Anti-loosening electrical equipment wiring terminal fixing device

Abstract

The invention discloses an anti-loosening electrical equipment wiring terminal fixing device, and relates to the technical field of wiring terminal fixing devices. Comprising a middle block, at least one first side block is movably arranged on the two sides of the middle block, the number of the first side blocks on the two sides is equal, the first side blocks are symmetrically arranged on the two sides of the middle block, and a second side block is arranged on the side face of each first side block. The device is provided with the middle block, the first side block and the second side block, the device can turn over the first side block or the second side block according to the number of to-be-fixed power equipment wiring terminals, and the turned-down first side block or the turned-down second side block 3 is fixed to the middle block through the positioning assembly; therefore, when the number of the terminals is increased, the whole fixing device does not need to be replaced, the replacement cost is reduced, and the downtime of the equipment is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of terminal fixing devices, in particular to a loose-proof terminal fixing device for electric power equipment. Background Art

[0002] Terminal blocks are accessories used to achieve electrical connections and are classified as connectors in the industry. With the increasing degree of industrial automation and increasingly stringent and precise industrial control requirements, the use of terminal blocks is gradually increasing.

[0003] Chinese invention patent application publication number CN119787032A discloses a quick-connect terminal fixing device. Under the action of a quick clamping structure, the clamping plate can cooperate with the fixed round rod and the sliding cylinder to make it more convenient to insert the terminal head into the inner wall of the fixed frame. At the same time, under the action of the guide wheel, the insertion is more time-saving and labor-saving. At the same time, under the action of the threaded rod, the rubber round protrusion can cooperate with the rubber ring block for fixation, and then after the terminal head is inserted, it can cooperate with the clamping plate for auxiliary fixation. The entire clamping process is simple to operate, saving time and effort.

[0004] The above-mentioned scheme and the existing terminal fixture are generally fixed in length, and the number of sockets on the terminal fixture is equal to the number of terminals to be fixed in the electrical equipment. However, there are still certain defects in actual application. For example, during the use of electrical equipment, the number of terminals may change due to upgrades, modifications, etc. The number of sockets in the existing fixture is equal to the number of terminals to be fixed, so when the number of terminals increases, the entire fixture needs to be replaced, which not only increases the replacement cost, but may also lead to extended equipment downtime, affecting production efficiency. Summary of the Invention

[0005] The object of the present invention is to provide a device for fixing a terminal block of an electric power device to prevent loosening, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for fixing a terminal block for electric power equipment to prevent loosening, comprising a central block, at least one first side block being movably provided on both sides of the central block, the number of the first side blocks on both sides being equal and symmetrically provided on both sides of the central block, and a second side block being provided on the side of the first side block;

[0007] At least five mounting grooves are opened in the middle of the middle block, and one mounting groove is opened in the middle of the first side block and the second side block, and the terminal head is installed in the mounting groove;

[0008] A fixing device is provided in the installation groove, and the terminal head in the installation groove is fixed by the fixing device;

[0009] A positioning assembly is provided on the front or back of the middle block, and the first side blocks and the second side blocks on both sides are fixed to the middle block through the positioning assembly;

[0010] Both sides of the top of the middle block are provided with middle placement grooves, which are adapted to the first side block and the second side block. The top of the first side block is provided with a first side block placement groove, which is adapted to the second side block.

[0011] A first limiting member is provided on one side of the middle placement groove. When the first side block and the second side block are located in the middle placement groove, the first side block and the second side block are limited by the first limiting member.

[0012] A second limiting member is provided on one side of the first side block placement groove. When the second side block is located in the first side block placement groove, the second side block is limited by the second limiting member.

[0013] Furthermore, the fixing device includes two clamping blocks, at least one guide rod is fixed between the bottom and top groove walls of the installation groove, and the guide rod is movably connected to the clamping blocks;

[0014] A double-ended screw is movably connected to one side of the mounting slot, and the two clamping blocks are movably screwed to the clamping blocks respectively. A knob is fixed on the end of the double-ended screw. When the double-ended screw rotates, the two clamping blocks are driven to move toward or away from each other.

[0015] Furthermore, elastic plates are fixed to opposite sides of the two clamping blocks.

