Rolling pin

Abstract

The utility model provides a rolling pin. The rolling pin comprises a rolling cylinder; the thickness determining disc is arranged at at least one end of the rolling cylinder, the thickness determining disc protrudes out of the circumferential outer side of the rolling cylinder, and the central axis of the thickness determining disc and the central axis of the rolling cylinder are collinear; the mounting shaft is fixedly connected with the rolling cylinder, and the mounting shaft extends to one side, deviating from the rolling cylinder, of the thickness determining disc; the handle sleeve is rotatably arranged on the outer side of the mounting shaft in a sleeving manner; the connecting ring assembly is arranged in the handle sleeve, the mounting shaft is sleeved with the connecting ring assembly, and the connecting ring assembly is in transition fit or clearance fit with the mounting shaft. According to the technical scheme, the problem that in the prior art, due to the fact that a handle is fixedly connected with a roller, the thickness uniformity of a product is poor is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and more specifically, to a rolling pin. Background Technology

[0002] A rolling pin is an indispensable kitchen tool, widely used in homes and the catering industry. It is primarily used to roll out dough for shaping and other processing tasks.

[0003] Rolling pins in related technologies typically consist of a long, straight roller and handles fixed to both ends of the roller. The handles are fixedly connected to the roller, meaning their relative position is fixed and cannot be adjusted. This fixed handle design often causes inconvenience for the user.

[0004] When rolling out dough of uniform thickness, a fixed position of the handle relative to the roller makes it difficult to control the rolling pressure, thus affecting the uniformity of the product thickness and the quality of the product. Utility Model Content

[0005] The main purpose of this utility model is to provide a rolling pin to solve the problem in related technologies where the handle and roller are fixedly connected, which easily leads to poor uniformity of product thickness.

[0006] To achieve the above objectives, this utility model provides a rolling pin, comprising: a rolling cylinder; a thickness-fixing plate disposed at at least one end of the rolling cylinder, the thickness-fixing plate protruding outward in the circumferential direction of the rolling cylinder, the central axis of the thickness-fixing plate being collinear with the central axis of the rolling cylinder; a mounting shaft fixedly connected to the rolling cylinder, the mounting shaft extending to the side of the thickness-fixing plate opposite to the rolling cylinder; a handle sleeve rotatably sleeved on the outside of the mounting shaft; and a connecting ring assembly disposed inside the handle sleeve, the connecting ring assembly being sleeved on the outside of the mounting shaft, and the connecting ring assembly and the mounting shaft having a transition fit or a clearance fit.

[0007] Furthermore, the handle sleeve includes a first cylindrical section and a second cylindrical section communicating with the first cylindrical section. The inner diameter of the first cylindrical section is smaller than the inner diameter of the second cylindrical section, so as to form a first stop surface on the inner sidewall of the handle sleeve at an angle to the central axis of the handle sleeve. The connecting ring assembly includes a first connecting ring disposed between the mounting shaft and the handle sleeve. The first connecting ring has an inner ring surface, an outer ring surface, and a connecting surface connecting the inner ring surface and the outer ring surface. The inner ring surface is in transition fit or clearance fit with the mounting shaft, the outer ring surface is in interference fit with the inner sidewall of the second cylindrical section, and the connecting surface is in stop fit with the first stop surface.

[0008] Furthermore, the first end of the handle sleeve has a first opening, and the end of the second cylindrical section opposite to the first cylindrical section forms a first opening, with the first opening facing the thickness plate.

[0009] Furthermore, the handle sleeve includes a first cylindrical section and a third cylindrical section communicating with the first cylindrical section. The inner diameter of the first cylindrical section is smaller than the inner diameter of the third cylindrical section, so as to form a second stop surface on the inner sidewall of the handle sleeve at an angle to the central axis of the handle sleeve. The connecting ring assembly includes a second connecting ring, which includes a first ring segment and a second ring segment connected to the first ring segment. The diameter of the first ring segment is larger than the diameter of the second ring segment, so as to form a third stop surface between the first ring segment and the second ring segment. The first ring segment is located between the third cylindrical section and the mounting shaft, and the second ring segment is located between the first cylindrical section and the mounting shaft. The third stop surface and the second stop surface are in a stop-fitting engagement.

