Terminal assembly with anti-loosening function

Abstract

A terminal assembly with an anti-loosening function comprises a fixed seat, a fixed plate and a screw, the fixed seat comprises two side plates which are oppositely arranged, and a bottom plate and a top plate which are respectively connected between the two side plates, at least one side plate is provided with a limiting rib which protrudes towards the other side plate, the limiting rib and the top plate are arranged at an interval, and the screw is connected with the bottom plate and the top plate. A receding groove is formed between the limiting rib and the top plate, the fixing plate penetrates through the receding groove to be installed in the fixing base, the screw is used for pushing the fixing plate to move close to the bottom plate so that the fixing plate and the bottom plate can clamp an external wire, and meanwhile the fixing plate in the receding groove moves to the side face of the limiting rib so that the fixing plate can be pressed on the other side plate by the limiting rib. The limiting ribs can completely replace or partially replace screws to limit the fixing plate, the fixing seat and the fixing plate can be limited through the limiting ribs instead of the screws under the influence of factors such as external force and vibration, and looseness of the screws caused by the influence of the external factors is reduced.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a terminal assembly with an anti-loosening function. Background Art

[0002] In the production activities of electrical products, the terminals and current-carrying parts involved form a current-carrying assembly. During the assembly, production and transportation processes, the screws and terminals are subjected to tension, pressure and vibration, and the terminal thread engagement will be adjusted axially and radially. This adjustment causes the current-carrying assembly to loosen and fall off. In severe cases, it will cause the current-carrying assembly to fall apart, thus affecting production activities. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide a terminal assembly with an anti-loosening function.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A terminal assembly with an anti-loosening function comprises a fixing seat, a fixing plate and a screw, wherein the fixing seat comprises two side plates arranged opposite to each other, and a bottom plate and a top plate respectively connected between the two side plates, at least one of the side plates is provided with a limiting rib protruding toward the other side plate, the limiting rib is spaced apart from the top plate, an avoidance groove is provided between the limiting rib and the top plate, the fixing plate is inserted into the fixing seat through the avoidance groove, the screw is used to push the fixing plate to move close to the bottom plate so that the fixing plate and the bottom plate clamp the external wire, and at the same time the fixing plate in the avoidance groove moves to the side of the limiting rib so that the fixing plate is pressed against the other side plate by the limiting rib.

[0006] Preferably, a limiting groove is provided on the side of the fixing plate, and the limiting groove is used to be sleeved on the limiting rib, and the depth of the limiting groove is less than or equal to the height of the protrusion of the limiting rib.

[0007] Preferably, the two side panels are respectively provided with a limiting rib protruding toward the other side panel, the limiting ribs on the two side panels are respectively spaced apart from the top panel, and avoidance grooves are respectively provided between the two limiting ribs and the top panel, and the screws are used to push the fixed plate to move closer to the bottom plate, so that the fixed plate moves between the two limiting ribs and is clamped and limited by the two limiting ribs.

[0008] Preferably, a transition surface is provided at one end of the limiting rib close to the avoidance groove, and the transition surface is arranged at an oblique angle to the side plate.

[0009] Preferably, a side surface of the limiting rib close to the other side plate is provided with a contact surface in a curved shape, and the contact surface is used to contact the fixing plate.

[0010] Preferably, the limiting rib is formed by integrally stamping the side plate, and the side of the side plate away from the limiting rib is provided with a recessed groove corresponding to the limiting rib.

[0011] Preferably, two opposite side edges of the fixing plate are respectively provided with positioning bosses protruding along the width direction, and the side surfaces of the positioning bosses are provided with step surfaces, and the two step surfaces are respectively matched with the side edges of the two side plates.

[0012] Preferably, the side edge of the fixing plate is provided with a limiting groove for sleeved on the limiting rib, and when the two step surfaces respectively abut against the side edges of the two side plates, the limiting groove is aligned with the limiting rib.

