Protective pin rectifier bridge

Abstract

The utility model discloses a protective pin rectifier bridge, including rectifier bridge body, the rectifier bridge body upper surface is fixed with the connecting seat through screw. The utility model discloses, through the linkage design of openable casing and pivot torsional spring, makes the casing automatic keeping open when no external force, and the convenient cable installation and maintenance operation are operated, and through the spring ball joint structure of fixed frame realizes the stable locking after casing closure, avoids the pin damage of accidental touch, adopts the adjustable clamping piece combination structure in semicircle rubber pad of passing -through hole, through the linear movement of screw drive clamping piece, can adapt the clamping demand of different outer diameter cable, and the antiskid protruding of semicircle rubber pad and the rigid support of clamping piece cooperate, prevent cable slippage or skin damage, through the honeycomb heat dissipation hole of connecting seat and casing forms the airflow channel of through, realizes the passive heat dissipation intensification under the working condition, solved the rectifier bridge body heat dissipation deterioration problem of traditional closed protection structure.

Description

Technical Field

[0001] This utility model relates to the field of rectifier bridge technology, and in particular to a protective pin rectifier bridge. Background Technology

[0002] As a power component, the rectifier bridge is widely used in various power supply equipment. Its internal structure mainly consists of a bridge circuit composed of four diodes to convert the input AC voltage into the output DC voltage.

[0003] The rectifier bridge in the existing technology is prone to pin breakage and damage during use, which affects the normal use of the device. Furthermore, pulling on the cables on the pins can also cause damage to the pins, resulting in unnecessary losses.

[0004] To address this, a disclosed technology proposes a protective pin rectifier bridge, comprising a device body, a limiting strip, and a second slide groove. The device body is equipped with a pin frame and has openings. A protective frame is mounted on the base. This disclosed technology includes a spring and a clamping block. The spring compresses the clamping block to clamp the cable connected to the pin, thereby preventing unnecessary damage to the pins on the device body when the cable is accidentally touched or pulled, thus making the device more stable.

[0005] However, the above-mentioned disclosed technology still has certain drawbacks. The rectifier bridge is encased inside the base and protective frame, which leads to poor heat dissipation. Moreover, it clamps the cables by spring-pressing the clamping blocks. Since there are usually multiple cables, it is difficult to ensure that all cables are clamped when the two sets of clamping blocks are closed. This is due to two reasons: first, the spring force is eccentric; and second, the outer diameter of the cables may not be exactly the same. Therefore, it is necessary to develop a protective pin rectifier bridge to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a protective pin rectifier bridge.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a protective pin rectifier bridge, comprising a rectifier bridge body, a connecting seat fixed to the upper surface of the rectifier bridge body by screws, a pin hole for pins to pass through and a first heat dissipation hole distributed around the pin hole on the surface of the connecting seat, a rotatable housing connected to the top of the connecting seat by a rotating shaft, the housing being composed of two sets of symmetrical half-shells, a second heat dissipation hole on the surface of the housing, an annular groove on the outer wall of the housing, a slidable fixing frame on the outer side of the rectifier bridge body, multiple sets of springs and balls symmetrically arranged on the inner side wall of the fixing frame, the balls being interference-fitted with the groove, multiple sets of wire-passing holes distributed front and back on one end of the housing away from the rectifier bridge body, a semi-circular rubber pad fixed on one side of each wire-passing hole and a movable semi-circular clamping piece on the other side, the semi-circular clamping piece being threadedly connected to the housing by a screw, and a hand-tightening head on one end of the screw extending outside the housing.

[0008] As a further description of the above technical solution:

[0009] The diameter of the ball bearing is 0.3 mm greater than the groove depth.

[0010] As a further description of the above technical solution:

[0011] The screw end has a hand-tightening head with striped anti-slip texture on its surface, and the diameter of the hand-tightening head is 2.5 times the diameter of the screw.

[0012] As a further description of the above technical solution:

[0013] The screw is locked to the housing by tightening a nut.