[0010] Furthermore, the connecting ring assembly also includes a third connecting ring and a sealing ring. The third connecting ring is disposed between the third cylindrical section and the mounting shaft. The third connecting ring is located on the side of the second connecting ring away from the first cylindrical section. A first ring groove is provided on the inner ring wall of the third connecting ring, and part of the sealing ring is located in the first ring groove.

[0011] Furthermore, a second annular groove is provided on the outer circumferential side of the mounting shaft, and part of the sealing ring is located within the second annular groove.

[0012] Furthermore, the second end of the handle sleeve has a second opening, and the third cylindrical section forms a second opening at one end opposite to the first cylindrical section. The second opening is disposed opposite to the thickness plate, and the rolling pin also includes a cover that covers the second opening.

[0013] Furthermore, an internal thread section is provided on the inner wall of the end of the third cylinder section opposite to the first cylinder section, and an external thread that mates with the internal thread section is provided on the cover.

[0014] Furthermore, the connecting ring assembly also includes a fourth connecting ring, which is located between the third connecting ring and the cover along the axial direction of the mounting shaft. The fourth connecting ring is in contact with the third connecting ring and is also in contact with the cover.

[0015] Furthermore, the rolling cylinder is a cylinder with a first outer diameter D1; the thickness plate is a disc with a second outer diameter D2, and the relationship between D1 and D2 satisfies: 2.0mm≤D2-D1≤4.0mm; and / or, the diameter of the mounting shaft is D3, and D3 satisfies: 9.0mm≤D3≤12.0mm.

[0016] The rolling pin, utilizing the technical solution of this utility model, includes: a rolling cylinder, a thickness-fixing plate, a mounting shaft, a handle sleeve, and a connecting ring assembly. The thickness-fixing plate is located at at least one end of the rolling cylinder, protruding outwards circumferentially from the rolling cylinder. The central axis of the thickness-fixing plate is collinear with the central axis of the rolling cylinder. The mounting shaft is fixedly connected to the rolling cylinder, extending to the side of the thickness-fixing plate opposite to the rolling cylinder. The handle sleeve is rotatably fitted onto the outside of the mounting shaft. The connecting ring assembly is located inside the handle sleeve, fitted onto the outside of the mounting shaft, and the connecting ring assembly and the mounting shaft have a transition fit or a clearance fit. Thus, the connecting ring assembly provides stable support for the handle sleeve from the mounting shaft. Through the cooperation of the connecting ring assembly with the mounting shaft and the handle sleeve, when the user moves the handle sleeve, the mounting shaft can rotate relative to the handle sleeve via the connecting ring assembly, thereby causing the rolling cylinder to rotate to roll the dough, improving the smoothness of rolling without jamming or abnormal noise. Furthermore, the thickness-fixing plate can limit the thickness of the dough. When the dough thickness is lower than the preset thickness, the thickness-fixing plate reduces the rolling pressure on the dough, thereby preventing the dough from becoming too thin in some areas and improving the uniformity of the dough thickness. In this way, the user can control the rotation of the rolling cylinder by moving the handle sleeve, facilitating control of the rolling pressure. The thickness-fixing plate also limits the dough thickness; by adjusting the rolling pressure and thickness, the uniformity of the product thickness and product quality can be improved. Therefore, the technical solution of this application effectively solves the problem in related technologies where the handle and roller are fixedly connected, which easily leads to poor product thickness uniformity.

[0017] Furthermore, the design of the connecting ring assembly and the mounting shaft, with either a transition fit or a clearance fit, facilitates the separation of the connecting ring assembly from the mounting shaft. This allows the connecting ring assembly and the handle sleeve to be removed from the mounting shaft, making cleaning and maintenance of the rolling pin easier. The fit between the connecting ring assembly and the mounting shaft also makes the handle sleeve easy to disassemble and clean, reducing the risk of bacterial growth and extending the lifespan of the rolling pin. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A perspective structural schematic diagram of an embodiment of the rolling pin according to the present invention is shown;

[0020] Figure 2 It shows Figure 1 A partial exploded view of the rolling pin;

[0021] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the handle sleeve of a rolling pin when viewed from a perspective.

[0022] Figure 4 It shows Figure 1 An exploded view of the handle sleeve of a rolling pin.

