Improved structure of spare tire cover

Abstract

The utility model relates to an improved structure of a spare tire cover, which comprises a cover cap, an outer cover for protecting a tire and a lockset, the outer cover is a vertically through annular outer cover, a notch is arranged on the cover wall of the outer cover, a first connecting part is formed at one end of the outer cover close to the notch, and a second connecting part is formed at the other end of the outer cover close to the notch. The diameter of the outer cover is adjustable; by designing the outer cover with the adjustable diameter and combining the outer baffle ring and the inner baffle ring, the spare tire cover can adapt to tires with different diameters. Due to the flexibility, one spare tire cover can be suitable for various vehicle types.

Description

Technical Field

[0001] The utility model relates to an improved structure of a spare tire cover. Background Art

[0002] In the existing spare tire cover design, the spare tire cover is usually composed of a cover, an outer cover to protect the tire, and a lock. The outer cover is usually of fixed size and does not have an adjustable function to accommodate tires of different sizes. In addition, the lock structure in the prior art is often complex, including multiple components such as a lock hook, a lock slot, a mounting bracket and other locking mechanisms, which not only increases the manufacturing cost, but also makes the operation process cumbersome and time-consuming.

[0003] This complex lock structure is prone to failure in actual use, especially in emergency situations when the spare tire needs to be quickly replaced, which may delay time due to inconvenient operation or lock failure. In addition, due to the large number of lock parts, its reliability and durability may also be affected, thereby reducing the overall service life and safety of the spare tire cover. Utility Model Content

[0004] The utility model aims to provide an improved spare tire cover structure which simplifies the lock design, provides a simpler and more reliable locking or unlocking method, and introduces an outer cover with adjustable diameter to adapt to tires of different diameters.

[0005] The purpose of the utility model is achieved in this way:

[0006] An improved spare tire cover structure comprises a cover, an outer cover for protecting a tire and a lock, wherein the outer cover is an annular outer cover that passes through from top to bottom, a cover wall of the outer cover is provided with a notch, a first connecting portion is formed near the notch at one end of the outer cover, and a second connecting portion is formed near the notch at the other end of the outer cover, so that the outer cover forms an outer cover with adjustable diameter;

[0007] The outer end of the outer cover is bent toward the center of the outer port to form an outer retaining ring, so that the diameter of the outer retaining ring is smaller than the diameter of the outer cover;

[0008] The inner end of the outer cover is bent toward the center of the inner port to form an inner retaining ring, so that the diameter of the inner retaining ring is smaller than the diameter of the outer cover;

[0009] The diameter of the cover is smaller than the diameter of the outer cover, and the diameter of the cover is larger than the diameter of the outer retaining ring and the diameter of the inner retaining ring respectively;

[0010] The lock also includes a first mounting bracket, a cover plate, a lock core and a position adjustment device, wherein the position adjustment device includes a connecting plate, a screw and a nut, wherein the connecting plate is provided with a screw sliding groove for facilitating the movement of the screw, and the nut is arranged in the screw sliding groove;

[0011] One end of the screw rod extends into the screw rod sliding groove and is threadedly connected to the nut, and the other end of the screw rod extends out of the screw rod sliding groove and is connected to the locking hook. The rotation of the nut drives the screw rod to rotate, and the rotation of the screw drives the locking hook to move;

[0012] The first mounting bracket is fixed on the first connecting portion, the connecting plate is hinged on the first mounting bracket, the connecting plate rotates with the hinge as the rotation center, and the rotation of the connecting plate drives the position adjustment device and the locking hook to rotate synchronously, so that the locking hook enters or leaves the locking slot;

[0013] The cover plate is provided with a lock core installation opening, the lock core is arranged at the lock core installation opening, and a lock block for locking or unlocking the screw is connected to the lock core of the lock core;

[0014] The cover plate is hinged on the first mounting bracket, and the cover plate rotates with the hinge as the rotation center, and the cover plate rotates so that the cover plate covers or exposes the nut, the screw and the lock hook;

[0015] The second connecting portion is provided with locking grooves at intervals, and the locking grooves and the outer cover between the locking grooves form a hooking portion;

[0016] The lock hook of the lock passes through the corresponding lock slot and abuts against the hooking portion, so that the first connecting portion and the second connecting portion are connected through the lock, thereby adjusting the diameter of the outer cover so that the outer cover clamps the tire of the corresponding diameter.

