Magnetic splicing toy

Abstract

The utility model relates to a magnetic splicing toy, which is characterized in that a first magnetic connecting piece and a second magnetic connecting piece are respectively arranged on a female plate and a male plate, and when two splicing modules are connected, the two splicing modules are tightly attached under the action of magnetic force, so that the common loosening phenomenon in the traditional magnetic toy is effectively prevented; therefore, the overall stability of the spliced toy is improved. The arrangement of the inserting grooves and the inserting columns and the arrangement of the connecting grooves and the connecting columns allow a user to freely combine the splicing modules of different shapes and sizes according to personal preferences, and various structural constructions from simple to complex are achieved. Meanwhile, the detachable connection mode enables players to easily split and recombine, and the structural flexibility of the product is improved. The connecting columns are inserted into the connecting grooves in a one-to-one correspondence mode, and accurate alignment between the splicing modules is guaranteed. Therefore, the problem that the structure is unstable due to position deviation is avoided, meanwhile, the operation steps are simplified, and the splicing process is smoother and more natural.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of toys, especially to a magnetic connection toy. BACKGROUND

[0002] The magnetic connection toy is a kind of popular puzzle in recent years, which is characterized by the built-in or external magnet to attract and connect different toy components together to form various shapes and structures. This design not only increases the fun and creativity of play, but also promotes the development of children's spatial thinking ability and hand-eye coordination. Common magnetic connection toys include but are not limited to magnetic pieces, magnetic building blocks, magnetic connection toy cars, magnetic connection toy ships or other magnetic connection models.

[0003] However, in actual use, it is found that although the flexible connection between components is achieved by magnetic elements, the connection parts of these toys are prone to come off. This loosening seriously affects the stability and integrity of the toy structure. SUMMARY

[0004] The utility model provides a kind of magnetic connection toy, which can solve the problem of easy loosening of magnetic connection position.

[0005] The utility model provides a kind of magnetic connection toy, which can solve the problem of easy loosening of magnetic connection position.

[0006] A plurality of connection modules; and

[0007] At least one insertion device, the insertion device includes a female plate, a male plate, a first magnetic connection component and a second magnetic connection component, the female plate is provided with a slot, a plurality of connection slots are formed in the slot, the male plate is provided with a plug column, a plurality of connection columns are provided on the plug column, the first magnetic connection component is arranged on the female plate, and the second magnetic connection component is arranged on the male plate.

[0008] At least two connection modules are respectively provided with the female plate and the male plate, the plug column can be detachably inserted into the slot, so that each connection column is one-to-one correspondingly detachably inserted into each connection slot, and the first magnetic connection component and the second magnetic connection component are magnetically attracted and matched, thereby fixing the relative position of the two connection modules.

[0009] Preferably, the female plate is further provided with a plurality of positioning slots, and each positioning slot is located outside the slot.

[0010] The male plate is further provided with a plurality of positioning columns, each positioning column is spaced apart from the plug column, and each positioning column is one-to-one correspondingly detachably inserted into each positioning slot.

[0011] Preferably, a receiving groove is formed in the center of the slot, and a plurality of fixing ribs are arranged on the groove wall of the receiving groove, and the first magnetic connection member is arranged in the receiving groove, and each fixing rib abuts against the first magnetic connection member.

[0012] Preferably, the part of the male plate is deformed to form the insertion column on one surface and a clearance groove on the other surface of the male plate.

[0013] The insertion column is provided with a clearance hole which is communicated with the clearance groove, and the second magnetic connection member is arranged in the clearance groove and exposed in the clearance hole.

[0014] Preferably, a plurality of elastic columns are arranged on the groove wall of the clearance groove, each elastic column is provided with a mounting guide surface which faces the center of the clearance groove, and the second magnetic connection member is clamped between the elastic column and the groove bottom of the clearance groove.

[0015] Preferably, one of the first magnetic connection member and the second magnetic connection member comprises a magnetic member, and the other of the first magnetic connection member and the second magnetic connection member comprises a metal member, and the magnetic member and the metal member are magnetically connected.

[0016] The first magnetic connection member comprises a first magnetic member, the second magnetic connection member comprises a second magnetic member, and the first magnetic member and the second magnetic member are magnetically connected.

[0017] Preferably, one of the first magnetic connection member and the second magnetic connection member comprises a magnetic member, and the other of the first magnetic connection member and the second magnetic connection member comprises a metal member, and the magnetic member and the metal member are magnetically connected.

[0018] Preferably, the magnetic connection toy further comprises a rotating connection device, and at least two of the connection modules are connected through the rotating connection device, so that the two connection modules can rotate relative to each other.

[0019] Preferably, the magnetic connection toy further comprises a plurality of rollers, and each roller is rotatably arranged on at least part of the connection modules.

