A roller skate shell with independently adjustable length and width

Abstract

This utility model discloses an independently adjustable length and width roller skate shell, relating to the field of roller skate accessories, aiming to solve the problems of unreliable coupling and locking in traditional shell length and width adjustment. It includes a sole shell and a sliding toe cap, the sliding toe cap being slidably mounted on the sole shell. Independent length and width adjustment mechanisms are provided between the two. The length adjustment mechanism achieves stable locking and convenient operation through a meshing structure of positioning grooves and a pressing locking component, combined with a return spring. The width adjustment mechanism divides the forefoot into a main body and a contraction body, utilizing a cross-shaped sliding groove and contraction groove in conjunction with a width adjustment unit to drive width changes, and includes a crumple groove to provide deformation cushioning. This utility model, through its separate adjustment mechanism, achieves independent, precise, and stable adjustment of the length and width of the roller skate shell, significantly improving the adaptability, safety, and user experience of roller skates.

Description

Technical Field

[0001] This utility model relates to the field of roller skate accessories, and in particular to a roller skate shell with independently adjustable length and width. Background Technology

[0002] As a key structural component of roller skates, the size adaptability of the skate shell directly affects the user's wearing experience and sports safety. Currently, most roller skate shell products on the market suffer from systemic defects in length and width adjustment, making it difficult to adapt to the differences in foot shapes among users. Specifically, most existing products couple the length and width adjustment mechanisms in their structural design, inevitably interfering with the adjustment of one parameter and failing to achieve truly independent and precise control. Regarding length adjustment, common locking mechanisms are often unreliable, prone to retraction or displacement after adjustment, posing significant safety hazards; furthermore, locking and unlocking operations are usually cumbersome, resulting in a poor user experience. The sliding guide structure between the toe and the sole shell also lacks sufficient rigidity and stability, making it prone to misalignment or even derailment under lateral impact or frequent sliding, further affecting the overall structural stability and lifespan.

[0003] In terms of width adjustment, traditional roller skate shells also fall short of expectations. Their adjustment mechanisms often rely on simple mechanical expansion or material elastic deformation, resulting in limited adjustment range and a lack of effective positioning mechanisms. This makes it difficult to maintain stable width after adjustment, leading to loosening or slippage. Furthermore, width locking components are often complex in structure, inconvenient to operate, and lack sufficient locking force, failing to maintain the preset size under high-intensity exercise conditions. This severely limits the applicable scenarios and comfort of roller skates. These structural and functional limitations collectively make traditional roller skate shells unable to meet the increasingly diverse needs of users, especially among teenagers in their growth stage or users with special foot shapes.

[0004] Therefore, existing roller skate shells urgently need further optimization and improvement. Utility Model Content

[0005] The purpose of this invention is to provide a roller skate shell with independent, stable, and convenient length and width adjustment functions, so as to fundamentally improve the product's adaptability, safety, and user experience.

[0006] To achieve the above objectives, this utility model adopts the following solution: a roller skate shell with independently adjustable length and width, comprising a sole shell and a sliding toe cap. The sliding toe cap is slidably mounted on the sole shell. An independently operable length adjustment mechanism and a width adjustment mechanism are provided between the sole shell and the sliding toe cap. The length adjustment mechanism is used to lock or unlock the sliding of the sliding toe cap relative to the sole shell, thereby adjusting the overall length of the shell. The width adjustment mechanism is located at the forefoot portion of the sliding toe cap, used to drive the forefoot portion to undergo elastic deformation to change its width, and to lock it in place. In this solution, the length adjustment mechanism and the width adjustment mechanism are set independently. Length adjustment is achieved through the sliding of the sliding toe cap relative to the sole shell, while width adjustment focuses on the elastic deformation of the forefoot portion of the sliding toe cap. This fundamentally breaks the limitation of traditional products where length and width adjustments are coupled, achieving independent and precise control of both for the first time, meeting the personalized needs of users with different foot shapes for size adaptation.

