A spare tire locking mechanism and spare tire lifter

Abstract

The present application relates to a spare tire locking mechanism and a spare tire lifter thereof, which includes: a pallet assembly and a locking assembly, the locking assembly including an operating unit and two spare tire trays, the operating unit being detachably connected to the pallet assembly, the two spare tire trays being relatively arranged on both sides of the operating unit, the operating unit being detachably connected to the spare tire trays, and the operating unit driving the two spare tire trays to move so that the relative distance between the two spare tire trays is adjustable. In the present invention, the spare tire locking mechanism can drive the spare tire trays to move via the operating unit, thereby changing the spacing between the two spare tire trays to match spare tires with different pitch circle diameters. This achieves the effect of "one mechanism can adapt to a variety of spare tires", reduces the variety of spare tire lifters, improves modularity, and saves costs; at the same time, the operating unit is detachably connected to the pallet assembly and the spare tire tray, making it easy for the device to replace a single damaged part within the mechanism, thereby improving the utilization rate of parts and reducing maintenance costs.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a spare tire locking mechanism and a spare tire lifter thereof. Background Art

[0002] In the prior art, the spare tire lifter is connected to the spare tire lifter support plate via a chain. The spare tire lifter support plate is used to secure the spare tire through position limiting. Because tires with different center circle diameters require different support plate dimensions, for example, currently available tires have pitch circle diameters of 335 / 385.75 / 275 / 225.25, requiring at least four types of spare tire lifter support plates, resulting in poor versatility. Furthermore, the position limiting mechanism of the spare tire lifter support plate can lead to positioning errors, resulting in unreliable securing. As the number of tire types increases, the number of spare tire lifter support plates will increase, leading to an increase in product variety. Summary of the Invention

[0003] The embodiment of the present application provides a spare tire locking mechanism and a spare tire lifter thereof to solve the problems in the related art that spare tires of different sizes and models require different specifications of support plates, the spare tire lifter support plates have poor versatility, and the fixing effect is not reliable.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: In the first aspect, a spare tire locking mechanism is provided, which includes: a pallet assembly and a locking assembly, the locking assembly includes an operating unit and two spare tire trays, the operating unit is detachably connected to the pallet assembly, the two spare tire trays are relatively arranged on both sides of the operating unit, the operating unit is detachably connected to the spare tire tray, and the operating unit drives the two spare tire trays to move so that the relative distance between the two spare tire trays can be adjusted.

[0005] In some embodiments, the operating unit includes: a gear and two racks, the gear is detachably connected to the pallet assembly; the two racks are relatively arranged on both sides of the gear and are connected to the gear transmission, the rack is slidably connected to the pallet assembly, and one end of the rack is detachably connected to the spare tire tray through a mounting member.

[0006] In some embodiments, the pallet assembly includes: a base and a connecting member, wherein two tracks are opened at the top of the base, and the two racks are respectively slidably connected inside the two tracks; the connecting member is fixed to the top of the base and is located between the two tracks, and the connecting member is detachably connected to the gear.

[0007] In some embodiments, both ends of the track are fixedly connected to limit members, and the rack includes a first part, which is engaged with the gear and is located between the two limit members.

[0008] In some embodiments, the rack further includes a second portion, the second portion is connected to the first portion, and a portion of the second portion is located between the two limiting members.

[0009] In some embodiments, the spare tire locking mechanism further includes: a cover, which is arranged on the outside of the operating unit and is detachably connected to the support plate assembly, and a through slot for the operating unit to pass through is formed on the cover.

[0010] In some embodiments, the spare tire locking mechanism further includes: an indicator component, which is connected to the operating unit and is used to determine the moving position of the spare tire tray.

[0011] In some embodiments, the indicating assembly includes: a pointer and a scale mark, one end of the pointer is connected to the operating unit, and the other end is in contact with the surface of the cover; the scale mark is provided on the surface of the cover.

[0012] In some embodiments, a track line is provided on the cover, the scale mark is located on one side of the track line, and a notch is provided on the cover, the notch is located on the track line;

[0013] The pointers include:

[0014] A connecting rod, wherein the connecting rod is fixedly connected to the operating unit;

[0015] The pointer body has one end hinged to the connecting rod and the other end slidingly connected to the cover surface along a trajectory line.

[0016] In a second aspect, a spare tire lifter is provided, comprising: the spare tire locking mechanism as described above and a spare tire lifter body, wherein the spare tire lifter body is connected to the spare tire locking mechanism via a chain.