[0017] Improved adjustability: By designing an outer cover with adjustable diameter, combined with an outer and inner retaining ring, the spare tire cover can adapt to tires of different diameters. This flexibility allows one spare tire cover to be suitable for a variety of vehicle models.

[0018] Easy to operate: The design of the lock includes a position adjustment device, which adjusts the position of the lock hook by simply rotating the nut to drive the screw to move, adapting to spare tires of different sizes and increasing the applicability of the spare tire cover. Since the user can easily adjust the diameter of the outer cover and lock it, the operation is intuitive and labor-saving, greatly simplifying the loading and unloading process.

[0019] Enhanced security: The setting of the lock core provides additional security. The design of the lock cylinder and the lock block ensures that the outer cover is not easily opened illegally when locked, protecting the spare tire from external damage.

[0020] Stable structure: The hinged cover not only protects the screw and nut, but also increases the structural stability of the entire lock. The cover is also convenient and quick to open and close, and easy to maintain and inspect.

[0021] Improve overall aesthetics: The cover can cover the nuts, screws and lock hooks when not in operation, making the appearance of the entire spare tire cover neater and more beautiful, without affecting the overall appearance design of the vehicle, and meeting the user's requirements for aesthetics.

[0022] Improve locking stability: The hook design provides an additional support point for the lock hook. When the lock hook passes through the lock slot and rests on the hook, the lock hook is firmly supported to prevent it from shaking or loosening during the locking process, thereby improving the stability and reliability of the locking.

[0023] Simplified operation process: When locking and unlocking, the user only needs to pass the lock hook through the lock slot and rest it on the hook part. The operation is simple and convenient, which reduces the operation steps, improves the convenience and efficiency of use, and meets the user's demand for quick operation.

[0024] The purpose of the utility model can also be solved by the following technical measures:

[0025] Furthermore, the locking block is provided with a screw accommodating cavity, and the locking block has an opening corresponding to the position of the screw accommodating cavity. The screw passes through the opening and enters the screw accommodating cavity. When the screw and the opening are in an aligned state, the screw and the locking block are in an unlocked state. When the lock core drives the locking block to rotate, the opening and the screw are in a misaligned state, and the screw and the locking block are in a locked state.

[0026] Enhanced anti-theft performance: When the lock block and the screw are misaligned, the lock block locks the screw and the user cannot rotate the cover, thus unable to expose the nut for any adjustment. This design effectively prevents unauthorized persons from trying to unlock the spare tire cover, significantly improving anti-theft performance.

[0027] Improved operational convenience and safety: Users can use the key to rotate the lock core. When the screw and the opening are aligned, the lock block is unlocked to expose the nut. Users can easily rotate the nut to adjust the position of the lock hook to lock or unlock the lock hook. This design simplifies the operating steps and ensures the safety and convenience of operation.

[0028] Prevent misoperation: The misalignment and alignment design between the lock block and the screw ensures that only when the key is operated correctly and the screw and the opening are aligned, the user can rotate the cover for further operation, avoiding the potential safety hazards and troubles caused by misoperation and improving the reliability of the system.

[0029] Protect the screw and nut: When locked, the cover cannot rotate, and the nut and screw are covered by the cover to prevent dust, rain and other external factors from corroding the nut and screw, reducing wear and damage and extending the service life of components.

[0030] Improve user experience: Users can adjust the lock hook position and change the locking state by key operation. The operation is simple and quick, which improves user experience and convenience, and meets the user's dual needs for ease of use and safety.

[0031] Furthermore, the screw rod sliding groove is provided with a nut installation cavity for installing a nut, the nut is movably placed in the nut installation cavity, and the nut and the screw rod sliding groove are communicated.

[0032] Improved operational convenience: The nut installation cavity design allows the nut to move freely inside it, and the user can more easily rotate the nut to adjust the position of the lock hook, which simplifies the operation steps, improves ease of use, and reduces the user's effort during operation.

[0033] Enhanced adjustment accuracy: The design of the nut installation cavity ensures the stable movement of the nut in the screw sliding groove, prevents the nut from shifting during rotation, improves the accuracy of adjusting the lock hook position, and ensures the accuracy of locking and unlocking operations.

[0034] Extend the service life of the nut and screw: The nut mounting cavity ensures that the nut is evenly supported and protected when rotating, reducing the friction and wear between the nut and the screw, extending the service life of the nut and the screw, and improving the durability of the lock.