[0007] Specifically, the length adjustment mechanism includes a positioning groove with positioning protrusions on the heel of the sliding toe, the positioning protrusions being spaced apart on the same side of the positioning groove in the front-back direction, and a pressing locking component on the heel of the sole shell, one end of which is exposed on one side of the sole shell to form an operating part, and the other end is connected to the sole shell through an elastic element. The pressing locking component is provided with locking protrusions that mesh with the positioning protrusions. Through the meshing structure of the positioning groove and the protrusions of the pressing locking component, and with the preload provided by the return spring, the safety hazards of easy retraction and displacement of the traditional length locking mechanism are solved. The width adjustment mechanism includes dividing the forefoot of the sliding toe into a main body connected to the heel of the sliding toe and a retractable body that can move left and right relative to the main body. A strip-shaped sliding groove is provided on the retractable body along the front-to-back direction, and a retractable groove is provided laterally on the sole shell in a cross shape with the sliding groove. A width adjustment unit is provided between the sliding groove and the retractable groove to drive the retractable body closer to or further away from the main body. By dividing the forefoot into the main body and the retractable body, and through the cross-shaped design of the sliding groove and the retractable groove, combined with the width adjustment unit driving the retractable body to move, the limitation of traditional width adjustment relying on mechanical expansion or material elasticity is effectively overcome.

[0008] As a further embodiment of this utility model, the pressing and locking component includes a button groove laterally provided on the heel of the sole shell. One end of the button groove passes through one side of the sole shell to form an opening. A length locking button is movably mounted in the button groove. One end of the button lock button extends out of the button groove through the opening to form the operating part. The other end abuts against the inner wall of the button groove through an elastic element. The elastic element is a return spring, and its two ends press against the tail end of the length locking button and the inner wall of the button groove, respectively, to provide a preload force to reset the length locking button. The length locking button has an upwardly protruding locking protrusion on its top surface near the tail end. The locking protrusion extends into the positioning tooth groove, and the locking tooth is located on the side of the locking protrusion facing the positioning tooth.

[0009] In the above solution, the exposed operating part of the length locking button and the sliding cooperation of the button groove simplify the locking and unlocking operation, which greatly improves the user's ease of operation compared with the traditional cumbersome adjustment method; the meshing design of the locking protrusion and the positioning protrusion enhances the reliability of locking and ensures that the length of the shoe shell remains stable after adjustment.

[0010] As a further embodiment of this utility model, a sliding guide structure is further provided between the sliding toe and the sole shell, the sliding guide structure comprising: A first sliding guide groove is provided at the front end of the sole shell; And a sliding protrusion disposed on the forefoot surface of the sliding toe, the sliding protrusion being slidably embedded in the first sliding guide groove.

[0011] As a preferred embodiment of this utility model, the sliding guide structure further includes: A second guide groove is longitudinally formed at the heel position of the sliding toe, and the length direction of the second guide groove is consistent with the guiding direction of the first sliding guide groove; And a guide bolt inserted in the second guide groove, the threaded portion of the guide bolt extending vertically downward and threadedly connected to the sole shell, the bottom surface of the bolt head pressing against the sliding toe heel surface around the second guide groove to restrict the sliding toe from detaching from the sole shell.

[0012] The dual-guide design of the sliding guide structure in the above solution (the first sliding guide groove engages with the front end of the sliding protrusion, and the second guide groove engages with the heel of the guide bolt) specifically solves the problems of insufficient rigidity and easy misalignment and derailment in traditional sliding guide structures. The front guide ensures the straightness of the sliding toe forward and backward, while the heel guide restricts vertical separation through bolt tightening. The two work together to improve the stability of the overall structure under lateral impact or frequent sliding, and extend the product's service life.

