Switch assembly and working machine

Abstract

The invention relates to the technical field of operation machinery, and discloses a switch assembly and operation machinery. The switch assembly comprises a mounting seat; the starting rotating part is rotationally connected with the mounting seat; the movable contact is arranged on the starting rotating piece; the static contact and the constant electric contact are both arranged on the mounting base and located on the rotating path of the movable contact, and the movable contact can be rotatably connected with or disconnected from the static contact and the constant electric contact; the accelerator rotating part is arranged on the outer side of the starting rotating part in a sleeving manner and is rotationally connected with the mounting seat; and the position detection device is arranged on the mounting base and used for detecting position information of the accelerator rotating piece and transmitting the position information to the control system, so that the control system controls the rotating speed of the engine based on the position information. The switch assembly integrates the functions of engine start-stop control and accelerator control, and in addition, the accelerator rotating piece is arranged on the outer side of the start rotating piece in a sleeving mode, so that the overall structure of the switch assembly is more compact, and the occupied installation area is smaller.

Description

Technical Field

[0001] The present invention relates to the technical field of operating machinery, and in particular to a switch assembly and an operating machinery. Background Art

[0002] To cope with diverse work scenarios, existing work machines, such as excavators, cranes, and loaders, are typically equipped with multiple functions and operating modes. To switch and control these functions and modes, the machines are equipped with a variety of switches. These switches include, but are not limited to, start buttons, stop buttons, and output adjustment buttons.

[0003] Due to the large number of buttons, they will take up a large amount of panel space on the operating machinery, which will not only limit the layout of other functional components, but also easily affect the user's operating experience. Summary of the Invention

[0004] In view of this, the present invention provides a switch assembly and an operating machine to solve or improve the problem of metal debris accumulating between the static contact and the normal power contact, which easily causes abnormal conduction between the static contact and the normal power contact.

[0005] In a first aspect, the present invention provides a switch assembly, comprising:

[0006] Mounting seat;

[0007] A starter rotating member, rotatably connected to the mounting seat;

[0008] A moving contact, provided on the starter rotating member;

[0009] A static contact and a normal power contact, both of which are arranged on the mounting seat and located on the rotation path of the movable contact, and the movable contact can rotate to connect or disconnect the static contact and the normal power contact;

[0010] A throttle rotating member is sleeved on the outer side of the starter rotating member and is rotatably connected to the mounting seat;

[0011] The position detection device is arranged on the mounting seat and is used to detect the position information of the throttle rotating member and transmit the position information to the control system so that the control system controls the speed of the engine based on the position information.

[0012] Beneficial effects: By rotating the starter rotating member, the moving contact can be connected or disconnected with the static contact and the normally-powered contact on the first support member, thereby controlling the start and stop of the engine; and by rotating the throttle rotating member, the position detection device can send position information to the control system, so that the control system can control the engine speed, thereby integrating the switch assembly with the functions of engine start and stop control and throttle control.

[0013] In addition, the throttle rotating member is mounted on the outside of the starter rotating member, making the overall structure of the switch assembly more compact and occupying a smaller installation area.

[0014] In an optional embodiment, the switch assembly further includes a first support member, the first support member is connected to the mounting seat and is provided with a mounting surface, and the mounting surface is provided with a groove;

[0015] The rotation axis of the starter rotating member intersects with the mounting surface, the static contact and the normal power contact are both arranged on the mounting surface, and the groove is provided between the static contact and the normal power contact.

[0016] Beneficial effect: By providing a groove on the first support member and the groove is provided between the static contact and the normal power contact, when metal debris is generated in the switch assembly, at least part of the metal debris between the static contact and the normal power contact will fall into the groove. The groove can prevent the metal debris from forming a conductive path between the static contact and the normal power contact, thereby solving or improving the problem of abnormal conduction between the static contact and the normal power contact caused by the accumulation of metal debris between the static contact and the normal power contact.

[0017] In an optional embodiment, the static contact includes a power-on contact, a start contact, and a close contact that are spaced apart along the circumference of the normal power contact;

[0018] The movable contact is in electrical contact with the normal power contact during rotation and can be selectively connected to the upper power contact, the start contact or the close contact;

[0019] The groove is provided at least between the starting contact and the normal power contact.

[0020] Beneficial effects: By setting a groove between the starting contact and the normally-powered contact, the engine of the operating machine can be prevented from abnormal starting; by setting a groove between the power-on contact and the normally-powered contact, the operating machine can be prevented from abnormal power-on; by setting a groove between the closing contact and the normally-powered contact, the operating machine can be prevented from abnormal shutdown or closing.

[0021] In an optional embodiment, the switch assembly further includes:

[0022] a limiting member disposed on the mounting seat and having a first limiting groove and a second limiting groove distributed along the circumference of the starter rotating member, wherein the two side walls of either the first limiting groove or the second limiting groove are spaced apart from each other along the direction from the groove bottom to the groove opening;

[0023] a first elastic member, disposed on the starter rotating member and in sliding contact with the limiting member;

[0024] Wherein, when the moving contact is in contact with the upper power contact, the first elastic member slides to be opposite to the bottom of the first limiting groove; when the moving contact is in contact with the closing contact, the first elastic member slides to be opposite to the bottom of the second limiting groove; when the moving contact is in contact with the starting contact, the first elastic member slides to be opposite to the side wall of the first limiting groove.

[0025] Beneficial effect: When the moving contact is in contact with the upper power contact, the first elastic member slides to the bottom of the first limit groove and abuts against it. The first limit groove forms a limiting effect on the starter rotating member through the first elastic member, so that the moving contact remains in contact with the upper power contact, avoiding the problem of the moving contact and the upper power contact being separated and causing the power to the operating machine to be cut off.

[0026] Similarly, when the moving contact is in contact with the closing contact, the first elastic member slides to the bottom of the second limit groove and abuts against it. The second limit groove forms a limiting effect on the starting rotating member through the first elastic member, thereby keeping the moving contact in contact with the closing contact, avoiding the problem of abnormal power-on or preheating of the operating machinery caused by the separation of the moving contact and the closing contact.

