A lock cylinder linkage structure with idle mode for ignition switch

Abstract

The utility model relates to the technical field of ignition switch, especially relates to a lock cylinder linkage structure with idling mode for ignition switch, the end of lock cylinder sleeve is inserted with the connecting seat rotatable relative to it to the end of the pull line seat, the connecting seat is equipped with the clutching assembly, and the clutching assembly controls whether the connecting seat rotates with the lock cylinder sleeve, the end of lock cylinder is connected with the driving part and is inserted in the connecting seat, and the clutching assembly separates the connecting seat from the lock cylinder sleeve when the ignition switch is in the locked state, and the clutching assembly connects the connecting seat with the lock cylinder sleeve when the ignition switch is in the unlocked state, the utility model has the beneficial effects that: prevent violent unlocking, have the anti -theft function.

Description

Technical Field

[0001] This utility model relates to the field of ignition switch technology, specifically to a lock cylinder linkage structure with an idling mode for an ignition switch. Background Technology

[0002] Ignition switches are mainly used to control the ignition, shutdown, and locking of locomotives. Ignition switches are divided into smart locks and mechanical locks. In mechanical locks, a key needs to be inserted into the lock cylinder to unlock. Criminals often use tools to impersonate keys when stealing, attempting to pry the lock by forcibly turning the lock cylinder to achieve the purpose of violent unlocking. Therefore, it is necessary to develop a lock cylinder structure that cannot achieve the purpose of violent unlocking even if the lock cylinder is turned. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a lock cylinder linkage structure with a free-spinning mode for ignition switches, which addresses the shortcomings of the prior art and prevents forced unlocking, thus providing anti-theft functionality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lock cylinder linkage structure with a free-spinning mode for an ignition switch, comprising a lock housing, a lock cylinder rotatably disposed within the lock housing, and a lock cylinder sleeve fitted around the outer periphery of the lock cylinder, characterized in that: a connecting seat that can rotate relative to the lower end of the lock cylinder sleeve is inserted, a clutch assembly is provided in the connecting seat to control whether the connecting seat rotates with the lock cylinder sleeve, a driving member is engaged at the lower end of the lock cylinder, the driving member passes through the connecting seat to cause the clutch assembly to operate, when the ignition switch is in the locked state, the clutch assembly separates the connecting seat from the lock cylinder sleeve, and when the ignition switch is in the unlocked state, the clutch assembly connects the connecting seat to the lock cylinder sleeve.

[0005] This utility model, possessing the above-mentioned features, has the following characteristics: When the ignition switch is in the locked state, the clutch assembly is in the disengaged state, separating the connecting seat from the lock cylinder sleeve and cutting off the transmission relationship between the lock cylinder and the rotating shaft. If a person attempting to forcibly unlock the lock attempts to rotate the lock cylinder in any direction or beyond its range, the lock cylinder will spin freely with the lock cylinder sleeve, unable to transmit torque to the connecting seat and its linked rotating shaft, bolt bracket, bolt, and other components, thus avoiding shaft breakage due to impact and achieving an anti-theft effect. When the ignition switch is in the unlocked state, a key needs to be inserted and pressed down, the clutch assembly is in the engaged state, connecting the connecting seat to the lock cylinder sleeve. The key drives the lock cylinder to rotate, transmitting torque to the rotating shaft, normally driving the bolt bracket to control the bolt extension and retraction, realizing the gear switching function. This design not only ensures gear operation during normal use but also effectively resists damage from forced unlocking or arbitrary twisting through the "free-spinning separation" mechanism.

