smoother, and enhances the user experience;

[0046] See also Figure 2 , Figure 3 In one embodiment, a first sealing ring installation groove 1021 is provided on the outer wall of the plug-in part 102, and a connecting sealing ring 5 is installed in the first sealing ring installation groove 1021. The connecting sealing ring 5 can enhance the sealing performance between the plug-in part 102 and the plug-in groove 301, prevent foreign substances such as liquid, gas or dust from entering, and ensure the safety and stability of the electrical connection.

[0047] See also Figures 1 to 8 In one embodiment, a second sealing ring installation groove 104 is provided at the front end of the insulating body 1, and a socket sealing ring 6 is installed in the second sealing ring installation groove 104. The socket sealing ring 6 is used to provide additional sealing protection when the insulating body 1 is connected to the socket to prevent foreign substances such as liquid, gas or dust from entering the inside of the insulating body 1 and affecting the normal operation of the electrical connection.

[0048] See also Figures 1 to 8 In one embodiment, a first nut 7 is riveted on the front end of the guide bar 2 to facilitate wiring at the front end of the guide bar 2. A wire nose 8 is connected to the rear end of the guide bar 2 to facilitate connection of the rear end of the guide bar 2 with a cable or wire. Specifically, a nut mounting groove 105 is provided at the bottom of the rear end of the accommodating cavity 101, and a second nut 9 is installed in the nut mounting groove 105. The second nut 9 cooperates with the screw 10 to connect the rear end of the guide bar 2 with the front end of the wire nose 8. Through the cooperation of the second nut 9 and the screw 10, a stable and reliable connection between the guide bar 2 and the wire nose 8 is ensured, reducing the risk of current instability or safety accidents caused by loose connection, and ensuring that the current can be stably and safely transmitted from the wire nose 8 to the guide bar 2.

[0049] In some specific embodiments, the second nut 9 is an M6 hexagonal nut, and the screw 10 is an ML hexagon socket washer combination screw.

[0050] See also Figure 1 , Figure 2 , Figure 4 In one embodiment, a third sealing ring installation groove 306 is provided at the rear opening of the protective shell 3, and a cable sealing ring 11 is installed in the third sealing ring installation groove 306. The cable sealing ring 11 can ensure that the cable can fit tightly with the cable sealing ring 11 when passing through the protective shell 3, forming an effective seal to prevent foreign substances (such as liquids, dust, etc.) from entering the protective shell 3 through the gap between the cable and the protective shell 3. At the same time, the rear end of the protective shell 3 is connected to a tail cover 12, which restricts the cable sealing ring 11 in the third sealing ring installation groove 306, ensuring that the cable sealing ring 11 will not shift or fall off when subjected to the tension of the cable or external pressure.

[0051] The composition of the tool-unlocking high-current terminal block of the utility model is as follows:

[0052] 1) Install the connection sealing ring 5 and the socket sealing ring 6 on the first sealing ring installation groove 1021 and the second sealing ring installation groove 104 of the insulating body 1 respectively;

[0053] 2) Install the second nut 9 on the nut installation groove 105 of the insulating body 1;

[0054] 3) Install the guide bar 2 on the receiving cavity 101 of the insulating body 1, and align the rear end of the guide bar 2 with the hole of the second nut 9;

[0055] 4) Align the hole at the front end of the wire nose 8 with the hole of the second nut 9 and install it on the rear end of the guide bar 2, and tighten it with the screw 10;

[0056] 5) Install the cable sealing ring 11 in the third sealing ring installation groove 306 at the rear end of the protective shell 3, and cover the tail cover 12;

[0057] 6) Align the buckle 103 of the insulating body 1 with the buckle slot 303 of the protective shell 3 for installation. When you hear the buckle 103 snap into the buckle position 305, the installation is complete.

[0058] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0059] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A high current terminal block with tool unlocking, characterized in that: include: An insulating body, wherein a plug-in portion is provided at the rear end of the insulating body, and a buckle is provided at the outer side of the plug-in portion; A guide bar is installed in the insulating body, and two ends of the guide bar extend out of the front and rear sides of the insulating body respectively; A protective shell, wherein a plug-in slot matching the plug-in portion is disposed at the front end of the protective shell, a clamping portion is disposed on the outer side of the plug-in slot, a clamping slot matching the buckle is disposed at the front side of the clamping portion, an unlocking slot penetrating from top to bottom is disposed in the middle of the clamping portion, and the unlocking slot is communicated with the clamping slot; An unlocking piece, one end of which is provided with an unlocking portion that matches the unlocking groove; When the plug-in portion is inserted into the plug-in slot, the end of the buckle extends to the unlocking slot and is in a snap-fit ​​state with the slot; When the unlocking portion is inserted into the unlocking slot, the engagement state between the buckle and the slot is released.

2. The tool-unlocked high-current terminal block according to claim 1, characterized in that: A buckle position is formed at the connection between the locking slot and the unlocking slot, the thickness of the unlocking portion gradually increases from the head end to the tail end, and the inner side of the unlocking portion has two insertion inclined surfaces symmetrically arranged along the length direction of the unlocking portion; When the plug-in portion is inserted into the plug-in slot, the end of the buckle extends to the unlocking slot and buckles into the buckle position, so that the buckle and the slot are in a locked state; When the unlocking portion is inserted into the unlocking slot, the insertion slope close to the end of the buckle gradually pushes the end of the buckle away from the buckle position to release the engagement state between the buckle and the slot.

3. The tool-unlocked high-current terminal block according to claim 1, characterized in that: Two oppositely disposed buckles are arranged on the outer side of the plug-in portion, two oppositely disposed clamping portions are arranged on the outer side of the plug-in slot, and two oppositely disposed unlocking portions are arranged at one end of the unlocking piece.

4. The tool-unlocked high-current terminal block according to claim 1, characterized in that: The outer wall of the plug-in portion is provided with a first sealing ring installation groove, and a connecting sealing ring is installed in the first sealing ring installation groove.

5. The tool-unlocked high-current terminal block according to claim 4, characterized in that: A second sealing ring installation groove is arranged at the front end of the insulating body, and a socket sealing ring is installed in the second sealing ring installation groove.

6. The tool-unlocked high-current terminal block according to claim 1, characterized in that: The insulating body is provided with a receiving cavity which penetrates front and back and is used for receiving the guide bar.

7. The tool-unlocked high-current terminal block according to claim 6, characterized in that: The front end of the guide bar is provided with a first nut, and the rear end of the guide bar is connected with a wire nose.

8. The tool-unlocked high-current terminal block according to claim 7, characterized in that: A nut installation groove is provided at the bottom of the rear end of the receiving cavity, and a second nut is installed in the nut installation groove. The second nut cooperates with a screw to connect the rear end of the guide strip with the front end of the wire nose.

9. The tool-unlocked high-current terminal block according to claim 1, characterized in that: A third sealing ring installation groove is provided at the rear end opening of the protective shell, and a cable sealing ring is installed in the third sealing ring installation groove.

10. The tool-unlocked high-current terminal block according to claim 9, characterized in that: The rear end of the protective shell is connected with a tail cover, and the tail cover restricts the cable sealing ring within the third sealing ring installation groove.

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