[0013] Preferably, the fixing plate includes a first fixing plate and a second fixing plate, the width of the second fixing plate is greater than that of the first fixing plate, the second fixing plate is provided with the positioning bosses on opposite sides of the connection with the first fixing plate, and the first fixing plate is provided with limiting grooves on opposite sides.

[0014] Preferably, the fixing plate is provided with a locking boss protruding toward the bottom plate, and the locking boss is used to limit the external wire.

[0015] Preferably, a bending plate is provided at the end of the fixing plate, the bending plate is bent toward a side close to the top plate, and a chamfer is provided on the bending plate.

[0016] Preferably, the fixing plate is connected to the contact plate, the fixing plate and the contact plate are vertically arranged, and the fixing plate and the contact plate are L-shaped after being connected.

[0017] Preferably, the bottom plate is V-shaped, and includes a first bottom plate and a second bottom plate respectively connected to two side plates. The first bottom plate and the second bottom plate are connected after being tilted away from the connected side plates at one end in a direction away from the top plate, so that the first bottom plate and the second bottom plate are set at an oblique angle.

[0018] Preferably, the top plate includes a first top plate and a second top plate respectively connected to two side plates, the first top plate and the second top plate are stacked, one of which is provided with a threaded hole matching with the screw thread, and the other is provided with a through hole for passing the screw, and the threaded hole is used to drive the screw to move axially when the screw is turned.

[0019] The terminal assembly with anti-loosening function of the utility model, the limiting ribs can completely replace or partially replace the function of the screw limiting fixing plate, when affected by external forces and vibrations and the like, the fixing seat and the fixing plate can be limited by the limiting ribs instead of the screws, thereby reducing the loosening of the screws caused by external factors, thereby avoiding the problem of loosening and falling apart of the entire terminal assembly.

[0020] In addition, the limit groove can not only be put on the limit rib to play a certain guiding role when the screw pushes the fixed plate to prevent the fixed plate from shifting, but the limit groove can also match the size of the limit rib protrusion. In order to facilitate processing, when the limit rib is formed by one-piece stamping, the height of the limit rib protrusion is too high, and the fixed plate is difficult to move directly to the side of the limit rib for limitation. By setting the limit groove on the fixed plate, the problem of the limit rib protrusion being too high can be alleviated to a certain extent, so that the fixed plate and the limit rib can be reliably matched.

[0021] In addition, the inclined transition surface can play a transition role, making it easier for the fixing plate to move to the side of the limiting rib, thereby reducing the difficulty of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the terminal assembly with anti-loosening function of the utility model;

[0023] Figure 2 It is an exploded view of the terminal assembly with anti-loosening function of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the fixing seat of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the fixed plate of the utility model;

[0026] In the figure, 1, fixing plate; 2, fixing seat; 3, screw; 21, side plate; 22, bottom plate; 23, top plate; 4, limiting rib; 5, avoidance groove; 41, transition surface; 42, recessed groove; 11, limiting groove; 221, first bottom plate; 222, second bottom plate; 231, first top plate; 232, second top plate; 233, threaded hole; 12, contact plate; 14, positioning boss; 15, step surface; 101, first fixing plate; 102, second fixing plate; 16, locking boss; 17, bending plate. DETAILED DESCRIPTION

[0027] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the terminal assembly with anti-loosening function of the utility model. The terminal assembly with anti-loosening function of the utility model is not limited to the description of the following embodiments.

[0028] like Figure 1-4As shown, the terminal assembly with anti-loosening function of this embodiment includes a fixing plate 1, a fixing seat 2 and a screw 3, the fixing seat 2 includes two side plates 21 arranged opposite to each other, and a bottom plate 22 and a top plate 23 respectively connected between the two side plates 21, at least one of the side plates 21 is provided with a limiting rib 4 protruding toward the other side plate 21, the limiting rib 4 and the top plate 23 are spaced apart, and an avoidance groove 5 is provided between the limiting rib 4 and the top plate 23, the avoidance groove 5 is used for the installation of the fixing plate 1, the fixing plate 1 is inserted into the fixing seat 2 through the avoidance groove 5, the screw 3 is used to push the fixing plate 1 to move close to the bottom plate 22, so that the fixing plate 1 and the bottom plate 22 clamp the external wire (not shown in the figure), and at the same time, the fixing plate 1 in the avoidance groove 5 moves to the side of the limiting rib 4, so that the fixing plate 1 is pressed against the other side plate 21 by the limiting rib 4.