[0006] A further feature of this invention is that the clutch assembly includes two stacked, identical first and second inserts. The first insert has a first wing plate on its circumferential side, and the second insert has a second wing plate on its circumferential side. The second wing plate and the first wing plate are located on opposite sides. Both the first and second inserts have a first driving groove in their middle for a driving component to pass through. The first driving groove is rectangular. The connecting seat has a first slot for mounting the first and second inserts. The first slot includes a first slot body and first wing plate grooves located on both circumferential sides of the first slot body. The inner wall of the lock cylinder sleeve has a first recess at each end of the slot opposite to the first slot body. The first wing plate groove is provided with a first spring that allows the first insert and the second insert to pop out from the first slot. The driving component includes a snap-fit ​​part, a connecting part, and a driving part from top to bottom. The connecting part is a rectangular block. The connection between the driving part and the connecting part is provided with a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are located on both sides in the width direction of the driving part. The first inclined surface is higher than the second inclined surface. The side of the driving part connected to the first inclined surface is a first straight surface, and the side of the driving part connected to the second inclined surface is a second straight surface. When unlocking, the driving component moves axially downward, and the first straight surface and the second straight surface disengage from the contact with the first driving groove until the first driving groove contacts the connecting part.

[0007] The present invention, possessing the above-mentioned features, is as follows: When unlocking, inserting the key and pressing down causes the lock cylinder to drive the driving component to press down, disengaging the first and second inserts from the limiting positions of the first and second straight surfaces. Under the elastic force of the first spring, they pop out of the first slot and engage in the first groove, enabling the connecting seat and the lock cylinder sleeve to connect and achieve linkage. At this time, the first driving groove abuts against the connecting part. After locking, removing the key causes the driving component to move upward. During the upward movement, the first and second straight surfaces push the first and second inserts respectively, causing the two inserts to return to the first slot. The connecting seat and the lock cylinder sleeve separate, and the lock cylinder sleeve rotates freely. By setting two stacked first and second inserts, in the unlocked state, the two inserts pop out in opposite directions and engage with the lock cylinder sleeve, ensuring the stability of the connection between the connecting seat and the lock cylinder sleeve.

[0008] A further feature of this invention is as follows: the connecting seat has a second slot, a third insert is inserted into the second slot, the third insert has a third wing plate and a fourth wing plate on its two circumferential sides, the third insert has a second drive groove in the middle for the drive component to pass through, the second drive groove is a rectangle missing a corner, the part of the connecting seat with the second slot is located outside the lock cylinder sleeve, the inner wall of the lock shell has a second groove and a third groove for the third insert to be inserted into, when the ignition switch is in the off position, the third insert engages with the second groove, when the ignition switch is in the lock head position, the third insert engages with the third groove, the second slot includes a second slot body and a second wing plate groove on both circumferential sides of the second slot body, a second spring is provided in the second wing plate groove to disengage the third insert from the second groove, one side of the first straight surface has an inwardly recessed limiting groove, the inner wall of the limiting groove includes two symmetrically arranged inclined surfaces and a plane connecting the two inclined surfaces, when unlocking, the drive component moves axially downward, the first straight surface disengages from the second drive groove until the second drive groove engages with the limiting groove.

[0009] The present invention, possessing the above-mentioned features, is as follows: When locked, the third insert is engaged in the second or third groove under the contact of the first straight surface, fixing the connecting seat to the lock shell, ensuring that only the lock cylinder sleeve rotates freely in the off position or lock handle position, thus cutting off the transmission relationship between the connecting seat and the lock cylinder sleeve; When unlocking, inserting the key and pressing down causes the lock cylinder to drive the driving component to press down, the third insert disengages from the limiting effect of the first straight surface and springs into the second slot under the elastic force of the second spring, releasing the connection relationship between the connecting seat and the lock shell, allowing the connecting seat to rotate with the lock cylinder sleeve. At this time, the second driving groove and the limiting groove are engaged, and in the unlocked state, after the rotating shaft drives the connecting seat to rotate, the second slot rotates to the lock shell without a groove and the outer circumferential surface of the connecting seat is in contact with the inner wall of the lock shell, so the key cannot be removed when unlocking.

[0010] A further feature of this invention is that the locking part has a locking groove that engages with the end of the lock cylinder, and the end of the lock cylinder has a frustum that engages with the locking groove and can rotate relative to the locking groove.