[0035] Provide good user experience: Users can easily rotate the nut during operation without using excessive force, which improves user experience and comfort and meets users' needs for easy operability.

[0036] Improve operational efficiency: Users can complete the nut rotation operation more quickly, reducing the time for adjusting the lock hook position, improving operational efficiency, and meeting users' needs for fast operation.

[0037] The beneficial effects of the utility model are as follows:

[0038] The utility model discloses a lock device comprising a position adjusting device, which drives a screw rod to move by simply rotating a nut so as to adjust the position of a lock hook, thereby adapting to spare tires of different sizes and increasing the application range of the spare tire cover. Since the user can easily adjust the diameter of the outer cover and lock it, the operation is intuitive and labor-saving, thereby greatly simplifying the loading and unloading process.

[0039] The utility model adopts the hooking part design to provide an additional support point for the lock hook. When the lock hook passes through the lock slot and abuts against the hooking part, the lock hook is firmly supported to prevent it from shaking or loosening during the locking process, thereby improving the stability and reliability of the locking.

[0040] The utility model discloses that the cover plate can shield the nut, the screw rod and the lock hook when not in operation, so that the appearance of the entire spare tire cover is more neat and beautiful, does not affect the overall appearance design of the vehicle, and meets the user's requirements for aesthetics.

[0041] In the utility model, when the lock block and the screw rod are in a misaligned state, the lock block locks the screw rod, and the user cannot rotate the cover plate, thereby being unable to expose the nut for any adjustment. This design effectively prevents unauthorized persons from attempting to unlock the spare tire cover, significantly improving the anti-theft performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a spare tire cover structure installed on a car tailgate.

[0043] Figure 2 This is a schematic diagram of the spare tire cover structure installed on the tailgate of a car from another angle.

[0044] Figure 3 This is a schematic diagram of the spare tire cover (locked state).

[0045] Figure 4 This is a schematic diagram of the spare tire cover (with the cover open).

[0046] Figure 5 This is a schematic diagram of the spare tire cover (the rotation of the nut drives the lock hook to leave the hook portion).

[0047] Figure 6 This is a schematic diagram of the spare tire cover (the decorative panel is removed, the bolts are removed and the cover is taken out)

[0048] Figure 7 This is a schematic diagram of the spare tire cover from another angle (the cover is separated).

[0049] Figure 8 This is a schematic diagram of the spare tire cover from another angle (the cover is separated).

[0050] Fig. 9 This is a schematic diagram of the spare tire cover (the cover, outer cover and tailgate of the car are separated).

[0051] Fig.10 This is a schematic diagram of the spare tire cover from another angle (the cover, outer cover and tailgate of the car are separated).

[0052] Fig.11 This is a schematic diagram of the spare tire cover (the cover, outer cover, tire and tailgate are separated).

[0053] Fig.12 A schematic diagram of inserting the bracket of the spare tire cover into the positioning cavity.

[0054] Fig.13 Schematic diagram of the separation of the bracket and the positioning cavity of the spare tire cover.

[0055] Fig.14 Schematic diagram of the lock for the spare tire cover.

[0056] Fig.15This is a schematic diagram of the lock of the spare tire cover from another angle (the screw is placed in the screw accommodating cavity, and the screw is aligned with the opening).

[0057] Fig.16 This is a schematic diagram of the lock of the spare tire cover from another angle (the screw is placed in the screw accommodating cavity, and the screw and the opening are misaligned).

[0058] Fig.17 This is a schematic diagram of the lock for the spare tire cover (with the cover open). DETAILED DESCRIPTION

[0059] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0060] Example, combined with Figures 1 to 17 As shown, a spare tire cover structure installed on a car tailgate includes a car tailgate 1, a spare tire cover 2, a tire 3 and a bolt 10, wherein the spare tire cover 2 includes a cover 4, an outer cover 5 for protecting the tire 3 and a lock 7, the car tailgate 1 is provided with a tire connection seat 11 and a bracket 12 for locking the tire 3, and the head of the bracket 12 is provided with a camera 13 for connecting to the vehicle-mounted system of the car;

[0061] The outer cover 5 is an annular outer cover that passes through from top to bottom. A notch 51 is formed on the outer cover wall of the outer cover 5. A first connecting portion 52 is formed near the notch 51 at one end of the outer cover 5, and a second connecting portion 53 is formed near the notch 51 at the other end of the outer cover 5, so that the outer cover 5 forms an outer cover 5 with adjustable diameter.