[0013] As a further embodiment of this utility model, the width adjustment unit includes: A slider that can slide left and right in the shrinkage groove, the top of the slider is provided with a protrusion that can extend into the sliding groove; Below the shrinkage groove, there is a locking component that can pass through the shrinkage groove and be movably connected to the slider, which is used to lock the slider in the shrinkage groove and prevent it from moving left or right. In this solution, the slider cooperates with the protrusion, and the sliding of the slider in the shrinkage groove drives the shrinkage body to move, thereby realizing precise adjustment of the width.

[0014] As a further embodiment of this utility model, the locking assembly includes a locking bolt, the thread of which passes vertically upward through the contraction groove and is threadedly connected to the bottom of the slider; The bolt head of the locking bolt extends vertically downwards from the bottom of the contraction groove, and the top surface of the bolt head presses against the bottom surface of the shoe sole shell around the contraction groove. Through the pressing friction between the bolt head and the bottom surface of the shoe sole shell, the slider's left and right sliding within the contraction groove is restricted, thus locking the slider. This solution solves the problems of complex structure, inconvenient operation, and insufficient locking force in traditional width locking components by using the friction of the locking bolt. The locking bolt utilizes pressing friction to provide a stable locking force, making it suitable for high-intensity sports scenarios.

[0015] As a preferred embodiment of this utility model, a positioning corrugated tooth is provided at the bottom of the slider, and a protruding guide boss is provided along the inner wall of the shrinkage groove. The top surface of the guide boss is provided with a positioning groove that cooperates with the positioning corrugated tooth. The engagement of the positioning corrugated tooth and the positioning groove further enhances the stability after adjustment and prevents loosening.

[0016] As a preferred embodiment of this utility model, the end of the protruding post is threadedly connected with a crimping bolt. The bolt head diameter of the crimping bolt is larger than the width of the sliding groove, and its bottom surface is movably crimped onto the surface of the shrinking body located at the edge of the sliding groove. When the slider slides left and right along the shrinking groove, the crimping bolt and the shrinking body are pressed together to restrict the protruding post from disengaging from the sliding groove, while allowing the shrinking body to slide relative to the protruding post along the length direction (front and back direction) of the sliding groove.

[0017] In the above scheme, the crimping bolt cleverly balances the independence of width adjustment and length adjustment—it restricts the protrusion from disengaging from the sliding groove, ensuring the structural integrity of the width adjustment mechanism, while allowing the shrinking body to slide back and forth relative to the protrusion, avoiding mutual interference between width adjustment and length adjustment, and ensuring that the two adjustment functions operate truly independently.

[0018] As a further embodiment of this invention, a crumple groove extending along the joint edge between the main body and the contractile body is provided. The front end of the crumple groove is close to the forefoot of the sliding toe, and the rear end first extends backward along the length direction (front-to-back direction) of the sliding toe, then bends towards the side of the sliding toe and penetrates through to the outer wall of the side. The width of the crumple groove gradually increases from the front end to the rear end, providing deformation buffer space for the contractile body to move left and right relative to the main body. The crumple groove provides a gradual deformation buffer space for the contractile body, ensuring smooth adjustment and preventing structural damage due to excessive deformation, further expanding the width adjustment range.

[0019] As a preferred embodiment of this utility model, the locking component includes: A recessed groove is provided on the top surface of the slider; A pull rod connected to the bottom surface of the stop block moves vertically downward through a through hole at the bottom of the groove, with its bottom end extending out of the bottom surface of the slider; A locking wrench is located below the shrink groove and on the bottom surface of the shoe sole shell. One end of the locking wrench is eccentrically hinged to the bottom end of the pull rod, and the other end is an operating end that can be flipped along the hinge axis at the bottom end of the pull rod. The top-compression spring sleeved on the pull rod has its two ends pressing against the bottom surface of the stop block and the inner top surface of the groove, respectively, to provide a pre-tightening force for the stop block to extend upward out of the groove. In this solution, the locking wrench achieves a combination of convenient operation and precise positioning through the cooperation of the top-compression spring and the positioning corrugated teeth, preventing loosening.