[0011] The present utility model with the above features has a slot on the drive component that connects to the lock cylinder, restricting its axial movement but not affecting its circumferential movement. This design ensures that when the ignition switch is in the locked state, the lock cylinder sleeve and the lock cylinder will not affect the drive component when they are spinning freely, thus preventing forced unlocking.

[0012] A further feature of this invention is that: the outer circumferential surface of the lock cylinder is provided with a positioning groove along the radial direction, a third spring and a ball are provided in the positioning groove, the inner wall of the lock cylinder sleeve is provided with a small hole with a diameter smaller than the ball at the corresponding positioning groove, and the inner wall of the lock cylinder sleeve is provided with a third groove below the positioning groove, the upper inner wall of the third groove being an inclined surface.

[0013] The present invention, which has the above features, has a ball between the lock cylinder and the lock cylinder sleeve for positioning, to prevent the lock cylinder from moving axially when the fourth spring rebounds against the lock cylinder sleeve; and the upper inner wall of the third groove is set as an inclined surface, so that the ball can smoothly enter the third groove when the lock cylinder moves downward.

[0014] A further feature of this invention is that the connecting seat and the lock cylinder sleeve are connected by a U-shaped plug-in. The lock cylinder sleeve has a connecting hole that matches one end of the plug-in. The outer periphery of the connecting seat has an annular groove corresponding to the plug-in. The other end of the plug-in is inserted into the annular groove. The two sides of the plug-in are symmetrically provided with barbs that abut against the inner circumferential surface of the lock cylinder sleeve.

[0015] The present invention, which has the above features, connects the connecting seat and the lock cylinder sleeve through an annular groove and a U-shaped insert, so that the connecting seat and the lock cylinder sleeve achieve an axial connection while avoiding a radial connection with the lock cylinder sleeve; the barbs abut against the inner circumferential surface of the lock cylinder sleeve to prevent the insert from detaching from the connecting hole.

[0016] A further feature of this invention is that: a mounting base is embedded in the upper end of the lock cylinder sleeve, the mounting base is in contact with the end face of the lock cylinder, and a mounting groove is provided thereon. The bottom of the mounting groove is provided with a first keyhole for key insertion. A push block and at least one fifth spring are provided in the mounting groove. The push block covers the first keyhole under the elastic force of the fifth spring. The upper end face of the push block is provided with a downwardly inclined third slope. A cover is provided on the top of the lock cylinder sleeve. A second keyhole is opened on the cover corresponding to the first keyhole. The third slope is located below the second keyhole.

[0017] The present invention, which has the above-mentioned features, has the following function: when the key is not inserted, the push block blocks the first key opening under the pushing force of the fifth spring, thereby preventing dust and water.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0022] Figure 4 This is an exploded view of the connector of an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the connecting seat in an embodiment of the present utility model.

[0024] Figure 6 This is a schematic diagram of the drive component and insert in the locked state according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the drive component and the insert in the unlocked state according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the driving component in an embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the lock shell structure according to an embodiment of the present utility model.

[0028] Figure 10 This is a schematic diagram of the lock cylinder sleeve in an embodiment of the present utility model.

[0029] Figure 11 This is a schematic diagram showing the position of the sphere in an embodiment of the present invention.

[0030] Figure 12 This is an exploded view of the lock cylinder sleeve according to an embodiment of the present utility model. Detailed Implementation

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0032] like Figure 1-12 The ignition switch shown has a lock cylinder linkage structure with an idle mode, including a lock housing 1, a lock cylinder 8 rotatably disposed within the lock housing 1, and a lock cylinder sleeve 3 sleeved around the outer periphery of the lock cylinder 8. A connecting seat 10 that can rotate relative to the end of the lock cylinder sleeve 3 facing the pull cable base 5 is inserted. A clutch assembly 12 is provided in the connecting seat 10. The clutch assembly 12 controls whether the connecting seat 10 rotates with the lock cylinder sleeve 3. A driving member 13 is engaged at the end of the lock cylinder 8 facing the pull cable base 5. The driving member 13 passes through the connecting seat 10 and can cause the clutch assembly 12 to operate. When the ignition switch is in the locked state, the clutch assembly 12 separates the connecting seat 10 from the lock cylinder sleeve 3. When the ignition switch is in the unlocked state, the clutch assembly 12 connects the connecting seat 10 to the lock cylinder sleeve 3.