[0017] The beneficial effects of the technical solution provided by this application include:

[0018] An embodiment of the present application provides a spare tire locking mechanism and a spare tire lifter thereof, wherein the spare tire locking mechanism can drive the spare tire tray to move through an operating unit, thereby changing the distance between the two spare tire trays to match spare tires with different pitch circle diameters, achieving the effect of "one mechanism can adapt to a variety of spare tires", reducing the variety of spare tire lifters, improving the degree of modularity, and saving costs; at the same time, the operating unit is detachably connected to the pallet assembly and the spare tire tray, making it easy for the device to replace a single damaged part in the mechanism, improving the utilization rate of parts, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 This is an exploded view of the spare tire locking mechanism provided in an embodiment of the present application.

[0023] In the figure: 1, support plate assembly; 10, base; 100, track; 1000, limiter; 11, connector; 110, connecting column; 111, pin key;

[0024] 2. Locking assembly; 20. Gear; 21. Rack; 210. Connecting hole; 211. Rivet; 22. Spare tire tray; 220. Connecting plate; 221. Fixing bolt; 222. Tray body;

[0025] 3. Cover; 30. Inner cover; 31. Outer cover; 32. Notch; 33. Through slot;

[0026] 4. Indicator assembly; 40. Pointer; 400. Connecting rod; 401. Pointer body; 41. Scale mark;

[0027] 5. Spare tire lifter body; 50. Mounting bracket; 51. Rocker; 52. Support base;

[0028] 6. Chain;

[0029] 7. Spare tire. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] See also Figures 1 to 3The embodiment of the present application provides a spare tire locking mechanism and a spare tire lifter thereof, which can solve the problems in the related art that spare tires of different sizes and models require different specifications of support plates, the spare tire lifter support plates have poor versatility, and the fixing effect is not reliable.

[0032] In the prior art, the spare tire lifter is connected to the spare tire lifter support plate via a chain 6. The spare tire lifter support plate is used to secure the spare tire 7 by means of position limits. Because tires with different center circle diameters require different support plate dimensions, for example, currently available tires have pitch circle diameters of 335 / 385.75 / 275 / 225.25, requiring at least four types of spare tire lifter support plates, resulting in poor versatility. Furthermore, the position limits used to secure the spare tire lifter support plate can lead to positioning errors, resulting in unreliable securing. As the number of tire types increases, the number of spare tire lifter support plates will increase, leading to a greater variety of products.

[0033] In order to solve the problems that spare tires 7 of different sizes and models require different pallet specifications, the spare tire lifter pallet has poor versatility and the fixing effect is not reliable, on the first hand, an embodiment of the present application provides a spare tire locking mechanism, which includes: a pallet assembly 1 and a locking assembly 2, the locking assembly 2 includes an operating unit and two spare tire trays 22, the operating unit is detachably connected to the pallet assembly 1, the two spare tire trays 22 are relatively arranged on both sides of the operating unit, the operating unit and the spare tire tray 22 are detachably connected, and the operating unit drives the two spare tire trays 22 to move so that the relative distance between the two spare tire trays 22 can be adjusted.

[0034] The two spare tire trays 22 are driven to move by the operating unit to adjust the relative distance between the two spare tire trays 22 so that the device can adapt to different spare tires 7. After the two spare tire trays 22 are adjusted into place, the spare tire trays 22 are connected to the spare tire 7 to fix the spare tire 7.

[0035] In this application, the spare tire locking mechanism can drive the spare tire tray 22 to move via the operating unit, thereby changing the distance between the two spare tire trays 22 to accommodate spare tires 7 with different pitch circle diameters. This achieves the effect of "one mechanism can accommodate a variety of spare tires 7", reducing the number of spare tire lifters, improving modularity, and saving costs. At the same time, the operating unit is detachably connected to the support plate assembly 1 and the spare tire tray 22, making it easy to replace damaged individual parts within the mechanism, improving parts utilization and reducing maintenance costs.

[0036] Among them, the spare tire tray 22 includes a tray body 222 and a fixing bolt 221. The fixing bolt 221 is vertically arranged, passes through the interior of the tray body 222, and is threadedly connected to the tray body 222. The spare tire tray 22 can be connected to the spare tire 7 through the fixing bolt 221.