[0027] In an optional embodiment, a second elastic member is further included, which connects the starter rotating member and the mounting seat. When the moving contact deviates from the closing contact, the second elastic member has a tendency to drive the starter rotating member to rotate so that the moving contact contacts the closing contact.

[0028] Beneficial effect: The second elastic member has a tendency to keep the moving contact in contact with the closing contact, so that the moving contact can be more stably kept in contact with the closing contact, avoiding the problem of the moving contact shifting to contact with other contacts due to vibration and other reasons.

[0029] In an optional embodiment, the starting contact and the upper power contact are adjacent to each other, and the switch assembly further comprises a conductive contact provided on the mounting surface, the conductive contact being connected to the upper power contact and extending between the normal power contact and the starting contact, and when the movable contact is connected to the starting contact, the movable contact is also connected to the conductive contact;

[0030] And / or, the static contact further includes a preheating contact, and the preheating contact, the power-on contact, the start contact and the close contact are arranged at intervals along the circumference of the normal power contact.

[0031] Beneficial effect: After the moving contact contacts the power-on contact, the operating machine is powered on, and the starter rotating part is turned again to rotate the moving contact toward the starting contact. During the rotation of the moving contact, it is always connected to the power-on contact through the conductive contact, so that during the process of starting the engine, the operating machine remains powered on to ensure that the engine can start normally.

[0032] In an optional embodiment, the starter rotating member includes a starter knob and a rotating rod;

[0033] The rotating rod is rotatably connected to the mounting base, the moving contact is provided on the rotating rod, and the starter knob is connected to the rotating rod;

[0034] The starter knob is arranged on a side of the throttle rotating member away from the moving contact, and is used to limit the throttle rotating member in the axial direction of the rotating rod.

[0035] Beneficial Effects: The starter knob is provided so that the driver can operate the starter rotating member through the starter knob. Since the starter knob is arranged on the side of the throttle rotating member away from the first support member, the throttle rotating member can be prevented from being separated from the mounting seat, thereby improving the overall stability of the switch assembly.

[0036] In an optional embodiment, a limiting ring is further included, which is engaged with the surface of the starter knob facing away from the moving contact, and the limiting ring is detachably connected to the throttle rotating member.

[0037] Beneficial effect: By setting the limit ring, on the one hand, the starter knob can be limited to prevent the starter knob from separating from the rotating rod, thereby improving the stability of the switch assembly; on the other hand, the starter knob and the throttle rotating part can be limited to each other in the axial direction, reducing the amount of axial shaking of the starter knob and the throttle rotating part, making the overall stability of the switch assembly higher.

[0038] In an optional embodiment, a third elastic member is further included, wherein the third elastic member is connected to the mounting seat, and the third elastic member is in sliding contact with the throttle rotating member. On the sliding path of the third elastic member, the throttle rotating member is provided with a plurality of slots arranged in sequence, and the third elastic member can be selectively inserted into any of the slots.

[0039] Beneficial effect: After adjusting the throttle rotating member, the third elastic member can be snapped into the corresponding slot. Through the limiting action of the slot and the third elastic member, a limiting effect can be formed on the throttle rotating member to prevent the throttle rotating member from rotating due to vibration.

[0040] In an optional embodiment, the switch assembly further includes a light source module, which is connected to the mounting base. The mounting base is provided with a light-transmitting portion arranged around the starter rotating part. The light source module faces the light-transmitting portion, and the light source module lights up or changes color in response to the position of the starter rotating part.

[0041] Beneficial effect: By arranging a light-transmitting portion on the mounting base and arranging the light source module relative to the light-transmitting portion, when the knob is rotated, the light source module lights up or changes color in response to the rotation position, so that the driver can judge the position of the starter rotating part based on the lighting or color of the light source module, and thus judge the state of the switch assembly, so as to solve the problem that the driver cannot accurately judge the state of the switch assembly and operate the switch assembly in insufficient light.

[0042] In an optional embodiment, the mounting seat is configured as a shell structure, the first support member is arranged inside the mounting seat, one end of the starter rotating member extends into the mounting seat, and the moving contact is arranged at the part of the starter rotating member extending into the mounting seat.

[0043] Beneficial effect: By setting the mounting base as a shell structure, the first support member is set inside the mounting base, and the starter rotating member extends into the interior of the mounting base, so that the moving contact and the static contact are both set inside the mounting base, so that the mounting base protects the moving contact and the static contact, reducing the problem of water vapor causing the moving contact and the static contact to rust.

[0044] In a second aspect, the present invention further provides a working machine comprising a display device, a control system, and the switch assembly as described above;

[0045] The static contact includes a power-on contact and a start contact. The power-on contact, the start contact, the normally-powered contact and the display device are all connected to the control system. When the control system determines that the normally-powered contact and the power-on contact are conductive, the control system controls the display device to turn on and display a password input interface. When the control system determines that the password is correct and the start contact and the normally-powered contact are conductive, the control system controls the engine to start.

[0046] Beneficial effect: The driver can only further control the engine start after entering the correct password through the display device, thereby preventing the operating machinery from being started by illegal personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 This is an exploded view of a switch assembly according to an embodiment of the present invention;

[0049] Figure 2 for Figure 1 Axonometric drawing of the view shown;

[0050] Figure 3 This is a schematic structural diagram of a position limiting member according to an embodiment of the present invention;

[0051] Figure 4 This is an exploded view of the limiter and the starter knob according to an embodiment of the present invention;

[0052] Figure 5 An exploded view of a throttle rotating member and a mounting seat according to an embodiment of the present invention;

[0053] Figure 6 for Figure 5 a left side view of the view shown;

[0054] Figure 7 Schematic diagram of the relative position relationship between the movable contact, the normally-powered contact and the static contact in an embodiment of the present invention;

[0055] Figure 8 This is a schematic diagram showing the principle of connecting a switch assembly and a control system according to an embodiment of the present invention.