[0014] As a further description of the above technical solution:

[0015] A torsion spring is provided at the pivot connection between the housing and the connecting seat. The two sets of half-shells of the housing can maintain an opening angle of 60°-90° when no external force is applied by the torsion spring.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the semi-circular rubber pad is provided with staggered anti-slip protrusions, the height of which is 0.2-0.5mm.

[0018] As a further description of the above technical solution:

[0019] Both the first and second heat dissipation holes have a regular hexagonal honeycomb hollow structure.

[0020] This utility model has the following beneficial effects:

[0021] 1. Compared with existing technologies, this protective pin rectifier bridge, through the linkage design of the symmetrical half-shell housing that can be opened and closed and the torsion spring of the rotating shaft, allows the housing to automatically maintain an opening angle of 60°-90° when there is no external force, which facilitates cable installation and maintenance operations. At the same time, the spring ball locking structure of the fixed frame achieves stable locking after the housing is closed, avoiding pin damage caused by accidental contact.

[0022] 2. Compared with the existing technology, this protective pin rectifier bridge adopts a combination structure of semi-circular rubber pad inside the cable hole and adjustable clamping plate. The clamping plate is driven to move linearly by a screw, which can adapt to the clamping requirements of cables with different outer diameters. The anti-slip protrusion of the semi-circular rubber pad and the rigid support of the clamping plate work together to prevent the cable from slipping or the outer sheath from being damaged.

[0023] 3. Compared with existing technologies, this protective pin rectifier bridge forms a through airflow channel through the honeycomb heat dissipation holes of the connecting seat and the housing, thereby achieving passive heat dissipation enhancement during operation and solving the problem of heat dissipation deterioration of the rectifier bridge body caused by traditional closed protective structures. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a protective pin rectifier bridge proposed in this utility model;

[0025] Figure 2 This utility model proposes a protective pin rectifier bridge. Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 3 This utility model proposes a protective pin rectifier bridge. Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 4 This is a schematic diagram of the housing structure of a protective pin rectifier bridge proposed in this utility model;

[0028] Figure 5 This is a top view structural diagram of the connecting seat of a protective pin rectifier bridge proposed in this utility model;

[0029] Figure 6 This is a partial top sectional view of the fixing frame, spring, and ball connection structure of a protective pin rectifier bridge proposed in this utility model.

[0030] Legend:

[0031] 1. Rectifier bridge body; 2. Connector; 201. First heat dissipation hole; 202. Pin hole; 3. Housing; 301. Second heat dissipation hole; 4. Slot; 5. Fixing frame; 501. Spring; 502. Ball bearing; 6. Wire hole; 7. Semi-circular rubber pad; 8. Semi-circular clamping plate; 9. Screw; 10. Hand tightening head; 11. Tightening nut. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 6 This utility model provides a protective pin rectifier bridge, comprising a rectifier bridge body 1, a connector 2 fixed to the upper surface of the rectifier bridge body 1 by screws, a pin hole 202 for pins to pass through and a first heat dissipation hole 201 distributed around the pin hole 202. The screw fixing method facilitates quick disassembly and maintenance of the connector 2, and the pin hole 202 ensures accurate alignment when the rectifier bridge pins pass through. The first heat dissipation hole 201 adopts a regular hexagonal honeycomb hollow structure, which cooperates with the second heat dissipation hole 301 of the housing 3 to form a vertically connected heat dissipation channel, which utilizes natural air convection to enhance heat dissipation and avoids the temperature rise problem caused by the closed protective structure of the rectifier bridge body 1.