[0037] In some possible embodiments, the operating unit includes a gear 20, a bevel gear 20, and a double-headed screw, wherein the gear 20 is detachably connected to the pallet assembly 1; the bevel gear 20 is detachably connected to the pallet assembly 1 and is located on one side of the gear 20, and is in transmission connection with the gear 20; the double-headed screw is arranged horizontally, and is passed through the interior of the bevel gear 20 and fixedly connected to the bevel gear 20, and the spare tire tray 22 is threadedly connected to the double-headed screw. The extension direction of the central axis of the gear 20 is perpendicular to the extension direction of the length of the double-headed screw. When the gear 20 rotates, it drives the bevel gear 20 and the double-headed screw to rotate, thereby converting the rotational motion into a motion in which the spare tire tray 22 moves horizontally along the double-headed screw. When the gear 20 rotates forward, the relative distance between the two spare tire trays 22 increases; when the gear 20 rotates backward, the relative distance between the two spare tire trays 22 decreases.

[0038] Furthermore, in this embodiment, in order to prevent the spare tire tray 22 from rotating around the double-headed screw during translation, a limit rod is provided to be connected to the tray body 222, and the limit rod is passed through the interior of the pallet assembly 1. When the spare tire tray 22 moves, the limit rod slides inside the pallet assembly 1 to limit the spare tire tray 22.

[0039] In some other possible embodiments, Figure 3 As shown, the operating unit includes: a gear 20 and two racks 21. The gear 20 is detachably connected to the pallet assembly 1. The two racks 21 are relatively arranged on both sides of the gear 20 and are transmission-connected to the gear 20. The rack 21 is slidingly connected to the pallet assembly 1. One end of the rack 21 is detachably connected to the spare tire tray 22 through a mounting member.

[0040] In this embodiment, the rotation of the gear 20 is converted into horizontal movement of the spare tire tray 22 along with the rack 21 through the transmission of the gear 20 and the rack 21. When the gear 20 rotates forward, the relative distance between the two spare tire trays 22 increases; when the gear 20 rotates backward, the relative distance between the two spare tire trays 22 decreases.

[0041] In this embodiment, the rack 21 and the spare tire tray 22 can be removably connected in a variety of ways. For example, a connecting plate 220 can be fixedly connected to one side of the spare tire tray 22. Connecting holes 210 can be defined on both the connecting plate 220 and the rack 21, away from the gear 20. A rivet 211 can be provided as a mounting member and inserted through the connecting holes 210 on the connecting plate 220 and the rack 21 to rivet the spare tire tray 22 to the rack 21. Alternatively, the rack 21 can be recessed at the location where the connecting holes 210 are defined, so that one side of the connecting plate 220 is coplanar with the other side of the rack 21 when the connecting plate 220 is connected to the rack 21. Alternatively, corresponding interlocking structures can be provided on both the rack 21 and the spare tire tray 22, allowing the rack 21 and the spare tire tray 22 to be removably connected by interlocking. Of course, there are many other removable connection methods, such as screwing and snapping, which are not listed here. The purpose of setting the rack 21 and the spare tire tray 22 as a detachable connection is to facilitate the replacement of a single damaged part in the device (such as a damaged rack 21 or spare tire tray 22), thereby improving the utilization rate of parts and reducing maintenance costs.

[0042] The above embodiments are merely multiple possible implementations of the embodiments of the present application, and the embodiments of the present application are not limited thereto.

[0043] When the gear 20 is rotated by manual operation, a raised handle for human contact is fixedly connected to the top of the gear 20, so that the operator can drive the gear 20 to rotate through the raised handle.

[0044] On the basis of the above embodiment, the pallet assembly 1 is described in detail in the form of a gear 20 and a rack 21: Specifically, the pallet assembly 1 includes: a base 10 and a connector 11, two tracks 100 are opened at the top of the base 10, and the two racks 21 are respectively slidably connected to the inside of the two tracks 100; the connector 11 is fixed to the top of the base 10 and is located between the two tracks 100, and the connector 11 is detachably connected to the gear 20.

[0045] like Figure 3 As shown, the track 100 defined on the base 10 limits the movement of the rack 21. The connector 11 comprises a connecting column 110 and a key 111. The connecting column 110 is rotatably connected to the top of the base 10. The gear 20 is sleeved onto the connecting column 110 and fixedly connected to the gear 20 via the key 111. The track 100 is provided on either side of the gear 20. When the rack 21 is installed within the track 100, the rack 21 meshes with the gear 20, allowing the rack 21 to slide along the track 100 on the base 10.

[0046] Furthermore, in order to ensure that the rack 21 does not separate from the track 100, based on the above embodiment, in this embodiment, both ends of the track 100 are fixedly connected to the limiting members 1000, and the rack 21 is provided to include a first part, the first part is engaged with the gear 20, and the first part is located between the two limiting members 1000.

[0047] In this embodiment, the first portion is provided with teeth that mesh with the gear 20. The limiter 1000 is fixed to the side wall of the track 100 and is located at the end of the track 100 so that the width of the two ends of the track 100 is smaller than the width of the first portion to prevent the rack 21 from falling off the track 100.