[0056] Description of reference numerals:

[0057] 1. Mounting seat; 101. Cylinder; 1011. Translucent part; 102. Base; 103. Locking nut; 2. First supporting member; 201. Static contact; 2011. Power contact; 2012. Start contact; 2013. Close contact; 2014. Preheating contact; 2015. Conductive contact; 202. Normal power contact; 203. Groove; 3. Starter rotating member; 301. Starter knob; 302. Rotating rod; 3021. Mounting column; 4. Moving contact; 5. Limiting member; 501. First limiting groove; 502. Second limiting groove; 503. Mounting flange; 5031. Avoidance hole; 6. Throttle rotating member; 601. Card slot; 602. Shielding part; 7. Position detection device; 8. Limiting ring; 9. Third elastic member; 10. Light source module; 11. Second supporting member. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0059] The following combination Figures 1 to 8 , describing the switch assembly provided in an embodiment of the present invention.

[0060] Specifically, the switch assembly includes a mounting base 1, a starter rotating member 3, a moving contact 4, a static contact 201, a normally-powered contact 202, a throttle rotating member 6, and a position detection device.

[0061] The mounting base 1 is used to be mounted on a working machine. For example, the mounting base 1 can be mounted on a panel of the working machine.

[0062] The starter rotating member 3 is rotatably connected to the mounting base 1 .

[0063] The moving contact 4 is disposed on the starter rotating member 3 so that the moving contact 4 can rotate along with the starter rotating member 3 .

[0064] The static contact 201 and the normal power contact 202 are both mounted on a mounting base and are located in the rotational path of the movable contact 4. The movable contact 4 is used to rotate to connect or disconnect the static contact 201 and the normal power contact 202. That is, the movable contact 4 connects or disconnects the static contact 201 and the normal power contact 202 during rotation.

[0065] It is understood that both the static contact 201 and the normally-powered contact 202 are connected to the control system. When the movable contact 4 rotates to connect the static contact 201 and the normally-powered contact 202, the control system receives a high level signal. When the movable contact 4 rotates to disconnect the static contact 201 and the normally-powered contact 202, the control system receives a low level signal. The control system outputs corresponding control instructions based on the received level signals. For example, the control system may start the engine when it receives a high level signal and shut it down when it receives a low level signal.

[0066] The throttle rotating member 6 is sleeved on the outer side of the starter rotating member 3, and the throttle rotating member 6 is rotatably connected to the mounting base 1. For example, the throttle rotating member 6 is configured as a collar structure.

[0067] The position detection device 7 is provided on the mounting base 1 , and is used to detect the position information of the throttle rotating member 6 and transmit the position information to the control system so that the control system controls the engine speed based on the position information.

[0068] In this embodiment, the mounting base 1 can be connected to the working machine, and the moving contact 4 provided on the starter rotating member 3 rotates with the starter rotating member 3. The static contact 201 and the normal power contact 202 on the first support member 2 can be connected or disconnected through the moving contact 4, so that the control system can output corresponding control instructions to control the start or stop of the engine.

[0069] By providing the throttle rotating member 6 and the position detecting device 7 , the position detecting device 7 can detect the position information of the throttle rotating member 6 , so that the control system can control the engine speed based on the position information.

[0070] With such an arrangement, the switch assembly provided in the embodiment of the present invention can not only control the start and stop of the engine by rotating the starter rotating member 3 so that the moving contact 4 connects or disconnects the static contact 201 and the normally-powered contact 202 on the first support member 2, but can also control the start and stop of the engine by rotating the throttle rotating member 6 so that the position detection device 7 sends position information to the control system so that the control system controls the engine speed, thereby integrating the functions of engine start and stop control and throttle control into the switch assembly.

[0071] In addition, the throttle rotating member 6 is sleeved on the outside of the starter rotating member 3, making the overall structure of the switch assembly more compact and occupying a smaller installation area.

[0072] After long-term use, the start button in the related technology will produce metal chips inside the start button due to wear. The metal chips accumulate between the static contact and the normal electrical contact, which can easily cause abnormal conduction between the static contact and the normal electrical contact, thereby causing abnormal starting of the engine.

[0073] In order to solve or improve the problem of metal debris accumulating between the static contact and the normal power contact, which easily causes abnormal conduction between the static contact and the normal power contact, in some embodiments provided by the present invention, the switch assembly further includes a first support member 2.

[0074] The first support member 2 is connected to the mounting base 1 and has a mounting surface on which a groove 203 is provided. For example, a connecting hole is provided on the first support member 2, and one end of the starter rotating member 3 is inserted into the connecting hole and rotatably engaged with the connecting hole, that is, the starter rotating member 3 can be rotatably connected to the mounting base 1 through the first support member 2.

[0075] The rotation axis of the starter rotating member 3 intersects the mounting surface. Optionally, the rotation axis of the starter rotating member 3 is perpendicular to the mounting surface. Optionally, the moving contact 4 is in sliding contact with the mounting surface so that the moving contact 4 can slide on the mounting surface during the rotation of the starter rotating member 3.

[0076] The static contact 201 and the normal power contact 202 are both arranged on the mounting surface, and the groove 203 is provided between the static contact 201 and the normal power contact 202. Optionally, the first support member 2 can be set as a circuit board, and the static contact 201 and the normal power contact 202 are both integrated on the circuit board.

[0077] In this embodiment, by providing a groove 203 on the first support member 2, and the groove 203 is provided between the static contact 201 and the normal power contact 202, when metal debris is generated in the switch assembly, at least part of the metal debris between the static contact 201 and the normal power contact 202 will fall into the groove 203. The groove 203 can prevent the metal debris from forming a conductive path between the static contact 201 and the normal power contact 202, thereby solving or improving the problem of abnormal conduction between the static contact 201 and the normal power contact 202 caused by the accumulation of metal debris between the static contact 201 and the normal power contact 202.

[0078] In some embodiments provided by the present invention, the groove 203 passes through the first support member 2 .

