Power supply main switch for automobile

Abstract

The utility model relates to a power main switch for an automobile, and belongs to the technical field of automobile power switches, and the power main switch comprises a switch housing which is provided with a mounting cavity and is internally provided with a conductive column with one end protruding out of the mounting cavity; the circuit on-off assembly comprises a sliding base column which is mounted in the mounting cavity and can slide in the mounting cavity; the rotating shaft is rotationally installed in the switch shell and drives the sliding base column to move in the direction close to the conductive column; the rotating key is mounted on the switch shell and used for driving the rotating shaft to rotate; an inclined groove is formed in the outer wall of the sliding base column, a driving supporting lug which is inserted into the inclined groove and moves in the inclined groove is arranged on the side, close to the sliding base column, of the rotating shaft, and a limiting protrusion for limiting the rotating shaft after rotation is arranged on the groove wall, close to the side of the sliding base column, of the inclined groove. The inclined groove is provided with a power-off groove and a power-on groove through the limiting protrusion. The automobile main power switch has the effect of improving the stability of the rotating shaft in the automobile main power switch after rotation.

Description

Technical Field

[0001] The present application relates to the technical field of automobile power switches, and in particular to a main power switch for an automobile. Background Art

[0002] The main function of the car power switch is to control the power output of the car battery, thereby controlling the on and off of the entire car circuit system. The car power switch includes a base, a conductive column, a circuit disconnection component, a rotating shaft and a rotating key. The conductive column, the circuit disconnection component, the rotating shaft and the rotating key are all connected to the base. The conductive column is installed on the base to connect to the cable connected to the battery. The rotating key is used to control the rotation of the rotating shaft. After the rotating shaft rotates, it can control the lifting and lowering of the circuit disconnection component, thereby controlling the circuit disconnection component to contact or disconnect with the conductive column to achieve power on or off.

[0003] In the related art, an inclined groove is provided on a component in a circuit breaker assembly, and the inclined groove starts on the outer wall of the corresponding component; a driving block inserted into the inclined groove is provided on the rotating shaft, and as the rotating shaft rotates, the driving block will move in the inclined groove, thereby driving the entire circuit breaker assembly to rise and fall to achieve contact or disconnection with the conductive column.

[0004] Regarding the above-mentioned related technologies, when a vehicle travels on a bumpy road for a long time, the main power switch of the vehicle will also vibrate, and the rotating shaft is not limited after rotation. The rotating shaft is prone to slight rotation under the action of vibration and the inclined groove. The slight rotation of the rotating shaft will cause the circuit breaker component to rise, which will make the main power switch of the vehicle prone to poor contact during the vibration process. In severe cases, it will cause the entire vehicle circuit system to be disconnected. Utility Model Content

[0005] In order to improve the stability of a rotating shaft in a main power switch of an automobile after rotation, the present application provides a main power switch for an automobile.

[0006] The present application provides a main power switch for an automobile, which adopts the following technical solution:

[0007] A main power switch for an automobile comprises: a switch housing, a mounting cavity is provided, and a conductive column with one end protruding from the mounting cavity is installed in the mounting cavity;

[0008] A circuit disconnecting assembly, comprising a sliding base column installed in the installation cavity and capable of sliding in the installation cavity, and a reset spring driving the sliding base column to automatically reset after sliding;

[0009] A rotating shaft, rotatably mounted inside the switch housing and driving the sliding base column to move toward the conductive column;

[0010] A rotary key, mounted on the switch housing and used to drive the rotating shaft to rotate;

[0011] An inclined groove is arranged on the outer wall of the sliding base column, a driving support ear inserted into and moving in the inclined groove is arranged on the side of the rotating shaft close to the sliding base column, a limiting protrusion for limiting the rotating shaft after rotation is arranged on the groove wall of the inclined groove close to the sliding base column, and the inclined groove is formed with a power-off groove and a power-on groove through the limiting protrusion.

[0012] Preferably, the limiting protrusion is provided with an arc transition surface for facilitating the driving ear to move from the power-off groove to the power-on groove.

[0013] Preferably, a key hole is formed on a side of the switch housing facing away from the conductive column, and a pin shaft is integrally formed on the rotary key and is inserted into the key hole to drive the rotating shaft to rotate.