[0048] Furthermore, the rack 21 includes a second portion connected to the first portion and partially located between the two stoppers 1000. To prevent the teeth on the first portion from directly colliding with the stoppers 1000, the second portion is provided with a mating piece that contacts the stoppers 1000. The mating piece is also located between the two stoppers 1000 and on one side of the first portion. When the rack 21 moves and the mating piece on the second portion contacts the stoppers 1000, the rack 21 stops moving.

[0049] Therefore, regardless of whether the gear 20 rotates forward or backward, the rack 21 will not move out of the track 100. The limiting member 1000 can be a columnar limiting column having a length so that the width of the two end portions of the track 100 is smaller than the width of the first part.

[0050] On the basis of the above embodiment, in order to prevent the locking assembly 2 and the pallet assembly 1 from being exposed, the spare tire locking mechanism is further provided with: a cover 3, which is arranged on the outside of the operating unit and is detachably connected to the pallet assembly 1, and a through slot 33 for the operating unit to pass through is provided on the cover 3. The cover 3 is detachably connected to the base 10, and covers the base 10 and the locking assembly 2, wherein the detachable connection method can be screw connection, riveting, etc. By providing a cover body to cover the locking assembly 2 and the pallet assembly 1, it is possible to prevent external dust from falling onto the gear 20 and the rack 21 and affecting the transmission effect of the gear 20 and the rack 21, and it is also possible to protect the locking assembly 2 and the pallet assembly 1, thereby extending the service life of the locking assembly 2 and the pallet assembly 1.

[0051] The cover body can be provided as an integral structure, or, when the cover body covers the locking assembly 2 and the pallet assembly 1, a cover 3 is provided to facilitate the inspection and replacement of the locking assembly 2 or the pallet assembly 1, including an inner cover 30 and an outer cover 31. The inner cover 30 is connected to the middle of the top of the outer cover 31, and the inner cover 30 and the outer cover 31 are provided with a detachable connection. When the locking assembly 2 or the pallet assembly 1 needs to be inspected or replaced, the inner cover 30 can be removed according to the actual situation, or the cover body can be completely removed from the pallet assembly 1.

[0052] No matter whether a double-headed screw is provided to drive the spare tire tray 22 to move, or a rack 21 is provided to drive the tray to move, through slots 33 need to be provided on both sides of the cover body for the double-headed screw or the rack 21 to pass through.

[0053] On the basis of the above embodiment, in order to reflect the distance between the two fixing bolts 221 when the locking assembly 2 moves (the distance between the two fixing bolts 221 must be consistent with the pitch circle diameter of the spare tire 7 to match), the spare tire locking mechanism is also provided to include: an indicator assembly 4, which is connected to the operating unit and is used to determine the moving position of the spare tire tray 22.

[0054] Since the indicating assembly 4 is provided, no matter whether the cover 3 is an integrated structure or a split structure, an opening is provided in the middle of the top end of the cover 3 for the indicating assembly 4 to pass through.

[0055] The indicator assembly 4 includes a pointer 40 and scale markings 41. One end of the pointer 40 is connected to the operating unit, and the other end is in contact with the surface of the cover 3. The scale markings 41 are provided on the surface of the cover 3. Specifically, one end of the pointer 40 is fixed to the gear 20. When the gear 20 rotates, the other end of the pointer 40 slides on the surface of the cover 3. The scale markings 41 are provided on the surface of the cover 3. When the gear 20 rotates to different angles, the other end of the pointer 40 points to different scale markings 41, indicating the different sizes of spare tires 7 that the device supports.

[0056] Furthermore, a track line is provided on the cover 3, with a scale mark 41 located on one side of the track line. A notch 32 is provided on the cover 3, and the notch 32 is located on the track line. A pointer 40 is provided, comprising: a connecting rod 400 and a pointer body 401, wherein the connecting rod 400 is fixedly connected to the operating unit; one end of the pointer body 401 is hinged to the connecting rod 400, and the other end is slidably connected to the surface of the cover 3 along the track line.