[0079] In this embodiment, the groove 203 is provided through-hole, and metal chips falling into the groove 203 can leak out of the groove 203, thereby avoiding the problem of metal chips accumulating in the groove 203 and filling up the groove 203. Therefore, there is no need to frequently clean the groove 203, thereby eliminating the need for maintenance of the switch assembly or extending the maintenance cycle of the switch assembly.

[0080] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the present invention, the mounting base 1 is configured as a shell structure, the first support member 2 is arranged inside the mounting base 1, one end of the starter rotating member 3 extends into the mounting base 1, and the moving contact 4 is arranged at the part of the starter rotating member 3 extending into the mounting base 1.

[0081] In this embodiment, by setting the mounting base 1 as a shell structure, the first support member 2 is set inside the mounting base 1, and the starter rotating member 3 extends into the interior of the mounting base 1, so that the moving contact 4 and the static contact 201 are both set inside the mounting base 1, so that the mounting base 1 protects the moving contact 4 and the static contact 201, reducing the problem of water vapor causing the moving contact 4 and the static contact 201 to rust.

[0082] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the present invention, the mounting base 1 includes a cylinder 101 and a base 102 .

[0083] The base 102 is detachably connected to one end of the cylinder 101 and forms a shell structure with the cylinder 101. The first support member 2 is connected to the base 102. The starter rotating member 3 extends into the cylinder 101 from the end of the cylinder 101 away from the base 102 and rotatably penetrates the connecting hole of the first support member 2. Figure 1 and Figure 2 As shown, the throttle rotating member 6 is rotatably extended into the end of the cylinder 101 away from the base 102.

[0084] With such arrangement, the cylinder 101 and the base 102 are detachably connected, so as to facilitate the installation and arrangement of components in the mounting base 1 .

[0085] Optionally, the cylinder 101 and the base 102 may be detachably connected by means of a snap connection, a threaded connection, or a threaded fastener connection.

[0086] refer to Figure 1 and Figure 2 As shown, the mounting base 1 further includes a locking nut 103. A shaft shoulder is provided on the outer circumferential wall of the cylinder 101. The locking nut 103 is sleeved on the outer side of the cylinder 101 and is threadedly connected to the cylinder 101. The distance between the locking nut 103 and the shaft shoulder is adjustable.

[0087] In this embodiment, by setting a locking nut 103 and a shaft shoulder on the mounting base 1, the interior panel of the working machine can be set between the locking nut 103 and the shaft shoulder, and the locking nut 103 is screwed to clamp the interior panel between the locking nut 103 and the shaft shoulder, so as to install the switch assembly on the interior panel of the working machine.

[0088] refer to Figure 2 and Figure 7 As shown, in some embodiments provided by the invention, the static contact 201 includes a power-on contact 2011 , a start contact 2012 , and a close contact 2013 .

[0089] The power-on contact 2011, the start contact 2012, and the close contact 2013 are arranged at intervals along the circumference of the normal power contact 202. The movable contact 4 electrically contacts the normal power contact 202 during rotation of the starter rotating member 3 and can be selectively connected to the power-on contact 2011, the start contact 2012, or the close contact 2013. For example, the power-on contact 2011, the start contact 2012, and the close contact 2013 are all connected to a control system.

[0090] The groove 203 is provided at least between the starting contact 2012 and the normal power contact 202 .

[0091] In this embodiment, the movable contact 4 is always in electrical contact with the normal power contact 202 during the rotation process. When the movable contact 4 is in contact with the power contact 2011, the control system receives the high level of the power contact 2011 and controls the working machine to be powered on.

[0092] When the movable contact 4 is in contact with the start contact 2012, the control system receives the high level of the start contact 2012 and controls the engine of the working machine to start.

[0093] When the movable contact 4 is in contact with the closing contact 2013 , the control system receives the high level of the closing contact 2013 and controls the engine of the working machine to shut down and cut off the power.

[0094] By setting a groove 203 between the starting contact 2012 and the normal power contact 202, abnormal starting of the engine of the working machine can be avoided. By setting a groove 203 between the power-on contact 2011 and the normal power contact 202, abnormal power-on of the working machine can be avoided. By setting a groove 203 between the closing contact 2013 and the normal power contact 202, abnormal shutdown or shutdown of the working machine can be avoided.

[0095] In some embodiments provided by the present invention, the static contact 201 further includes a preheating contact 2014. The preheating contact 2014, the power contact 2011, the start contact 2012 and the close contact 2013 are arranged at intervals along the circumference of the normal power contact 202.

[0096] In this embodiment, when the movable contact 4 is in contact with the preheating contact 2014, the control system receives a high level from the preheating contact 2014 and controls the preheating of the working machine. Preheating the working machine increases the temperature of at least one of the engine oil, coolant, and hydraulic system, thereby ensuring smooth startup and normal operation of the working machine in cold weather. The provision of a groove between the preheating contact and the normally powered contact prevents the preheating function from activating abnormally.

[0097] refer to Figure 7 As shown, in some embodiments provided by the present invention, the preheating contact 2014, the closing contact 2013, the power-on contact 2011 and the start contact 2012 are arranged in sequence in a clockwise direction.

[0098] In this embodiment, by arranging the closing contact 2013 between the preheating contact 2014 and the power contact 2011 , when controlling the preheating of the working machine, the moving contact 4 will not pass through the power contact 2011 , and thus the working machine will not be powered on.

[0099] When controlling the power-on of the operating machine, the moving contact 4 will not pass through the preheating contact 2014, so the operating machine will not be preheated, so that the power-on state and the preheating state of the operating machine are independent of each other and will not interfere with each other.

[0100] In addition, the starting contact 2012 is adjacent to the power contact 2011, and the moving contact 4 is in contact with the power contact 2011, so that after the operating machine is powered on, the starter rotating part 3 can be conveniently and quickly operated to make the moving contact 4 contact with the starting contact 2012 to control the start of the engine.

[0101] refer to Figure 3 and Figure 4 As shown, in some embodiments provided by the present invention, the switch assembly further includes a limiting member 5 and a first elastic member.