[0023] The above figures include the following reference numerals:

[0024] 10. Rolling pin;

[0025] 20. Fixed thickness plate;

[0026] 30. Mounting shaft; 31. Second annular groove;

[0027] 40. Handle sleeve; 41. First cylindrical section; 42. Second cylindrical section; 43. First stop surface; 44. Third cylindrical section; 441. Internal thread section; 45. Second stop surface; 46. First opening; 47. Second opening;

[0028] 50. Connecting ring assembly; 51. First connecting ring; 52. Second connecting ring; 521. First ring segment; 522. Second ring segment; 53. Third connecting ring; 531. Sealing ring; 54. Fourth connecting ring;

[0029] 60. Cover body; 61. External thread. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] like Figures 1 to 4 As shown, applying the technical solution of this embodiment, the rolling pin includes: a rolling cylinder 10, a thickness-fixing plate 20, a mounting shaft 30, a handle sleeve 40, and a connecting ring assembly 50. The thickness-fixing plate 20 is disposed at at least one end of the rolling cylinder 10, protruding circumferentially outward from the rolling cylinder 10. The central axis of the thickness-fixing plate 20 is collinear with the central axis of the rolling cylinder 10. The mounting shaft 30 is fixedly connected to the rolling cylinder 10, extending to the side of the thickness-fixing plate 20 opposite to the rolling cylinder 10. The handle sleeve 40 is rotatably fitted onto the outside of the mounting shaft 30. The connecting ring assembly 50 is disposed inside the handle sleeve 40, fitted onto the outside of the mounting shaft 30, and the connecting ring assembly 50 and the mounting shaft 30 have a transition fit or a clearance fit.

[0034] In this way, the connecting ring assembly 50 provides stable support for the handle sleeve 40 via the mounting shaft 30. Through the cooperation of the connecting ring assembly 50 with the mounting shaft 30 and the handle sleeve 40, when the user moves the handle sleeve 40, the mounting shaft 30 can rotate relative to the handle sleeve 40 via the connecting ring assembly 50. This causes the mounting shaft 30 to rotate the rolling pin 10 to roll the dough, improving the smoothness of rolling without jamming or abnormal noise. Furthermore, the thickness plate 20 limits the thickness of the dough. When the dough thickness is lower than the preset thickness, the thickness plate 20 reduces the rolling pressure on the dough, preventing localized thinning and improving the uniformity of dough thickness. Thus, the user can control the rotation of the rolling pin 10 by moving the handle sleeve 40, facilitating control of the rolling pressure. The thickness plate 20 also limits the dough thickness; by adjusting the rolling pressure and thickness, the uniformity of product thickness and product quality can be improved. Therefore, the technical solution of this application effectively solves the problem in the related technology that the fixed connection between the handle and the roller easily leads to poor thickness uniformity of the product.

[0035] Furthermore, the design of the connecting ring assembly 50 with the mounting shaft 30 through a transition fit or clearance fit facilitates the separation of the connecting ring assembly 50 from the mounting shaft 30, allowing the connecting ring assembly 50 and the handle sleeve 40 to be removed from the mounting shaft 30, thus facilitating the cleaning and maintenance of the rolling pin. The fit between the connecting ring assembly 50 and the mounting shaft 30 makes the disassembly of the handle sleeve 40 convenient for cleaning, reducing the risk of bacterial growth and extending the lifespan of the rolling pin.

[0036] Furthermore, with a fixed dough volume, the thickness of the dough can be limited by the thickness plate 20, preventing the dough from becoming too thin in some areas. This also limits the rolling size of the dough, improving the dimensional uniformity and quality of the product.

[0037] In this embodiment, the rolling mill 10, the thickness-fixing plate 20, the mounting shaft 30, and the handle sleeve 40 are all made of stainless steel. There are two thickness-fixing plates 20, each disposed at one end of the rolling mill 10, and both plates have the same diameter. There are also two handle sleeves 40, each disposed at one end of the rolling mill 10.

