Ignition switch of engineering machinery

Abstract

The utility model relates to an engineering machinery ignition switch which comprises a lock body, a lock cylinder, a lock cylinder installation cavity, a blade groove, a blade and a clamping groove, the end portion of the lock cylinder is in linkage with a driving piece, the driving piece comprises a round rotating body and a strip-shaped connecting block which are integrally formed, the lock body is provided with a limiting groove, a plurality of sets of grooves are formed in the inner circumference of the rotating groove, and the round rotating body is provided with a through hole. A spring and a limiting block are arranged in the through hole; a cover plate is detachably connected to the end of the lock body, a plurality of sets of first component connecting holes are formed in the cover plate, and a plurality of sets of second component connecting holes are formed in the strip-shaped connecting block. The utility model provides an ignition switch for engineering machinery, which allows an automobile to be smoothly ignited after a key is inserted and correctly rotated, and under a specific limiting gear state, even if a hand is loosened, a lock cylinder is fixed due to the interaction of a limiting block and a groove, so that accidental rotation is prevented, the automobile is kept not flameout, but the key cannot be pulled out, and the safety performance is higher.

Description

Technical Field

[0001] The utility model specifically relates to an ignition switch for construction machinery. Background Art

[0002] An automobile ignition switch is used to control the ignition of an automobile. The Chinese utility model patent document with the publication number of "CN201514881U" discloses an ignition switch lock core for construction machinery, which mainly includes a lock body, a lock core and a lever-type lock hook. The lock hook is hinged to the lock body through a rotation fulcrum and presses a return spring at one end. An active cushion block for pushing the lock hook to rotate is arranged in the lock core. A transmission block meshing with the active cushion block is sleeved at one end of the lock hook, and the transmission block can slide up and down in the limit groove of the lock body. To reduce friction, the transmission block is horizontally arranged and meshes with the active cushion block, and the meshing surface adopts an arc surface. By driving the lock core to rotate with a key, it can be clearly seen from the attached drawings of the specification of this published document Figures 2 to 3 that a convex block is arranged at the lower end of the lock core, which will squeeze the active cushion block when rotated to a certain angle, thereby driving the lock hook to reciprocate to achieve ignition or locking.

[0003] The above automobile ignition switch lock core has the following defects:

[0004] This automobile ignition lock core only has an ignition gear and a flameout gear. When the vehicle needs to stay for a short time, the key either rotates with the lock core to the ignition gear, at this time the key cannot be pulled out and the vehicle remains in the ignition state; the key either rotates with the lock core to the flameout gear, at this time the key can be pulled out, but the vehicle remains in the flameout state, and the key needs to be inserted again for ignition operation when starting again. Therefore, this automobile ignition lock core has a single function and is not very practical. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an ignition switch for construction machinery aiming at the deficiencies of the above-mentioned prior art, which allows the vehicle to start smoothly after the key is inserted and rotated correctly. In a specific limit gear state, even if the hand is released, the lock core is fixed due to the interaction between the limit block and the groove, preventing accidental rotation, while keeping the vehicle running but the key cannot be pulled out, with relatively high safety performance.

[0006] To achieve the above object, the utility model provides the following technical solution: a construction machinery ignition switch, comprising a lock body and a lock core. A lock core installation cavity is provided inside the lock body, and the lock core is rotatably installed in the lock core installation cavity. A blade groove is provided on the lock core, and blades matching the key are provided in the blade groove. A clamping groove cooperating with the blade is provided in the lock core installation cavity, and a driving member is linked to the end of the lock core. It is characterized in that: the driving member comprises a circular rotating body and a strip-shaped connecting block which are integrally formed. The circular rotating body is detachably connected to the lock core. The end face of the circular rotating body away from the lock core is fixedly connected to the lower end of the strip-shaped connecting block. The lock body is provided with a rotating groove sleeved on the outer periphery of the circular rotating body. A plurality of groups of grooves evenly distributed at intervals are provided on the inner periphery of the rotating groove. The grooves are recessed toward one side of the inner wall of the rotating groove. The circular rotating body is provided with a through hole arranged along a direction perpendicular to the central axis of the rotating groove. A spring is provided in the through hole. One end of the spring is inserted into the bottom of the through hole, and the other end is connected with a limiting block. The end of the limiting block connected to the spring is in a rectangular shape, and the other end of the limiting block is provided with an arc surface. A cover plate is detachably connected to the end of the lock body. A plurality of groups of first component connection holes are provided on the cover plate, and a plurality of groups of second component connection holes are also provided on the end face of the strip-shaped connecting block facing the cover plate.

