Control terminal connection assembly and circuit breaker

Abstract

The utility model discloses a control terminal connection assembly and a circuit breaker, the control terminal connection assembly comprises a mounting seat and a control terminal main body, the mounting seat is used for being mounted and fixed on a shell of the circuit breaker, the control terminal main body is detachably mounted on the mounting seat, the mounting seat is provided with a first wiring end, and the first wiring end is provided with a second wiring end; and the control terminal main body is provided with a second wiring terminal, and the second wiring terminal is electrically connected with the first wiring terminal. According to the invention, the maintenance of the control terminal is relatively convenient.

Description

Technical Field

[0001] The present application relates to the field of circuit breakers, and in particular to a control terminal connection assembly and a circuit breaker. Background Art

[0002] Outdoor high-voltage vacuum circuit breakers are often integrated with control terminals, which are used to control the execution of the electric closing and opening of the circuit breaker. When the control terminal of the circuit breaker fails, it needs to be repaired. Since the control terminal of the circuit breaker is usually fixed on the housing of the circuit breaker, it is difficult to repair the control terminal of the circuit breaker when the circuit breaker is installed at a high place or in a narrow space. Utility Model Content

[0003] In order to make the control terminal of the circuit breaker easier to maintain, the present application provides a control terminal connection assembly and a circuit breaker.

[0004] A control terminal connection assembly and a circuit breaker provided in the present application adopt the following technical solution:

[0005] A control terminal connection assembly comprises a mounting base and a control terminal body, wherein the mounting base is used to be mounted and fixed on a housing of a circuit breaker, the control terminal body is detachably mounted on the mounting base, the mounting base is provided with a first wiring terminal, the control terminal body is provided with a second wiring terminal, and the second wiring terminal is electrically connected to the first wiring terminal.

[0006] By adopting the above technical solution, the main structure of the control circuit of the circuit breaker is integrated on the control terminal body, and the control terminal body is maintained on the mounting base through the connection between the first terminal and the second terminal. When the control terminal of the circuit breaker fails, the control terminal body can be removed from the mounting base while separating the first terminal from the second terminal, making the maintenance of the control terminal more convenient.

[0007] Optionally, the control terminal body is provided with a locking structure, which includes a lock core and a key, the lock core is connected to the control terminal body, the lock core includes a rotating sleeve, the inner hole of the rotating sleeve is matched with the key to prevent rotation, the rotating sleeve is rotatably connected to the control terminal body, the rotating sleeve is provided with a core column, the core column is concentrically arranged with the rotating sleeve, and the mounting seat is provided with a socket adapted to the core column; the core column is provided with a bayonet pin, the bayonet pin is perpendicular to the core column, and the end of the bayonet pin extends beyond the circumferential surface of the core column; the inner wall of the socket is provided with a longitudinal slot for avoiding the bayonet pin, and the end of the socket away from the rotating sleeve is provided with an expansion hole for the bayonet pin to rotate.

[0008] By adopting the above technical solution, when the control terminal body is installed into the mounting seat, the locking pin of the locking structure passes through the longitudinal slot and then enters the inner side of the expanded hole. When the control terminal body is installed in place, the key of the locking structure is inserted into the rotating sleeve, and then the key is rotated so that the key drives the locking pin through the rotating sleeve and the core column, so that the locking pin rotates away from the longitudinal slot, so that the locking pin is limited by the bottom of the expanded hole, thereby realizing the locking between the control terminal body and the mounting seat.

[0009] Optionally, a telescopic rod is coaxially passed through the core column, and the locking pin is vertically fixedly connected to the telescopic rod. An end of the core column away from the rotating sleeve is provided with a hole for accommodating the locking pin, and the hole can allow the locking pin to reciprocate along the axial direction of the core column. A first compression spring is provided in the notch of the core column, and the first compression spring forces the locking pin to approach the rotating sleeve. An inclined guide surface is formed between the inner wall of the expanded hole and the inner wall of the insertion hole. When the locking pin performs a rotation locking action, the inclined guide surface forces the locking pin to move away from the rotating sleeve; the key comprises a key body, which is provided with a locking body and a driving shaft, and the key body is provided with an active channel for accommodating the locking body, and the active channel runs through the outer circumferential surface of the key body. The cylinder is provided with a clamping hole for the clamping body to be clamped; the driving shaft is coaxially arranged with the key body, and the key body is provided with an axial hole for installing the driving shaft, the axial hole is connected with the movable channel, and the axial hole is for the telescopic rod to extend into so as to abut against the driving shaft; a second compression spring is provided between the bottom of the axial hole and the driving shaft, and the second compression spring is used to force the driving shaft to move away from the bottom of the axial hole; the first compression spring can drive the driving shaft to move close to the bottom of the axial hole through the telescopic rod; the size of the clamping body along the length direction of the movable channel is larger than the length of the movable channel, the outer peripheral surface of the driving shaft can force the clamping body part to enter the clamping hole, and the inner peripheral wall of the rotating sleeve can force the clamping body part to enter the axial hole.