[0014] Preferably, a first protrusion and a second protrusion are provided on the outer wall of the pin shaft, the first protrusion and the second protrusion are arranged circumferentially at intervals on the pin shaft, and a length of the first protrusion extending radially along the pin shaft is greater than a length of the second protrusion extending radially along the pin shaft;

[0015] A first slot for inserting the first protrusion and a second slot for inserting the second protrusion are provided on one side of the switch housing where the key insertion hole is provided, and a radial extension length of the second slot along the pin shaft is smaller than a radial extension length of the first protrusion along the pin shaft.

[0016] Preferably, the rotary key is provided with a screw for fixing the pin shaft and the rotating shaft together.

[0017] Preferably, a key protection shell is arranged on a side of the switch housing close to the rotary key, and a rotation groove for inserting and rotating a part of the rotary key is opened on a side of the key protection shell away from the conductive column.

[0018] Preferably, a locking gap is provided between one side of the rotary key and the groove wall corresponding to the rotating groove, and a locking hole connected to the locking gap is provided on the outer wall of the key protection shell, and a lock head which can be inserted into the locking gap to limit the rotation of the rotary key passes through the locking hole.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When the driving lug on the rotating shaft rotates to the power-on slot, the entire circuit system of the car is powered on. At this time, when the driving lug rotates and resets, it will be limited by the limit protrusion and is not easy to automatically rotate into the power-off slot. If the rotating shaft needs to be rotated into the power-off slot, a certain amount of force is required to rotate the rotating shaft, thereby improving the stability of the rotating shaft after the rotating shaft rotates to power on the car circuit;

[0021] 2. After the rotary key is inserted into the key insertion hole, the first protrusion and the second protrusion are also inserted into the switch housing from the corresponding first slot and the second slot respectively. After the rotary key drives the rotating shaft to rotate so that the automobile circuit is powered on, the first protrusion will be rotated to the position where the second slot is located. However, since the extension length of the first protrusion along the radial direction of the pin shaft is greater than the extension length of the second slot along the radial direction of the pin shaft, when the power switch is turned on, the rotary key is not easy to be pulled out of the key insertion hole, thereby improving a certain degree of safety;

[0022] 3. The rotating key is fixed to the rotating shaft by screws, so that the rotating key is not easy to fall off due to road bumps or car vibrations, whether the power is turned on or off;

[0023] 4. When the car power is off, the lock can be inserted into the locking gap through the locking hole and then locked. At this time, the lock will limit the rotation of the rotary key, making it difficult to turn on the power switch, thereby preventing strangers from turning on the car power without authorization (such as excavators and other engineering vehicles on construction sites) and driving away the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded schematic diagram of the main power switch in Example 1 of the present application.

[0025] Figure 2 It is an exploded schematic diagram of the rotating shaft and the circuit breaking component in the first embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram of the rotating key in Example 1 of the present application.

[0027] Figure 4 It is a schematic structural diagram of the external threaded column and the key protection shell in the first embodiment of the present application.

[0028] Figure 5 It is a structural schematic diagram of the rotating key in the second embodiment of the present application.

[0029] Figure 6 It is a structural schematic diagram of the rotating key and the key protection shell in the third embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of the matching structure of the rotary key, the key protection shell and the lock in the third embodiment of the present application.

[0031] Explanation of the reference numerals: 1. switch housing; 11. mounting cavity; 12. conductive column; 13. lower housing; 14. upper housing; 15. externally threaded ring column; 151. key insertion hole; 152. first slot; 153. second slot; 16. key protection shell; 161. rotation slot; 162. locking hole; 17. lock head; 2. circuit disconnecting assembly; 21. sliding base column; 211. inclined slot; 212. limiting protrusion; 213. power-off slot; 214. power-on slot; 22. reset spring; 23. conductive sheet; 24. floating spring; 25. assembly slot; 3. rotating shaft; 31. driving lug; 32. keyway; 4. rotating key; 41. pin shaft; 42. first protrusion; 43. second protrusion; 44. bolt hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-7 This application is described in further detail.

[0033] The present application discloses a main power switch for an automobile. Figure 1 The main power switch for automobile includes a switch housing 1, a circuit breaker assembly 2, a rotating shaft 3 and a rotating key 4. An installation cavity 11 is provided inside the switch housing 1, and a conductive column 12 for connecting to the cable in the automobile battery is installed in the installation cavity 11, and one end of the conductive column 12 passes through the switch housing 1 and is exposed to the outside. The circuit breaker assembly 2 is slidably installed in the installation cavity 11 for contacting or disconnecting with the conductive column 12, and the rotating shaft 3 is rotatably installed in the switch housing 1 for driving the circuit breaker assembly 2 to slide, and the rotating shaft 3 does not protrude from the switch housing 1. The rotating key 4 can be inserted into the switch housing 1 to drive the rotating shaft 3 to rotate. Among them, a limiting mechanism is provided on the circuit breaker assembly 2 to limit the rotating shaft 3 after rotation, so that the rotating shaft 3 can rotate and the rotating shaft 3 is not easy to rotate and reset alone due to vibration after the automobile power switch is turned on.