[0038] like Figures 1 to 4 As shown, the handle sleeve 40 includes a first cylindrical section 41 and a second cylindrical section 42 communicating with the first cylindrical section 41. The inner diameter of the first cylindrical section 41 is smaller than the inner diameter of the second cylindrical section 42, so that a first stop surface 43 is formed on the inner wall of the handle sleeve 40 at an angle to the central axis of the handle sleeve 40. The connecting ring assembly 50 includes a first connecting ring 51 disposed between the mounting shaft 30 and the handle sleeve 40. The first connecting ring 51 has an inner ring surface, an outer ring surface, and a connecting surface connecting the inner ring surface and the outer ring surface. The inner ring surface has a transition fit or clearance fit with the mounting shaft 30, the outer ring surface has an interference fit with the inner wall of the second cylindrical section 42, and the connecting surface has a stop fit with the first stop surface 43. The first stop surface 43 restricts the radial displacement of the first connecting ring 51 within the handle sleeve 40, reducing its movement and making its placement more stable and reliable. This ensures the handle sleeve 40 can reliably rotate the rolling pin 10 via the connecting ring assembly 50, resulting in more stable rolling of the dough. Furthermore, the transition or clearance fit between the inner ring surface and the mounting shaft 30 facilitates the separation of the first connecting ring 51 from the mounting shaft 30, enabling easy disassembly and cleaning of the rolling pin. The interference fit between the outer ring surface and the inner wall of the second cylinder section 42 facilitates the connection between the first connecting ring 51 and the handle sleeve 40, making installation convenient.

[0039] like Figures 1 to 4As shown, the first end of the handle sleeve 40 has a first opening 46, and the end of the second cylindrical section 42 opposite to the first cylindrical section 41 forms the first opening 46, with the first opening 46 facing the thickness plate 20. The first opening 46 facilitates the installation of the first connecting ring 51 into the second cylindrical section 42, and also facilitates the removal of the first connecting ring 51 from the second cylindrical section 42 through the first opening 46, thereby facilitating the cleaning of the components inside the handle sleeve 40 and reducing the risk of bacterial growth.

[0040] like Figures 1 to 4 As shown, the handle sleeve 40 includes a first cylindrical section 41 and a third cylindrical section 44 communicating with the first cylindrical section 41. The inner diameter of the first cylindrical section 41 is smaller than the inner diameter of the third cylindrical section 44, so that a second stop surface 45 is formed on the inner wall of the handle sleeve 40 at an angle to the central axis of the handle sleeve 40. The connecting ring assembly 50 includes a second connecting ring 52, which includes a first ring section 521 and a second ring section 522 connected to the first ring section 521. The diameter of the first ring section 521 is larger than the diameter of the second ring section 522, so that a third stop surface is formed between the first ring section 521 and the second ring section 522. The first ring section 521 is located between the third cylindrical section 44 and the mounting shaft 30, and the second ring section 522 is located between the first cylindrical section 41 and the mounting shaft 30. The third stop surface and the second stop surface 45 are in a stop-fitting engagement. By setting the second stop surface 45 and the third stop surface, the radial displacement of the second connecting ring 52 within the handle sleeve 40 can be limited, reducing the movement of the second connecting ring 52 within the handle sleeve 40. This makes the setting of the second connecting ring 52 within the handle sleeve 40 more stable and reliable, allowing the handle sleeve 40 to reliably drive the rolling cylinder 10 to rotate via the connecting ring assembly 50 when it moves, thus making the rolling of the dough by the rolling pin more stable. By placing the first ring segment 521 of the second connecting ring 52 between the third cylinder segment 44 and the mounting shaft 30, and placing the second ring segment 522 between the first cylinder segment 41 and the mounting shaft 30, a unique segmented support structure is formed. This design, through the cooperation of cylinder segments and ring segments of different diameters, stabilizes the connection between the handle sleeve 40 and the mounting shaft 30, ensuring structural stability during the rolling process.

[0041] In some embodiments, the inner surface of the first ring segment 521 has a transition fit or clearance fit with the mounting shaft 30, and the outer surface of the first ring segment 521 has an interference fit with the inner surface of the third cylindrical segment 44. The inner surface of the second ring segment 522 has a transition fit or clearance fit with the mounting shaft 30, and the outer surface of the second ring segment 522 has an interference fit with the inner surface of the first cylindrical segment 41. This facilitates the separation of the second connecting ring 52 from the mounting shaft 30, enabling the disassembly and cleaning of the rolling pin, and also facilitates the connection of the second connecting ring 52 to the handle sleeve 40, making installation convenient.