[0007] Adopting the above technical solution significantly improves the practicability and safety of the vehicle ignition switch. When the key is inserted and rotated clockwise until the ignition gear, the ignition is successful. When the lock core is rotated counterclockwise to the limit gear (the spring, the limiting block and a plurality of groups of grooves are designed, and at this time the limiting block will be stuck in a group of grooves), the vehicle is in a non-shutdown state. At the same time, since the blade is not aligned with the blade groove, the key cannot be pulled out. After the hand is released, the lock core is limited due to the clamping relationship between the limiting block and the groove and will not rotate randomly, which has high safety. Continuing to rotate the lock body counterclockwise until it returns to the shutdown gear, the blade corresponds to the blade groove and the key can be pulled out. This design allows the vehicle to enter the ignition state after the key is inserted and rotated, and keeps the vehicle in a non-shutdown state without allowing the key to be pulled out when rotated counterclockwise to the limit gear, solving the problems of single function and poor practicability of the existing ignition lock core. It not only ensures the safety of use but also improves the convenience of operation, enabling the driver to choose to keep the vehicle ignited, or in the limit gear state or the shutdown state according to needs, solving the contradictory demands during short-term stops. Among them, the limiting block is designed with a "rectangular body and an arc surface", which can not only meet the clamping and matching relationship between the limiting block and the groove, but also will not randomly change its position due to external forces. When hanging in the limit gear, the lock core has high working reliability. Further, "there are a plurality of groups of first component connection holes on the cover plate and a plurality of groups of second component connection holes on the strip-shaped connecting block". When the lock core drives the driving member to rotate, when switching among the shutdown gear, the limit gear and the ignition gear, the conductive components installed in the second component connection holes will selectively connect with the conductive components of the first component connection holes to realize the gear change.

[0008] In this design, the lock body serves as an outer shell to protect the internal components, and the lock core installation cavity provides a rotatable environment for the lock core. The blade slots on the lock core are internally provided with blades matching the key, which are used in combination with the card slots to enhance the anti-theft performance. When the key is correctly inserted and rotated, the linkage driving components of the lock core, including the circular rotating body and the strip-shaped connecting block, rotate accordingly. The circular rotating body is detachably connected to the lock core, facilitating maintenance or replacement, while the strip-shaped connecting block is used to transmit mechanical motion to other parts of the ignition system.

[0009] As a further solution of the present utility model: the circular rotating body is provided with two groups of insertion slots symmetrically distributed up and down, and the end of the lock core is provided with a group of insertion blocks adapted to the insertion slots corresponding to each group of insertion slots. Each group of insertion slots is provided with an arc surface at one end close to the center of the circular rotating body, and the circular rotating body is also provided with weight-reducing holes distributed at both ends of the insertion slots.

[0010] Adopting the above technical solution, the insertion slots cooperate with the insertion blocks to realize the connection between the lock core and the circular rotating body, and the disassembly and assembly between the lock core and the circular rotating body are extremely convenient, and the insertion blocks can be inserted or pulled out. The arc surface is designed to improve the smoothness of the insertion or extraction of the insertion block into or out of the insertion slot. The weight-reducing holes are designed to reduce the overall weight, which conforms to the development concept of automotive lightweighting.