[0016] Furthermore, a cable limiting assembly is provided on the outside of the installation groove, and the cable limiting assembly includes a connecting shaft movably connected to the top and bottom of the installation groove, an extension plate is connected to the shaft body of the connecting shaft, and a clamping plate is fixed to the end of the extension plate. The opposite sides of the two clamping plates are formed with arc grooves. When the two clamping plates are put together, the two arc grooves form a clamping groove, and the clamping groove is adapted to the terminal wire of the terminal head;

[0017] Two guide grooves are provided on the side of one extension plate, and two vertical screw rods are fixed on the plate body of the other extension plate. The guide grooves are adapted to the vertical screw rods, and fastening nuts are movably screwed on the rod bodies of the vertical screw rods.

[0018] Furthermore, the positioning assembly includes slots provided on the middle block, the first side block and the second side block, a plug-in plate is movably inserted into the slot of the middle block, and a plurality of limiting screw holes connected to the slots are provided on the side of the middle block;

[0019] A connecting screw rod is movably screwed on the side surface of the plug plate, and the connecting screw rod is matched with the limiting screw hole.

[0020] Furthermore, a threaded tube is fixed to the side surface of the inserting plate, and the threaded tube is movably threadedly connected to the connecting screw.

[0021] Furthermore, the side surface of the middle placement groove is movably connected to a first movable shaft, the shaft body of the first movable shaft is connected to a first connecting plate, and the first connecting plate is fixed to the side surface of the first side block;

[0022] The side surface of the first side block placement groove is movably connected with a second movable shaft, the shaft body of the second movable shaft is connected with a second connecting plate, and the second connecting plate is fixed to the side surface of the second side block.

[0023] Furthermore, the first limiting member includes a first plug rod movably connected to the middle block, a first pull plate is fixed to the end of the first plug rod, and a first spring is fixed between the middle block and the first pull plate;

[0024] A first insertion hole is provided on the outer side of the second side block, and the first insertion hole is adapted to the first insertion rod.

[0025] Furthermore, the second limiting member includes a second plug rod movably connected to the first side block, a second pull plate is fixed to the end of the second plug rod, and a second spring is fixed between the first side block and the second pull plate;

[0026] A second insertion hole is provided on the outer side of the second side block, and the second insertion hole is adapted to the second insertion rod.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The anti-loosening fixing device for power equipment terminals is provided with a middle block, a first side block and a second side block. The device can flip the first side block or the second side block according to the number of power equipment terminals to be fixed, and fix the flipped first side block or the second side block 3 to the middle block through the positioning component, so that the number of mounting slots is adapted to the number of power equipment terminals. In this way, when the number of terminals increases, there is no need to replace the entire fixing device, which reduces replacement costs and equipment downtime.

[0029] At the same time, a fixing device and a cable limiting assembly are provided. The terminal head is clamped and fixed by the fixing device, and the terminal wire is clamped and fixed by the cable limiting assembly, thereby effectively preventing the power equipment terminal and the fixing device from loosening due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a left side axial view of the present invention;

[0031] Figure 2 A bottom view of the present invention;

[0032] Figure 3 A half-section view of the clamping assembly and the cable limiting assembly of the present invention;

[0033] Figure 4 A top view of the present invention;

[0034] Figure 5 An exploded view of the positioning assembly and the middle block of the present invention;

[0035] Figure 6 This is a first usage state diagram of the present invention;

[0036] Figure 7 This is a second usage state diagram of the present invention.

[0037] In the figure: 1, middle block; 101, middle placement slot; 2, first side block; 201, first side block placement slot; 3, second side block; 4, positioning assembly; 401, slot; 402, plug-in board; 403, threaded tube; 404, connecting screw; 405, limiting screw hole; 501, clamping block; 502, double-headed screw; 503, knob; 504, elastic plate; 6, cable limiting assembly; 601, connecting shaft; 60 2. Extension plate; 603. Clamping plate; 604. Vertical screw; 605. Fastening nut; 701. First movable shaft; 702. First connecting plate; 703. Second movable shaft; 704. Second connecting plate; 801. First pull plate; 802. First plug rod; 803. Second pull plate; 804. Second plug rod; 805. First socket; 806. Second socket; 901. Terminal head; 902. Terminal wire. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figure 1-Figure 5 As shown, the present invention provides a technical solution: an anti-loosening fixing device for power equipment terminal blocks, comprising a middle block 1, at least one first side block 2 movably arranged on both sides of the middle block 1, the number of the first side blocks 2 on both sides being equal and symmetrically arranged on both sides of the middle block 1, a second side block 3 being arranged on the side of the first side block 2, and specifically in this solution, the number of the first side block 2 and the second side block 3 are both set to one.