[0042] like Figures 1 to 4As shown, the connecting ring assembly 50 also includes a third connecting ring 53 and a sealing ring 531. The third connecting ring 53 is disposed between the third cylindrical section 44 and the mounting shaft 30. The third connecting ring 53 is located on the side of the second connecting ring 52 away from the first cylindrical section 41. A first annular groove is provided on the inner ring wall of the third connecting ring 53, and part of the sealing ring 531 is located in the first annular groove. The sealing ring 531 enhances the waterproof and dustproof performance of the rolling pin, effectively preventing dough residue or foreign objects from entering the gap between the handle sleeve 40 and the mounting shaft 30, reducing the difficulty of cleaning and maintenance, reducing the risk of bacterial growth, extending the service life of the rolling pin, and ensuring hygienic conditions for food preparation. The first annular groove facilitates the positioning and installation of the sealing ring 531, improving the sealing performance.

[0043] Furthermore, by placing the sealing ring 531 on the third connecting ring 53, which is separate from the second connecting ring 52, the radial length of the third connecting ring 53 is reduced, which facilitates the installation of the sealing ring 531 on the third connecting ring 53 and also facilitates the machining of the first ring groove on the third connecting ring 53, thereby reducing the machining cost.

[0044] like Figures 1 to 4 As shown, a second annular groove 31 is provided on the outer circumferential side of the mounting shaft 30, and part of the sealing ring 531 is located within the second annular groove 31. The second annular groove 31 on the mounting shaft 30 can limit the sealing ring 531, preventing the sealing ring 531 from shifting, further improving the sealing effect of the sealing ring 531 between the third connecting ring 53 and the mounting shaft 30, preventing dough residue or foreign objects from entering the interior of the handle sleeve 40, and reducing the risk of bacterial growth.

[0045] like Figures 1 to 4 As shown, the second end of the handle sleeve 40 has a second opening 47, and the end of the third cylindrical section 44 opposite to the first cylindrical section 41 forms the second opening 47. The second opening 47 is positioned opposite to the thickness plate 20. The rolling pin also includes a cover 60 covering the second opening 47. The second opening 47 at the second end of the handle sleeve 40, along with the removable cover 60, facilitates cleaning and maintenance of the interior of the handle sleeve 40. Users can easily remove the cover 60 to thoroughly clean the interior of the handle sleeve 40, preventing the accumulation of dough residue or foreign matter and keeping the rolling pin clean. Furthermore, positioning the second opening 47 at the end of the third cylindrical section 44 allows the second connecting ring 52 and the third connecting ring 53 to be easily installed into and removed from the third cylindrical section 44 through the second opening 47, thus facilitating the assembly and disassembly of the rolling pin and its cleaning.

[0046] like Figures 1 to 4As shown, the inner wall of the third cylindrical section 44 opposite to the first cylindrical section 41 is provided with an internal thread section 441, and the cover 60 is provided with an external thread 61 that mates with the internal thread section 441. The threaded connection between the third cylindrical section 44 and the cover 60 improves the connection strength and ease of disassembly between the cover 60 and the third cylindrical section 44. This design not only makes the cleaning process more thorough and faster, but also facilitates the replacement of the cover 60, reduces the disassembly and assembly time during use, and improves the cleaning and maintenance efficiency and ease of use of the rolling pin.

[0047] like Figures 1 to 4 As shown, the connecting ring assembly 50 also includes a fourth connecting ring 54. Along the axial direction of the mounting shaft 30, the fourth connecting ring 54 is located between the third connecting ring 53 and the cover 60. The fourth connecting ring 54 is in contact with the third connecting ring 53 and also in contact with the cover 60. Since the second connecting ring 52 is in stop engagement with the second stop surface 45, and the third connecting ring 53 is located on one side of the second connecting ring 52, the second connecting ring 52, the third connecting ring 53, and the fourth connecting ring 54 can be constrained between the second stop surface 45 and the cover 60. This allows the positions of the second connecting ring 52, the third connecting ring 53, and the fourth connecting ring 54 to be fixed, facilitating installation and further enhancing the structural stability and mechanical strength of the rolling pin.