[0011] As a further solution of the present utility model: the strip-shaped connecting block is provided with a sliding block on the end face of the lock core, and the lock body is provided with a fan-shaped sliding groove distributed on the outer periphery of the rotating groove, and the sliding block is inserted into the fan-shaped sliding groove; the strip-shaped connecting block is also provided with a rotation positioning column coaxially arranged with the circular rotating body on the end face facing the cover plate, and the cover plate is provided with a positioning hole corresponding to the rotation positioning column, and the end of the rotation positioning column is inserted into the positioning hole.

[0012] Adopting the above technical solution, the sliding block can only reciprocate in the fan-shaped sliding groove, and the maximum rotation angle of the strip-shaped connecting block is limited to prevent the lock core from rotating excessively. The rotation positioning column and the positioning hole are designed to make the driving component always rotate around the center of the positioning hole, improving the stable coaxial rotation of the circular rotating body and the lock core, preventing the driving component from shaking, and making the positional relationship more stable.

[0013] As a further solution of the present utility model: the end of the lock body is provided with a circular insertion table with a hollow interior, the fan-shaped sliding groove and the rotating groove are both distributed in the circular insertion table, the cover plate is provided with a connecting flange round edge sleeved on the outer periphery of the circular insertion table, the outer periphery of the circular insertion table is provided with a group of positioning strips and several groups of spaced-apart clamping blocks, the positioning strips and the clamping blocks both protrude towards the outside of the circular insertion table, the connecting flange round edge is provided with positioning strip-shaped holes adapted to the positioning strips, and the connecting flange round edge is provided with a group of card holes corresponding to each group of clamping blocks.

[0014] Adopt the above technical solution, align the positioning strip with the positioning strip-shaped hole (to assist in the assembly and positioning of the cover plate and the lock body), and then insert the circular plugging platform into the fan-shaped sliding groove until the clamping block slides into the clamping hole to realize the connection between the cover plate and the lock body.

[0015] As a further solution of the present utility model: A connection nut is sleeved on the outer periphery of one end of the lock body away from the cover plate. The lock body is provided with a threaded section corresponding to the connection nut. The lock body is further provided with bumps distributed at the end of the threaded section. A magnet is installed in the bump. The lock body is further provided with an annular flange baffle distributed at one end of the bump. The annular flange baffle is connected with a reinforcing rib at the end face away from the bump.

[0016] Adopt the above technical solution, design the threaded section and the connection nut to install the lock body on the vehicle body. Further add bumps to avoid the phenomenon of thread slipping caused by excessive rotation of the connection nut. Set a magnet in the bump, and the magnet generates a suction force on the connection nut, which can avoid the phenomenon of the connection nut loosening. Further add an annular flange baffle and a reinforcing rib to enhance the structural strength of the lock body and extend its service life.

[0017] The following further elaborates on the present utility model in conjunction with the drawings and embodiments. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present utility model;

[0019] Figure 2 It is an exploded view of the embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the driving member of the embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the lock core of the embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the lock body of the embodiment of the present utility model.

[0023] Label annotation: Lock body 1, lock core 2, lock core installation cavity 3, annular flange baffle 4, reinforcing rib 5, card slot 6, driving member 7, circular rotating body 8, strip-shaped connecting block 9, rotating slot 10, groove 11, through hole 12, spring 13, limiting block 14, magnet 15, cover plate 16, first component connection hole 17, second component connection hole 18, plugging slot 19, plug 20, arc surface 21, weight-reducing hole 22, sliding block 23, fan-shaped sliding groove 24, rotating positioning column 25, positioning hole 26, circular plugging platform 27, connecting flange round edge 28, positioning strip 29, clamping block 30, positioning strip-shaped hole 31, clamping hole 32, connection nut 33, threaded section 34, bump 35. Detailed Implementation Modes