[0010] By adopting the above technical solution, after the control terminal body is installed in place on the mounting seat, the key is inserted into the rotating sleeve. At this time, the end of the telescopic rod extends into the axial hole of the key and pushes the driving shaft, so that the driving shaft can force the clamping body to move to a position where it partially enters the clamping hole; as the key drives the rotating sleeve to rotate, the clamping pin rotates away from the longitudinal slot to achieve the effect of locking the control terminal body and the mounting seat; during the rotation of the clamping pin, the two oblique guide surfaces force the clamping pin to move away from the rotating sleeve, so that the second compression spring can force the driving shaft to separate from the clamping body, so that the rotating sleeve can return the clamping body to the active channel, and then the key can smoothly exit the rotating sleeve. When the control terminal body and the mounting base are unlocked by using the key, the key is reinserted into the rotating sleeve, and the rotating sleeve, the core column and the bayonet pin are driven to rotate by the key, so that the bayonet pin is rotated to a position aligned with the longitudinal slot; in the process of the key driving the bayonet pin to rotate to the unlocked state, the first compression spring indirectly pushes the drive shaft to move close to the bottom of the shaft hole, so that the drive shaft pushes the bayonet body to a position partially entering the bayonet hole, so that the key can take the lock core and the control terminal body away from the mounting base at the same time, thereby realizing the disassembly of the control terminal body.

[0011] Optionally, the engaging pin is symmetrically arranged along the center line of the core column, and both ends of the engaging pin extend out of the hole respectively. Two inclined guide surfaces are provided and are centrally symmetrically arranged along the center line of the core column.

[0012] By adopting the above technical solution, the two ends of the locking pin are symmetrically arranged along the center of the core column, so that the forces on the two ends of the locking pin are more balanced, which is beneficial to reducing the wear of the lock core caused by uneven force.

[0013] Optionally, a limiting protrusion is provided on the inner wall of the expanded hole, and the limiting protrusion is connected to an end of the inclined guide surface away from the rotating sleeve.

[0014] By adopting the above technical solution, when the engaging pin rotates and moves along the inclined guide surface to climb to a position away from the rotating sleeve, the limiting protrusion can prevent the engaging pin from continuing to rotate into the longitudinal slot.

[0015] Optionally, a positioning groove for avoiding the locking pin is provided at one end of the inclined guide surface away from the rotating sleeve.

[0016] By adopting the above technical solution, the positioning groove can keep the locking pin at a position away from the rotating sleeve, thereby reducing the situation where the first compression spring pushes the locking pin to slide along the inclined guide surface close to the rotating sleeve.

[0017] Optionally, the control terminal body is provided with a mounting hole adapted to the rotating sleeve, the outer circumference of the rotating sleeve is provided with a damping ring, and friction damping is provided between the damping ring and the inner circumference of the mounting hole.

[0018] By adopting the above technical solution, the damping ring can increase the friction damping between the rotating sleeve and the mounting hole, making the relative rotation between the rotating sleeve and the mounting hole smoother, and can make the installation state of the lock core on the control terminal body more stable; the damping ring can also isolate the fitting gap between the rotating sleeve and the mounting hole, which helps to improve the waterproof and dustproof effect of the locking structure.

[0019] Optionally, the control terminal body is provided with a mounting cylinder for installing the rotating sleeve, the inner hole of the mounting cylinder serves as a mounting hole, the core column penetrates into the bottom wall of the mounting cylinder and is fixedly connected to the bottom wall of the rotating sleeve, the core column is provided with a retaining spring, and the retaining spring is located on the outside of the mounting cylinder; the core column sleeve is provided with a spring washer and a limiting ring, the spring washer and the limiting ring are located between the retaining spring and the bottom wall of the mounting cylinder, and the spring washer is located between the limiting ring and the bottom wall of the mounting cylinder.