[0048] Furthermore, in the axial direction of the mounting shaft 30, the fourth connecting ring 54 and the second connecting ring 52 are respectively located on both sides of the third connecting ring 53. This allows the fourth connecting ring 54 and the second connecting ring 52 to limit the movement of the third connecting ring 53 along the axial direction of the mounting shaft 30, making the setting of the third connecting ring 53 more stable and reliable, thereby further improving the sealing effect of the sealing ring 531. Setting the sealing ring 531 on the third connecting ring 53, which is separate from the fourth connecting ring 54, reduces the radial length of the third connecting ring 53, facilitating the installation of the sealing ring 531 on the third connecting ring 53, and also facilitating the machining of the first annular groove on the third connecting ring 53, thus reducing machining costs.

[0049] In some embodiments, the fourth connecting ring 54 is located on one side of the end of the mounting shaft 30 to reduce interference between the mounting shaft 30 and the cover 60, allowing the cover 60 to reliably cover the second opening 47. The inner diameter of the fourth connecting ring 54 is larger than the inner diameter of the second connecting ring 52, and the inner diameter of the fourth connecting ring 54 is larger than the inner diameter of the third connecting ring 53 to reduce processing costs. The fourth connecting ring 54 is clearance-fitted, transition-fitted, or interference-fitted with the third cylindrical section 44.

[0050] In some embodiments, the thickness-fixing disc 20 is sleeved on the mounting shaft 30, and the thickness-fixing disc 20 is located between the rolling cylinder 10 and the handle sleeve 40. The rolling pin includes multiple sets of thickness-fixing discs 20 with different diameters. One set of thickness-fixing discs 20 can be selectively mounted on the mounting shaft 30 to adjust the rolling thickness of the rolling pin, thereby improving the flexibility and versatility of the rolling pin. One set of thickness-fixing discs 20 includes two thickness-fixing discs 20 with the same diameter. The mounting shaft 30 is fixedly connected to the inner wall of the rolling cylinder 10 via a connecting rod.

[0051] In this embodiment, the first connecting ring 51, the second connecting ring 52, the third connecting ring 53, and the fourth connecting ring 54 are all made of polymer rubber.

[0052] Furthermore, the rolling cylinder 10 is cylindrical and has a first outer diameter D1; the thickness-fixing plate 20 is a disc and has a second outer diameter D2. The relationship between D1 and D2 satisfies: 2.0mm ≤ D2 - D1 ≤ 4.0mm. By limiting the relationship between D1 and D2, the rolling thickness of the dough can be adjusted, effectively avoiding dough accumulation and uneven thickness during the rolling process, thus improving the uniformity of product thickness and the product qualification rate.

[0053] Preferably, D2-D1 is 2.0mm, 2.3mm, 2.5mm, 2.7mm, 3.0mm, 3.2mm, 3.5mm, 3.7mm or 4.0mm.

[0054] Furthermore, the diameter of the mounting shaft 30 is D3, which satisfies the following condition: 9.0mm ≤ D3 ≤ 12.0mm. By setting the diameter of the mounting shaft 30, it is ensured to possess sufficient rigidity and strength, effectively resisting bending moments during the rolling process, reducing bending deformation caused by external forces, and extending the lifespan of the rolling pin. The selection of the diameter range fully considers the actual usage scenarios of the rolling pin, ensuring both the stability and reliability of the mounting shaft 30 under heavy rolling pressure, while also taking into account the overall structural lightness and operational comfort. This improves the durability and operational performance of the rolling pin in high-intensity rolling operations, avoiding handle misalignment and uneven rolling caused by bending of the mounting shaft 30, thereby improving product processing quality and efficiency.

[0055] Preferably, the diameter D3 of the mounting shaft 30 is 9.0mm, 9.5mm, 10.0mm, 10.5mm, 11.0mm, 11.5mm or 12.0mm.

[0056] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rolling pin characterized in that, include: Rolling mill (10); A thickness plate (20) is disposed at at least one end of the rolling cylinder (10). The thickness plate (20) protrudes out of the circumferential outer side of the rolling cylinder (10), and the central axis of the thickness plate (20) is collinear with the central axis of the rolling cylinder (10). The mounting shaft (30) is fixedly connected to the rolling cylinder (10), and the mounting shaft (30) extends to the side of the thickness plate (20) away from the rolling cylinder (10); The handle sleeve (40) is rotatably fitted onto the outside of the mounting shaft (30); A connecting ring assembly (50) is disposed inside the handle sleeve (40). The connecting ring assembly (50) is sleeved on the outside of the mounting shaft (30), and the connecting ring assembly (50) and the mounting shaft (30) are in transition fit or clearance fit.