[0020] Preferably, one of the connection modules comprises a cylinder and a rod, one end of the cylinder is connected to another connection module, and the rod is slidably arranged in the cylinder.

[0021] The implementation of the present application has the following beneficial effects:

[0022] The utility model relates to a kind of magnetic attraction splicing toys, by being respectively provided with first magnetic attraction connecting piece and second magnetic attraction connecting piece on female board and male board, when two splicing modules are connected, magnetic force makes both closely adhere, effectively prevent the common unfastening phenomenon in traditional magnetic attraction toy, to improve the overall stability of splicing toy.

[0023] The setting of the slot and the plug post, the connecting slot and the connecting post allows users to freely combine splicing modules of different shapes and sizes according to personal preferences, achieving a variety of structure constructions from simple to complex. At the same time, the detachable connection mode allows players to easily disassemble and reassemble, improving the structural flexibility of the product.

[0024] Each connecting post is inserted into the connecting slot one-to-one, ensuring accurate alignment between each splicing module. In this way, the problem of unstable structure caused by positional deviation is avoided, and the operation steps are simplified, making the assembly process more smooth and natural. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects, features and advantages of the present utility model will become more apparent from the following detailed description of exemplary embodiments of the present utility model, taken in conjunction with the accompanying drawings, in which like reference numerals are generally used to refer to similar components throughout the various figures. In the drawings:

[0026] Figure 1 is a structural schematic diagram of the magnetic attraction splicing toy in some embodiments of the present utility model;

[0027] Figure 2 is a structural schematic diagram of the magnetic attraction splicing toy from another angle; Figure 1

[0028] Figure 3 is an exploded view of the magnetic attraction splicing toy in some embodiments of the present utility model.

[0029] Figure 4 is an exploded view of the magnetic attraction splicing toy from another angle; Figure 3

[0030] Figure 5 is a structural schematic diagram of the plug-in device in some embodiments of the present utility model;

[0031] Figure 6 is a structural schematic diagram of the plug-in device from another angle; Figure 5

[0032] Figure 7 is an exploded view of the plug-in device in some embodiments of the present utility model.

[0033] Figure 8 ​​​is a structural schematic view of the magnetic attraction splicing toy in the second embodiment of the utility model;

[0034] Figure 9 is Figure 8 is an explosion view of the magnetic attraction splicing toy shown in the figure;

[0035] Figure 10 is a structural schematic view of the magnetic attraction splicing toy in the third embodiment of the utility model;

[0036] Figure 11 is Figure 10 is an explosion view of the magnetic attraction splicing toy shown in the figure;

[0037] Figure 12 is a structural schematic view of the magnetic attraction splicing toy in the fourth embodiment of the utility model;

[0038] Figure 13 is Figure 12 is an explosion view of the magnetic attraction splicing toy shown in the figure. DETAILED DESCRIPTION

[0039] Embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art.

[0040] It should be understood that although the terms "first", "second", "third" and the like can be used to describe various information in the present application, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0042] Unless otherwise defined, the terms "mounting", "connected", "connecting", "fixed", and the like are to be construed in a broad sense, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] Figure 1 The magnetic attraction splicing toy 10 in some embodiments of the utility model is shown, and the shape of the magnetic attraction splicing toy 10 can be flexibly designed according to actual needs. For example, as shown in the figure, it can be configured as an airplane, a ship, a vehicle and the like, wherein the selection of the vehicle category is particularly extensive, covering different types of vehicles such as a sedan, a loading truck, a mixer truck and a crane. This highly customized possibility is not limited to vehicles, but can be extended to any other object. Figures 8 to 13

[0044] As shown in the figure, the magnetic attraction splicing toy 10 comprises a plurality of splicing modules 1 and at least one plug-in device 2, the plug-in device 2 comprises a female plate 21, a male plate 22, a first magnetic attraction connecting piece 23 and a second magnetic attraction connecting piece 24, the female plate 21 is provided with a plug-in groove 211, a plurality of connecting grooves 212 are formed in the plug-in groove 211, the male plate 22 is provided with a plug-in column 221, a plurality of connecting columns 222 are arranged on the plug-in column 221, the first magnetic attraction connecting piece 23 is arranged on the female plate 21, and the second magnetic attraction connecting piece 24 is arranged on the male plate 22. Figures 1 to 7

[0045] At least two splicing modules 1 are respectively provided with the female plate 21 and the male plate 22, the plug-in column 221 can be detachably inserted into the plug-in groove 211, so that each connecting column 222 is detachably inserted into each connecting groove 212 in a one-to-one correspondence, and the first magnetic attraction connecting piece 23 and the second magnetic attraction connecting piece 24 are magnetically attracted and matched, thereby fixing the relative positions of the two splicing modules 1.