[0034] To balance the ease of cable installation with the reliable protection of the housing 3 when closed, a rotatable housing 3 is rotatably connected to the top of the connector 2 via a pivot. The housing 3 consists of two symmetrical sets of half-shells. A torsion spring is installed at the connection between the housing 3 and the pivot of the connector 2. The two sets of half-shells of the housing 3 can maintain a 90° opening angle when there is no external force through the torsion spring. The operator can manually open and close the housing 3. The torsion spring provides a constant restoring force, so that the housing 3 can stably maintain a 90° angle when open, which is convenient for connecting multiple cables and pins. When closed, the housing 3 is locked by pushing the fixing frame 5 to prevent accidental opening of the housing 3, thereby protecting the internal pins.

[0035] To address the problem of low heat dissipation efficiency in traditional protective structures, a second heat dissipation hole 301 is provided on the surface of the shell 3. Both the first heat dissipation hole 201 and the second heat dissipation hole 301 are regular hexagonal honeycomb hollow structures. The honeycomb structure provides a larger effective heat dissipation area under the same opening ratio.

[0036] To ensure the vibration and impact resistance of the housing 3 after it is closed, the outer wall of the housing 3 is provided with an annular groove 4, and the outer side of the rectifier bridge body 1 is provided with a sliding fixing frame 5. Multiple sets of springs 501 and balls 502 are symmetrically arranged on the inner side wall of the fixing frame 5. The balls 502 are interference-fitted with the groove 4, and the diameter of the balls 502 is 0.3mm larger than the depth of the groove 4. After the housing 3 is closed, the fixing frame 5 is slid to cover the joint of the housing 3, and the springs 501 push the balls 502 into the groove 4. The interference fit generates a radial locking force. The multiple sets of symmetrically distributed balls 502 can offset the off-center load caused by unilateral force, and prevent the housing 3 from being opened accidentally due to vibration or external impact. At the same time, the interference design takes into account both the closing feel and the locking reliability.

[0037] To accommodate the clamping requirements of cables with different outer diameters and prevent damage to the sheath, the housing 3 has multiple sets of cable passage holes 6 arranged in a front-to-back pattern at the end away from the rectifier bridge body 1. Each cable passage hole 6 has a semi-circular rubber pad 7 fixed on one side and a movable semi-circular clamping plate 8 on the other side. The inner wall of the semi-circular rubber pad 7 has staggered anti-slip protrusions with a height of 0.3mm. When the cable is placed into the semi-circular rubber pad 7 side of the cable passage hole 6, the hand screw 10 is rotated to drive the screw 9 to move the semi-circular clamping plate 8 linearly until the cable is clamped. The anti-slip protrusions of the semi-circular rubber pad 7 can increase the friction, while the rubber material buffers the rigid clamping pressure and avoids cutting the cable sheath. The split clamping structure can independently adjust the clamping force of each cable passage hole 6 to adapt to the differences in the outer diameter of multiple cables.

[0038] To achieve rapid adjustment of clamping force and prevent loosening, the semi-circular clamping plate 8 is threadedly connected to the housing 3 via a screw 9. A hand-tightening head 10 is provided at one end of the screw 9 extending outside the housing 3. The surface of the hand-tightening head 10 at the end of the screw 9 is provided with strip-shaped anti-slip texture, and the diameter of the hand-tightening head 10 is 2.5 times the diameter of the screw 9. The screw 9 and the housing 3 are locked together by a tightening nut 11. The anti-slip texture and enlarged diameter design of the hand-tightening head 10 facilitates manual rotation. After adjusting the position of the clamping plate 8, tighten the tightening nut 11 to press against the outer wall of the housing 3 to eliminate axial movement of the screw 9 caused by vibration and ensure long-term stability of the position of the clamping plate 8.