[0040] Specifically, such as Figure 4As shown, a first movable shaft 701 is movably connected to the side of the middle placement groove 101, a first connecting plate 702 is connected to the axis of the first movable shaft 701, and the first connecting plate 702 is fixed to the side of the first side block 2, and a second movable shaft 703 is movably connected to the side of the first side block placement groove 201, a second connecting plate 704 is connected to the axis of the second movable shaft 703, and the second connecting plate 704 is fixed to the side of the second side block 3, so that the first side block 2 and the second side block 3 can be flipped around the first movable shaft 701 and the second movable shaft 703 respectively.

[0041] A mounting groove is provided in the middle of the first side block 2 and the second side block 3. When the number of the first side block 2 and the second side block 3 is set to one, at least five mounting grooves are provided in the middle of the middle block 1, and the terminal head 901 is installed in the mounting groove. The specific setting purpose is that when all the first side blocks 2 and the second side blocks 3 on both sides are rotated 180 degrees, the total length of the middle block 1 is greater than or equal to the sum of the lengths of the first side blocks 2 and the second side blocks 3 after being rotated 180 degrees.

[0042] A fixing device is provided in the installation slot, and the terminal head 901 in the installation slot is fixed by the fixing device. Specifically, Figure 1 and Figure 3 As shown, the fixing device includes two U-shaped clamping blocks 501, the bottom length of the clamping block 501 is not greater than the length of the terminal head 901, at least one guide rod is fixed between the bottom and the top groove wall of the installation groove, and the guide rod is movably plugged into the clamping block 501, and a double-headed screw rod 502 is movably connected to one side of the installation groove. The thread directions on the threaded rod bodies on both sides of the double-headed screw rod 502 are opposite, and the two clamping blocks 501 are movably screwed to the clamping blocks 501 respectively, and a number of grooves are provided at the bottom of the middle block 1, the first side block 2 and the second side block 3. A knob 503 is fixed at the end of the double-headed screw rod 502, and the knob 503 is located at In the groove, the bottom end surface of the knob 503 is not higher than the bottom end surfaces of the middle block 1, the first side block 2 and the second side block 3. Such an arrangement can increase the placement stability of the terminal fixing device. It can be known that when the double-headed screw 502 rotates, it drives the two clamping blocks 501 to move toward or away from each other. When the two clamping blocks 501 move toward each other, the terminal head 901 is clamped and fixed. When the two clamping blocks 501 move away from each other, the terminal head 901 is contacted and fixed. In addition, to prevent the terminal head 901 from loosening, elastic plates 504 made of rubber material are fixed on the opposite sides of the two clamping blocks 501.

[0043] like Figure 1 and Figure 3As shown, a positioning component 4 is provided on the front or back of the middle block 1, and the first side blocks 2 and the second side blocks 3 on both sides are fixed to the middle block 1 through the positioning component 4. Specifically, the positioning component 4 includes a slot 401 provided on the middle block 1, the first side block 2 and the second side block 3, and a plug plate 402 made of transparent material is movably inserted in the slot 401 of the middle block 1, and a plurality of limiting screw holes 405 connected to the slot 401 are provided on the side of the middle block 1. Specifically, in this solution, since the number of the first side block 2 and the second side block 3 is set to one, the number of limiting screw holes 405 is set to three. When the total number of the first side block 2 and the second side block 3 is N, the number of limiting screw holes 405 is set to N+1. A connecting screw 404 is movably screwed on the side of the plug plate 402, and the connecting screw 404 is adapted to the limiting screw hole 405, as shown in FIG. Figure 5 As shown, the specific purpose of setting the limiting screw holes 405 from right to left is to fix the plug board 402 itself, Figure 7 The first side block 2 shown is fixed and the completely flat first side block 2 and the second side block 3 are fixed to improve the placement stability of the terminal fixing device.

[0044] To facilitate pushing the plug plate 402, a threaded tube 403 is fixed on the side of the plug plate 402, and the threaded tube 403 is movably screwed to the connecting screw 404. When pushing the device, the connecting screw 404 is first disengaged from the limiting screw hole 405. When fixing the first side block 2 or the second side block 3, the connecting screw 404 is rotated and screwed into the corresponding limiting screw hole 405.