[0102] The limiting member 5 is disposed on the mounting base 1 and is provided with a first limiting groove 501 and a second limiting groove 502 distributed along the circumference of the starter rotating member 3. Furthermore, along the direction from the bottom of the groove to the slot opening, the two side walls of either the first limiting groove 501 or the second limiting groove 502 are spaced apart from each other. That is, along the direction from the bottom of the groove to the slot opening, the two side walls of the first limiting groove 501 are spaced apart from each other, and along the direction from the bottom of the groove to the slot opening, the two side walls of the first limiting groove 501 are spaced apart from each other.

[0103] The first elastic member is disposed on the starter rotating member 3 and is in sliding contact with the limiting member 5 . The sliding path of the first elastic member includes a first limiting groove 501 and a second limiting groove 502 .

[0104] When the movable contact 4 is in contact with the power-on contact 2011, the first elastic member slides until it faces the bottom of the first limiting groove 501. When the movable contact 4 is in contact with the closing contact 2013, the first elastic member slides until it faces the bottom of the second limiting groove 502. When the movable contact 4 is in contact with the start contact 2012, the first elastic member slides until it abuts against the sidewall of the first limiting groove 501.

[0105] In this embodiment, when the moving contact 4 is in contact with the upper power contact 2011, the first elastic member slides to the bottom of the first limiting groove 501, and the side wall of the first limiting groove 501 forms a limiting effect on the starter rotating member 3 through the first elastic member, so that the moving contact 4 remains in contact with the upper power contact 2011, avoiding the problem of the moving contact 4 being separated from the upper power contact 2011 and causing the power to the operating machine to be cut off.

[0106] Similarly, when the moving contact 4 is in contact with the closing contact 2013, the first elastic member slides to the bottom of the second limiting groove 502, and the side wall of the second limiting groove 502 forms a limiting effect on the starting rotating member 3 through the first elastic member, so that the moving contact 4 remains in contact with the closing contact 2013, avoiding the problem of abnormal power-on or preheating of the operating machinery caused by the separation of the moving contact 4 and the closing contact 2013.

[0107] Finally, when the moving contact 4 is in contact with the starting contact 2012, the first elastic member abuts against the side wall of the first limiting groove 501. Since the side wall of the first limiting groove 501 is inclined, the first elastic member stretches and slides along the side wall of the first limiting groove 501 to be opposite to the bottom of the first limiting groove 501. During the stretching process, the first elastic member drives the starter rotating member 3 to rotate, and causes the moving contact 4 to disengage from the starting contact 2012 and re-contact the power-on contact 2011, thereby avoiding the problem of generating a start command for a normally operating engine again.

[0108] Optionally, when the movable contact 4 is in contact with the preheating contact 2014, the first elastic member slides until it abuts against the sidewall of the second limiting groove 502. Because the sidewalls of the second limiting groove 502 are inclined, the first elastic member extends and slides along the sidewalls of the second limiting groove 502 until it faces the bottom of the second limiting groove 502. During the extension of the first elastic member, the starter rotating member 3 is driven to rotate, causing the movable contact 4 to disengage from the preheating contact 2014 and re-engage with the closing contact 2013, thereby preventing the preheating time from being too long.

[0109] refer to Figure 3 As shown, in some embodiments provided by the present invention, the limiting member 5 includes a sleeve structure, and the first limiting groove 501 and the second limiting groove 502 are both provided on the end surface of the sleeve structure. By providing the first limiting groove 501 and the second limiting groove 502 on the end surface of the sleeve structure, the first elastic member can be arranged along the axial direction of the starter rotating member 3, thereby reducing the radial dimension of the switch assembly.

[0110] In some embodiments provided by the present invention, the first elastic member is configured as a spring, that is, one end of the spring is connected to the starter rotating member 3, and the other end is in sliding contact with the limiting member 5.

[0111] refer to Figure 3 As shown, in some embodiments provided by the present invention, the first limiting groove 501 and the second limiting groove 502 constitute a limiting groove group, the number of the limiting groove groups is set to at least two, at least two limiting groove groups are arranged in sequence along the circumference of the limiting member 5, and the first elastic member corresponds one-to-one to the limiting groove group.

[0112] With such arrangement, on the one hand, the starter rotating part 3 can be driven to rotate by at least two first elastic parts, which has better limiting and resetting effects. On the other hand, the force on the starter rotating part 3 can be balanced, avoiding the problem of the starter rotating part getting stuck.

[0113] In some embodiments of the present invention, the switch assembly further includes a second elastic member connecting the starter rotating member 3 and the mounting base 1. When the movable contact 4 is offset from the closing contact 2013, the second elastic member has a tendency to drive the starter rotating member 3 to rotate, causing the movable contact 4 to contact the closing contact 2013.

[0114] In this embodiment, the second elastic member has a tendency to keep the moving contact 4 in contact with the closing contact 2013, so that the moving contact 4 can more stably maintain a state of contact with the closing contact 2013, avoiding the problem of the moving contact 4 shifting due to vibration and other reasons and contacting other contacts.

[0115] Optionally, the second elastic member is configured as a torsion spring, which can be sleeved on the outside of the starter rotating member 3 , and one end of the torsion spring is connected to the mounting seat 1 , and the other end is connected to the starter rotating member 3 .

[0116] refer to Figure 2 and Figure 7 As shown, in some embodiments provided by the present invention, the start contact 2012 and the upper power contact are adjacent to each other. The switch assembly also includes a conductive contact 2015 provided on the mounting surface. The conductive contact 2015 is connected to the upper power contact 2011 and extends between the normal power contact 202 and the start contact 2012. When the movable contact 4 is connected to the start contact 2012, the movable contact 4 is also connected to the conductive contact 2015.

[0117] In this embodiment, after the moving contact 4 contacts the power-on contact 2011, the operating machine is powered on, and the starter rotating part 3 is rotated again to rotate the moving contact 4 toward the starting contact 2012. During the rotation of the moving contact 4, it is always connected to the power-on contact 2011 through the conductive contact 2015, so that during the process of starting the engine, the operating machine remains powered on to ensure that the engine can start normally.

