Wiring terminal protection shell and use method thereof

Abstract

The invention discloses a wiring terminal protection shell and a use method thereof, and belongs to the field of wiring terminals. A housing is included; the shell; a wire inlet hole is formed in the side face of the shell, and a fixing hole communicated with the wire inlet hole is formed in the top end of the shell. The bottom of the fixing hole is fixedly connected with a conducting strip I, and the center of the conducting strip I is provided with a hole for a bolt to pass through; a circular groove is formed in the bottom of the fixing hole, and a screw rod is fixedly connected to the center of the bottom surface of the circular groove; a sliding plate in sliding fit with the fixing hole is further arranged in the fixing hole. A threaded hole matched with the screw rod is formed in the center of the sliding plate; and a screw hole in threaded fit with the screw rod is formed in the bottom of the bolt. According to the invention, the conducting strip II can be prevented from being eroded by the external environment, and the probability of loosening of the bolt can be reduced, so that virtual connection of the conducting strip I and the conducting strip II is avoided.

Description

Technical Field

[0001] This invention relates to a protective shell for a terminal block and its usage method, belonging to the field of terminal blocks. Background Technology

[0002] Most terminal blocks on the market are currently fixed with bolts, pressing the conductor pieces together. However, in actual use, the bolts are prone to loosening when affected by external force or human error, causing the two conductive pieces to not fit tightly, resulting in a loose connection. This affects the use of the terminals and leaves safety hazards. Therefore, it is necessary to improve them. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems existing in the background art by providing a terminal protective shell and its usage method.

[0004] The present invention achieves the above objectives by adopting the following technical solution:

[0005] A terminal protective housing includes an outer shell; the outer shell; a wire inlet hole on the side of the outer shell, and a fixing hole communicating with the wire inlet hole at the top of the outer shell; a conductive plate I fixedly connected to the bottom of the fixing hole, and a hole for a bolt to pass through the center of the conductive plate I; a circular groove at the bottom of the fixing hole, and a screw fixedly connected to the center of the bottom surface of the circular groove; a sliding plate that slides within the fixing hole; a threaded hole matching the screw at the center of the sliding plate; and a threaded hole at the bottom of the bolt that threadedly engages with the screw.

[0006] A method of using a terminal block protective housing, the method comprising the following steps:

[0007] Step 1: Insert conductive sheet II, the ring connected to conductive sheet II, and the wire through the inlet hole, so that conductive sheet II is located above conductive sheet I;

[0008] Step 2: Rotate the bolt to connect it with the threaded hole in the center of the slide plate;

[0009] Step 3: The bolt moves downward relative to the slide plate and connects with the threaded screw.

[0010] Step 4: The bolt drives the limiting plate and sliding plate downwards, pressing against the upper end of the conductive plate II. Compared with the prior art, the beneficial effects of the present invention are: the present invention can not only prevent the conductive plate II from being corroded by the external environment, but also reduce the probability of bolt loosening, thereby avoiding the occurrence of loose connection between conductive plate I and conductive plate II. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of a terminal protection shell according to the present invention;

[0012] Figure 2 This is a cross-sectional view of the outer shell of a terminal protection shell according to the present invention;

[0013] Figure 3 This is a top view of the conductive sheet I of a terminal protective shell according to the present invention;

[0014] Figure 4 This is a top view of the connection of conductive sheet I and conductive sheet II in a terminal protective shell according to the present invention;

[0015] Figure 5 This is a front view of the connection between conductive sheet I and conductive sheet II of a terminal protective shell according to the present invention;

[0016] Figure 6 This is a bottom view of a limiting piece of a terminal protective shell according to the present invention;

[0017] Figure 7 This is a cross-sectional view of a limiting piece of a terminal protection shell according to the present invention. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Specific implementation method one: as follows Figure 1-7 As shown, this embodiment describes a terminal protective shell, including an outer shell 1; the outer shell 1; a wire inlet hole 11 is provided on the side of the outer shell 1, and a fixing hole 12 communicating with the wire inlet hole 11 is provided at the top of the outer shell 1; a conductive sheet I 15 is fixedly connected to the bottom of the fixing hole 12, and a hole 16 for a bolt 8 to pass through is provided in the center of the conductive sheet I 15; a circular groove 13 is provided at the bottom of the fixing hole 12, and a screw 14 is fixedly connected to the center of the bottom surface of the circular groove 13; a sliding plate 6 is also provided in the fixing hole 12, which slides and engages with the fixing hole 12; a threaded hole matching the screw 8 is provided in the center of the sliding plate 6; and a threaded hole 9 that engages with the screw 14 is provided at the bottom of the bolt 8. Through the engagement of the bolt 8 with the threaded hole in the center of the sliding plate 6 and the screw 14, the external force required to loosen the bolt 8 is increased, thereby reducing the probability of the bolt 8 automatically loosening without human intervention and avoiding the occurrence of a loose connection between the conductive sheet I 15 and the conductive sheet II 4.