[0033] The clutch assembly 12 includes two stacked and identical first inserts 121 and second inserts 122. The first insert 121 has a first wing plate 1211 on its circumferential side, and the second insert 122 has a second wing plate 1221 on its circumferential side. The second wing plate 1221 and the first wing plate 1211 are located on opposite sides. Both the first insert 121 and the second insert 122 have a first drive groove 123 in the middle for the drive member 13 to pass through. The first drive groove 123 is rectangular. The connecting seat 10 has a first slot 101 for mounting the first insert 121 and the second insert 122. The first slot 101 includes a first slot body 1011 and first wing plate grooves 1012 located on both circumferential sides of the first slot body 1011. The inner wall of the lock cylinder sleeve 3 has grooves at both ends opposite the first slot body 1011. A first groove 31 is provided, and a first spring 124 is provided in the first wing plate groove 1012 to eject the first insert 121 and the second insert 122 from the first slot 101. The driving member 13 includes, from top to bottom, a snap-fit ​​part 131 that snaps into the lock cylinder 8, a connecting part 132, and a driving part 133. The connecting part 132 is a rectangular block. The connection between the driving part 133 and the connecting part 132 is provided with a first inclined surface 1331 and a second inclined surface 1332. The first inclined surface 1331 and the second inclined surface 1332 are located on both sides of the width direction of the driving part 133. The first inclined surface 1331 is higher than the second inclined surface 1332. The side of the driving part 133 connected to the first inclined surface 1331 is the first straight surface 1333, and the side of the driving part 133 connected to the second inclined surface 1332 is the second straight surface 1334.

[0034] The connecting seat 10 has a second slot 102, into which a third insert 14 is inserted. The third insert 14 has a third wing plate 141 and a fourth wing plate 142 on its two circumferential sides. The center of the third insert 14 has a second drive groove 143 through which the drive member 13 passes. The second drive groove 143 is a rectangle with one corner missing. The portion of the connecting seat 10 with the second slot 102 is located outside the lock cylinder sleeve 3. The inner wall of the lock housing 1 has a second groove 104 and a third groove 105 for the third insert 14 to be inserted. When the ignition switch is in the off position, one end of the third insert 14 is engaged in the second groove 104. When the ignition switch is in the lock cylinder position, one end of the third insert 14 is engaged in the third groove. 2 includes a second groove body 1021 and a second wing plate groove 1022 disposed on both sides of the second groove body 1021. The inner wall of the lock case 1 is provided with a second groove 104 at one end of the groove relative to the second groove body 1021. A second spring 15 is provided in the second wing plate groove 1022 to disengage the third insert 14 from the second groove. A limiting groove 1335 is provided on one side of the first straight surface 1333. The inner wall of the limiting groove 1335 includes two symmetrically arranged inclined surfaces 13351 and a plane 13352 connecting the two inclined surfaces 13351. When unlocking, the driving member moves axially downward, and the first straight surface 1333 disengages from the contact with the second driving groove 143 until the second driving groove 143 engages with the limiting groove 1335.

[0035] The drive component 13 has a snap-fit ​​groove 1311 inside the snap-fit ​​part 131 that snaps into the end of the lock cylinder 8. The end of the lock cylinder 8 has a frustum 82 that snaps into the snap-fit ​​groove 1311 and can rotate relative to the snap-fit ​​groove 1311.

[0036] The outer circumferential surface of the lock cylinder 8 is provided with a positioning groove 81 along the radial direction. The positioning groove 81 is provided with a third spring 16 and a ball 17. The inner wall of the lock cylinder sleeve 3 is provided with a small hole 34 with a diameter smaller than that of the ball 17 at the corresponding positioning groove 81. The inner wall of the lock cylinder sleeve 3 is provided with a third groove 32 below the positioning groove 81. The upper side of the third groove 32 is provided with a fourth inclined surface 321.