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Such as Figures 1 to 5The shown ignition switch of construction machinery includes a lock body 1 and a lock core 2. A lock core installation cavity 3 is provided inside the lock body 1. The lock core 2 is rotatably installed in the lock core installation cavity 3. A blade groove (not shown in the figure) is provided on the lock core 2, and blades (not shown in the figure) matching the key are provided in the blade groove. A clamping groove 6 cooperating with the blade is provided in the lock core installation cavity 3. A driving member 7 is linked to the end of the lock core. The driving member 7 includes a circular rotating body 8 and a strip-shaped connecting block 9 which are integrally formed. The circular rotating body 8 is detachably connected to the lock core 2. The end face of the circular rotating body 8 away from the lock core 2 is fixedly connected to the lower end of the strip-shaped connecting block 9. The lock body 1 is provided with a rotating groove 10 sleeved on the outer periphery of the circular rotating body. A plurality of groups of grooves 11 evenly distributed at intervals are provided on the inner periphery of the rotating groove 10. The grooves 11 are recessed toward one side of the inner wall of the rotating groove 10. The circular rotating body 8 is provided with a through hole 12 arranged along the direction perpendicular to the central axis of the rotating groove 10. A spring 13 is provided in the through hole 12. One end of the spring 13 is inserted into the bottom of the through hole 12, and the other end is connected with a limiting block 14. The end of the limiting block 14 connected to the spring 13 is in a rectangular shape, and the other end of the limiting block 14 is provided with an arc surface 15. A cover plate 16 is detachably connected to the end of the lock body 1. A plurality of groups of first component connection holes 17 are provided on the cover plate 16. A plurality of groups of second component connection holes 18 are also provided on the end face of the strip-shaped connecting block 9 facing the cover plate 16. Among them, the limiting block 14 is designed with a "rectangular body and arc surface". This structure can not only meet the clamping and matching relationship between the limiting block 14 and the groove 11, but also will not randomly change its position due to the action of external force. When hanging on the limiting stop, the lock core 2 has high working reliability. Further, "there are a plurality of groups of first component connection holes 17 on the cover plate 16 and a plurality of groups of second component connection holes 18 on the strip-shaped connecting block 9". When the lock core 2 drives the driving member 7 to rotate, when switching among the off position, the limiting position, and the ignition position, the conductive components installed in the second component connection holes 18 will selectively connect with the conductive components of the first component connection holes 17 to realize the gear change. In this design, the lock body 1 serves as a housing to protect the internal parts, and the lock core installation cavity 3 provides a rotatable environment for the lock core 2. The blade groove on the lock core 2 is internally provided with blades matching the key, and is used in combination with the clamping groove 6 to increase the anti-theft performance. When the key is correctly inserted and rotated, the lock core 2 drives the linked driving member 7, including the circular rotating body 8 and the strip-shaped connecting block 9, to rotate accordingly. The circular rotating body 8 is detachably connected to the lock core 2, which is convenient for maintenance or replacement, and the strip-shaped connecting block 9 is used to transfer mechanical motion to other parts of the ignition system.

[0026] The circular rotating body 8 is provided with two sets of insertion slots 19 symmetrically distributed up and down. At the end of the lock core 2, a set of insertion blocks 20 adapted to the insertion slots 19 are provided corresponding to each set of insertion slots 19. At one end of each set of insertion slots 19 close to the center of the circular rotating body 8, there is an arc surface 21. The circular rotating body 8 is also provided with weight-reducing holes 22 distributed at both ends of the insertion slots 19. The cooperation between the insertion slots 19 and the insertion blocks 20 realizes the connection between the lock core 2 and the circular rotating body 8, and the disassembly and assembly between the lock core 2 and the circular rotating body 8 are extremely convenient, and the insertion block 20 can be inserted or pulled out. The arc surface 21 is designed to improve the smoothness of the insertion or extraction of the insertion block 20 into or out of the insertion slot 19. The weight-reducing holes 22 are designed to reduce the overall weight, which conforms to the development concept of automotive lightweighting.