[0020] By adopting the above technical solution, the elastic force of the spring gasket acts on the bottom wall of the mounting tube and the limiting ring, and a larger friction damping can be formed between the spring gasket and the bottom wall of the mounting tube, which is beneficial to increase the resistance of the rotating sleeve during the rotation process relative to the mounting sleeve, making the rotation of the rotating sleeve smoother.

[0021] A circuit breaker comprises a circuit breaker body and any one of the above control terminal connection assemblies, wherein the control terminal connection assembly is installed at the bottom of the circuit breaker body.

[0022] By adopting the above technical solution, the control terminal connection assembly is installed at the bottom of the circuit breaker body. When the circuit breaker is installed at a high place, the control terminal connection assembly can be easier to disassemble and assemble.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The main structure of the control circuit of the circuit breaker is integrated on the control terminal body. The control terminal body is held on the mounting base by the connection between the first terminal and the second terminal. When the control terminal of the circuit breaker fails, the control terminal body can be removed from the mounting base while separating the first terminal from the second terminal, making the maintenance of the control terminal more convenient.

[0025] 2. After the control terminal body is installed in place, insert the key of the locking structure into the rotating sleeve, and then rotate the key so that the key drives the card pin through the rotating sleeve and the core column, so that the card pin rotates away from the longitudinal slot, so that the card pin is limited by the bottom of the expanded hole, thereby realizing the locking between the control terminal body and the mounting base. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a structural schematic diagram of the control terminal connection assembly of Example 1.

[0027] Figure 2 It is a schematic diagram of the structure of the control terminal body of Example 1.

[0028] Figure 3 It is a schematic diagram of the locking structure of Example 1.

[0029] Figure 4 It is a schematic diagram of the structure of the control terminal connection assembly of Example 1 after removing the core rod and the telescopic rod.

[0030] Figure 5 yes Figure 4 A magnified partial view of point A in the middle.

[0031] Figure 6 It is a structural schematic diagram of the key of Example 2.

[0032] Figure 7 It is a schematic structural diagram of the key of Example 3.

[0033] Description of reference numerals:

[0034] 1. Mounting seat; 11. Plug-in cylinder; 111. Plug hole; 112. Longitudinal slot; 113. Expanded hole; 114. Oblique guide surface; 116. Position-limiting protrusion; 2. Control terminal body; 21. Mounting cylinder; 211. Mounting hole; 3. Locking structure; 31. Lock core; 311. Rotating sleeve; 3111. Snap-on hole; 312. Core column; 3121. Missing groove; 313. Snap-on pin; 314. Telescopic rod; 3141. Wearing section; 315. End cap; 3151. Spring mounting hole; 316. First compression spring; 318, damping ring; 3191, retaining spring; 3192, spring washer; 3193, limiting ring; 32, key; 321, key body; 3211, movable channel; 32111, inner flange; 3212, axial hole; 3213, first hole section; 3214, second hole section; 322, snap-on body; 3221, fillet; 323, driving shaft; 3231, first rod section; 3232, second rod section; 3234, guide hole; 324, second compression spring; 4, first terminal; 5, second terminal. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] Example 1

[0037] The present application embodiment discloses a control terminal connection assembly. Figure 1 and Figure 2The control terminal connection assembly includes a mounting base 1 and a control terminal body 2. The mounting base 1 is a shell structure. The mounting base 1 is used to be installed and fixed on the shell of the circuit breaker. The control terminal body 2 is detachably installed on the inner side of the mounting base 1. The mounting base 1 is provided with a first wiring terminal 4. The first wiring segment is a female head of a cable connector. The control terminal body 2 is provided with a second wiring terminal 5. The second wiring terminal 5 is a female head of a cable connector. The second wiring terminal 5 is electrically connected to the first wiring terminal 4. The control terminal body 2 is provided with a locking structure 3. The locking structure 3 is used to lock the control terminal body 2 on the mounting base 1.