[0020] By flipping the operating end of the locking wrench upwards, the pull rod can be driven downwards to pull the stop block, compress the top pressure spring, and retract it into the groove, thereby causing the positioning corrugated teeth to engage with the positioning groove, preventing the slider from sliding left and right along the shrinkage groove; when the operating end of the locking wrench is flipped downwards, the pull rod can be driven upwards to release the top pressure spring and push the stop block (moving upwards from the groove), releasing the engagement between the positioning corrugated teeth and the positioning groove, allowing the slider to slide left and right along the shrinkage groove.

[0021] In summary, the advantages of this utility model compared to the prior art are as follows: By independently setting the length adjustment mechanism and the width adjustment mechanism, and using the meshing structure of the positioning tooth groove and the pressing locking component in conjunction with the return spring to achieve stable length locking and convenient operation, the present utility model improves sliding stability through a double sliding guide structure; by dividing the forefoot part of the sliding shoe toe into a main body part and a contraction body part, the width adjustment is driven by the cross-shaped sliding groove and contraction groove in conjunction with the width adjustment unit, and the deformation buffer is provided by the collapse groove; the locking component of the locking bolt or locking wrench enhances the reliability of width locking; and the pressing bolt ensures the independence of the two adjustments, the present utility model achieves independent, precise and stable adjustment of the length and width of the roller skate shell, effectively solving the problems of adjustment coupling, unreliable locking, cumbersome operation, unstable guidance and limited adjustment range of traditional products, and significantly improving the product's adaptability to different foot shapes, sports safety and user operation experience. Attached Figure Description

[0022] Figure 1 This is one of the perspective views of the first embodiment of this utility model.

[0023] Figure 2 This is a second perspective view of the first embodiment of the present utility model.

[0024] Figure 3 This is one of the cross-sectional views of the first embodiment of the present invention, and an enlarged view of a partial area in the figure.

[0025] Figure 4 for Figure 3 A magnified view of point A in the middle.

[0026] Figure 5 This is a second cross-sectional view of the first embodiment of the present invention.

[0027] Figure 6 for Figure 5 A magnified view of point B in the middle.

[0028] Figure 7 This is a cross-sectional view of the length adjustment mechanism in this utility model.

[0029] Figure 8 This is one of the exploded views of the first embodiment of this utility model.

[0030] Figure 9 This is a second exploded view of the first embodiment of the present invention.

[0031] Figure 10 This is one of the perspective views of the second embodiment of the present invention, and an enlarged view of a partial area in the figure.

[0032] Figure 11This is one of the exploded views of the second embodiment of this utility model.

[0033] Figure 12 This is a second exploded view of the second embodiment of the present invention. Detailed Implementation

[0034] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0035] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 12 The roller skate shell shown is capable of independently adjusting its length and width. Its core lies in the independent control of length and width through separate, separate adjustment mechanisms. Its basic structure includes a sole shell 1, a sliding toe cap 2, a length adjustment mechanism a, a width adjustment mechanism b, and a sliding guide structure d. The sole shell 1 serves as the overall support base. The sliding toe cap 2 can slide back and forth relative to the sole shell 1 to adjust its length. The sole shell 1 and the sliding toe cap 2 are equipped with independently operating length adjustment mechanism a and width adjustment mechanism b. Length adjustment mechanism a is used to lock or unlock the sliding of the sliding toe cap 2 relative to the sole shell 1 to adjust the overall length of the skate shell. Width adjustment mechanism b is located at the forefoot portion of the sliding toe cap 2, used to drive the forefoot portion to elastically deform and change its width, and to lock it to achieve width adjustment. The sliding guide structure d ensures the stability of the sliding of the sliding toe cap 2, preventing misalignment or derailment.