[0027] The strip-shaped connecting block 9 is provided with a sliding block 23 on the end face of the lock core 2. The lock body 1 is provided with fan-shaped sliding grooves 24 distributed on the outer periphery of the rotating groove 10, and the sliding block 23 is inserted into the fan-shaped sliding groove 24; on the end face of the strip-shaped connecting block 9 facing the cover plate 16, there is also a rotation positioning column 25 coaxially arranged with the circular rotating body 8. The cover plate 16 is provided with a positioning hole 26 corresponding to the rotation positioning column 25, and the end of the rotation positioning column 25 is inserted into the positioning hole 26. The sliding block 23 can only reciprocate in the fan-shaped sliding groove 24, and the maximum rotation angle of the strip-shaped connecting block 9 is limited to prevent the lock core 2 from rotating excessively. The rotation positioning column 25 and the positioning hole 26 are designed to make the driving member 7 always rotate around the center of the positioning hole 26, improve the stable coaxial rotation of the circular rotating body 8 and the lock core 2, prevent the driving member 7 from shaking, and the positional relationship is more stable.

[0028] The end of the lock body 1 is provided with a circular insertion table 27 with a hollow interior. The fan-shaped sliding grooves 24 and the rotating grooves 10 are both distributed in the circular insertion table 27. The cover plate 16 is provided with a connecting flange round edge 28 sleeved on the outer periphery of the circular insertion table 27. A set of positioning strips 29 and multiple groups of spaced-apart clamping blocks 30 are provided on the outer periphery of the circular insertion table 27. The positioning strips 29 and the clamping blocks 30 both protrude towards the outside of the circular insertion table 27. The connecting flange round edge 28 is provided with positioning strip-shaped holes 31 adapted to the positioning strips 29, and each group of clamping blocks 30 on the connecting flange round edge 28 is provided with a set of clamping holes 32. Align the positioning strip 29 with the positioning strip-shaped hole 31 (to assist in the assembly positioning of the cover plate 16 and the lock body 1), and then insert the circular insertion table 27 into the fan-shaped sliding groove 24 until the clamping block 30 slides into the clamping hole 32 to realize the connection between the cover plate 16 and the lock body 1.

[0029] A connecting nut 33 is sleeved on the outer periphery of one end of the lock body 1 away from the cover plate 16. The lock body 1 is provided with a threaded section 34 corresponding to the connecting nut 33. The lock body 1 is further provided with a convex block 35 distributed at the tail end of the threaded section 34. A magnet 15 is installed in the convex block 35. The lock body 1 is further provided with an annular flange baffle 4 distributed at one end of the convex block 35. The annular flange baffle 4 is connected with a reinforcing rib 5 at the end face away from the convex block 35. The threaded section 34 and the connecting nut 33 are designed to install the lock body 1 on the vehicle body. Further, the convex block 35 is added to prevent the connecting nut 33 from being over-rotated and causing thread slipping. Further, a magnet 15 is arranged in the convex block 35, and the magnet 15 generates a suction force on the connecting nut 33, which can prevent the connecting nut 33 from becoming loose. Further, the annular flange baffle 4 and the reinforcing rib 5 are added to improve the structural strength of the lock body 1 and extend the service life.

[0030] The practicality and safety of the automotive ignition switch are significantly improved in this embodiment. When the key is inserted and rotated clockwise until the ignition position, the ignition is successful. When the lock core 2 is rotated counterclockwise to the limit position (the spring 13, the limit block 14, and multiple groups of grooves 11 are designed, and at this time the limit block 14 will be stuck in a group of grooves 11), the vehicle is in a non-shut-off state. At the same time, since the blade is not aligned with the blade slot, the key cannot be pulled out. After the hand is released, the lock core 2 is limited due to the engagement relationship between the limit block 14 and the groove 11 and will not rotate randomly, which has high safety. Continue to rotate the lock body 1 counterclockwise until it returns to the shut-off position, and the blade corresponds to the blade slot and the key can be pulled out. Among them, in the shut-off position, the limit position, and the ignition position, the limit block 14 will be stuck in a group of grooves 11 to prevent the lock core 2 from rotating.