[0045] like Figure 4 As shown, central placement grooves 101 are provided on both sides of the top of the central block 1, and the central placement groove 101 is adapted to the first side block 2 and the second side block 3, that is, after the first side block 2 and the second side block 3 are flipped 180 degrees, the first side block 2 and the second side block 3 are located in the central placement groove 101, and a first side block placement groove 201 is provided on the top of the first side block 2, and the second side block 3 is adapted to the first side block placement groove 201. Similarly, when the second side block 3 is flipped 180 degrees, the second side block 3 is located in the first side block placement groove 201.

[0046] A first limiting member is provided on one side of the middle placement slot 101, and the first side block 2 and the second side block 3 are limited by the first limiting member. Specifically, Figure 4As shown, the first limiting member includes two first plug rods 802 that are movably connected to the middle block 1, and a first pull plate 801 is fixed to the end of the first plug rod 802. A first spring is fixed between the middle block 1 and the first pull plate 801, and the first plug rod 802 is located in the spiral coil of the first spring. A first plug hole 805 is opened on the outside of the second side block 3, and the first plug hole 805 is adapted to the first plug rod 802. Figure 6 When the first side block 2 and the second side block 3 are located in the middle placement groove 101, under the reset force of the first spring, the first insertion rod 802 is inserted into the first insertion hole 805. When it is necessary to release the limit of the first side block 2 and the second side block 3, the first pull plate 801 is pulled outward to disengage the first insertion rod 802 from the first insertion hole 805, and then the second side block 3 is rotated.

[0047] A second limiting member is provided on one side of the first side block placement groove 201. When the second side block 3 is located in the first side block placement groove 201, the second side block 3 is limited by the second limiting member, wherein the second limiting member includes a second plug rod 804 movably connected to the first side block 2, a second pull plate 803 is fixed to the end of the second plug rod 804, a second spring is fixed between the first side block 2 and the second pull plate 803, a second plug hole 806 is provided on the outside of the second side block 3, and the second plug hole 806 is adapted to the second plug rod 804. Similarly, referring to Figure 7 When the second side block 3 is located in the first side block placement groove 201, under the reset force of the second spring, the second plug rod 804 is inserted into the second socket 806. When it is necessary to release the limit of the second side block 3, the second pull plate 803 is pulled outward to disengage the second plug rod 804 from the second socket 806, and then the second side block 3 is rotated.

[0048] In order to further prevent the power equipment terminal from loosening, a cable limit assembly 6 is provided outside the installation slot, wherein Figure 3 As shown, the cable limiting assembly 6 includes a connecting shaft 601 movably connected to the top and bottom of the mounting groove, and an extension plate 602 that is retracted outward is connected to the shaft body of the connecting shaft 601, and a clamping plate 603 is fixed to the end of the extension plate 602. Arc grooves are formed on the opposite sides of the two clamping plates 603. When the two clamping plates 603 are put together, the two arc grooves form a clamping groove, which is adapted to the terminal wire 902 of the terminal head 901. Two symmetrically arranged guide grooves are provided on the side of one of the extension plates 602, and two vertical screws 604 are fixed on the plate body of the other extension plate 602, and the guide grooves are adapted to the vertical screw 604. The connection between the two clamping plates 603 is achieved by a fastening nut 605 screwed on the rod body of the vertical screw 604.