[0034] Reference Figure 1 and Figure 2 The switch housing 1 includes a lower housing 13 and an upper housing 14, and the mounting cavity 11 includes a lower mounting groove and an upper mounting groove. The lower mounting groove is opened on a side of the lower housing 13 close to the upper housing 14; the upper mounting groove is opened on a side of the upper housing 14 close to the lower housing 13. The conductive column 12 is located in the lower mounting groove, and one end of the conductive column 12 away from the upper housing 14 passes through the lower housing 13 and is exposed outside the lower housing 13. The lower housing 13 and the upper housing 14 are fixed together by screws. The circuit breaker component 2 is partially located in the upper mounting groove; and partially located in the lower mounting groove. The rotating shaft 3 is rotatably mounted on the upper housing 14.

[0035] Reference Figure 1 and Figure 2The circuit disconnecting assembly 2 includes a sliding column 21, a reset spring 22, a conductive sheet 23 and a floating spring 24. The reset spring 22 is located at one end of the sliding column 21 close to the bottom of the mounting groove. One end of the reset spring 22 abuts against the bottom of the mounting groove; the other end abuts against the sliding column 21 to drive the sliding column 21 to always have a tendency to move toward the upper shell 14. An assembly groove 25 is provided on the side wall of the sliding column 21. The assembly groove 25 penetrates the sliding column 21 along its own opening direction, that is, the direction in which the assembly groove 25 penetrates the sliding column 21 is perpendicular to the sliding direction of the sliding column 21. The conductive sheet 23 is inserted into the assembly groove 25, and the two ends of the conductive sheet 23 protrude from the two ends of the opening of the assembly groove 25, so as to facilitate contact with the conductive column 12 to achieve circuit connection. The floating spring 24 is located in the assembly slot 25, and one end of the floating spring 24 abuts against the conductive sheet 23; the other end abuts against the slot wall of the assembly slot 25 close to the upper shell 14, so that the conductive sheet 23 has a floating value after contacting the conductive column 12, and at the same time, drives the conductive sheet 23 and the conductive column 12 to be in stable contact.

[0036] Reference Figure 1 and Figure 2 The outer wall of the sliding column 21 is provided with an inclined groove 211, which gradually inclines along the circumference of the sliding column 21 from the side of the sliding column 21 close to the upper shell 14 to the side of the sliding column 21 close to the lower shell 13. The inclined groove 211 is located on the side of the assembly groove 25 close to the upper shell 14, and the inclined groove 211 is not connected to the assembly groove 25. A driving lug 31 is integrally formed on the side of the rotating shaft 3 close to the sliding column 21, which is inserted into the inclined groove 211 and moves in the inclined groove 211. As the rotating shaft 3 rotates, the driving lug 31 moves from the lowest end of the inclined groove 211 (i.e., the end close to the lower shell 13) to the highest end (i.e., the movement close to the upper shell 14), thereby driving the sliding column 21 to descend. The descent of the sliding column 21 will drive the conductive sheet 23 and the floating spring 24 to descend synchronously, thereby making the conductive sheet 23 contact the conductive column 12. If the rotating shaft 3 is rotated in the reverse direction, the sliding base column 21 automatically moves toward the upper housing 14 under the action of the return spring 22 , so that the conductive sheet 23 and the conductive column 12 are disconnected.

[0037] In this embodiment, the limiting mechanism is preferably a limiting protrusion 212, which is located on the groove wall of the inclined groove 211 close to the lower shell 13, and the limiting protrusion 212 is integrally formed with the sliding base column 21. The inclined groove 211 is divided into a power-off groove 213 and a power-on groove 214 by the limiting protrusion 212. The power-off groove 213 is located on the side of the limiting protrusion 212 close to the lower shell 13 along the extension direction of the inclined groove 211; the power-on groove 214 is located on the side of the limiting protrusion 212 close to the upper shell 14 along the extension direction of the inclined groove 211. When the driving lug 31 is located in the power-off groove 213, the conductive sheet 23 does not contact the conductive column 12; when the driving lug 31 is located in the power-on groove 214, the conductive sheet 23 contacts the conductive column 12. Under the action of the limiting protrusion 212, the driving ear 31 is not easy to move from the power-on slot 214 to the power-off slot 213. If the driving ear 31 needs to be moved from the power-on slot 214 to the power-off slot 213, a certain force needs to be applied to the rotating shaft 3, thereby improving the stability of the rotating shaft 3 after rotation.