[0020] The threaded hole at the center of the slide plate 6 has the same thread direction as the screw 14.

[0021] The pitch of the screw 14 is greater than the pitch of the central threaded hole of the slide plate 6. After the bolt 8 is connected to the screw 14, the bolt 8 can drive the slide plate 6 and the limiting plate 5 to move downward and press against the upper end of the conductive sheet II 4.

[0022] The threaded hole at the center of the screw 14, hole 16 and slide plate 6 are coaxial.

[0023] The cross-section of the fixing hole 12 is rectangular, and the shapes of the conductive sheet I 15 and the sliding plate 6 are adapted to the shape of the cross-section of the fixing hole 12.

[0024] A limiting block 7 located above the slide plate 6 is fixedly connected to the inner wall of the fixing hole 12.

[0025] The lower end of the slide plate 6 is fixedly connected to a limiting piece 5; the bottom surface of the limiting piece 5 is provided with multiple slots 51, and a slide rod 52 is fixedly connected in each slot 51.

[0026] Two sets of fixing posts 17 are fixedly connected to the upper end of the conductive sheet I 15. One set of fixing posts 17, which is farther away from the inlet hole 11, is higher than the other set of fixing posts 17, which is closer to the inlet hole 11. Two slide rails 18, perpendicular to the direction of the inlet hole 11, are provided on the upper end of the conductive sheet I 15 near the inlet hole 11. The slide rails 18 are slidably engaged with the set of fixing posts 17 near the inlet hole 11. A spring 19 is fixedly connected between the interior of each slide rail 18 and the corresponding fixing post 17. The cavity at the top of each fixing post 17 is interference-fitted with the corresponding slide rod 52. Each slot 51 is interference-fitted with the corresponding fixing post 17. The friction between the slide rod 52 and the fixing post 17 increases the external force required for the slide plate 6 to move upward.

[0027] When a group of fixing posts 17 near the inlet hole 11 moves in the opposite direction to their maximum spacing, the distance between the fixing posts 17 is greater than the outer diameter of the conductive sheet II 4. This allows the conductive sheet II 4 to move above the conductive sheet I 15.

[0028] A method of using a terminal block protective housing, the method comprising the following steps:

[0029] Step 1: Insert the conductive sheet II4, the ring 3 connected to the conductive sheet II4, and the wire 2 through the inlet hole 11, so that the conductive sheet II4 is located at the upper end of the conductive sheet I15;

[0030] Step 2: Rotate bolt 8 to connect bolt 8 with the threaded hole in the center of slide plate 6;

[0031] Step 3: Bolt 8 moves downward relative to slide plate 6 and is threaded into screw 14;

[0032] Step 4: Bolt 8 drives the limiting plate 5 and the sliding plate 6 to move downwards and press against the upper end of the conductive plate II 4.

[0033] The working principle of this invention is as follows: When using this device, the conductive sheet II4, the ring 3 connected to the conductive sheet II4, and the wire 2 are inserted through the inlet hole 11. When the slide plate 6 is at its highest point, part of the slide rod 52 is inserted with a group of relatively high fixed posts 17, while the other part of the slide rod 52 does not contact the group of relatively low fixed posts 17. Therefore, when the conductive sheet II4 is inserted, the outer surface of the conductive sheet II4 will push the group of relatively low (i.e., close to the inlet hole 11) fixed posts 17 to move in the opposite direction, so that the conductive sheet II4 is located at the upper end of the conductive sheet I15. Then, the fixed posts 17 move back to their original position under the elastic force of the spring 19.

[0034] After the conductive sheet II4 is installed in the predetermined position, all the fixing posts 17 are in contact with the outer circular surface of the conductive sheet II4, restricting the position of the conductive sheet II4. After the conductive sheet II4 is installed, the operator can try to pull it outwards gently to feel whether there is any resistance from the fixing posts 17, so as to determine whether the conductive sheet II4 has been installed in the predetermined position.

[0035] Rotate bolt 8 to connect it with the threaded hole in the center of slide plate 6. Due to the interference fit between the fixing post 17 and the slide rod 52, bolt 8 moves downward relative to slide plate 6 as it rotates until the screw rod 8 passes through conductive sheet I 15 and conductive sheet II 4. Then, the threaded hole 9 at the bottom of bolt 8 is threadedly connected to screw rod 14. Since the pitch of screw rod 14 is greater than the pitch of the threaded hole in the center of slide plate 6, when bolt 8 is rotated, the downward displacement of bolt 8 in one revolution is greater than the pitch of the threaded hole in the center of slide plate 6. When bolt 8 rotates and moves downward, it drives slide plate 6 and limiting plate 5 to move downward relative to conductive sheet II 4 through the thread. This also reduces the total length of slide rod 52 and the corresponding fixing post 17 until bolt 8 moves to the bottom of circular groove 13. At this time, fixing post 17 is inserted into the corresponding slot 51, and limiting plate 5 presses against the upper end of conductive sheet II 4, making conductive sheet II 4 and conductive sheet I 15 close together.