[0057] When the cover body includes an inner cover 30 and an outer cover 31, half grooves are formed at intervals along the circumference of the inner cover 30 at the top end of the outer side of the inner cover 30, and half grooves are also formed at intervals along the circumference of the outer cover 31 at the top end of the inner side of the outer cover 31. When the inner cover 30 and the outer cover 31 are connected, the half grooves on the inner cover 30 correspond to the half grooves on the outer cover 31 one by one, forming a plurality of notches 32;

[0058] A scale mark 41 is set on one side of each slot 32. When the other end of the pointer body 401 moves to the slot 32, since the pointer body 401 is hinged to the connecting rod 400, the other end of the pointer body 401 falls due to its own gravity and is inserted into the slot 32. If the gear 20 is manually driven to rotate, when the other end of the pointer body 401 is inserted into the slot 32, the pointer body 401 cooperates with the slot 32 to provide a resistance to the rotation of the gear 20, so as to remind the operator that the distance between the two fixing bolts 221 at this time matches one model of the spare tire 7. The operator determines whether it is necessary to continue to rotate the gear 20 by checking the scale mark 41 on one side of the slot 32. When the gear 20 continues to rotate, the other end of the pointer body 401 inserted into the slot 32 extends out from the slot 32 and continues to slide on the surface of the cover 3 until it is inserted into the next slot 32. In order to facilitate the operator's work, a mark is set on the surface of the cover 3, and the mark is used to show the matching relationship between different distances between the two fixing bolts 221 and different models of spare tires 7.

[0059] In summary, this application has the following advantages:

[0060] 1. The spare tire locking mechanism enables the axial rotation of the gear 20 to cause the fixing bolts 221 on the spare tire tray 22 to move radially along the gear 20, thereby adjusting the spacing between the two fixing bolts 221 to accommodate spare tires 7 with different pitch circle diameters. This achieves the goal of "one mechanism can accommodate multiple spare tires 7," reducing the number of spare tire lifters and spare tire locking mechanisms, improving modularity, and saving costs.

[0061] 2. This application makes it easy to replace single damaged parts within the mechanism, thereby increasing parts utilization and reducing maintenance costs.

[0062] 3. The indicator component 4 has an indication function. The model of tire corresponding to the position of the fixing bolt 221 is determined by the different rotation angles of the gear 20 and displayed through the indicator component 4.

[0063] 4. Improve product appearance quality and the appearance of the entire vehicle.

[0064] In the second aspect, an embodiment of the present application provides a spare tire lifter, which includes: the spare tire locking mechanism and the spare tire lifter body provided in any of the above embodiments of the present application, and the spare tire lifter body 5 is connected to the spare tire locking mechanism through a chain 6.

[0065] The two spare tire trays 22 are driven to move by the operating unit to adjust the relative distance between the two spare tire trays 22 so that the device can adapt to different spare tires 7. After the two spare tire trays 22 are adjusted into place, the spare tire trays 22 are connected to the spare tire 7 to fix the spare tire 7.

[0066] In this application, the spare tire locking mechanism can drive the spare tire tray 22 to move via the operating unit, thereby changing the distance between the two spare tire trays 22 to accommodate spare tires 7 with different pitch circle diameters. This achieves the effect of "one mechanism can accommodate a variety of spare tires 7", reducing the number of spare tire lifters, improving modularity, and saving costs. At the same time, the operating unit is detachably connected to the support plate assembly 1 and the spare tire tray 22, making it easy to replace damaged individual parts within the mechanism, improving parts utilization and reducing maintenance costs.

[0067] The spare tire lifter body 5 comprises a mounting bracket 50, a support base 52, and a rocker 51. Two mounting brackets 50 are provided, with the support base 52 being removable between the two mounting brackets. A gear transmission assembly is housed within the support base 52, and a rocker 51 is disposed on one side of the support base 52. The rocker 51 is detachably connected to the gear transmission assembly. Rotating the rocker 51 activates the gear transmission assembly, causing the chain 6 to wrap around it as the gear transmission assembly moves. The other end of the chain 6 is connected to the spare tire locking mechanism, which raises the spare tire 7, lifting it. Finally, the spare tire 7 is secured to the mounting bracket 50 via the spare tire tray 22.

[0068] The spare tire tray 22 includes a tray body 222 and a fixing bolt 221. The fixing bolt 221 is vertically arranged and passes through the interior of the tray body 222 and is threadedly connected to the tray body 222. The fixing bolt 221 connects the spare tire tray 22 to the spare tire 7. The gear transmission assembly is rotated by rotating the rocker 51, and the chain 6 is wound around the gear transmission assembly as it rotates. The other end of the chain 6 is connected to the spare tire lifter support plate mechanism 6. The support plate rises to lift the spare tire 7, and is finally fixed to the spare tire lifter bracket 2 via the support plate bolt.