[0037] The length adjustment mechanism a is achieved by sliding the toe 2 back and forth relative to the sole shell 1. Its core is the engagement and locking of the positioning groove 21 and the pressing locking component 3. Specifically, the heel of the sliding toe 2 is provided with a positioning groove 21 with positioning protrusions 211. The positioning protrusions 211 are distributed at intervals along the front and back direction on the same side of the positioning groove 21 for length positioning. The pressing locking component 3 includes a button slide 11, a length locking button 32, an elastic element 30, and a locking protrusion 31. The button slide 11 is opened laterally at the heel of the sole shell 1. One end penetrates the side of the sole shell to form an operation opening. The length locking button 32 is movably assembled in the button slide 11. One end extends out of the opening to form an operation part, and the other end abuts against the inner wall of the button slide 11 through the return spring elastic element 30. The spring provides a preload force to reset the button. The locking protrusion 31 is provided on the top surface of the length locking button 32 and extends into the positioning groove 21. Its side is provided with locking protrusions 311 that engage with the positioning protrusions 211. During operation, press the exposed operating part of the length locking button 32 to compress the return spring, which drives the locking protrusion 31 to move laterally, causing the locking protrusion 311 to disengage from the positioning protrusion 211. At this time, the sliding shoe toe 2 can slide freely in the front and back direction until it is adjusted to the required length. Release the length locking button 32, and the return spring pushes the button to reset. The locking protrusion 311 re-engages with the positioning protrusion 211. Rigid locking is achieved through tooth surface engagement and spring preload, preventing retraction or displacement after adjustment.

[0038] To address the issues of insufficient rigidity and easy misalignment in traditional sliding guides, this invention employs a dual sliding guide structure design to ensure the stability of the sliding toe cap 2 during length adjustment. For the front-end guidance, the front end of the sole shell 1 is provided with a first sliding guide groove 12. In this embodiment, both sides of the first sliding guide groove 12 are grooved. The forefoot surface of the sliding toe cap 2 is provided with a sliding protrusion 22. In this embodiment, the sliding protrusion 22 also has protruding edges on the left and right sides that match the left and right sides of the first sliding guide groove 12. The sliding protrusion 22 slides within the first sliding guide groove 12, limiting the left and right offset of the sliding toe cap 2 and ensuring the straightness of the forward and backward sliding. Simultaneously, a third sliding guide groove 221 runs through the center of the sliding protrusion 22 from front to back, and a main bolt 51 passes through the third sliding guide groove 221. The threaded portion of the main bolt 51 passes through the third sliding guide groove 221. The sliding guide groove 221 is threadedly connected to the center of the first sliding guide groove 12. The bolt head diameter of the main bolt 51 is larger than the width of the third sliding guide groove 221, and the bolt head of the main bolt 51 slides against the forefoot surface of the sliding shoe toe 2. In terms of the heel, a second guide groove 23 is longitudinally opened at the heel position of the sliding shoe toe 2. The guide bolt 5 passes through the second guide groove 23, and its screw is threadedly connected to the sole shell 1. The bolt head presses against the surface of the sliding shoe toe 2. This structure allows the sliding shoe toe 2 to slide in the front-back direction (the lengths of the second guide groove 23 and the third sliding guide groove 221 are adapted to the sliding stroke), and restricts the vertical separation by bolt clamping to avoid derailment caused by lateral impact.

[0039] In addition, the width adjustment mechanism b focuses on the forefoot portion of the sliding toe 2. It is achieved by dividing the forefoot portion of the sliding toe 2 into a main body 241 connected to the heel portion of the sliding toe 2 and a retractable body 242 that can move left and right relative to the main body 241. A crumple groove 24 extending along the joint edge between the main body 241 and the retractable body 242 is provided. The front end of the crumple groove 24 is close to the front end of the forefoot portion of the sliding toe 2, and the rear end first extends backward along the length direction of the sliding toe 2, then bends to the side of the sliding toe 2 and penetrates to the outer wall of the side. The width of the crumple groove 24 gradually increases from the front end to the rear end, which is used to provide deformation buffer space for the retractable body 242 to move left and right relative to the main body 241, so as to avoid excessive deformation and damage to the structure. A strip-shaped sliding groove 25 is provided on the shrinking body part 242 along the front-back direction, and a shrinking groove 13 is provided on the sole shell 1 in a cross shape with the sliding groove 25; a width adjustment unit c is provided between the sliding groove 25 and the shrinking groove 13, which can drive the shrinking body part 242 to move closer to or away from the main body part 241.