Claims

1. An engineering machinery ignition switch, comprising a lock body and a lock core, wherein the lock body is provided with a lock core installation cavity, wherein the lock core is rotatably installed in the lock core installation cavity, wherein the lock core is provided with a blade groove, wherein a blade matching a key is provided in the blade groove, wherein a card slot matching the blade is provided in the lock core installation cavity, wherein a driving member is linked to the end of the lock core, and wherein the lock core is characterized in that: The driving member includes a circular rotating body and a strip connecting block which are integrally formed, the circular rotating body being detachably connected to the lock core, the end face of the circular rotating body being located away from the lock core being fixedly connected to the lower end of the strip connecting block, the lock body being provided with a rotating groove which is sleeved on the outer periphery of the circular rotating body, the inner periphery of the rotating groove being provided with a plurality of groups of grooves which are evenly distributed at intervals, the grooves being recessed toward one side of the inner wall of the rotating groove, the circular rotating body being provided with a through hole which is arranged in a direction perpendicular to the central axis of the rotating groove, the through hole being provided with a spring, one end of the spring being inserted into the bottom of the through hole and the other end being connected to a limiting block, the limiting block being located at the end connected to the spring and being in the form of a rectangular body, and the other end of the limiting block being provided with an arc surface; the end of the lock body being detachably connected with a cover plate, the cover plate being provided with a plurality of groups of first component connecting holes, and the end face of the strip connecting block which is located opposite to the cover plate is also provided with a plurality of groups of second component connecting holes.

2. The construction machinery ignition switch according to claim 1, characterized in that: The circular rotating body is provided with two groups of plug-in slots symmetrically distributed up and down, and the end of the lock core is provided with a group of plug-in blocks adapted to the plug-in slots corresponding to each group of plug-in slots. Each group of plug-in slots is provided with an arc surface at one end close to the center of the circular rotating body, and the circular rotating body is also provided with weight-reducing holes distributed at both ends of the plug-in slots.

3. The construction machinery ignition switch according to claim 2, characterized in that: The strip-shaped connecting block is provided with a sliding block on the end face of the lock core, and the lock body is provided with fan-shaped sliding grooves distributed on the outer periphery of the rotating groove, and the sliding block is inserted into the fan-shaped sliding groove; the strip-shaped connecting block is also provided with a rotating positioning column coaxially arranged with the circular rotating body on the end face facing the cover surface, and the cover plate is provided with a positioning hole corresponding to the rotating positioning column, and the end of the rotating positioning column is inserted into the positioning hole.

4. The construction machinery ignition switch according to claim 3, characterized in that: A circular plug-in platform with a hollow interior is provided at the end of the lock body, the fan-shaped sliding groove and the rotating groove are distributed in the circular plug-in platform, the cover plate is provided with a connecting flange circular edge which is sleeved on the outer periphery of the circular plug-in platform, the outer periphery of the circular plug-in platform is provided with a group of positioning strips and a plurality of groups of mutually spaced clamping blocks, the positioning strips and the clamping blocks both protrude toward the outside of the circular plug-in platform, the connecting flange circular edge is provided with a positioning strip hole which is adapted to the positioning strip, and the connecting flange circular edge is provided with a group of clamping holes corresponding to each group of clamping blocks.

5. The construction machinery ignition switch according to claim 4, characterized in that: The lock body is provided with a connecting nut on the outer periphery of one end away from the cover plate, the lock body is provided with a threaded section corresponding to the connecting nut, the lock body is also provided with a protrusion distributed at the tail end of the threaded section, a magnet is installed in the protrusion, the lock body is also provided with an annular flange baffle distributed at one end of the protrusion, and the end face of the annular flange baffle away from the protrusion is connected with a reinforcing rib.

Images