[0069] In some possible embodiments, the operating unit includes a gear 20, a bevel gear 20, and a double-headed screw, wherein the gear 20 is detachably connected to the pallet assembly 1; the bevel gear 20 is detachably connected to the pallet assembly 1 and is located on one side of the gear 20, and is in transmission connection with the gear 20; the double-headed screw is arranged horizontally and passes through the interior of the bevel gear 20 and is connected to the bevel gear 20, and the spare tire tray 22 is threadedly connected to the double-headed screw. The extension direction of the central axis of the gear 20 is perpendicular to the extension direction of the length of the double-headed screw. When the gear 20 rotates, it drives the bevel gear 20 and the double-headed screw to rotate, thereby converting the rotational motion into a motion in which the spare tire tray 22 moves horizontally along the double-headed screw. When the gear 20 rotates forward, the relative distance between the two spare tire trays 22 increases; when the gear 20 rotates backward, the relative distance between the two spare tire trays 22 decreases.

[0070] Furthermore, in this embodiment, in order to prevent the spare tire tray 22 from rotating around the double-headed screw during translation, a limit rod is provided to be connected to the tray body 222, and the limit rod is passed through the interior of the pallet assembly 1. When the spare tire tray 22 moves, the limit rod slides inside the pallet assembly 1 to limit the spare tire tray 22.

[0071] In other possible embodiments, the operating unit includes: a gear 20 and two racks 21, the gear 20 is detachably connected to the pallet assembly 1, the two racks 21 are relatively arranged on both sides of the gear 20, and are transmission-connected to the gear 20, the rack 21 is slidingly connected to the pallet assembly 1, and one end of the rack 21 is detachably connected to the spare tire tray 22 through a mounting member.

[0072] In this embodiment, through the transmission of the gear 20 and the rack 21, the rotational movement of the gear 20 is converted into the horizontal movement of the spare tire tray 22 along with the rack 21. When the gear 20 rotates forward, the relative distance between the two spare tire trays 22 increases; when the gear 20 rotates backward, the relative distance between the two spare tire trays 22 decreases.

[0073] In this embodiment, there are multiple ways to detachably connect the rack 21 and the spare tire tray 22: for example, a connecting plate 220 is fixedly connected to one side of the spare tire tray 22, and connecting holes 210 are provided on both the connecting plate 220 and the side of the rack 21 away from the gear 20. A mounting member is provided in the form of a rivet 211, which is passed through the connecting holes 210 on the connecting plate 220 and the rack 21 to rivet the spare tire tray 22 to the rack 21. Furthermore, the location of the connecting hole 210 on the rack 21 is recessed, so that when the connecting plate 220 is connected to the rack 21, one side of the connecting plate 220 is coplanar with one side of the rack 21. Alternatively, corresponding snap-fit structures are provided on both the rack 21 and the spare tire tray 22, so that the rack 21 and the spare tire tray 22 can be detachably connected by snapping. Of course, there are many other detachable connection methods, such as screw connection, snap connection, etc., which will not be listed one by one here. The purpose of setting the rack 21 and the spare tire tray 22 as a detachable connection is to facilitate the replacement of a single damaged part in the device (such as a damaged rack 21 or spare tire tray 22), thereby improving the utilization rate of parts and reducing maintenance costs.

[0074] The above embodiments are merely multiple possible implementations of the embodiments of the present application, and the embodiments of the present application are not limited thereto.

[0075] When the gear 20 is rotated by manual operation, a raised handle for human contact is fixedly connected to the top of the gear 20, so that the operator can drive the gear 20 to rotate through the raised handle.

[0076] On the basis of the above embodiment, the pallet assembly 1 is described in detail in the form of a gear 20 and a rack 21: Specifically, the pallet assembly 1 includes: a base 10 and a connector 11, two tracks 100 are opened at the top of the base 10, and the two racks 21 are respectively slidably connected to the inside of the two tracks 100; the connector 11 is fixed to the top of the base 10 and is located between the two tracks 100, and the connector 11 is detachably connected to the gear 20.

[0077] like Figure 3 As shown, the track 100 provided on the base 10 limits the movement of the rack 21. The connector 11 includes a connecting column 110 and a key 111. The connecting column 110 is rotatably connected to the top of the base 10. The gear 20 is sleeved onto the connecting column 110 and fixedly connected to the connecting column 110 via the key 111. The track 100 is provided on both sides of the gear 20. When the rack 21 is installed within the track 100, the rack 21 meshes with the gear 20. After meshing with the gear 20, the rack 21 can slide along the track 100 on the base 10.

[0078] The chain 6 is connected to the connecting column 110. Specifically, a mounting groove is opened at the top of the connecting column 110, and a connecting block is fixed at one end of the chain 6. Threaded holes are set on the mounting groove and the connecting block. Bolts are used to penetrate the threaded holes on the mounting groove and the connecting block to connect the chain 6 to the connecting column 110.

