An anti-vibration automobile power supply manual reset circuit breaker

Abstract

The utility model discloses an anti -vibration automobile power supply manual reset circuit breaker, including mounting seat and setting on the mounting seat manual reset subassembly. Manual reset subassembly includes operating shaft, knob and dial block, and operating shaft can move axially and rotate relative to mounting seat. Operating shaft is restricted in rotation in initial position, and operating shaft moves axially to work position and removes the rotation restriction after pressing knob, and then can drive dial block action to push driven member and complete reset. The structure is combined through pressing unlocking and rotating reset, reduces the possibility of operating shaft misrotation under the vehicle vibration working condition, improves the reliability of circuit breaker manual reset structure.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a vibration-resistant automotive power supply manual reset circuit breaker. Background Technology

[0002] Automotive power systems typically include circuit breakers to disconnect the circuit in case of overload, short circuit, or abnormal operating conditions, protecting onboard electrical equipment and wiring. Some automotive circuit breakers require a manual reset mechanism to return the operating mechanism to a usable state after tripping.

[0003] In existing manually reset circuit breakers, the manual reset structure typically includes a rotatable operating shaft. One end of the shaft is for manual operation by the operator, while the other end is used to actuate the driven components inside the circuit breaker, thereby achieving a reset. This type of structure can meet the manual reset requirements of general application scenarios.

[0004] However, the automotive operating environment involves continuous vibration and impact. Under non-human-operated conditions, the manual reset shaft may experience small-angle rotation, axial movement, or positional shift due to vibration, thus affecting the stability of its engagement with internal moving parts. Therefore, it is necessary to improve the limiting and reset structure of the manual reset shaft to enhance its reliability under vibration conditions. Utility Model Content

[0005] The purpose of this invention is to provide a vibration-resistant manual reset circuit breaker for automotive power supplies, in order to improve the problem that the existing manual reset operating shaft is prone to non-human rotation or positional displacement under vibration conditions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A vibration-resistant automotive power supply manual reset circuit breaker includes a mounting base. A manual reset assembly is mounted on the mounting base. The manual reset assembly includes an operating shaft, a knob located at the front end of the operating shaft, and a lever located at the rear end of the operating shaft. The operating shaft is axially movable and rotatable relative to the mounting base, and has an initial position and a working position. In the initial position, the operating shaft is restricted from rotation. When the knob is pressed, the operating shaft moves axially to the working position and the rotation restriction is released, allowing the operating shaft to rotate with the knob and actuate the lever.

[0007] Furthermore, a fixing sleeve is provided on the mounting base, the operating shaft passes through the fixing sleeve, and a locking fit structure for restricting the rotation of the operating shaft is provided between the fixing sleeve and the operating shaft.

[0008] Furthermore, the locking mechanism includes a locking block disposed on the operating shaft and a locking groove disposed on the fixed sleeve. When the operating shaft is in the initial position, the locking block and the locking groove engage to restrict the rotation of the operating shaft.

[0009] Furthermore, the fixing sleeve is provided with a semi-annular groove for the circumferential movement of the locking block, and the locking slot is provided on the semi-annular groove, with multiple locking slots arranged along the circumference of the semi-annular groove.

[0010] Furthermore, the operating shaft and the dial are connected by a spline and a spline sleeve. The spline is set on the operating shaft, and the spline sleeve is connected to the dial, so that the operating shaft can drive the dial to rotate synchronously when it rotates, and allows the operating shaft to move axially relative to the dial.

[0011] Furthermore, the manual reset assembly also includes a spring for driving the operating shaft to reset from the working position to the initial position; the toggle block is used to cooperate with the driven member on the back side of the mounting base to push the driven member to move when the operating shaft rotates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, the operating shaft is restricted from rotation in its initial position, reducing the possibility of unintended rotation under vibration conditions. When a reset is required, the operating shaft can be moved to the working position by pressing the knob before rotation, enabling manual reset. This structure combines pressing and rotating actions, which helps improve the operating shaft's ability to prevent accidental operation in vibration environments.

[0013] Meanwhile, the operating shaft and the lever are connected in a way that can transmit torque and allow axial movement, so that the operating shaft can maintain cooperation with the rear lever during axial pressing and rotation, which helps to ensure the continuity and stability of the manual reset action.

[0014] In addition, the spring enables the operating shaft to return to its initial position after the reset operation is completed, allowing the operating shaft to re-enter the restricted state, thereby improving the reliability of the circuit breaker's manual reset structure. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a vibration-resistant automotive power supply manual reset circuit breaker; Figure 2 This is a schematic diagram of the overall structure of a vibration-resistant automotive power supply manual reset circuit breaker from another angle. Figure 3 for Figure 2 The diagram shown is an enlarged schematic of the structure of section A of a vibration-resistant automotive power supply manual reset circuit breaker. Figure 4 A schematic diagram of the manual reset component in a vibration-resistant automotive power manual reset circuit breaker. Figure 5 An exploded schematic diagram of the manual reset component in a vibration-resistant automotive power manual reset circuit breaker; Figure 6 This is a schematic diagram of the cooperation structure between the rear end of the manual reset component and the driven component in a vibration-resistant automotive power manual reset circuit breaker.