[0118] refer to Figure 1 、 Figure 4 and Figure 5 As shown, in some embodiments provided herein, the position detection device 7 includes two photoelectric sensors, and the throttle rotating member 6 is provided with a plurality of shielding portions 602, which are sequentially spaced apart along the circumference of the throttle rotating member 6. The two photoelectric sensors are arranged along the movement path of the shielding portions 602 so that the shielding portions 602 can pass through each of the photoelectric sensors.

[0119] Optionally, assuming that the two sides of the shielding portion 602 are respectively the first sides, when the throttle rotating member 6 is in the initial position, one photoelectric sensor is opposite to the first side of the corresponding shielding portion 602, and the other photoelectric sensor is opposite to the second side of the corresponding shielding portion 602, so that the signals of the two photoelectric sensors have a phase difference, so as to distinguish the rotation direction of the throttle rotating member 6 based on the phase difference.

[0120] In this embodiment, as the throttle rotor 6 rotates, the blocking portion 602 periodically blocks the photosensor. The position of the throttle rotor 6 is calculated based on the number of times the blocking portion 602 passes the photosensor. By providing at least two photosensors, the rotational direction of the throttle rotor 6 can be determined based on the phase difference between the two photosensors. This allows the engine speed to be controlled accordingly.

[0121] For example, when the throttle rotating member 6 rotates clockwise, the engine speed increases, and when the throttle rotating member 6 rotates counterclockwise, the engine speed decreases.

[0122] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the present invention, the starter rotating member 3 includes a starter knob 301 and a rotating rod 302 .

[0123] The rotating rod 302 is rotatably connected to the mounting base 1, for example, by a first support member. The movable contact 4 is disposed on the rotating rod 302. The starter knob 301 is connected to the rotating rod 302, for example, by being clipped, bonded, or threaded.

[0124] The starter knob 301 is provided on a side of the throttle rotating member 6 facing away from the first support member 2 , and is used to limit the throttle rotating member 6 in the axial direction of the rotating rod 302 .

[0125] In this embodiment, a starter knob 301 is provided to facilitate the driver's operation of the starter rotating member 3. Since the starter knob 301 is located on the side of the throttle rotating member 6 facing away from the first support member 2, the throttle rotating member 6 can be prevented from separating from the mounting base 1, thereby improving the overall stability of the switch assembly.

[0126] Optionally, a countersunk hole is provided at one end of the throttle rotating member 6 facing away from the barrel 101, and at least a portion of the starter knob 301 is disposed within the countersunk hole, with the starter knob 301 engaging with the bottom of the countersunk hole. One end of the rotating rod 302 is connected to the starter knob 301, and the other end is rotatably connected to the connecting hole of the first support member 2.

[0127] Optionally, a seal is provided between the throttle rotating member 6 and the barrel 101 to improve the sealing effect between the throttle rotating member 6 and the barrel 101 and prevent dust or water vapor from entering the barrel 101 through the gap between the throttle rotating member 6 and the barrel 101.

[0128] refer to Figure 4 As shown, optionally, a mounting column 3021 is provided on the start knob 301 , and the first elastic member can be provided in the mounting column 3021 .

[0129] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by the present invention, the switch assembly further includes a limit ring 8, which is engaged with the surface of the starter knob 301 facing away from the throttle rotating member 6, and the limit ring 8 is detachably connected to the throttle rotating member 6.

[0130] In this embodiment, by providing a limit ring 8, on the one hand, the start knob 301 can be limited to prevent the start knob 301 from being separated from the rotating rod 302, thereby improving the stability of the switch assembly; on the other hand, the start knob 301 and the throttle rotating member 6 can be limited to each other in the axial direction, thereby reducing the amount of shaking of the start knob 301 and the throttle rotating member 6 in the axial direction, making the overall stability of the switch assembly higher.

[0131] Optionally, an annular groove is provided on the inner wall of the countersunk hole of the throttle rotating member 6, and a clamping portion is provided on the limiting ring 8, which is clamped into the annular groove and can slide along the annular groove, so that the limiting ring 8 can be connected to the throttle rotating member 6 and can rotate relative to the throttle rotating member 6, thereby reducing the obstruction of the limiting ring 8 on the throttle rotating member 6 or the starter knob 301.

[0132] Optionally, the limiting ring 8 includes a ring body and an annular protrusion, at least part of the ring body extends between the countersunk hole and the starter knob 301, and the inner wall of the port of the ring body facing away from the mounting seat 1 is provided with the annular protrusion, and the annular protrusion is limitedly matched with the surface of the starter knob 301 facing away from the throttle rotating part 6.

[0133] In this embodiment, by at least partially extending the ring body between the countersunk hole and the starter knob 301, on the one hand, it can provide support for the starter knob 301, making the overall rigidity of the starter knob 301 higher, and avoiding the problem of the starter knob 301 swinging or shaking; on the other hand, the ring body can improve the sealing effect between the starter knob 301 and the countersunk hole, and prevent impurities or water vapor from entering the cylinder 101 through the gap between the starter knob 301 and the countersunk hole.

[0134] refer to Figure 5 and Figure 6 As shown, in some embodiments provided by the present invention, the switch assembly further includes a third elastic member 9.

[0135] The third elastic member 9 is connected to the mounting base 1 and is in sliding contact with the throttle rotating member 6. In the sliding path of the third elastic member 9, the throttle rotating member 6 is provided with a plurality of slots 601 arranged in sequence, and the third elastic member 9 can be selectively inserted into any of the slots 601.

[0136] In this embodiment, after adjusting the throttle rotating member 6, the third elastic member 9 can be snapped into the corresponding slot 601. Through the limiting action of the slot 601 and the third elastic member 9, a limiting effect can be formed on the throttle rotating member 6 to prevent the throttle rotating member 6 from rotating due to vibration.

[0137] Optionally, the third elastic member 9 may be configured as a spring or a spring plunger.