[0040] like Figures 1 to 9The first embodiment of this utility model is shown. The width adjustment unit c includes a slider 6 that can be slidably disposed in the shrinkage groove 13. The top of the slider 6 is provided with a protrusion 61 that can extend into the sliding groove 25. The end of the protrusion 61 is threadedly connected to a crimping bolt 8. The bolt head diameter of the crimping bolt 8 is larger than the width of the sliding groove 25. Its bottom surface is movably crimped onto the surface of the shrinkage body 242 located at the edge of the sliding groove 25. This not only restricts the protrusion 61 from detaching from the sliding groove 25 to ensure structural integrity, but also allows the shrinkage body 242 to slide relative to the protrusion 61 in the front-back direction, avoiding mutual interference between width adjustment and length adjustment, and ensuring independence. By moving the slider 6 left and right, the protrusion 61 pushes the shrinking body 242 closer to or away from the main body 241, thereby achieving width adjustment. Below the shrinking groove 13, there is a locking component e that can pass through the shrinking groove 13 and be movably connected to the slider 6, used to lock the slider 6 in the shrinking groove 13 and prevent it from moving left and right. The locking component e includes a locking bolt 7. The screw of the locking bolt 7 passes vertically upward through the shrinking groove 13 and is threadedly connected to the bottom of the slider 6. The bolt head of the locking bolt 7 extends vertically downward out of the bottom of the shrinking groove 13, and the top surface of the bolt head presses against the bottom surface of the shoe sole shell 1 around the shrinking groove 13. Through the pressing friction between the bolt head and the bottom surface of the shoe sole shell 1, the left and right sliding of the slider 6 in the shrinking groove 13 is restricted, thereby achieving locking of the slider 6. To further enhance the stability of the slider 6 after adjustment and prevent it from loosening again, a positioning corrugated tooth 62 is provided at the bottom of the slider 6, and a protruding guide boss 131 is provided along the inner wall of the contraction groove 13. The top surface of the guide boss 131 is provided with a positioning groove 132 that mates with the positioning corrugated tooth 62. During operation, when the locking bolt 7 is loosened, the friction between the bolt head and the bottom surface of the sole shell 1 disappears, and the positioning corrugated tooth 62 disengages from the positioning groove 132. At this time, the slider 6 can slide left and right along the contraction groove 13 to adjust its width. When the locking bolt 7 is tightened, the bolt head presses against the bottom surface of the sole shell 1, fixing the slider 6 through friction. At the same time, the positioning corrugated tooth 62 engages with the positioning groove 132, further enhancing stability and preventing loosening during high-intensity exercise.

[0041] like Figures 10 to 12The figure shows the second embodiment of this utility model. It can be clearly seen from the figure that this embodiment is basically the same as the first embodiment, except that the locking component e is different. In this embodiment, the locking component e includes a recessed groove 63 set on the top surface of the slider 6; a stop block 91 is movably provided in the groove 63; a pull rod 92 connected to the bottom surface of the stop block 91 moves vertically downward through the through hole at the bottom of the groove 63, and the bottom end extends out of the bottom surface of the slider 6; a locking wrench 9 is provided below the shrink groove 13 and located on the bottom surface of the sole shell 1. One end of the locking wrench 9 is eccentrically hinged to the bottom end of the pull rod 92, and the other end is an operating end that can be flipped along the hinge axis at the bottom end of the pull rod 92; a top pressure spring 93 is sleeved on the pull rod 92, and its two ends press against the bottom surface of the stop block 91 and the inner top surface of the groove 63 respectively, for providing a pre-tightening force to make the stop block 91 extend upward out of the groove 63. During operation, by flipping the operating end of the locking wrench 9 upwards, the pull rod 92 can be driven downwards to pull the stop block 91 to compress the top pressure spring 93 and retract it into the groove 63, thereby causing the positioning corrugated teeth 62 to engage with the positioning groove 132, preventing the slider 6 from sliding left and right along the shrinkage groove 13; when the operating end of the locking wrench 9 is flipped downwards, the pull rod 92 can be driven upwards to release the top pressure spring 93 and push the stop block 91 upwards from the groove 63, releasing the engagement between the positioning corrugated teeth 62 and the positioning groove 132, allowing the slider 6 to slide left and right along the shrinkage groove 13.