[0037] The connecting seat 10 is connected to the lock cylinder sleeve 3 via a U-shaped plug 18. The lock cylinder sleeve 3 is provided with a connecting hole 33 that matches one end of the plug 18. The outer periphery of the connecting seat 10 is provided with an annular groove 103 corresponding to the plug 18. The other end of the plug 18 is inserted into the annular groove 103. The two sides of the plug 18 are symmetrically provided with barbs 181 that abut against the inner periphery of the lock cylinder sleeve 3.

[0038] The upper end of the lock cylinder sleeve 3 is fitted with a mounting base 19, which is in contact with the end face of the lock cylinder 8. The mounting base 19 is provided with a mounting groove 191. The bottom of the mounting groove 191 is provided with a first keyhole 192 for key insertion. The mounting groove 191 is provided with a push block 20 and at least one fifth spring 21. The push block 20 covers the first keyhole 192 under the elastic force of the fifth spring 21. The upper end face of the push block 20 is provided with a downwardly inclined third slope 201. The lock cylinder sleeve 3 is provided with a cover 22. The cover 22 is provided with a second keyhole 221 corresponding to the first keyhole 192. The third slope 201 is located below the second keyhole 221.

[0039] The ignition switch installed in the lock cylinder linkage structure also includes a rotating shaft 4. The lock housing 1 is provided with a pull cable seat 5 at the end of the rotating shaft 4 away from the lock cylinder 8. A rotor switch 6 is provided on the side of the pull cable seat 5 away from the lock cylinder 8. The lock housing 1 is also provided with a drive plate 7 and a lock tongue 2. The rotating shaft 4 controls the extension and retraction of the lock tongue 2 through the drive plate 7. At least one pull cable block 9 is provided on the pull cable seat 5. The rotating shaft 4 controls the pull cable action by driving the pull cable block 9. This ignition switch has multiple positions, and the position switching is achieved by inserting the key and rotating the rotating shaft 4.

[0040] like Figure 7 The image shows the unlocked state. Inserting the key and pressing it down causes the lock cylinder to press down on the drive mechanism. The first and second inserts disengage from the limiting positions of the first and second straight surfaces. Under the elastic force of the first spring, they pop out of the first slot and engage in the first groove, connecting the connecting seat and the lock cylinder sleeve. At this time, the first drive groove abuts against the connecting part. Figure 6 The image shows the locked state. When the key is removed, the drive unit moves upward. During the upward movement, the first and second inclined surfaces push the first and second inserts respectively, causing the two inserts to return to the first slot. The connecting seat separates from the lock cylinder sleeve. At this time, the lock cylinder sleeve spins freely. When criminals use tools to impersonate the original key and insert them into the ignition switch, they can only make the lock cylinder and lock cylinder sleeve spin freely and cannot be forcibly unlocked.

Claims

1. A lock cylinder linkage structure with a free-spinning mode for an ignition switch, comprising a lock housing, a lock cylinder rotatably disposed within the lock housing, and a lock cylinder sleeve sleeved around the outer periphery of the lock cylinder, characterized in that: The lower end of the lock cylinder sleeve is inserted with a rotatable connecting seat. The connecting seat is equipped with a clutch assembly that controls whether the connecting seat rotates with the lock cylinder sleeve. The lower end of the lock cylinder is engaged with a driving component. The driving component passes through the connecting seat and can cause the clutch assembly to operate. When the ignition switch is in the locked state, the clutch assembly separates the connecting seat from the lock cylinder sleeve. When the ignition switch is in the unlocked state, the clutch assembly connects the connecting seat to the lock cylinder sleeve.