[0039] Working principle: The first heat dissipation hole 201 adopts a regular hexagonal honeycomb hollow structure, which, together with the second heat dissipation hole 301 of the housing 3, forms a vertically connected heat dissipation channel. This utilizes natural air convection to enhance heat dissipation, avoiding the temperature rise problem caused by the enclosed protective structure of the rectifier bridge body 1. The honeycomb structure provides a larger effective heat dissipation area with the same opening ratio. The operator can manually open and close the housing 3. The torsion spring provides a constant restoring force, ensuring that the housing 3 remains stably at a 90° angle when open, facilitating the connection of multiple cables and pins. When closed, the housing 3 is locked by pushing the fixing frame 5 to prevent accidental opening, thus protecting the internal pins. After closing the housing 3, the fixing frame 5 is slid to cover the seam of the housing 3, and the spring 501 pushes the ball 502 into the slot 4, generating a radial locking force through the interference fit. Multiple sets of symmetrical... The distributed ball bearings 502 can counteract the off-center load caused by unilateral force, preventing the housing 3 from accidentally opening due to vibration or external impact. At the same time, the interference fit design takes into account both the closing feel and locking reliability. Place the cable into the side of the semi-circular rubber pad 7 of the cable passage hole 6, and rotate the hand-tightening head 10 to drive the screw 9 to move the semi-circular clamping plate 8 linearly until the cable is clamped. The anti-slip protrusions of the semi-circular rubber pad 7 can increase the friction, and the rubber material buffers the rigid clamping pressure to avoid cutting the cable sheath. The split clamping structure can independently adjust the clamping force of each cable passage hole 6 to adapt to the differences in the outer diameter of multiple cables. The anti-slip texture and enlarged diameter design of the hand-tightening head 10 facilitates manual rotation operation. After the position of the semi-circular clamping plate 8 is adjusted, tighten the nut 11 to press against the outer wall of the housing 3 to eliminate the axial movement of the screw 9 caused by vibration and ensure the long-term stability of the position of the semi-circular clamping plate 8.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 protective pin rectifier bridge, characterized in that: The rectifier bridge body (1) is provided with a connecting seat (2) fixed to its upper surface by screws. The connecting seat (2) has pin holes (202) for pins to pass through and first heat dissipation holes (201) distributed around the pin holes (202). A rotatable housing (3) is rotatably connected above the connecting seat (2) via a rotating shaft. The housing (3) consists of two symmetrically arranged half-shells. A second heat dissipation hole (301) is provided on the surface of the housing (3). An annular groove (4) is provided on the outer wall of the housing (3). A slidable... The fixed frame (5) has multiple sets of springs (501) and ball bearings (502) symmetrically arranged on the inner side wall. The ball bearings (502) are interference-fitted with the slot (4). The housing (3) has multiple sets of wire holes (6) distributed in a front-to-back pattern at one end away from the rectifier bridge body (1). A semi-circular rubber pad (7) is fixed on one side of each wire hole (6) and a movable semi-circular clamping piece (8) is provided on the other side. The semi-circular clamping piece (8) is threaded to the housing (3) through a screw (9). A hand-tightening head (10) is provided at one end of the screw (9) extending to the outside of the housing (3).

2. The protective pin rectifier bridge according to claim 1, characterized in that: The diameter of the ball (502) is 0.3 mm greater than the depth of the groove (4).

3. A protective pin rectifier bridge according to claim 1, characterized in that: The surface of the hand-tightening head (10) at the end of the screw (9) is provided with strip-shaped anti-slip texture, and the diameter of the hand-tightening head (10) is 2.5 times the diameter of the screw (9).

4. A protective pin rectifier bridge according to claim 1, characterized in that: The screw (9) is locked to the housing (3) by tightening the nut (11).

5. A protective pin rectifier bridge according to claim 1, characterized in that: A torsion spring is provided at the pivot connection between the housing (3) and the connecting seat (2), and the two sets of half-shells of the housing (3) can maintain an opening angle of 60°-90° when no external force is applied by the torsion spring.

6. A protective pin rectifier bridge according to claim 1, characterized in that: The inner wall of the semi-circular rubber pad (7) is provided with staggered anti-slip protrusions, the height of which is 0.2-0.5mm.

7. A protective pin rectifier bridge according to claim 1, characterized in that: Both the first heat dissipation hole (201) and the second heat dissipation hole (301) are hexagonal honeycomb hollow structures.

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