[0016] Attached icon number 1. Mounting base; 2. Fixing sleeve; 21. Slot; 3. Manual reset assembly; 31. Knob; 32. Locking block; 33. Spline; 34. Spline sleeve; 35. Toggle block; 36. Spring; 37. Operating shaft; 4. Elastic element; 5. Driven element. Detailed Implementation

[0017] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application.

[0018] like Figures 1 to 6 As shown, this embodiment provides a vibration-resistant automotive power supply manual reset circuit breaker, which includes a mounting base 1 for supporting the circuit breaker's operating mechanism and a manual reset assembly 3. The manual reset assembly 3 is mounted on the mounting base 1 and is used to manually reset the operating mechanism after the circuit breaker operates. The manual reset assembly 3 employs a combination of press-to-unlock, rotation-to-reset, and automatic return mechanisms, restricting the rotation of the operating shaft 37 under normal conditions, thereby reducing the possibility of unauthorized rotation of the operating shaft 37 under vehicle vibration conditions.

[0019] like Figure 1 and Figure 2 As shown, a fixing sleeve 2 is provided on the mounting base 1. The fixing sleeve 2 is installed on the mounting base 1 and is used to support and limit the operation shaft 37. The operation shaft 37 passes through the fixing sleeve 2 and can move axially relative to the fixing sleeve 2. It can also rotate around its own axis after the limit is released. One end of the operation shaft 37 is connected to a knob 31, which is located on the front side of the mounting base 1 for the operator to press and rotate. The other end of the operation shaft 37 is provided with a toggle block 35, which is located on the back side of the mounting base 1. The toggle block 35 is used to push the driven member 5 on the back side of the mounting base 1 to move when the operation shaft 37 rotates, thereby completing the reset of the circuit breaker operating mechanism.

[0020] like Figures 3 to 6As shown, the operating shaft 37 is provided with a locking block 32, and the fixed sleeve 2 is provided with a locking groove 21 that cooperates with the locking block 32. When the operating shaft 37 is in the initial position, the locking block 32 is embedded in the locking groove 21, and the locking block 32 and the locking groove 21 form a circumferential limit, preventing the operating shaft 37 from rotating directly. Therefore, when the vehicle vibrates or is impacted during driving, even if the knob 31 is slightly shaken, the operating shaft 37 will not directly drive the toggle block 35 to move, thereby avoiding the manual reset component 3 from being accidentally triggered under non-human operation.

[0021] The fixed sleeve 2 also has a semi-annular groove for the circumferential movement of the locking block 32, and a locking slot 21 is disposed on the semi-annular groove. The semi-annular groove extends circumferentially along the fixed sleeve 2, and the locking block 32 can move along the corresponding circumferential path of the semi-annular groove after disengaging from the locking slot 21. Multiple locking slots 21 can be provided along the circumferential direction of the semi-annular groove, and multiple locking slots 21 correspond to different limit positions of the operating shaft 37. After the operating shaft 37 rotates from one limit position to another limit position, the locking block 32 can re-enter the corresponding locking slot 21, so that the operating shaft 37 is restricted from rotation again. Through this structure, the manual reset assembly 3 can form a stable limit state before and after reset.

[0022] The manual reset assembly 3 also includes a spring 36, which returns the operating shaft 37 from its pressed working position to its initial position. The spring 36 can be sleeved on the outside of the operating shaft 37, with one end abutting against a part fixed to the mounting base 1 or the fixing sleeve 2, and the other end abutting against a relevant limiting part on the operating shaft 37 or a transmission part that cooperates with the operating shaft 37. When the operator presses the knob 31, the operating shaft 37 moves axially, compressing the spring 36; when the operator releases the knob 31, the spring 36 releases its elastic force and pushes the operating shaft 37 back axially, causing the locking block 32 to re-enter the slot 21. The spring 36 allows the operating shaft 37 to automatically return to its restricted state after the reset operation is completed, without requiring additional back-pushing action.

[0023] A spline 33 and a spline sleeve 34 are provided between the operating shaft 37 and the lever 35. The spline 33 is mounted on the operating shaft 37, and the spline sleeve 34 is connected to the lever 35, with the spline 33 and spline sleeve 34 engaging with each other. This engagement structure can transmit torque to the lever 35 when the operating shaft 37 rotates, causing the lever 35 to rotate synchronously with the operating shaft 37; at the same time, the spline 33 can move axially relative to the spline sleeve 34, so that the operating shaft 37 can still maintain a circumferential transmission relationship with the lever 35 when pressed. Thus, the operating shaft 37 can both perform axial pressing unlock and reliably drive the lever 35 to move when rotated.