[0138] Optionally, the limiting member 5 is arranged inside the throttle rotating member 6 , the locking groove 601 is arranged on the outer circumferential wall of the throttle rotating member 6 , and the third elastic member 9 is arranged outside the throttle rotating member 6 .

[0139] Such arrangement enables the limit member 5 and the first elastic member to be located inside the throttle rotating member 6, and the third elastic member 9 to be located outside the throttle rotating member 6. The third elastic member 9 will not interfere with the first elastic member and the limit member 5. In addition, the first elastic member is arranged along the axial direction of the throttle rotating member 6, and the third elastic member 9 is arranged along the radial direction of the throttle rotating member 6, so that the internal space of the mounting seat 1 can be fully utilized.

[0140] In some embodiments provided by the present invention, the switch assembly further includes a light source module 10 .

[0141] The light source module 10 is connected to the mounting base 1. The mounting base 1 is provided with a light-transmitting portion 1011 arranged around the starter rotating member 3. The light source module 10 faces the light-transmitting portion 1011 and turns on or off or changes color in response to the position of the starter rotating member 3.

[0142] In this embodiment, a light-transmitting portion 1011 is provided on the mounting base 1, and the light source module 10 is provided opposite to the light-transmitting portion 1011. During the process of rotating the knob, the light source module 10 lights up or changes color in response to the rotation position, so that the driver can judge the position of the starter rotating part 3 based on the lighting or color of the light source module 10, thereby judging the state of the switch assembly, thereby solving the problem that the driver cannot accurately judge the state of the switch assembly and operate the switch assembly in insufficient light.

[0143] Optionally, the power-on contact 2011, the start contact 2012, the close contact 2013 and the preheating contact 2014 all have corresponding light source modules 10, and each light source module 10 can be independently turned on and off or changed color. When the starting rotating part 3 rotates to the moving contact 4 and contacts any one of the power-on contact 2011, the start contact 2012, the close contact 2013 and the preheating contact 2014, the light source module 10 corresponding to the power-on contact 2011, the start contact 2012, the close contact 2013 or the preheating contact 2014 lights up or changes color.

[0144] Optionally, the light-transmitting portion 1011 is provided on the end face of the barrel 101 away from the base 102, and the light source module 10 is provided inside the barrel 101. This arrangement can protect the light source module 10 through the barrel 101 and prevent light leakage from the light source module 10 to cause light pollution.

[0145] In some embodiments provided by the present invention, the switch assembly further includes a second support member 11. The second support member 11 can be configured as a circuit board.

[0146] The second support member 11 is connected to the mounting base 1, for example, by a threaded fastener. The second support member 11 and the movable contact 4 are located on the same side of the first support member 2. The second support member 11 has a through hole for the starter rotating member 3 to pass through. For example, the rotating rod 302 of the starter rotating member 3 passes through the through hole. The rotating rod 302 can also rotate or axially limit the second support member 11. The light source module 10 is located on the surface of the second support member 11 facing away from the first support member 2.

[0147] refer to Figure 1 As shown, in some embodiments provided by the present invention, the position detection device 7 and the light source module 10 are both arranged on the second support member 11 to improve the integration level of the second support member 11 and improve the compactness of the switch assembly.

[0148] refer to Figure 1-Figure 3 As shown, in some embodiments provided by the present invention, the stopper 5 includes a mounting flange 503, which is connected to the end of the sleeve structure facing the first support member. The mounting flange 503 is connected to the cylinder 101 via threaded fasteners. The mounting flange 503 is located on the side of the second support member 11 facing away from the first support member 2. The mounting flange 503 is provided with an avoidance hole 5031. The avoidance hole 5031 includes a first through hole for avoiding the light source module 10 and a second through hole for avoiding the photoelectric sensor.

[0149] In this embodiment, by providing the mounting flange 503 , the limiting member 5 can be mounted on the mounting base 1 . On the other hand, the shielding effect of the mounting flange 503 can reduce or prevent the light from the light source module 10 from affecting the photoelectric sensor.

[0150] An embodiment of the present invention further provides a working machine.

[0151] Specifically, the working machine includes a display device, a control system, and the switch assembly described above.

[0152] refer to Figure 8As shown, static contact 201 includes a power-on contact 2011 and a start contact 2012. Power-on contact 2011, start contact 2012, constant-power contact 202, and display device are all connected to a control system. When the control system determines that constant-power contact 202 and power-on contact 2011 are conductive, it controls the display device to power on and display a password input interface, allowing the driver to enter a password through the display device. The display device transmits the password to the control system. When the control system determines that the password is correct and that start contact 2012 is conductively connected to constant-power contact 202, it controls the engine to start.

[0153] In this embodiment, since the working machine does not require a key to start, to enhance the safety of the working machine and prevent unauthorized persons from starting the working machine, after the driver rotates the starter rotary member 3, causing the movable contact 4 to connect with the energized contact 2011 and the normally energized contact 202, the energized contact 2011 transmits a high level to the control system. The control system then powers on the working machine and turns on the display device, displaying a password input interface. After the driver enters the correct password through the display device and rotates the starter rotary member 3, causing the movable contact 4 to connect with the start contact 2012 and the normally energized contact 202, the control system starts the engine based on the correct password and the high level of the start contact 2012.

[0154] This arrangement allows the driver to enter the correct password through the display device before further controlling the engine start, thereby preventing the operating machinery from being started by illegal personnel.

[0155] Optionally, the display device may be a touch screen.

[0156] In some embodiments provided herein, the power-on contact 2011, the start contact 2012, the close contact 2013, the normal power contact 202, the preheating contact 2014, the position detection device 7, and the light source module 10 are all connected to a control system. Optionally, a communication module is provided on the base 102 of the mounting base 1, and the power-on contact 2011, the start contact 2012, the close contact 2013, the normal power contact 202, the preheating contact 2014, the position detection device 7, and the light source module 10 are all connected to the control system via the communication module. For example, the communication module can be a wireless module or a wired module.

[0157] Optionally, the working machine includes, but is not limited to, an excavator, a loader, a crane, and a roller.