[0038] Reference Figure 3 The locking structure 3 includes a lock core 31 and a key 32. The lock core 31 is rotatably installed on the control terminal body 2. The lock core 31 includes a rotating sleeve 311. The control terminal body 2 is provided with a mounting cylinder 21. The inner hole of the mounting cylinder 21 is a mounting hole 211. The rotating sleeve 311 is rotatably installed in the mounting hole 211; the inner hole of the rotating sleeve 311 is matched with the key 32 to prevent rotation. The cross-sectional shape of the inner hole of the rotating sleeve 311 is set to a non-circular shape such as a polygon or an ellipse. The key 32 is used to be adapted to the shape of the inner hole of the rotating sleeve 311 at the part where it is plugged into the rotating sleeve 311. In this embodiment, the shape of the inner hole of the rotating sleeve 311 is set to be square.

[0039] The rotating sleeve 311 is fixedly provided with a core column 312, the core column 312 penetrates into the bottom wall of the mounting cylinder 21, and is coaxially fixedly connected with the rotating sleeve 311, the mounting seat 1 is provided with an inserting cylinder 11 for the core column 312 to be inserted, the inner hole of the inserting cylinder 11 is a plug hole 111, and the plug hole 111 is adapted to the core column 312; the core column 312 is provided with a snap-in pin 313, the snap-in pin 313 is perpendicular to the core column 312, the two ends of the snap-in pin 313 are symmetrical along the center line of the core column 312, the length of the snap-in pin 313 is greater than the diameter of the core column 312, so that the end of the snap-in pin 313 extends beyond the range of the circumferential surface of the core column 312; the inner wall of the plug hole 111 is provided with two longitudinal slots 112 for avoiding the snap-in pin 313, and the end of the plug hole 111 away from the rotating sleeve 311 is provided with an expansion hole 113 for the snap-in pin 313 to rotate.

[0040] When the control terminal body 2 is installed and placed on the mounting base 1, the engaging pin 313 moves through the longitudinal slot 112 and enters the expanded hole 113; after the control terminal body 2 is installed in place, the lock core 31 is rotated by the key 32 to rotate the engaging pin 313 of the lock core 31 away from the longitudinal slot 112, so that the engaging pin 313 is limited by the step surface between the inner wall of the expanded hole 113 and the inner wall of the insertion hole 111, thereby locking the control terminal body 2.

[0041] Reference Figure 3-5The core column 312 is coaxially penetrated with a telescopic rod 314, and the end of the telescopic rod 314 away from the rotating sleeve 311 is provided with a penetration section 3141, the diameter of the penetration section 3141 is smaller than the diameter of the main part of the telescopic rod 314, the penetration section 3141 of the telescopic rod 314 passes through the card pin 313, and is vertically welded and fixed to the card pin 313, and the end of the core column 312 away from the rotating sleeve 311 is provided with a notch 3121 for avoiding the card pin 313, and both ends of the notch 3121 simultaneously penetrate the outer circumference of the core column 312, and the end of the core column 312 away from the rotating sleeve 311 is threadedly connected An end cap 315 is provided, and the end cap 315 and the notch 3121 are combined to form a hole for the engaging pin 313 to reciprocate along the axial direction of the core column 312; the penetration section 3141 of the telescopic rod 314 is sleeved with a first compression spring 316, and the first compression spring 316 is located in the notch 3121. The end cap 315 is provided with a spring mounting hole 3151 for accommodating the first compression spring 316, one end of the first compression spring 316 abuts against the bottom of the spring mounting hole 3151, and the other end of the first compression spring 316 abuts against the outer peripheral surface of the engaging pin 313, and the first compression spring 316 forces the engaging pin 313 to approach the rotating sleeve 311;

[0042] The two longitudinal slots 112 divide the step surface between the inner wall of the expansion hole 113 and the inner wall of the insertion hole 111 into two oblique guide surfaces 114. The two oblique guide surfaces 114 are arranged symmetrically along the center line of the core column 312. When the locking pin 313 performs the rotation locking action, the oblique guide surfaces 114 force the locking pin 313 away from the rotating sleeve 311; the end of the oblique guide surface 114 away from the rotating sleeve 311 is provided with a positioning groove (not shown in the figure), and the positioning groove is aligned with the outer surface of the locking pin 313. The circumferential surface is adapted, and the positioning groove can position the end of the locking pin 313 so that the locking pin 313 is maintained at the end of the inclined guide surface 114 away from the rotating sleeve 311; the inner wall of the expansion hole 113 is provided with two limiting protrusions 116, and the two limiting protrusions 116 correspond to the two inclined guide surfaces 114 respectively, and the limiting protrusions 116 are connected with the corresponding inclined guide surfaces 114 away from the rotating sleeve 311. The limiting protrusions 116 can prevent the end of the locking pin 313 from leaving the inclined guide surface 114.