[0036] When bolt 8 is about to loosen, it needs to rotate relative to screw 14 and slide plate 6. According to the above movement process, when bolt 8 is about to loosen, after rotating relative to screw 14, it needs to drive slide plate 6 to move upward relative to conductive plate II 4. The fixed post 17 and slide rod 52 are interference-fitted, and the friction between them will increase the force required for the fixed post 17 and slide rod 52 to move relative to each other. This increases the difficulty for slide plate 6 to move upward relative to conductive plate II 4 when bolt 8 is about to loosen, which means increasing the external force required for bolt 8 to loosen, thereby effectively reducing the probability of bolt 8 loosening.

[0037] Meanwhile, after installation, the upper and lower end faces of conductive sheet II4 are covered by limiting plate 5 and conductive sheet I15 respectively, which can effectively prevent conductive sheet II4 from contacting the external environment, thereby preventing the upper and lower end faces of conductive sheet II4 from being corroded by the external environment, which would affect the use of the wiring terminals.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A protective housing for a terminal block, characterized in that: The device includes a housing (1); the housing (1); the side of the housing (1) is provided with an inlet hole (11), and the top of the housing (1) is provided with a fixing hole (12) communicating with the inlet hole (11); a conductive sheet I (15) is fixedly connected to the bottom of the fixing hole (12), and the center of the conductive sheet I (15) is provided with a hole (16) for a bolt (8) to pass through; the bottom of the fixing hole (12) is provided with a circular groove (13), and a screw (14) is fixedly connected to the center of the bottom surface of the circular groove (13); a sliding plate (6) is also provided in the fixing hole (12) and slides in cooperation with the fixing hole (12); the center of the sliding plate (6) is provided with a threaded hole that matches the screw (8); the bottom of the bolt (8) is provided with a threaded hole (9) that is threaded in cooperation with the screw (14).

2. The terminal block protective housing according to claim 1, characterized in that: The threaded hole at the center of the slide plate (6) has the same thread direction as the screw (14).

3. A terminal block protective housing according to claim 2, characterized in that: The pitch of the screw (14) is greater than the pitch of the central threaded hole of the slide plate (6).

4. A terminal block protective housing according to claim 1 or 3, characterized in that: The threaded hole at the center of the screw (14), hole (16) and slide plate (6) are coaxial.

5. A terminal block protective housing according to claim 4, characterized in that: The cross-section of the fixing hole (12) is rectangular, and the shapes of the conductive sheet I (15) and the sliding plate (6) are adapted to the shape of the cross-section of the fixing hole (12).

6. A terminal block protective housing according to claim 5, characterized in that: A limiting block (7) located above the slide plate (6) is fixedly connected to the inner wall of the fixing hole (12).

7. A terminal block protective housing according to claim 6, characterized in that: The lower end of the slide plate (6) is fixedly connected to a limiting piece (5); the bottom surface of the limiting piece (5) is provided with multiple slots (51), and a slide rod (52) is fixedly connected in each slot (51).

8. A terminal block protective housing according to claim 7, characterized in that: The upper end of the conductive sheet I (15) is fixedly connected to two sets of fixing posts (17), one set of fixing posts (17) away from the inlet hole (11) is higher than the other set of fixing posts (17) close to the inlet hole (11); the upper end of the conductive sheet I (15) is provided with two slides (18) perpendicular to the setting direction of the inlet hole (11) on the side close to the inlet hole (11), the slides (18) are slidably engaged with the set of fixing posts (17) close to the inlet hole (11); a spring (19) is fixedly connected between the interior of each slide (18) and the corresponding fixing post (17); the cavity at the top of each fixing post (17) is interference-fitted with the corresponding slide rod (52); each slot (51) is interference-fitted with the corresponding fixing post (17).

9. A terminal block protective housing according to claim 8, characterized in that: When a set of fixed posts (17) near the inlet hole (11) moves in the opposite direction to the maximum spacing, the spacing between the fixed posts (17) is greater than the outer diameter of the conductive sheet II (4).

10. The method of using a terminal protective shell according to claim 9, characterized in that: The method of use includes the following steps: Step 1: Insert the conductive sheet II (4), the ring (3) connected to the conductive sheet II (4), and the wire (2) through the inlet hole (11) so that the conductive sheet II (4) is located at the upper end of the conductive sheet I (15); Step 2: Rotate the bolt (8) to connect the bolt (8) with the threaded hole in the center of the slide plate (6); Step 3: The bolt (8) moves downward relative to the slide plate (6) and is threaded into the screw (14); Step 4: The bolt (8) drives the limiting plate (5) and the sliding plate (6) to move downwards and press against the upper end of the conductive plate II (4).

Images