[0158] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A switch assembly, characterized in that: include: Mounting seat (1); A starter rotating member (3) is rotatably connected to the mounting seat (1); A moving contact (4) is provided on the starter rotating member (3); A stationary contact (201) and a normal electric contact (202), both of which are arranged on the mounting seat and located on the rotation path of the moving contact (4), and the moving contact (4) can be rotated to connect or disconnect the stationary contact (201) and the normal electric contact (202); A throttle rotating member (6) is sleeved on the outer side of the starter rotating member (3) and is rotatably connected to the mounting seat (1); A position detection device (7) is arranged on the mounting seat (1) and is used to detect the position information of the throttle rotating member (6) and transmit the position information to the control system so that the control system controls the rotation speed of the engine based on the position information.

2. The switch assembly according to claim 1, characterized in that: The switch assembly further comprises a first support member (2), the first support member (2) being connected to the mounting seat (1) and provided with a mounting surface, the mounting surface being provided with a groove (203); The rotation axis of the starter rotating part (3) intersects with the mounting surface, the static contact (201) and the normal power contact (202) are both arranged on the mounting surface, and the groove (203) is arranged between the static contact (201) and the normal power contact (202).

3. The switch assembly according to claim 2, characterized in that: The static contact (201) comprises an upper power contact (2011), a start contact (2012) and a close contact (2013) which are arranged at intervals along the circumference of the normal power contact (202); The movable contact (4) is in electrical contact with the normal power contact (202) during the rotation process, and can be selectively connected to the upper power contact (2011), the start contact (2012) or the close contact (2013); The groove (203) is provided at least between the starting contact (2012) and the normal power contact (202).

4. The switch assembly according to claim 3, characterized in that: The switch assembly also includes: A limiting member (5) is arranged on the mounting seat (1) and is provided with a first limiting groove (501) and a second limiting groove (502) distributed along the circumference of the starter rotating member (3), and along the direction from the groove bottom to the groove mouth, the two side walls of either the first limiting groove (501) or the second limiting groove (502) are away from each other; A first elastic member, disposed on the starter rotating member (3) and in sliding contact with the limiting member (5); Wherein, when the moving contact (4) is in contact with the upper power contact (2011), the first elastic member slides to be opposite to the bottom of the first limiting groove (501); when the moving contact (4) is in contact with the closing contact (2013), the first elastic member slides to be opposite to the bottom of the second limiting groove (502); when the moving contact (4) is in contact with the starting contact (2012), the first elastic member slides to be opposite to the side wall of the first limiting groove (501).

5. The switch assembly according to claim 4, characterized in that: The invention also comprises a second elastic member, wherein the second elastic member connects the starter rotating member (3) and the mounting seat (1), and when the moving contact (4) deviates from the closing contact (2013), the second elastic member has a tendency to drive the starter rotating member (3) to rotate so that the moving contact (4) contacts the closing contact (2013).

6. The switch assembly according to claim 3, characterized in that: The starting contact (2012) and the upper electrical contact are adjacent to each other, the switch assembly further comprising a conductive contact (2015) provided on the mounting surface, the conductive contact (2015) being connected to the upper electrical contact (2011), and the conductive contact (2015) extending between the normal electrical contact (202) and the starting contact (2012), and when the moving contact (4) is connected to the starting contact (2012), the moving contact (4) is also connected to the conductive contact (2015); And / or, the static contact (201) further includes a preheating contact (2014), and the preheating contact (2014), the upper power contact (2011), the start contact (2012) and the closing contact (2013) are arranged at intervals along the circumference of the normal power contact (202).

7. The switch assembly according to any one of claims 1 to 6, characterized in that: The starter rotating member (3) comprises a starter knob (301) and a rotating rod (302); The rotating rod (302) is rotatably connected to the mounting seat (1), the moving contact (4) is arranged on the rotating rod (302), and the starter knob (301) is connected to the rotating rod (302); The starter knob (301) is arranged on a side of the throttle rotating member (6) away from the moving contact (4), and is used to limit the position of the throttle rotating member (6) in the axial direction of the rotating rod (302).

8. The switch assembly according to any one of claims 1 to 6, characterized in that: It also includes a limiting ring (8), which is in limiting cooperation with a surface of the starter rotating member (3) away from the moving contact (4), and the limiting ring (8) is detachably connected to the throttle rotating member (6).

9. The switch assembly according to any one of claims 1 to 6, characterized in that: The invention also comprises a third elastic member (9), wherein the third elastic member (9) is connected to the mounting seat (1), and the third elastic member (9) is in sliding contact with the throttle rotating member (6). On the sliding path of the third elastic member (9), the throttle rotating member (6) is provided with a plurality of slots (601) arranged in sequence, and the third elastic member (9) can be selectively inserted into any of the slots (601).

10. The switch assembly according to any one of claims 1 to 6, characterized in that: The switch assembly further comprises a light source module (10), wherein the light source module (10) is connected to the mounting seat (1), and the mounting seat (1) is provided with a light-transmitting portion (1011) arranged around the starter rotating member (3), and the light source module (10) faces the light-transmitting portion (1011), and the light source module (10) lights up or changes color in response to the position of the starter rotating member (3).

11. The switch assembly according to any one of claims 1 to 5, characterized in that: The mounting seat (1) is configured as a shell structure, one end of the starter rotating member (3) extends into the mounting seat (1), and the moving contact (4) is disposed at the portion of the starter rotating member (3) extending into the mounting seat (1).

12. A working machine, characterized in that: Comprising a display device, a control system and a switch assembly as claimed in any one of claims 1 to 11; The static contact (201) comprises an upper power contact (2011) and a start contact (2012), and the upper power contact (2011), the start contact (2012), the normal power contact (202) and the display device are all connected to the control system; When the control system determines that the normal power contact (202) and the upper power contact (2011) are conductive, the control system controls the display device to start up and display a password input interface, and when the control system determines that the password is correct and the start contact (2012) and the normal power contact (202) are conductive, the control system controls the engine to start.

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