[0046] As can be understood, the female plate 21 is provided with the plug-in groove 211, and a plurality of connecting grooves 212 are formed in the plug-in groove 211. These connecting grooves 212 are used to accommodate the connecting columns 222 from the male plate 22 and ensure the precise butt joint between the two. The male plate 22 is provided with the plug-in column 221 which can be inserted into the plug-in groove 211 of the female plate 21. The plug-in column 221 is distributed with the connecting columns 222 which are equal in number and corresponding in position to the connecting grooves 212. The first magnetic attraction connecting piece 23 is installed on the female plate 21, and the second magnetic attraction connecting piece 24 is fixed on the male plate 22. When the two splicing modules 1 are spliced, the two magnetic attraction connecting pieces will attract each other, thereby strengthening the bonding strength of the two.

[0047] ​​It should be noted that when two or more splicing modules 1 need to be combined together, they only need to align the insertion column 221 on one splicing module 1 with the male plate 22 with the insertion slot 211 on another splicing module 1 (with the female plate 21) and insert. In this process, the connecting column 222 on the insertion column 221 will enter the corresponding connecting slot 212 in turn. At the same time, the magnetic force generated between the first magnetic connection 23 and the second magnetic connection 24 will help to lock the two parts (two splicing modules 1) and prevent them from being easily separated. In addition, since all connections are detachable, users can adjust or recombine at any time according to their own preferences.

[0048] As shown in Figures 2 to 7 , in some embodiments of the magnetic splicing toy 10, the female plate 21 is also provided with a plurality of positioning grooves 213, each of which is located outside the insertion slot 211;

[0049] The male plate 22 is also provided with a plurality of positioning columns 223, each of which is spaced apart from the insertion column 221, and each of which is detachably inserted into each of the positioning grooves 213.

[0050] It can be understood that the cooperation of the positioning groove 213 and the positioning column 223 provides an additional mechanical locking function for the splicing module. This double locking mechanism makes the spliced model more stable and effectively prevents loosening caused by external impact or slight collision.

[0051] As shown in Figures 2 to 7 , in some embodiments of the magnetic splicing toy 10, the center of the insertion slot 211 is provided with a containing groove 214, and a plurality of fixed ribs 215 are arranged on the groove wall of the containing groove 214. The first magnetic connection 23 is arranged in the containing groove 214, and each fixed rib 215 abuts against the first magnetic connection.

[0052] It can be understood that by arranging the first magnetic connection 23 in the containing groove 214 and abutting it with the fixed rib 215, the displacement of the magnetic connection during use can be effectively prevented. The arrangement of the containing groove 214 enables the first magnetic connection 23 to be better integrated into the structure of the female plate 21, reducing the need for additional space and helping to achieve the overall miniaturization and compactness of the toy.

[0053] As shown in Figures 2 to 7 , in some embodiments of the magnetic splicing toy 10, part of the male plate 22 is deformed to form an insertion column 221 on one surface and an avoidance groove 224 on the other surface of the male plate;

[0054] The center of the insertion column 221 is provided with an avoiding hole 225, which is communicated with the avoiding slot 224. The second magnetic connection member 24 is arranged in the avoiding slot 224 and exposed in the avoiding hole 225.

[0055] It can be understood that, by forming the protruding structure on the public plate 22 to create the insertion column 221, the space on the back thereof is ingeniously utilized to arrange the avoiding slot 224. This design effectively utilizes the three-dimensional space, avoids additional increase in thickness or volume, and helps to maintain the overall compactness of the toy. The avoiding slot 224 provides an ideal arrangement position for the second magnetic connection member 24, and the avoiding hole 225 ensures that the magnetic connection member can be accurately exposed to effectively cooperate with the first magnetic connection member 23 on the female plate 21.

[0056] As shown in Figures 2 to 7 some embodiments of the magnetic connection toy 10, a plurality of elastic columns 2241 are arranged on the slot wall of the avoiding slot 224. Each elastic column 2241 is provided with a mounting guide surface 2242, which faces the center of the avoiding slot 224. The second magnetic connection member 24 is clamped between the elastic column 2241 and the slot bottom of the avoiding slot 224.

[0057] It can be understood that the arrangement of the elastic column 2241 provides additional support and fixing force, so that the second magnetic connection member 24 can be firmly clamped in the avoiding slot 224 after installation. Even if subjected to external impact or vibration, the second magnetic connection member is not easy to loosen or fall off, thereby ensuring the stability and reliability of long-term use.

[0058] The arrangement of the mounting guide surface 2242 greatly simplifies the installation steps of the second magnetic connection member 24; only need to push the magnetic connection member along the guide surface, which can be automatically aligned and clamped into the predetermined position. Not only improves the installation efficiency, but also reduces the risk of installation errors caused by misoperation.