[0079] Furthermore, in order to ensure that the rack 21 does not separate from the track 100, based on the above embodiment, in this embodiment, both ends of the track 100 are fixedly connected to the limiting members 1000, and the rack 21 is provided to include a first part, the first part is engaged with the gear 20, and the first part is located between the two limiting members 1000.

[0080] In this embodiment, the first portion is provided with teeth that mesh with the gear 20. The limiter 1000 is fixed to the side wall of the track 100 and is located at the end of the track 100 so that the width of the two ends of the track 100 is smaller than the width of the first portion to prevent the rack 21 from falling off the track 100.

[0081] Furthermore, the rack 21 includes a second portion connected to the first portion and partially located between the two stoppers 1000. To prevent the teeth on the first portion from directly colliding with the stoppers 1000, the second portion is provided with a mating piece that contacts the stoppers 1000. The mating piece is also located between the two stoppers 1000 and on one side of the first portion. When the rack 21 moves and the mating piece on the second portion contacts the stoppers 1000, the rack 21 stops moving.

[0082] Therefore, regardless of whether the gear 20 rotates forward or backward, the rack 21 will not move out of the track 100. The limiting member 1000 can be a columnar limiting column having a length so that the width of the two end portions of the track 100 is smaller than the width of the first part.

[0083] On the basis of the above embodiment, in order to prevent the locking assembly 2 and the pallet assembly 1 from being exposed, the spare tire locking mechanism is further provided with: a cover 3, which is arranged on the outside of the operating unit and is detachably connected to the pallet assembly 1, and a through slot 33 for the operating unit to pass through is provided on the cover 3. The cover 3 is detachably connected to the base 10, and covers the base 10 and the locking assembly 2, wherein the detachable connection method can be screw connection, riveting, etc. By providing a cover body to cover the locking assembly 2 and the pallet assembly 1, it is possible to prevent external dust from falling onto the gear 20 and the rack 21 and affecting the transmission effect of the gear 20 and the rack 21, and it is also possible to protect the locking assembly 2 and the pallet assembly 1, thereby extending the service life of the locking assembly 2 and the pallet assembly 1.

[0084] The cover body can be provided as an integral structure, or, when the cover body covers the locking assembly 2 and the pallet assembly 1, a cover 3 is provided to facilitate the inspection and replacement of the locking assembly 2 or the pallet assembly 1, including an inner cover 30 and an outer cover 31. The inner cover 30 is connected to the middle of the top of the outer cover 31, and the inner cover 30 and the outer cover 31 are provided with a detachable connection. When the locking assembly 2 or the pallet assembly 1 needs to be inspected or replaced, the inner cover 30 can be removed according to the actual situation, or the cover body can be completely removed from the pallet assembly 1.

[0085] On the basis of the above embodiment, in order to reflect the distance between the two fixing bolts 221 when the locking assembly 2 moves (the distance between the two fixing bolts 221 must be consistent with the pitch circle diameter of the spare tire 7 to match), the spare tire locking mechanism is also provided to include: an indicator assembly 4, which is connected to the operating unit and is used to determine the moving position of the spare tire tray 22.

[0086] Because of the indicator assembly 4, an opening is provided in the center of the top of the cover 3, regardless of whether the cover 3 is a one-piece or split structure, for the indicator assembly 4 to pass through. Since the chain 6 is connected to the connecting column 110, the connecting column 110 also has this opening. Whether a stud screw is used to drive the spare tire tray 22 or a rack 21 is used to drive the tray, through slots 33 are required on both sides of the cover body to accommodate the stud screw or rack 21.

[0087] The indicator assembly 4 includes a pointer 40 and scale markings 41. One end of the pointer 40 is connected to the operating unit, and the other end is in contact with the surface of the cover 3. The scale markings 41 are provided on the surface of the cover 3. Specifically, one end of the pointer 40 is fixed to the gear 20. When the gear 20 rotates, the other end of the pointer 40 slides on the surface of the cover 3. The scale markings 41 are provided on the surface of the cover 3. When the gear 20 rotates to different angles, the other end of the pointer 40 points to different scale markings 41, indicating the different sizes of spare tires 7 that the device supports.

[0088] Furthermore, a track line is provided on the cover 3, with a scale mark 41 located on one side of the track line. A notch 32 is provided on the cover 3, and the notch 32 is located on the track line. A pointer 40 is provided, comprising: a connecting rod 400 and a pointer body 401, wherein the connecting rod 400 is fixedly connected to the operating unit; one end of the pointer body 401 is hinged to the connecting rod 400, and the other end is slidably connected to the surface of the cover 3 along the track line.