[0038] In addition, in order to drive the support ear 31 to move from the power-off groove 213 to the power-on groove 214 or from the power-on groove 214 to the power-off groove 213 , a circular arc transition surface is provided on the limiting protrusion 212 .

[0039] Combination Figure 1 Reference Figure 3 and Figure 4 The end of the upper shell 14 away from the lower shell 13 is integrally formed with an external threaded ring column 15, and the end of the external threaded ring column 15 close to the upper shell 14 is provided with an opening connected to the mounting upper groove, and the end of the rotating shaft 3 away from the driving lug 31 passes through the opening and is inserted into the internal part of the external threaded ring. The opening on the side of the external threaded ring column 15 away from the upper shell 14 is set as a key insertion hole 151, and the rotating key 4 is integrally formed with a pin shaft 41 inserted into the key insertion hole 151 to drive the rotating shaft 3 to rotate. The rotating key 4 can be pulled out from the external threaded ring column 15 when the power is off.

[0040] Reference Figure 3 and Figure 4Two first protrusions 42 and two second protrusions 43 are integrally formed on the outer wall of the pin shaft 41. The two first protrusions 42 are arranged at a 180-degree interval on the pin shaft 41, and the two second protrusions 43 are also arranged at a 180-degree interval, wherein any first protrusion 42 and any second protrusion 43 are arranged at a 90-degree interval. The length of the first protrusion 42 extending along the radial direction of the pin shaft 41 is greater than the length of the second protrusion 43 extending along the radial direction of the pin shaft 41. A first slot 152 for inserting the first protrusion 42 and a second slot 153 for inserting the second protrusion 43 are provided at the key hole 151 of the external threaded ring column 15. Since two first protrusions 42 and two second protrusions 43 are each provided, two first slots 152 and two second slots 153 are also provided. The two first slots 152 are arranged at a 180-degree interval, and the two second slots 153 are also arranged at a 180-degree interval, and any first slot 152 is arranged at a 90-degree interval with any second slot 153. The radial extension length of the second slot 153 along the pin shaft 41 is smaller than the radial extension length of the pin shaft 41 of the first protrusion 42. With such a design, it is not easy to be pulled out when the rotary key 4 is turned to turn the car power on.

[0041] It is worth noting that the inner diameter of the external threaded ring column 15 is larger than the size of the key hole 151 , so that the first protrusion 42 and the second protrusion 43 can rotate freely inside the external threaded ring column 15 .

[0042] Reference Figure 3 and Figure 4 A key slot 32 for inserting two first protrusions 42 and two second protrusions 43 is provided on one side of the rotating shaft 3 close to the rotating key 4 , so that the rotating shaft 3 can rotate synchronously with the rotation of the rotating key 4 .

[0043] The external thread column is sleeved with a key protection shell 16, which is fixed by a nut and limited on the upper shell 14. The key protection shell 16 is provided with a rotation groove 161 for inserting and rotating a part of the rotation key 4 on one side away from the upper shell 14.

[0044] The implementation principle of a main power switch for an automobile in an embodiment of the present application is as follows: when the driving support ear 31 on the rotating shaft 3 rotates to the power-on slot 214, the entire circuit system of the automobile is energized. At this time, when the driving support ear 31 rotates and resets, it will be limited by the limiting protrusion 212 and is not easy to automatically rotate into the power-off slot 213. If it is necessary to rotate the rotating shaft 3 into the power-off slot 213, a certain amount of force is required to rotate the rotating shaft 3, thereby improving the stability of the rotating shaft 3 after the rotating shaft 3 rotates to energize the automobile circuit. After the rotary key 4 is inserted into the key insertion hole 151, the first protrusion 42 and the second protrusion 43 are also inserted into the switch housing 1 from the corresponding first slot 152 and second slot 153 respectively. After the rotary key 4 drives the rotating shaft 3 to rotate so that the vehicle circuit is energized, the first protrusion 42 will be rotated to the position of the second slot 153. However, since the radial extension length of the first protrusion 42 along the pin shaft 41 is greater than the radial extension length of the second slot 153 along the pin shaft 41, when the power switch is turned on, the rotary key 4 is not easy to be pulled out of the key insertion hole 151, thereby improving a certain degree of safety.