[0042] This invention achieves independent control of length and width through a separate adjustment mechanism. The core process is as follows: For length adjustment, press the length locking button to unlock, and adjust the length by sliding the toe relative to the sole shell back and forth. After releasing the button, the toothed surface engages and locks the shoe, and the double guide structure ensures stable sliding. For width adjustment, unlock the width locking component (bolt or wrench), and the slider moves left and right along the contraction groove. The protruding post pushes the contraction body relative to the main body to move (the contraction groove provides cushioning). After adjustment, the locking component fixes the slider, and the pressing bolt ensures independent adjustment. The two adjustment mechanisms do not interfere with each other, achieving precise adaptation of the roller skate shell to different foot shapes, improving safety and ease of operation.

[0043] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wheel skating shoe shell which can independently adjust the length and width, comprising a shoe sole shell (1) and a sliding shoe head (2), the sliding shoe head (2) is slidably arranged on the shoe sole shell (1), characterized in that: The sole shell (1) and the sliding toe (2) are provided with a length adjustment mechanism (a) and a width adjustment mechanism (b) that operate independently of each other. The length adjustment mechanism (a) includes a positioning groove (21) with positioning protrusions (211) provided on the heel of the sliding toe (2). The positioning protrusions (211) are distributed at intervals on the same side of the positioning groove (21) in the front-back direction. A pressing locking component (3) is provided on the heel of the sole shell (1). One end of the component is exposed on one side of the sole shell (1) to form an operating part, and the other end is connected to the sole shell (1) through an elastic element (30). The pressing locking component (3) is provided with locking protrusions (311) that engage with the positioning protrusions (211). The width adjustment mechanism (b) includes dividing the forefoot of the sliding toe (2) into a main body (241) connected to the heel of the sliding toe (2) and a retractable body (242) that can move left and right relative to the main body (241). A strip-shaped sliding groove (25) is provided on the retractable body (242) along the front-back direction. A retractable groove (13) is provided laterally on the sole shell (1) in a cross shape with the sliding groove (25). A width adjustment unit (c) is provided between the sliding groove (25) and the retractable groove (13) that can drive the retractable body (242) to move closer to or away from the main body (241).

2. The roller skate shell with independently adjustable length and width according to claim 1, characterized in that, The pressing locking component (3) includes a button groove (11) provided laterally on the heel of the sole shell (1). One end of the button groove (11) passes through one side of the sole shell (1) to form an opening. A length locking button (32) is movably mounted in the button groove (11). One end of the button lock button (32) extends out of the button groove (11) along the opening to form the operating part. The other end abuts against the inner wall of the button groove (11) through an elastic element (30). The elastic element (30) is a return spring. Its two ends press against the tail end of the length locking button (32) and the inner wall of the button groove (11) respectively to provide a preload force to reset the length locking button (32). The length locking button (32) has an upwardly protruding locking protrusion (31) on the top surface near the tail end. The locking protrusion (31) extends into the positioning tooth groove (21), and the locking tooth (311) is located on the side of the locking protrusion (31) facing the positioning tooth (211).

3. The roller skate shell with independently adjustable length and width according to claim 2, characterized in that, A sliding guide structure (d) is further provided between the sliding toe (2) and the sole shell (1), the sliding guide structure (d) comprising: The first sliding guide groove (12) is provided at the front end of the sole shell (1); And a sliding protrusion (22) is provided on the forefoot bottom surface of the sliding toe (2), the sliding protrusion (22) being slidably embedded in the first sliding guide groove (12).