[0043] The key 32 includes a key body 321, which is provided with a clamping body 322 and a driving shaft 323. The key body 321 is provided with a movable channel 3211 for accommodating the clamping body 322. The extending direction of the movable channel 3211 is perpendicular to the length direction of the key body 321. The movable channel 3211 runs through the outer peripheral surface of the key body 321. The end of the movable channel 3211 away from the center of the key body 321 is provided with an inner flange 32111, which is used to prevent the clamping body 322 from escaping from the movable channel 3211. The rotating sleeve 311 is provided with a clamping hole 3111 for clamping the clamping body 322.

[0044] The driving shaft 323 is coaxially arranged with the key body 321, and the driving shaft 323 includes a first rod segment 3231 and a second rod segment 3232 which are coaxially arranged. The first rod segment 3231 and the second rod segment 3232 are both cylindrical structures, and the diameter of the first rod segment 3231 is larger than the diameter of the second rod segment 3232. The key body 321 is provided with an axial hole 3212 for installing the driving shaft 323, and the axial hole 3212 includes a first hole segment 3213 and a second hole segment 3214. The first hole segment 3213 is adapted to the first rod segment 3231, and the second rod segment 3232 is adapted to the second rod segment 3232. The first hole segment 3213 is connected to the movable channel 3211, and the first hole segment 3213 of the axial hole 3212 can The telescopic rod 314 is enough to extend into, so that the telescopic rod 314 can abut the end face of the first rod segment 3231 away from the second rod segment 3232; the first rod segment 3231 and the second rod segment 3232 are transitioned by an outer cone surface, and the outer cone surface between the first rod segment 3231 and the second rod segment 3232 can force the clamping body 322 to move away from the shaft hole 3212; a second compression spring 324 is provided between the bottom of the shaft hole 3212 and the driving shaft rod 323, and the second compression spring 324 is used to force the driving shaft rod 323 to move away from the bottom of the shaft hole 3212, and the elastic modulus of the second compression spring 324 is smaller than that of the first compression spring 316; the first compression spring 316 can drive the shaft rod 323 to move close to the bottom of the shaft hole 3212 through the telescopic rod 314.

[0045] Reference Figure 3 The clamping body 322 is a ball bearing, and the diameter of the clamping body 322 is greater than the length of the movable channel 3211; the outer peripheral surface of the first rod segment 3231 of the driving shaft 323 can force the clamping body 322 to partially enter the clamping hole 3111, and the inner peripheral wall of the mounting hole 211 can force the clamping body 322 to partially enter the clamping hole 3111. When the oblique guide surface 114 forces the clamping pin 313 and the telescopic rod 314 to move away from the rotating sleeve 311, the second compression spring 324 forces the driving shaft 323 to move from the state where the first rod segment 3231 abuts against the clamping body 322 to the state where the first rod segment 3231 is separated from the clamping body 322.

[0046] The process of locking the control terminal body 2 and the mounting base 1 by using the locking structure 3 is as follows: after the control terminal body 2 is installed in place on the mounting base 1, the key 32 is inserted into the rotating sleeve 311, at this time, the end of the telescopic rod 314 extends into the shaft hole 3212 of the key 32 and abuts against the driving shaft 323, and the first compression spring 316 can enable the telescopic rod 314 to indirectly push the driving shaft 323, so that the driving shaft 323 moves toward the bottom of the shaft hole 3212, so that the second compression spring 324 is compressed and deformed, and at the same time, the outer peripheral surface of the first rod section 3231 of the driving shaft 323 forces the clamping body 322 to move to a position where it partially enters the clamping hole 3111; as the key 32 drives the rotating sleeve 3 11 rotates, and the core column 312 drives the engaging pin 313 to rotate away from the longitudinal slot 112 through the notch 3121, thereby achieving the effect of locking the control terminal body 2 and the mounting base 1. During the rotation of the engaging pin 313, the two inclined guide surfaces 114 force the engaging pin 313 to move away from the rotating sleeve 311, so that the second compression spring 324 can force the driving shaft 323 to move away from the bottom of the shaft hole 3212, so that the first rod section 3231 of the driving shaft 323 is separated from the engaging body 322, so that the rotating sleeve 311 can return the part of the engaging body 322 that enters the engaging hole 3111 into the movable channel 3211, and then the key 32 can smoothly withdraw from the rotating sleeve 311.