[0062] The outer end of the outer cover 5 is bent toward the center of the outer port thereof to form an outer retaining ring 54, so that the diameter of the outer retaining ring 54 is smaller than the diameter of the outer cover 5;

[0063] The inner end of the outer cover 5 is bent toward the center of the inner port thereof to form an inner retaining ring 55, so that the diameter of the inner retaining ring 55 is smaller than the diameter of the outer cover 5;

[0064] The diameter of the cover 4 is smaller than the diameter of the outer cover 5, and the diameter of the cover 4 is larger than the diameter of the outer retaining ring 54 and the diameter of the inner retaining ring 55 respectively;

[0065] The lock 7 is arranged on the first connecting portion 52, and the second connecting portion 53 is provided with locking grooves 531 at intervals;

[0066] The cover 4 is provided with a camera installation opening 41, and a positioning cavity 6 is provided on the back of the cover 4 corresponding to the position of the camera installation opening 41, and the shape of the positioning cavity 6 matches the shape of the head of the bracket 12;

[0067] The cover 4 is provided with a bolt hole 42 next to the camera mounting opening 41, and the head of the bracket 12 is provided with a connecting ear 121;

[0068] The tire 3 is placed on the car tailgate 1, and the tire connection seat 11 and the tire 3 are locked;

[0069] The outer cover 5 is sleeved on the tire 3, and the cover 4 is placed in the inner cavity of the outer cover 5, with one end of the cover 4 resting on the tire 3, and the other end of the cover 4 resting on the outer retaining ring 54;

[0070] The head of the bracket 12 is inserted into the positioning cavity 6, and the camera 13 extends out of the camera installation opening 41;

[0071] The lock hook 74 of the lock 7 passes through the corresponding lock slot 531 to hook the second connection part 53, so that the first connection part 52 and the second connection part 53 are connected through the lock 7, thereby adjusting the diameter of the outer cover 5 so that the outer cover 5 clamps the tire 3 of the corresponding diameter;

[0072] The bolt passes through the bolt hole 42 to lock the connecting ear 121 .

[0073] Furthermore, it also includes a decorative cover 9, the camera installation opening 41 is opened at the center position of the cover 4, and a decorative cover installation cavity 91 is opened on the surface of the cover 4 next to the camera installation opening 41, and the decorative cover installation cavity 91 is opened with the bolt hole 42, and the decorative cover 9 is detachably arranged on the decorative cover installation cavity 91 to cover the bolt hole 42.

[0074] Furthermore, a rubber pad 411 is provided on the inner wall of the camera installation opening 41 .

[0075] Furthermore, the outer retaining ring 54 , the inner retaining ring 55 , the first connecting portion 52 and the second connecting portion 53 are sleeved with a rubber strip 511 .

[0076] Furthermore, a first positioning piece 61 is provided on the back side of the cover 4 above the camera installation opening 41 , and a second positioning piece 62 is provided on the back side of the cover 4 below the camera installation opening 41 . The first positioning piece 61 and the second positioning piece 62 surround the positioning cavity 6 .

[0077] Furthermore, the first positioning piece 61 is bent upward to form a first guide portion 611 , which is inclined toward the positioning cavity 6 , and the second positioning piece 62 is bent downward to form a second guide portion 621 , which is inclined toward the positioning cavity 6 .

[0078] Furthermore, a film 63 is disposed on the outer wall of the first positioning piece 61 facing the positioning cavity 6 , and a film 63 is disposed on the outer wall of the second positioning piece 62 facing the positioning cavity 6 .

[0079] Furthermore, the bolt hole 42 is provided on the back side of the cover 4 beside the positioning insertion cavity 6 , and the head of the bracket 12 is provided with a connecting ear 121 at a position corresponding to the bolt hole 42 .

[0080] Furthermore, the bracket 12 has a built-in line channel for the line to pass through, the head of the bracket 12 has a wiring port corresponding to the line channel, and the tail of the bracket has a wiring port corresponding to the line channel.

[0081] Furthermore, support blocks 44 for abutting against the tire 3 are arranged at intervals on the back side of the cover 4 along its circumferential direction, and felt 45 for abutting against the wheel hub is arranged at intervals on the back side of the cover 4 along its circumferential direction, and the support blocks 44 are located outside the felt 45.