[0029] In the terminal assembly with anti-loosening function of the present embodiment, the limiting rib 4 can completely replace or partially replace the screw 3 to limit the fixing plate 1. When affected by external forces, vibrations and other factors, the fixing seat 2 and the fixing plate 1 can be limited by the limiting rib 4 instead of the screw 3, thereby reducing the loosening of the screw 3 caused by external factors, thereby avoiding the problem of loosening and falling apart of the entire terminal assembly.

[0030] like Figure 3 As shown, the two side panels 21 of this embodiment are respectively provided with a limiting rib 4 protruding toward the other side panel 21, the limiting ribs 4 on the two side panels 21 are respectively arranged at intervals from the top panel 23, and avoidance grooves 5 are respectively arranged between the two limiting ribs 4 and the top panel 23, the fixed plate 1 is used to be inserted into the two avoidance grooves 5 at the same time, and the screw 3 is used to push the fixed plate 1 to move close to the bottom panel 22, so that the fixed plate 1 moves between the two limiting ribs 4 and is clamped and limited by the two limiting ribs 4. Providing limiting ribs 4 on both side panels 21 can balance the forces on both sides of the fixed plate 1, and it is also more convenient for the screw 3 to push the fixed plate 1. Of course, only one limiting rib 4 can also be provided, which all falls within the protection scope of the present utility model.

[0031] Furthermore, a transition surface 41 is provided at one end of the limiting rib 4 close to the avoidance groove 5. The transition surface 41 is set at an oblique angle to the side plate 21. The inclined transition surface 41 can play a transition role, facilitating the movement of the fixing plate 1 to the side of the limiting rib 4, thereby reducing the difficulty of assembly.

[0032] Furthermore, the limiting rib 4 is in a semi-cylindrical shape, that is, the transverse cross-section of the limiting rib 4 is semicircular, and a curved contact surface is provided on the side of the limiting rib 4 close to the other side plate 21, and the contact surface is used to contact the fixing plate 1. When the curved contact surface contacts the fixing plate 1, it is a line contact, which can avoid the situation where the friction force is too large due to surface contact, and the screw 3 cannot push the fixing plate 1.

[0033] Furthermore, the limiting rib 4 is integrally stamped from the side plate 21, and the side plate 21 is provided with a recessed groove 42 corresponding to the limiting rib 4 on the side away from the limiting rib 4. The stamped limiting rib 4 is easy to process and low in cost, and is convenient for promotion and application.

[0034] Furthermore, a limiting groove 11 is provided on the side of the fixing plate 1, and the limiting groove 11 is used to be sleeved on the limiting rib 4, and the depth of the limiting groove 11 is less than or equal to the height of the protrusion of the limiting rib 4. The limiting groove 11 can not only be sleeved on the limiting rib 4, so that the screw 3 plays a certain guiding role when pushing the fixing plate 1 to prevent the fixing plate 1 from deviating, but also the limiting groove 11 can match the size of the protrusion of the limiting rib 4. In order to facilitate processing, when the limiting rib 4 is formed by integral stamping, the protrusion height of the limiting rib 4 is too high, and the fixing plate 1 is difficult to move directly to the side of the limiting rib 4 for limitation. By arranging the limiting groove 11 on the fixing plate 1, the problem of the protrusion height of the limiting rib 4 being too high can be alleviated to a certain extent, so that the fixing plate 1 and the limiting rib 4 can be reliably matched.