[0047] When the control terminal body 2 and the mounting base 1 are unlocked by using the key 32, the key 32 is reinserted into the rotating sleeve 311, and the rotating sleeve 311, the stem 312 and the engaging pin 313 are rotated by using the key 32, so that the engaging pin 313 is rotated to a position aligned with the longitudinal slot 112, so that the engaging pin 313 can be withdrawn from the expansion hole 113 and the insertion hole 111; in the process of the engaging pin 313 driven by the key 32 to rotate to the unlocked state, the first compression spring 316 simultaneously forces the engaging pin 313 to rotate to the unlocked state. The connecting pin 313 moves close to the rotating sleeve 311, so that the first compression spring 316 indirectly pushes the driving shaft 323 to move close to the bottom of the shaft hole 3212, so that the second rod section 3232 of the driving shaft 323 pushes the locking body 322 to a position where it partially enters the locking hole 3111. When the locking body 322 is locked with the locking hole 3111, the key 32 can take the lock core 31 together with the control terminal body 2 away from the mounting base 1, thereby realizing the disassembly of the control terminal body 2.

[0048] It should be noted that when the key 32, the lock core 31 and the control terminal body 2 leave the mounting base 1, the locking pin 313 of the lock core 31 is exposed. At this time, the locking pin 313 can be manually moved to move the locking pin 313 away from the rotating sleeve 311, so that the locking state between the locking body 322 and the locking hole 3111 can be released, so that the key 32 can withdraw from the rotating sleeve 311.

[0049] Reference Figure 3In order to make the rotation of the rotating sleeve 311 more stable, the following configuration is made: a damping ring 318 is sleeved on the outer circumference of the rotating sleeve 311, and the damping ring 318 is made of rubber material. There is friction damping between the damping ring 318 and the inner circumference of the mounting hole 211, so that the rotating sleeve 311 can rotate more stably and can increase the sealing effect between the rotating sleeve 311 and the mounting sleeve.

[0050] Reference Figure 3 The stem 312 is provided with a circlip 3191, which is located outside the mounting tube 21; the stem 312 is sleeved with a spring washer 3192 and a stop ring 3193, which are located between the circlip 3191 and the bottom wall of the mounting tube 21, and the spring washer 3192 is located between the stop ring 3193 and the bottom wall of the mounting tube 21. A large friction damping can be formed between the spring washer 3192 and the bottom wall of the mounting tube 21, which is conducive to making the rotation of the rotating sleeve 311 more stable.

[0051] This embodiment also discloses a circuit breaker, including a circuit breaker body and the above-mentioned control terminal connection assembly, wherein the control terminal connection assembly is installed at the bottom of the circuit breaker body. When the circuit breaker is installed at a high place, the control terminal connection assembly is installed at the bottom of the circuit breaker body, which can be more convenient for disassembly and assembly.

[0052] Example 2

[0053] The difference between this embodiment and embodiment 1 is that the structure of the clamping body 322 in this embodiment is different from that in embodiment 1. The clamping body 322 in this embodiment is a cylindrical structure. The axial direction of the clamping body 322 is arranged along the length direction of the movable channel 3211. Rounded corners 3221 are respectively provided at both ends of the clamping body 322, so that the driving shaft 323 can move the cylinder through the rounded corners 3221.