[0024] like Figure 6As shown, a driven member 5 is provided on the back side of the mounting base 1, and the toggle block 35 cooperates with the driven member 5. The driven member 5 can be a reset force-bearing component in the circuit breaker operating mechanism, which can swing, rotate, or displace under the push of the toggle block 35 to restore the operating mechanism to the reset state. The driven member 5 is also connected to or abuts against an elastic member 4, which is used to keep the driven member 5 in its initial position, or to return the driven member 5 to its initial position after it is pushed by the toggle block 35. The elastic member 4 can be in the form of a tension spring, torsion spring, or compression spring, as long as it can provide a return force to the driven member 5.

[0025] The manual reset process in this embodiment is as follows.

[0026] In the normal operating state of the circuit breaker or in the initial state after reset, the operating shaft 37 is in its initial position, and the locking block 32 is embedded in the locking groove 21 of the fixing sleeve 2. At this time, the operating shaft 37 is restricted by the cooperation between the locking block 32 and the locking groove 21 and cannot rotate directly around its own axis. The toggle block 35 also remains at its initial angle and does not effectively push the driven member 5. Because the operating shaft 37 is circumferentially restricted in this state, the slight vibration of the knob 31 caused by vehicle vibration is not easily converted into a pushing action of the toggle block 35 on the driven member 5.

[0027] After the circuit breaker completes a protection action, manual disconnection action, or other action requiring reset, the operator applies axial pressure to the knob 31. The knob 31 drives the operating shaft 37 to move axially along the fixed sleeve 2, causing the locking block 32 to disengage from the slot 21. After the locking block 32 disengages from the slot 21, the operating shaft 37 moves from its initial position to its working position. At this time, the rotation restriction of the operating shaft 37 is released, and the locking block 32 enters a state where it can move circumferentially along the semi-annular groove.

[0028] With the knob 31 pressed down, the operator continues to rotate it, causing the operating shaft 37 to rotate. The operating shaft 37, through the engagement between the spline 33 and the spline sleeve 34, drives the toggle block 35 to rotate synchronously. During rotation, the toggle block 35 pushes the driven member 5, causing it to reset the circuit breaker operating mechanism. When the driven member 5 actuates, the elastic member 4 undergoes elastic deformation and stores return energy.

[0029] When knob 31 is rotated to the predetermined angle after reset, the locking block 32 corresponds to the position of another slot 21 on the fixed sleeve 2. After the operator releases knob 31, spring 36 pushes operating shaft 37 axially back to the initial position, locking block 32 enters the corresponding slot 21, and operating shaft 37 is again circumferentially limited. At the same time, driven member 5 can be held or returned to the predetermined position under the action of elastic member 4, and toggle block 35 is also held at the angle after reset along with operating shaft 37. Thus, manual reset assembly 3 completes one reset operation and re-enters the vibration-resistant and anti-malfunction state.

[0030] With the above structure, the reset action of the operating shaft 37 requires both pressing and rotation to be satisfied simultaneously. Simple vibration and shaking are insufficient to disengage the locking block 32 from the locking groove 21, nor is it sufficient to bring the operating shaft 37 into a working state capable of driving the toggle block 35. The limiting fit formed between the fixed sleeve 2, the locking block 32, and the locking groove 21 ensures that the operating shaft 37 has a stable holding position under normal conditions; the spring 36 allows the operating shaft 37 to automatically return to its original position after operation; and the fit between the spline 33 and the spline sleeve 34 ensures that the operating shaft 37 can reliably transmit torque to the toggle block 35 during axial movement. This structure is relatively compact and suitable for placement in the operating mechanism of an automotive power circuit breaker.

[0031] In this embodiment, the knob 31 can be located on the front side of the mounting base 1, allowing the operator to directly press and rotate it from the outside of the circuit breaker. The fixing sleeve 2 is mounted on the mounting base 1, providing guidance for the operating shaft 37 and circumferentially limiting the operating shaft 37 through the cooperation of the slot 21 and the locking block 32. The toggle block 35 is located on the back side of the mounting base 1, allowing it to cooperate with the driven component 5 inside the circuit breaker. The knob 31 on the front side, the operating shaft 37 passing through the fixing sleeve 2, and the toggle block 35 on the back side together form a manual reset transmission path.