[0049] To supplement this solution, first, the first side block 2 or the second side block 3 is flipped over according to the number of the power equipment terminals to be fixed, so that the number of installation slots adapts to the number of the power equipment terminals, and the flipped first side block 2 or the second side block 3 is fixed to the middle block 1 through the positioning component 4, and the terminal head 901 is clamped and fixed by the fixing device, and then the two extension plates 602 are rotated toward each other, and the terminal wire 902 is placed in the clamping groove, and finally the fastening nut 605 is tightened to achieve the clamping and fixation of the terminal wire 902 by the two clamping plates 603.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A device for fixing a terminal block of an electric power equipment to prevent loosening, comprising a middle block (1), characterized in that: At least one first side block (2) is movably provided on both sides of the middle block (1), the number of the first side blocks (2) on both sides is equal and symmetrically provided on both sides of the middle block (1), and a second side block (3) is provided on the side of the first side block (2); At least five mounting slots are provided in the middle of the middle block (1), and a mounting slot is provided in the middle of the first side block (2) and the second side block (3), and the terminal head (901) is installed in the mounting slot; A fixing device is provided in the installation groove, and the terminal head (901) in the installation groove is fixed by the fixing device; A positioning assembly (4) is provided on the front or back of the middle block (1), and the first side blocks (2) and the second side blocks (3) on both sides are fixed to the middle block (1) through the positioning assembly (4); Both sides of the top of the middle block (1) are provided with middle placement grooves (101), the middle placement grooves (101) are adapted to the first side block (2) and the second side block (3), the top of the first side block (2) is provided with a first side block placement groove (201), and the second side block (3) is adapted to the first side block placement groove (201); A first limiting member is provided on one side of the middle placement groove (101); when the first side block (2) and the second side block (3) are located in the middle placement groove (101), the first limiting member limits the first side block (2) and the second side block (3); A second limiting member is provided on one side of the first side block placement groove (201); when the second side block (3) is located in the first side block placement groove (201), the second side block (3) is limited by the second limiting member.

2. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: The fixing device comprises two clamping blocks (501), at least one guide rod is fixed between the bottom and top groove walls of the installation groove, and the guide rod is movably plugged into the clamping blocks (501); A double-headed screw rod (502) is movably connected to one side of the mounting groove, and the two clamping blocks (501) are movably screwed to the clamping blocks (501) respectively. A knob (503) is fixed to the end of the double-headed screw rod (502). When the double-headed screw rod (502) rotates, the two clamping blocks (501) are driven to move toward or away from each other.

3. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 2, characterized in that: Elastic plates (504) are fixed to opposite sides of the two clamping blocks (501).

4. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: A cable limiting assembly (6) is provided on the outside of the installation groove, and the cable limiting assembly (6) includes a connecting shaft (601) movably connected to the top and bottom of the installation groove, an extension plate (602) is connected to the shaft body of the connecting shaft (601), and a clamping plate (603) is fixed to the end of the extension plate (602), and arc grooves are formed on the opposite sides of the two clamping plates (603). When the two clamping plates (603) are combined, the two arc grooves form a clamping groove, and the clamping groove is adapted to the terminal wire (902) of the terminal head (901); Two guide grooves are provided on the side of one extension plate (602), and two vertical screw rods (604) are fixed on the plate body of the other extension plate (602). The guide grooves are adapted to the vertical screw rods (604), and a fastening nut (605) is movably screwed on the rod body of the vertical screw rod (604).

5. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: The positioning assembly (4) includes slots (401) provided on the middle block (1), the first side block (2) and the second side block (3); a plug-in plate (402) is movably inserted into the slot (401) of the middle block (1); and a plurality of limiting screw holes (405) connected to the slot (401) are provided on the side surface of the middle block (1); A connecting screw rod (404) is movably screwed to the side surface of the inserting plate (402), and the connecting screw rod (404) is adapted to the limiting screw hole (405).

6. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 5, characterized in that: A threaded tube (403) is fixed to the side of the inserting plate (402), and the threaded tube (403) is movably threadedly connected to the connecting screw (404).

7. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: The side of the middle placement groove (101) is movably connected to a first movable shaft (701), the shaft of the first movable shaft (701) is connected to a first connecting plate (702), and the first connecting plate (702) is fixed to the side of the first side block (2); The side surface of the first side block placement groove (201) is movably connected to a second movable shaft (703), the shaft body of the second movable shaft (703) is connected to a second connecting plate (704), and the second connecting plate (704) is fixed to the side surface of the second side block (3).

8. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: The first position-limiting member comprises a first plug rod (802) movably plugged into the middle block (1), a first pull plate (801) being fixed to the end of the first plug rod (802), and a first spring being fixed between the middle block (1) and the first pull plate (801); A first insertion hole (805) is provided on the outer side of the second side block (3), and the first insertion hole (805) is adapted to the first insertion rod (802).

9. The anti-loosening fixing device for electric power equipment terminal blocks according to claim 1, characterized in that: The second position-limiting member comprises a second insertion rod (804) movably plugged into the first side block (2), a second pull plate (803) being fixed to the end of the second insertion rod (804), and a second spring being fixed between the first side block (2) and the second pull plate (803); A second insertion hole (806) is provided on the outer side of the second side block (3), and the second insertion hole (806) is adapted to the second insertion rod (804).

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