2. The lock cylinder linkage structure with idling mode for an ignition switch according to claim 1, characterized in that: The clutch assembly includes two stacked, identical first and second inserts. The first insert has a first wing plate on its circumferential side, and the second insert has a second wing plate on its circumferential side. The second wing plate and the first wing plate are located on opposite sides. Both the first and second inserts have a first driving groove in their middle for a driving component to pass through. The first driving groove is rectangular. The connecting seat has a first slot for mounting the first and second inserts. The first slot includes a first slot body and first wing plate grooves located on both circumferential sides of the first slot body. The inner wall of the lock cylinder sleeve has first grooves at the two ends opposite the slot body of the first slot body. The plate groove is provided with a first spring that allows the first insert and the second insert to pop out from the first slot. The driving component includes a snap-fit ​​part, a connecting part, and a driving part from top to bottom. The connecting part is a rectangular block. The connection between the driving part and the connecting part is provided with a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are located on both sides of the width direction of the driving part. The first inclined surface is higher than the second inclined surface. The side of the driving part connected to the first inclined surface is a first straight surface, and the side of the driving part connected to the second inclined surface is a second straight surface. When unlocking, the driving component moves axially downward, and the first straight surface and the second straight surface disengage from the first driving slot until the first driving slot abuts against the connecting part.

3. The lock cylinder linkage structure with idling mode for an ignition switch according to claim 2, characterized in that: The connecting seat has a second slot, into which a third insert is inserted. The third insert has a third wing plate and a fourth wing plate on its two circumferential sides. The third insert has a second drive groove in the middle for the drive component to pass through. The second drive groove is a rectangle with one corner missing. The part of the connecting seat with the second slot is located outside the lock cylinder sleeve. The inner wall of the lock shell has a second groove and a third groove for the third insert to be inserted. When the ignition switch is in the off position, the third insert engages with the second groove. When the ignition switch is in the lock head position, the third insert engages with the third groove. The second slot includes a second slot body and second wing plate grooves on both circumferential sides of the second slot body. A second spring is provided in the second wing plate groove to disengage the third insert from the second groove. One side of the first straight surface has an inwardly recessed limiting groove. The inner wall of the limiting groove includes two symmetrically arranged inclined surfaces and a plane connecting the two inclined surfaces.

4. The lock cylinder linkage structure with idling mode for an ignition switch according to claim 3, characterized in that: The locking part has a locking groove that engages with the end of the lock cylinder, and the end of the lock cylinder has a frustum that engages with the locking groove and can rotate relative to the locking groove.

5. The lock cylinder linkage structure with idling mode for any ignition switch according to any one of claims 1-4, characterized in that: The outer circumferential surface of the lock cylinder is provided with a positioning groove along the radial direction. A third spring and a ball are provided in the positioning groove. The inner wall of the lock cylinder sleeve is provided with a small hole with a diameter smaller than that of the ball at the corresponding positioning groove. The inner wall of the lock cylinder sleeve is provided with a third groove below the positioning groove. The upper inner wall of the third groove is a slope.

6. A lock cylinder linkage structure with an idling mode for an ignition switch according to claim 5, characterized in that: The connecting seat and the lock cylinder sleeve are connected by a U-shaped plug. The lock cylinder sleeve has a connecting hole that matches one end of the plug. The outer periphery of the connecting seat has an annular groove corresponding to the plug. The other end of the plug is inserted into the annular groove. The two sides of the plug are symmetrically provided with barbs that abut against the inner circumferential surface of the lock cylinder sleeve.

7. A lock cylinder linkage structure with an idling mode for an ignition switch according to claim 6, characterized in that: The upper end of the lock cylinder sleeve is fitted with a mounting base, which is in contact with the end face of the lock cylinder. The mounting base has a mounting groove, and the bottom of the mounting groove has a first keyhole for key insertion. The mounting groove contains a push block and at least one fifth spring. The push block covers the first keyhole under the elastic force of the fifth spring. The upper end face of the push block has a downwardly inclined third slope. The lock cylinder sleeve is covered with a face cover, and the face cover has a second keyhole corresponding to the first keyhole. The third slope is located below the second keyhole.

Images