[0054] Example 3

[0055] The difference between this embodiment and embodiment 1 is that the structure of the driving shaft 323 in this embodiment is different from that in embodiment 1. The driving shaft 323 in this embodiment is a round rod structure, and the shape of the shaft hole 3212 is adapted to the driving shaft 323. The diameter of the second compression spring 324 is smaller than the diameter of the driving shaft 323, and the driving shaft 323 is provided with a guide hole 3234 for accommodating and avoiding the end of the second compression spring 324. When the driving shaft 323 telescopes and moves in the shaft hole 3212, the driving shaft 323 moves the clamping body 322 through the end surface.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A control terminal connection assembly, characterized in that: The invention comprises a mounting base (1) and a control terminal body (2), wherein the mounting base (1) is used to be mounted and fixed on a housing of a circuit breaker, and the control terminal body (2) is detachably mounted on the mounting base (1), the mounting base (1) is provided with a first wiring terminal (4), and the control terminal body (2) is provided with a second wiring terminal (5), and the second wiring terminal (5) is electrically connected to the first wiring terminal (4); The control terminal body (2) is provided with a locking structure (3), the locking structure (3) comprising a lock core (31) and a key (32), the lock core (31) being connected to the control terminal body (2), the lock core (31) comprising a rotating sleeve (311), the inner hole of the rotating sleeve (311) being anti-rotationally matched with the key (32), the rotating sleeve (311) being rotatably connected to the control terminal body (2), the rotating sleeve (311) being provided with a core column (312), the core column (312) being concentrically arranged with the rotating sleeve (311), the The mounting seat (1) is provided with a socket (111) adapted to the stem (312); the stem (312) is provided with a snap-in pin (313), the snap-in pin (313) is perpendicular to the stem (312), and the end of the snap-in pin (313) extends beyond the circumferential surface of the stem (312); the inner wall of the socket (111) is provided with a longitudinal slot (112) for accommodating the snap-in pin (313), and an expansion hole (113) for the snap-in pin (313) to rotate is provided at one end of the socket (111) away from the rotating sleeve (311) 2. The control terminal connection assembly according to claim 1, characterized in that: The core column (312) is coaxially penetrated by a telescopic rod (314), the engaging pin (313) is vertically fixedly connected to the telescopic rod (314), one end of the core column (312) away from the rotating sleeve (311) is provided with a hole for accommodating the engaging pin (313), the hole can allow the engaging pin (313) to reciprocate along the axial direction of the core column (312), a first compression spring (316) is provided in the notch (3121) of the core column (312), the first compression spring (316) forces the engaging pin (313) to approach the rotating sleeve (311), an oblique guide surface (114) is formed between the inner wall of the expansion hole (113) and the inner wall of the insertion hole (111), and when the engaging pin (313) performs a rotation locking action, the oblique guide surface (114) forces the engaging pin (313) to move away from the rotating sleeve (311); The key (32) comprises a key body (321), the key body (321) is provided with a clamping body (322) and a driving shaft (323), the key body (321) is provided with a movable channel (3211) for accommodating the clamping body (322), the movable channel (3211) runs through the outer peripheral surface of the key body (321), and the rotating sleeve (311) is provided with a clamping hole (3111) for clamping the clamping body (322); the driving shaft (323) is coaxially arranged with the key body (321), the key body (321) is provided with an axial hole (3212) for installing the driving shaft (323), the axial hole (3212) is communicated with the movable channel (3211), and the telescopic rod (314) is inserted into the axial hole (3212) to abut against the driving shaft (323); A second compression spring (324) is provided between the bottom of the shaft hole (3212) and the driving shaft (323), and the second compression spring (324) is used to force the driving shaft (323) away from the bottom of the shaft hole (3212); the first compression spring (316) can drive the driving shaft (323) to move closer to the bottom of the shaft hole (3212) through the telescopic rod (314); the dimension of the clamping body (322) along the length direction of the movable channel (3211) is greater than the length of the movable channel (3211), the outer peripheral surface of the driving shaft (323) can force the clamping body (322) to partially enter the clamping hole (3111), and the inner peripheral wall of the rotating sleeve (311) can force the clamping body (322) to partially enter the shaft hole (3212).

3. The control terminal connection assembly according to claim 2, characterized in that: The engaging pin (313) is symmetrically arranged along the center line of the core column (312), and both ends of the engaging pin (313) extend out of the hole respectively. Two inclined guide surfaces (114) are provided and are centrally symmetrically arranged along the center line of the core column (312).

4. The control terminal connection assembly according to claim 2, characterized in that: The inner wall of the expansion hole (113) is provided with a limiting protrusion (116), and the limiting protrusion (116) is connected to an end of the inclined guide surface (114) away from the rotating sleeve (311).

5. The control terminal connection assembly according to claim 2, characterized in that: One end of the inclined guide surface (114) away from the rotating sleeve (311) is provided with a positioning groove for positioning the locking pin (313).

6. The control terminal connection assembly according to claim 1, characterized in that: The control terminal body (2) is provided with a mounting hole (211) adapted to the rotating sleeve (311), and the outer circumference of the rotating sleeve (311) is provided with a damping ring (318), and friction damping is provided between the damping ring (318) and the inner circumference of the mounting hole (211).

7. A circuit breaker, characterized in that: It comprises a circuit breaker body and the control terminal connection assembly according to any one of claims 1 to 6, wherein the control terminal connection assembly is installed at the bottom of the circuit breaker body.

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