[0035] like Figure 3 As shown, the bottom plate 22 is V-shaped, and the bottom plate 22 includes a first bottom plate 221 and a second bottom plate 222 respectively connected to the two side plates 21. The first bottom plate 221 and the second bottom plate 222 are connected after being tilted away from the top plate 23 at one end away from the connected side plate 21, so that the first bottom plate 221 and the second bottom plate 222 are arranged at an oblique angle. The inclined first bottom plate 221 and the second bottom plate 222 can more reliably fix the external wires, such as concentrating the external wires to the tip of the V, so that they can be fixed more firmly after concentration.

[0036] Furthermore, the top plate 23 includes a first top plate 231 and a second top plate 232 respectively connected to the two side plates 21. The first top plate 231 and the second top plate 232 are stacked, one of which is provided with a threaded hole 233 that matches the thread of the screw 3, and the other is provided with a through hole for passing the screw 3 (not shown in the figure). The threaded hole 233 is used to drive the screw 3 to move axially when the screw 3 is rotated.

[0037] like Figure 4 As shown, the fixing plate 1 is connected to the contact plate 12, the fixing plate 1 and the contact plate 12 are arranged vertically, and the fixing plate 1 and the contact plate 12 are connected to form an L shape, and a contact point is provided on the contact plate 12. Of course, the contact plate 12 can also adopt other shapes, which are not specifically limited here.

[0038] Furthermore, the two opposite side edges of the fixing plate 1 are respectively provided with positioning bosses 14 protruding along the width direction, and the side surfaces of the positioning bosses 14 are provided with step surfaces 15, and the two step surfaces 15 are respectively matched with the side edges of the same side of the two side panels 21. The positioning bosses 14 can not only be used to limit the side panels 21, but also can be used for positioning during assembly. When the two step surfaces 15 respectively abut against the side edges of the two side panels 21, the limiting grooves 11 are aligned with the limiting ribs 4, avoiding the problem of difficulty in alignment due to the limiting grooves 11 and the limiting ribs 4 being located inside the fixing seat 2.

[0039] Specifically, the fixing plate 1 includes a first fixing plate 101 and a second fixing plate 102, the second fixing plate 102 is connected between the first fixing plate 101 and the contact plate 12, the width of the second fixing plate 102 is greater than the width of the first fixing plate 101, the second fixing plate 102 is provided with the positioning bosses 14 on opposite sides of the connection with the first fixing plate 101, and the first fixing plate 101 is provided with limiting grooves 11 on opposite sides of the side edges.

[0040] Furthermore, the fixing plate 1 is provided with a locking boss 16 protruding toward the bottom plate 22. The locking boss 16 is used to limit the external wire, which can increase the friction between the external wire and the locking boss 16. The locking boss 16 can bend the external wire, thereby more reliably pressing the external wire. Preferably, the locking boss 16 is located between the two limiting grooves 11, and the locking boss 16 is integrally stamped by the fixing plate 1.

[0041] Furthermore, a bending plate 17 is provided at one end of the fixing plate 1 away from the contact plate 12. The bending plate 17 is bent toward the side close to the top plate 23. The bending plate 17 is provided with a chamfer. The bending plate 17 can facilitate the fixing plate 1 to pass through the fixing seat 2, thereby reducing the difficulty of assembly.

[0042] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0043] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A terminal assembly with an anti-loosening function, comprising a fixing seat (2), a fixing plate (1) and a screw (3), wherein the fixing seat (2) comprises two side plates (21) arranged opposite to each other, and a bottom plate (22) and a top plate (23) respectively connected between the two side plates (21), characterized in that: At least one of the side plates (21) is provided with a limiting rib (4) protruding toward the other side plate (21); the limiting rib (4) and the top plate (23) are spaced apart; an avoidance groove (5) is provided between the limiting rib (4) and the top plate (23); the fixing plate (1) passes through the avoidance groove (5) and is installed in the fixing seat (2); the screw (3) is used to push the fixing plate (1) to move close to the bottom plate (22), so that the fixing plate (1) and the bottom plate (22) clamp the external wire; at the same time, the fixing plate (1) in the avoidance groove (5) moves to the side of the limiting rib (4), so that the fixing plate (1) is pressed against the other side plate (21) by the limiting rib (4).