[0045] Example 2, refer to Figure 1 and Figure 5 The difference between this embodiment and the first embodiment is that a bolt hole 44 is provided on the side of the rotary key 4 facing away from the upper shell 14, a screw is installed in the bolt hole 44, the threaded end of the screw passes through the rotary key 4 and the pin 41 and is threadedly installed on the rotating shaft 3, so that the rotary key 4 cannot be pulled out regardless of whether the car power switch is turned off or on.

[0046] Example 3, refer to Figure 6 and Figure 7 The difference between this embodiment and the first embodiment is that a locking gap is provided between one side of the rotating key 4 and the groove wall corresponding to the rotating groove 161, and a locking hole 162 communicating with the locking gap is provided on the outer wall of the key protection shell 16, and a lock head 17 which can be inserted into the locking gap to limit the rotation of the rotating key 4 passes through the locking hole 162.

[0047] When the car power switch is in the off state, the owner of the vehicle can pass the lock head 17 through the locking hole 162 into the locking gap and then lock it, and then take away the key on the lock head 17. At this time, the rotary key 4 cannot be turned, and the car power switch cannot be turned on and started, making it difficult for others to start the vehicle without the knowledge of the vehicle owner.

[0048] 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 main power switch for an automobile, characterized in that: include: A switch housing (1) is provided with a mounting cavity (11), and a conductive column (12) is mounted in the mounting cavity (11) and has one end protruding from the mounting cavity (11); A circuit disconnecting assembly (2) comprises a sliding base column (21) installed in the installation cavity (11) and capable of sliding in the installation cavity (11), and a return spring (22) for driving the sliding base column (21) to automatically return to its original position after sliding; A rotating shaft (3) is rotatably mounted inside the switch housing (1) and drives the sliding base column (21) to move in a direction close to the conductive column (12); A rotary key (4) mounted on the switch housing (1) and used for driving the rotating shaft (3) to rotate; An inclined groove (211) is provided on the outer wall of the sliding base column (21); a driving lug (31) inserted into and moving in the inclined groove (211) is provided on a side of the rotating shaft (3) close to the sliding base column (21); a limiting protrusion (212) for limiting the rotating shaft (3) after rotation is provided on the groove wall of the inclined groove (211) close to the sliding base column (21); and the inclined groove (211) is formed with a power-off groove (213) and a power-on groove (214) through the limiting protrusion (212).

2. The main power switch for automobile according to claim 1, characterized in that: The limiting protrusion (212) is provided with an arc transition surface which facilitates the driving lug (31) to move from the power-off groove (213) to the power-on groove (214).

3. The main power switch for automobile according to claim 1, characterized in that: A key insertion hole (151) is provided on a side of the switch housing (1) facing away from the conductive column (12), and a pin shaft (41) is integrally formed on the rotary key (4) and is inserted into the key insertion hole (151) to drive the rotary shaft (3) to rotate.

4. The main power switch for automobile according to claim 3, characterized in that: A first protrusion (42) and a second protrusion (43) are provided on the outer wall of the pin shaft (41); the first protrusion (42) and the second protrusion (43) are circumferentially spaced apart on the pin shaft (41); a radially extending length of the first protrusion (42) along the pin shaft (41) is greater than a radially extending length of the second protrusion (43) along the pin shaft (41); A first slot (152) for inserting the first protrusion (42) and a second slot (153) for inserting the second protrusion (43) are provided on one side of the switch housing (1) where the key insertion hole (151) is provided, and a radial extension length of the second slot (153) along the pin shaft (41) is smaller than a radial extension length of the first protrusion (42) along the pin shaft (41).

5. The main power switch for automobile according to claim 4, characterized in that: The rotating key (4) is provided with a screw for fixing the pin shaft (41) and the rotating shaft (3) together.

6. The main power switch for automobile according to claim 4, characterized in that: A key protection shell (16) is arranged on a side of the switch housing (1) close to the rotary key (4), and a rotation slot (161) for inserting and rotating a portion of the rotary key (4) is provided on a side of the key protection shell (16) away from the conductive column (12).

7. The main power switch for automobile according to claim 6, characterized in that: A locking gap is provided between one side of the rotary key (4) and a groove wall corresponding to the rotation groove (161); a locking hole (162) communicating with the locking gap is provided on the outer wall of the key protection shell (16); a lock head (17) capable of being inserted into the locking gap to limit the rotation of the rotary key (4) passes through the locking hole (162).

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