4. The roller skate shell with independently adjustable length and width according to claim 3, characterized in that, The sliding guide structure (d) further includes: A second guide groove (23) is longitudinally opened at the heel position of the sliding toe (2), and the length direction of the second guide groove (23) is consistent with the guiding direction of the first sliding guide groove (12); And a guide bolt (5) inserted in the second guide groove (23), the threaded part of the guide bolt (5) extends vertically downward and is threadedly connected to the sole shell (1), the bottom surface of the bolt head is pressed against the heel surface of the sliding toe (2) around the second guide groove (23) to restrict the sliding toe (2) from moving up and down relative to the sole shell (1).

5. A roller skate shell with independently adjustable length and width according to claim 1, characterized in that, The width adjustment unit (c) includes: A slider (6) is slidably disposed in the shrinkage groove (13), and the top of the slider (6) is provided with a protrusion (61) that can extend into the sliding groove (25). Below the shrinkage groove (13), there is a locking component (e) that can pass through the shrinkage groove (13) and be movably connected to the slider (6), for locking the slider (6) in the shrinkage groove (13) and preventing it from moving left or right.

6. A roller skate shell with independently adjustable length and width according to claim 5, characterized in that, The locking assembly (e) includes a locking bolt (7), the shank of which passes vertically upward through the contraction groove (13) and is threaded to the bottom of the slider (6); The bolt head of the locking bolt (7) extends vertically downward to the bottom of the contraction groove (13), and the top surface of the bolt head presses against the bottom surface of the shoe sole shell (1) around the contraction groove (13). Through the pressing friction between the bolt head and the bottom surface of the shoe sole shell (1), the slider (6) is restricted from sliding left and right in the contraction groove (13), so as to lock the slider (6).

7. A roller skate shell with independently adjustable length and width according to claim 5, characterized in that, The bottom of the slider (6) is provided with positioning corrugated teeth (62), and a protruding guide boss (131) is provided along the inner wall of the shrinkage groove (13). The top surface of the guide boss (131) is provided with a positioning groove (132) that cooperates with the positioning corrugated teeth (62).

8. A roller skate shell with independently adjustable length and width according to claim 5, characterized in that, The end of the protrusion (61) is threaded with a crimping bolt (8), the bolt head diameter of which is greater than the width of the sliding groove (25), and its bottom surface is movably crimped onto the surface of the contraction body (242) located at the edge of the sliding groove (25).

9. A roller skate shell with independently adjustable length and width according to claim 1, characterized in that, A crumple groove (24) extending along the joint edge of the main body (241) and the contractile body (242) is provided. The front end of the crumple groove (24) is close to the front end of the forefoot of the sliding shoe toe (2), and the rear end first extends backward along the length direction of the sliding shoe toe (2), then bends to the side of the sliding shoe toe (2) and penetrates to the outer wall of the side. The width of the crumple groove (24) gradually increases from the front end to the rear end, which is used to provide deformation buffer space for the contractile body (242) to move left and right relative to the main body (241).

10. A roller skate shell with independently adjustable length and width according to claim 7, characterized in that, The locking component (e) includes: A recessed groove (63) is provided on the top surface of the slider (6), and a stop (91) is movably provided in the groove (63). The pull rod (92) connected to the bottom surface of the stop (91) moves vertically downward through the through hole at the bottom of the groove (63), and the bottom end extends out of the bottom surface of the slider (6); A locking wrench (9) is provided below the shrinkage groove (13) and on the bottom surface of the shoe sole shell (1). One end of the locking wrench (9) is eccentrically hinged to the bottom end of the pull rod (92), and the other end is an operating end that can be flipped along the hinge axis at the bottom end of the pull rod (92). The top pressure spring (93) sleeved on the pull rod (92) presses against the bottom surface of the stop block (91) and the inner top surface of the groove (63) at both ends, and is used to provide a preload force to make the stop block (91) extend upward out of the groove (63).

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