[0082] Furthermore, the lock 7 further comprises a first mounting bracket 71, a cover plate 72, a lock core 73 and a position adjustment device 8, wherein the position adjustment device 8 comprises a connecting plate 81, a screw 82 and a nut 83, wherein the connecting plate 81 is provided with a screw sliding groove 811 for facilitating the movement of the screw 82, and the nut 83 is arranged in the screw sliding groove 811;

[0083] One end of the screw rod 82 extends into the screw rod sliding groove 811 and is threadedly connected to the nut 83, and the other end of the screw rod 82 extends out of the screw rod sliding groove 811 and is connected to the locking hook 74. The rotation of the nut 83 drives the screw rod 82 to rotate, and the rotation of the screw rod 82 drives the locking hook 74 to move;

[0084] The first mounting bracket 71 is fixed on the first connecting portion 52, and the connecting plate 81 is hinged on the first mounting bracket 71. The connecting plate 81 rotates around the hinge as the rotation center. The rotation of the connecting plate 81 drives the position adjustment device 8 and the locking hook 74 to rotate synchronously, so that the locking hook 74 enters or leaves the locking groove 531;

[0085] The cover plate 72 is provided with a lock core installation opening 721, the lock core 73 is arranged at the lock core installation opening 721, and the lock core of the lock core 73 is connected with a lock block 75 for locking or unlocking the screw rod 82;

[0086] The cover plate 72 is hinged on the first mounting bracket 71 , and the cover plate 72 rotates with the hinge as the rotation center. The cover plate 72 rotates so that the cover plate 72 covers or exposes the nut 83 , the screw rod 82 and the locking hook 74 .

[0087] Furthermore, the locking block 75 is provided with a screw accommodating cavity 751, and the locking block 75 is provided with an opening 752 at a position corresponding to the screw accommodating cavity 751. The screw 82 passes through the opening 752 and enters the screw accommodating cavity 751. When the screw 82 and the opening 752 are in an aligned state, the screw 82 and the locking block 75 are in an unlocked state. When the lock core 73 drives the locking block 75 to rotate, the opening 752 and the screw 82 are in a misaligned state, and the screw 82 and the locking block 75 are in a locked state.

[0088] Furthermore, the screw rod sliding groove 811 is provided with a nut installation cavity 812 for installing the nut 83 , the nut 83 is movably placed in the nut installation cavity 812 , and the nut 83 and the screw rod sliding groove 811 are in communication.

[0089] Furthermore, the locking groove 531 and the outer cover 5 between the locking groove 531 form a hooking portion 532 , and the locking hook 74 passes through the locking groove 531 and abuts against the hooking portion 532 .

[0090] Steps for removing the tire 3 from the spare tire cover 2:

[0091] Unlock lock 7:

[0092] Find the cover plate 72 of the lock 7, insert the key into the lock core 73 and rotate it, and the lock core 73 drives the lock block 75 to rotate through the lock pin. When the opening 752 of the lock block 75 is aligned with the screw 82, the lock block 75 is in an unlocked state.

[0093] Next, the cover plate 72 is rotated to a position where the nut 83 , the screw rod 82 and the locking hook 74 are exposed.

[0094] Next, the nut 83 is rotated to adjust the position of the locking hook 74 so that the locking hook 74 is separated from the locking groove 531 and the hooking portion 532 .

[0095] When the locking hook 74 is completely separated from the locking groove 531 , the diameter of the outer cover 5 is adjusted to release the clamping of the tire 3 .

[0096] Removal of cover 72:

[0097] Remove the decorative cover 9, find the bolt holes 42 on the back of the cover 4, and use a suitable tool to remove the bolts.

[0098] After the bolts are removed, the cover plate 72 is gently pulled to disengage it from the head of the bracket 12 and the positioning insertion cavity 6.

[0099] After the cover plate 72 is detached, ensure that the connection between the camera 13 and the head of the bracket 12 is intact, and do not pull the line of the camera 13.

[0100] Removing the outer cover 5:

[0101] After loosening the outer cover 5, carefully remove the outer cover 5 from the tire 3 and place it in a safe place.

[0102] Removing tire 3:

[0103] Use a tire 3 wrench to loosen the bolts on the tire connecting seat 11, completely remove the bolts and take out the tire 3 of the spare tire cover 2.

[0104] Steps for installing tire 3 on spare tire cover 2:

[0105] Install tire 3:

[0106] The tire 3 is placed on the tire connection seat 11 of the automobile tailgate 1 , and the bolts on the tire connection seat 11 are locked using a tire 3 wrench, so that the bolts lock the tire 3 and the tire connection seat 11 .