2. The rolling pin according to claim 1, characterized in that, The handle sleeve (40) includes a first cylindrical section (41) and a second cylindrical section (42) communicating with the first cylindrical section (41). The inner diameter of the first cylindrical section (41) is smaller than the inner diameter of the second cylindrical section (42) so as to form a first stop surface (43) on the inner sidewall of the handle sleeve (40) at an angle to the central axis of the handle sleeve (40). The connecting ring assembly (50) includes a first connecting ring (51) disposed between the mounting shaft (30) and the handle sleeve (40). The first connecting ring (51) has an inner ring surface, an outer ring surface, and a connecting surface connecting the inner ring surface and the outer ring surface. The inner ring surface is in transition fit or clearance fit with the mounting shaft (30). The outer ring surface is in interference fit with the inner sidewall of the second cylindrical section (42). The connecting surface is in stop fit with the first stop surface (43).

3. The pasta rolling pin of claim 2, wherein, The first end of the handle sleeve (40) has a first opening (46), and the second cylindrical section (42) forms the first opening (46) at the end opposite to the first cylindrical section (41). The first opening (46) is disposed toward the thickness plate (20).

4. The rolling pin according to claim 1, characterized in that, The handle sleeve (40) includes a first cylindrical section (41) and a third cylindrical section (44) communicating with the first cylindrical section (41). The inner diameter of the first cylindrical section (41) is smaller than the inner diameter of the third cylindrical section (44) to form a second stop surface (45) on the inner sidewall of the handle sleeve (40) at an angle to the central axis of the handle sleeve (40). The connecting ring assembly (50) includes a second connecting ring (52), which includes a first ring segment (521) and a second ring segment (522) connected to the first ring segment (521). The diameter of the first ring segment (521) is larger than the diameter of the second ring segment (522) to form a third stop surface between the first ring segment (521) and the second ring segment (522). The first ring segment (521) is located between the third cylindrical segment (44) and the mounting shaft (30), and the second ring segment (522) is located between the first cylindrical segment (41) and the mounting shaft (30). The third stop surface and the second stop surface (45) stop and cooperate with each other.

5. The pasta rolling pin of claim 4, wherein, The connecting ring assembly (50) further includes a third connecting ring (53) and a sealing ring (531). The third connecting ring (53) is disposed between the third cylindrical section (44) and the mounting shaft (30). The third connecting ring (53) is located on the side of the second connecting ring (52) away from the first cylindrical section (41). A first ring groove is provided on the inner ring wall of the third connecting ring (53), and part of the sealing ring (531) is located in the first ring groove.

6. The pasta rolling pin of claim 5, wherein, A second annular groove (31) is provided on the outer circumferential side of the mounting shaft (30), and part of the sealing ring (531) is located in the second annular groove (31).

7. The pasta rolling pin of claim 5, wherein, The second end of the handle sleeve (40) has a second opening (47), and the third cylindrical section (44) forms the second opening (47) at one end away from the first cylindrical section (41). The second opening (47) is disposed away from the thickness plate (20). The rolling pin also includes a cover (60) covering the second opening (47).

8. The pasta rolling pin of claim 7, wherein, The inner wall of the third cylindrical section (44) opposite to the first cylindrical section (41) is provided with an internal thread section (441), and the cover (60) is provided with an external thread (61) that mates with the internal thread section (441).

9. The pasta rolling pin of claim 7, wherein, The connecting ring assembly (50) further includes a fourth connecting ring (54), which is located between the third connecting ring (53) and the cover (60) along the axial direction of the mounting shaft (30). The fourth connecting ring (54) is in contact with the third connecting ring (53) and the cover (60).

10. The rolling pin according to claim 1, characterized in that, The rolling cylinder (10) is a cylinder with a first outer diameter D1; the thickness-fixing plate (20) is a plate with a second outer diameter D2, and the relationship between D1 and D2 satisfies: 2.0mm ≤ D2 - D1 ≤ 4.0mm; and / or, The diameter of the mounting shaft (30) is D3, which satisfies: 9.0mm≤D3≤12.0mm.

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