[0089] When the cover body includes an inner cover 30 and an outer cover 31, half grooves are formed at intervals along the circumference of the inner cover 30 at the top end of the outer side of the inner cover 30, and half grooves are also formed at intervals along the circumference of the outer cover 31 at the top end of the inner side of the outer cover 31. When the inner cover 30 and the outer cover 31 are connected, the half grooves on the inner cover 30 correspond to the half grooves on the outer cover 31 one by one, forming a plurality of notches 32;

[0090] A scale mark 41 is set on one side of each slot 32. When the other end of the pointer body 401 moves to the slot 32, since the pointer body 401 is hinged to the connecting rod 400, the other end of the pointer body 401 falls due to its own gravity and is inserted into the slot 32. If the gear 20 is manually driven to rotate, when the other end of the pointer body 401 is inserted into the slot 32, the pointer body 401 cooperates with the slot 32 to provide a resistance to the rotation of the gear 20, so as to remind the operator that the distance between the two fixing bolts 221 at this time matches one model of the spare tire 7. The operator determines whether it is necessary to continue to rotate the gear 20 by checking the scale mark 41 on one side of the slot 32. When the gear 20 continues to rotate, the other end of the pointer body 401 inserted into the slot 32 extends out from the slot 32 and continues to slide on the surface of the cover 3 until it is inserted into the next slot 32. In order to facilitate the operator's work, a mark is set on the surface of the cover 3, and the mark is used to show the matching relationship between different distances between the two fixing bolts 221 and different models of spare tires 7.

[0091] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0092] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0093] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A spare tire locking mechanism, characterized in that: It includes: Support plate assembly (1); A locking assembly (2), the locking assembly (2) comprising an operating unit and two spare tire trays (22), the operating unit being detachably connected to the support plate assembly (1), the two spare tire trays (22) being arranged opposite to each other on both sides of the operating unit, the operating unit being detachably connected to the spare tire trays (22), and the operating unit driving the two spare tire trays (22) to move so that the relative distance between the two spare tire trays (22) is adjustable; The operating unit includes: A gear (20), wherein the gear (20) is detachably connected to the support plate assembly (1); Two racks (21), the two racks (21) are arranged opposite to each other on both sides of the gear (20) and are transmission-connected to the gear (20), the racks (21) are slidably connected to the support plate assembly (1), and one end of the rack (21) is detachably connected to the spare tire tray (22) via a mounting member; The spare tire locking mechanism also includes: A cover (3), the cover (3) is arranged outside the operating unit and is detachably connected to the support plate assembly (1), and a through slot (33) for the operating unit to pass through is formed on the cover (3); The spare tire locking mechanism also includes: An indicating component (4) is connected to the operating unit and is used to determine the moving position of the spare tire tray (22).

2. The spare tire locking mechanism according to claim 1, wherein: The support plate assembly (1) comprises: A base (10), wherein two rails (100) are provided at the top of the base (10), and the two racks (21) are respectively slidably connected to the inside of the two rails (100); A connecting member (11) is fixed to the top of the base (10) and is located between the two rails (100). The connecting member (11) is detachably connected to the gear (20).

3. The spare tire locking mechanism according to claim 2, wherein: Both ends of the track (100) are fixedly connected to limiting members (1000), and the rack (21) includes a first part, the first part is engaged with the gear (20), and the first part is located between the two limiting members (1000).

4. The spare tire locking mechanism according to claim 3, characterized in that: The rack (21) further includes a second portion, the second portion is connected to the first portion, and part of the second portion is located between the two limiting members (1000).

5. The spare tire locking mechanism according to claim 1, wherein: The indicating component (4) comprises: A pointer (40), one end of the pointer (40) is connected to the operating unit, and the other end is in contact with the surface of the cover (3); A scale mark (41) is provided on the surface of the cover (3).

6. The spare tire locking mechanism according to claim 5, characterized in that: The cover (3) is provided with a track line, the scale mark (41) is located on one side of the track line, and the cover (3) is provided with a notch (32), the notch (32) is located on the track line; The pointer (40) includes: A connecting rod (400), the connecting rod (400) being fixedly connected to the operating unit; A pointer body (401) is hinged at one end to the connecting rod (400), and the other end is slidably connected to the surface of the cover (3) along a trajectory line.

7. A spare tire lifter, characterized in that: It includes: The spare tire locking mechanism according to any one of claims 1 to 6; A spare tire lifter body (5) is connected to the spare tire locking mechanism via a chain (6).

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