[0107] Install the outer cover 5 and the cover 4:

[0108] First, the outer cover 5 is placed on the tire 3, and then the cover 4 is placed in the inner cavity of the outer cover 5, so that one end of the cover 4 abuts against the tire 3, and the other end of the cover 4 abuts against the outer retaining ring 54;

[0109] Next, insert the head of the bracket 12 into the positioning cavity 6 until the camera 13 extends out of the camera installation opening 41;

[0110] Next, the nut 83 is rotated to adjust the position of the lock hook 74 so that the lock hook 74 is hooked with the corresponding hooking portion 532 to clamp the tire 3;

[0111] Next, insert the key into the lock core 73 and rotate it. The lock core 73 drives the lock block 75 to rotate through the lock pin. When the opening 752 of the lock block 75 is misaligned with the screw rod 82, the lock block 75 is in a locked state, so that the cover plate 72 cannot rotate.

[0112] Fixed cover 4:

[0113] The bolts are passed through the bolt holes 42 of the cover 4 to lock the connecting ears 121 of the bracket 12 so that the cover 4 locks the automobile tailgate 1 , and finally the decorative cover 9 is arranged on the decorative cover installation cavity 91 to cover the bolt holes 42 .

Claims

1. An improved spare tire cover structure, comprising a cover, an outer cover for protecting the tire and a lock, characterized in that: The outer cover is an annular outer cover that penetrates from top to bottom, and a notch is formed on the cover wall of the outer cover. A first connection portion is formed near the notch at one end of the outer cover, and a second connection portion is formed near the notch at the other end of the outer cover, so that the outer cover forms an outer cover with adjustable diameter; The outer end of the outer cover is bent toward the center of the outer port to form an outer retaining ring, so that the diameter of the outer retaining ring is smaller than the diameter of the outer cover; The inner end of the outer cover is bent toward the center of the inner port to form an inner retaining ring, so that the diameter of the inner retaining ring is smaller than the diameter of the outer cover; The diameter of the cover is smaller than the diameter of the outer cover, and the diameter of the cover is larger than the diameter of the outer retaining ring and the diameter of the inner retaining ring respectively; The lock comprises a lock hook, a first mounting bracket, a cover plate, a lock core and a position adjustment device, wherein the position adjustment device comprises a connecting plate, a screw and a nut, wherein the connecting plate is provided with a screw sliding groove for facilitating the movement of the screw, and the nut is arranged in the screw sliding groove; One end of the screw rod extends into the screw rod sliding groove and is threadedly connected to the nut, and the other end of the screw rod extends out of the screw rod sliding groove and is connected to the locking hook. The rotation of the nut drives the screw rod to rotate, and the rotation of the screw drives the locking hook to move; The first mounting bracket is fixed on the first connecting portion, the connecting plate is hinged on the first mounting bracket, the connecting plate rotates with the hinge as the rotation center, and the rotation of the connecting plate drives the position adjustment device and the locking hook to rotate synchronously, so that the locking hook enters or leaves the locking slot; The cover plate is provided with a lock core installation opening, the lock core is arranged at the lock core installation opening, and a lock block for locking or unlocking the screw is connected to the lock core of the lock core; The cover plate is hinged on the first mounting bracket, and the cover plate rotates with the hinge as the rotation center, and the cover plate rotates so that the cover plate covers or exposes the nut, the screw and the lock hook; The second connecting portion is provided with locking grooves at intervals, and the locking grooves and the outer cover between the locking grooves form a hooking portion; The lock hook of the lock passes through the corresponding lock slot and abuts against the hooking portion, so that the first connecting portion and the second connecting portion are connected through the lock, thereby adjusting the diameter of the outer cover so that the outer cover clamps the tire of the corresponding diameter.

2. The improved spare tire cover structure according to claim 1, characterized in that: The locking block is provided with a screw accommodating cavity, and the locking block has an opening at the position corresponding to the screw accommodating cavity. The screw passes through the opening and enters the screw accommodating cavity. When the screw and the opening are in an aligned state, the screw and the locking block are in an unlocked state. When the lock core drives the locking block to rotate, the opening and the screw are in a misaligned state, and the screw and the locking block are in a locked state.

3. The improved spare tire cover structure according to claim 1 is characterized in that: The screw rod sliding groove is provided with a nut installation cavity for installing a nut, the nut is movably placed in the nut installation cavity, and the nut and the screw rod sliding groove are communicated.

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