[0032] During assembly, after the operating shaft 37 passes through the fixed sleeve 2, the knob 31 is connected to the front end of the operating shaft 37, and the lever 35 is connected to the rear end of the operating shaft 37 via the spline sleeve 34. A spring 36 is installed on the outside of the operating shaft 37 and applies an elastic force towards the initial position. A locking block 32 is located on the outer periphery of the operating shaft 37, and a slot 21 is provided on the fixed sleeve 2. After the operating shaft 37 is inserted into the fixed sleeve 2, the locking block 32 can engage with the slot 21 to form a locking state. By controlling the circumferential position of the slot 21 on the fixed sleeve 2, the initial angle and the angle after reset of the operating shaft 37 can be determined.

[0033] In this embodiment, the semi-annular groove on the fixed sleeve 2 provides a rotation path for the locking block 32. After the operator presses the knob 31, the locking block 32 exits from the locking slot 21 and enters the semi-annular groove, and then moves along the semi-annular groove as the operating shaft 37 rotates. The semi-annular groove can limit the range of motion of the locking block 32 and prevent the operating shaft 37 from rotating too much. The locking slot 21 is set at the beginning end, end end or other predetermined position of the semi-annular groove, so that the operating shaft 37 can be limited at different angles. By setting multiple locking slots 21, the manual reset component 3 can be reliably positioned at different stages.

[0034] The shape of the lever 35 can be set according to the position and force direction of the driven member 5. The lever 35 can be a plate-shaped lever, a lug-shaped lever, or a lever with an abutment surface. When the lever 35 rotates with the operating shaft 37, its abutment surface pushes the driven member 5, causing the driven member 5 to perform a corresponding action. After the action, the driven member 5 can be returned to its original position by the elastic element 4, or remain in the reset state after the lever 35 is removed. The elastic element 4 can reduce the free swaying of the driven member 5 in a vibration environment, making the cooperation between the driven member 5 and the lever 35 more stable.

[0035] During operation, if the circuit breaker trips due to overload, short circuit, or manual operation, the operating mechanism may enter a state requiring reset. In this case, the operator presses knob 31 to move the operating shaft 37 from its initial position to the working position; then, rotating knob 31 causes the toggle block 35 to push the driven member 5 to complete the reset. After reset, releasing knob 31 allows the operating shaft 37 to return to its original position under the action of spring 36 and be repositioned by the retaining groove 21. Because the operating shaft 37 is always positioned when not in operation, vehicle vibrations are less likely to cause the toggle block 35 to mistakenly push the driven member 5, thus improving the reliability of the circuit breaker's manual reset structure in automotive environments.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vibration-resistant automotive power supply manual reset circuit breaker, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a manual reset assembly (3), which includes an operating shaft (37), a knob (31) located at the front end of the operating shaft (37), and a lever (35) located at the rear end of the operating shaft (37). The operating shaft (37) can move and rotate axially relative to the mounting base (1). The operating shaft (37) has an initial position and a working position. In the initial position, the operating shaft (37) is restricted from rotating. When the knob (31) is pressed, the operating shaft (37) moves axially to the working position and releases the rotation restriction, so that the operating shaft (37) can rotate with the knob (31) and drive the lever (35) to move.

2. The anti-vibration automotive power supply manual reset circuit breaker according to claim 1, characterized in that: A fixing sleeve (2) is provided on the mounting base (1), and the operating shaft (37) passes through the fixing sleeve (2). A locking fit structure for restricting the rotation of the operating shaft (37) is provided between the fixing sleeve (2) and the operating shaft (37).

3. The anti-vibration automotive power supply manual reset circuit breaker according to claim 2, characterized in that: The locking mechanism includes a locking block (32) on the operating shaft (37) and a locking groove (21) on the fixed sleeve (2). When the operating shaft (37) is in the initial position, the locking block (32) and the locking groove (21) cooperate to restrict the rotation of the operating shaft (37).

4. The anti-vibration automotive power supply manual reset circuit breaker according to claim 3, characterized in that: The fixed sleeve (2) is provided with a semi-annular groove for the circumferential movement of the locking block (32), and the locking slot (21) is provided on the semi-annular groove. Multiple locking slots (21) are provided along the circumference of the semi-annular groove.

5. The anti-vibration automotive power supply manual reset circuit breaker according to claim 1, characterized in that: The operating shaft (37) and the lever (35) are connected by a spline (33) and a spline sleeve (34). The spline (33) is set on the operating shaft (37), and the spline sleeve (34) is connected to the lever (35), so that the operating shaft (37) can drive the lever (35) to rotate synchronously when it rotates, and allow the operating shaft (37) to move axially relative to the lever (35).

6. The anti-vibration automotive power supply manual reset circuit breaker according to claim 1, characterized in that: The manual reset assembly (3) also includes a spring (36) for driving the operating shaft (37) to reset from the working position to the initial position; the toggle block (35) is used to cooperate with the driven member (5) on the back side of the mounting base (1) to push the driven member (5) to move when the operating shaft (37) rotates.

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