2. The terminal assembly with anti-loosening function according to claim 1, characterized in that: A limiting groove (11) is provided on the side of the fixing plate (1), and the limiting groove (11) is used to be sleeved on the limiting rib (4), and the depth of the limiting groove (11) is less than or equal to the height of the protrusion of the limiting rib (4).

3. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The two side plates (21) are respectively provided with a limiting rib (4) protruding toward the other side plate (21); the limiting ribs (4) on the two side plates (21) are respectively arranged at intervals from the top plate (23); avoidance grooves (5) are respectively provided between the two limiting ribs (4) and the top plate (23); the screws (3) are used to push the fixing plate (1) to move close to the bottom plate (22), so that the fixing plate (1) moves between the two limiting ribs (4) and is clamped and limited by the two limiting ribs (4).

4. The terminal assembly with anti-loosening function according to claim 1, characterized in that: A transition surface (41) is provided at one end of the limiting rib (4) close to the avoidance groove (5), and the transition surface (41) is arranged at an oblique angle to the side plate (21).

5. The terminal assembly with anti-loosening function according to claim 1, characterized in that: A curved contact surface is provided on the side of the limiting rib (4) close to the other side plate (21), and the contact surface is used to contact the fixing plate (1).

6. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The limiting rib (4) is formed by integrally punching the side plate (21), and the side plate (21) is provided with a recessed groove (42) corresponding to the limiting rib (4) on the side away from the limiting rib (4).

7. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The fixing plate (1) is provided with positioning bosses (14) protruding along the width direction on the opposite side edges, and the side faces of the positioning bosses (14) are provided with step surfaces (15). The two step surfaces (15) are respectively matched with the side edges of the two side plates (21) to limit the position.

8. The terminal assembly with anti-loosening function according to claim 7, characterized in that: The side edge of the fixing plate (1) is provided with a limiting groove (11) for sleeved on the limiting rib (4), and when the two step surfaces (15) respectively abut against the side edges of the two side plates (21), the limiting groove (11) is aligned with the limiting rib (4).

9. The terminal assembly with anti-loosening function according to claim 7, characterized in that: The fixing plate (1) comprises a first fixing plate (101) and a second fixing plate (102); the width of the second fixing plate (102) is greater than that of the first fixing plate (101); the second fixing plate (102) is provided with positioning bosses (14) on opposite sides of a connection with the first fixing plate (101); and the first fixing plate (101) is provided with limiting grooves (11) on opposite side edges.

10. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The fixing plate (1) is provided with a locking boss (16) protruding toward the bottom plate (22), and the locking boss (16) is used to limit the position of the external wire.

11. The terminal assembly with anti-loosening function according to claim 1, characterized in that: A bending plate (17) is provided at the end of the fixing plate (1), the bending plate (17) is bent towards a side close to the top plate (23), and a chamfer is provided on the bending plate (17).

12. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The fixing plate (1) is connected to the contact plate (12); the fixing plate (1) and the contact plate (12) are arranged vertically; and the fixing plate (1) and the contact plate (12) are L-shaped after being connected.

13. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The bottom plate (22) is V-shaped, and comprises a first bottom plate (221) and a second bottom plate (222) respectively connected to the two side plates (21); the ends of the first bottom plate (221) and the second bottom plate (222) away from the connected side plates (21) are connected after being inclined in a direction away from the top plate (23), so that the first bottom plate (221) and the second bottom plate (222) are arranged at an oblique angle.

14. The terminal assembly with anti-loosening function according to claim 1, characterized in that: The top plate (23) comprises a first top plate (231) and a second top plate (232) respectively connected to the two side plates (21); the first top plate (231) and the second top plate (232) are stacked, one of which is provided with a threaded hole (233) threadably matched with the screw (3), and the other is provided with a through hole for passing the screw (3); the threaded hole (233) is used to drive the screw (3) to move axially when the screw (3) is rotated.

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