[0059] As shown in Figures 2 to 7 some embodiments of the magnetic connection toy 10, one of the first magnetic connection member 23 and the second magnetic connection member 24 comprises a magnetic member, and the other comprises a metal member. The magnetic member and the metal member are magnetically connected.

[0060] It can be understood that one of them includes a magnetic member (such as a permanent magnet), and the other includes a metal member (such as iron, nickel or cobalt, etc. easily magnetized material). The magnetic member and the metal member are attracted to each other by magnetic force, thereby realizing the fixed connection of the two. This design is simple and low in cost, and is suitable for application scenarios that require basic magnetic function.

[0061] As shown in Figures 2 to 7As shown, in some embodiments of the magnetic assembly toy 10, the first magnetic connector 23 includes a first magnetic element, the second magnetic connector 24 includes a second magnetic element, and the first magnetic element and the second magnetic element are magnetically connected.

[0062] Understandably, the first magnetic connector 23 includes a first magnetic element, and the second magnetic connector 24 includes a second magnetic element; the two are attracted to each other and connected by their respective magnetic fields. This design allows for more precise control of the magnetic force and its range of action, and provides bidirectional or multidirectional adsorption capabilities.

[0063] like Figures 2 to 7 As shown, in some embodiments of the magnetic assembly toy 10, each assembly module 1 is provided with a plug-in device 2, and two assembly modules 1 are connected through the plug-in device 2.

[0064] Understandably, each plug-in device 2 includes a female board 21 and a male board 22, as well as corresponding magnetic connectors (such as a first magnetic connector 23 and a second magnetic connector 24). This design ensures that two adjacent splicing modules 1 can be tightly connected, preventing loosening or accidental separation.

[0065] Because each assembly module 1 is equipped with a plug-in device 2, users can freely combine modules of different shapes and sizes according to their own creativity to assemble various complex structures. This feature greatly enhances the structural flexibility of the toy.

[0066] like Figures 2 to 7 As shown, in some embodiments of the magnetic assembly toy 10, the magnetic assembly toy 10 also includes a rotating connection device, through which at least two assembly modules 1 are connected, so that the two assembly modules 1 can rotate relative to each other.

[0067] Understandably, the rotating connection device allows the splicing modules 1 to not only be fixedly connected but also to rotate freely within a certain range. This makes it possible to construct more complex and variable structures, such as dynamic models simulating robotic arms, rotating platforms, or movable joints.

[0068] It should be noted that although this invention incorporates rotational characteristics, the rotating connection device still ensures a stable connection between the splicing modules 1. It typically includes a shaft, bearings, or other similar mechanical components to ensure smooth rotation without easily loosening.

[0069] like Figures 8 to 13 As shown, in some embodiments of the magnetic assembly toy 10, the magnetic assembly toy 10 also includes a plurality of rollers 3, each roller 3 being rotatably disposed on at least a portion of the assembly module 1.

[0070] It is understandable that by installing the roller 3 on the splicing module 1, the entire magnetic splicing toy 10 or part of its structure can realize rolling movement. This feature is particularly suitable for building models such as vehicles and robots that require movement functions, greatly improving the realism and game experience of the toy.

[0071] The presence of the roller 3 not only increases the physical movement ability of the toy, but also provides more creative possibilities for the player. For example, a small car that can be pushed, a walking mechanical organism, or other works with dynamic effects can be built, enhancing the interest and interactivity of the game.

[0072] Adapt to different ground environment: According to the needs of different application scenarios, the roller 3 can be designed to be suitable for various ground materials (such as smooth table surface, carpet, etc.). This ensures that the toy can move smoothly whether indoors or outdoors, expanding the use scenarios.

[0073] Simplify the construction process: The roller 3 usually adopts an easy-to-install design, and users can add or remove it at any time during the construction process. This modular design reduces the difficulty of operation, making it easy for children to complete the construction of complex models.

[0074] As shown in Figure 12 and Figure 13 , in some embodiments of the magnetic splicing toy 10, one of the splicing modules 1 includes a barrel 11 and a rod 12, one end of the barrel 11 is connected to another splicing module 1, and the rod 12 is slidingly arranged in the barrel 11.

[0075] It is understandable that one of the splicing modules 1 includes a barrel 11 and a rod 12. One end of the barrel 11 is connected to another splicing module 1, and the rod 12 is slidingly arranged in the barrel 11. This design allows the rod 12 to perform extension and retraction movements relative to the barrel 11, thereby providing additional dynamic characteristics and functional expansion for the toy.

[0076] By slidingly arranging the rod 12 in the barrel 11, users can adjust the degree of extension or retraction of the rod 12 as needed. This not only increases the diversity of connection methods between splicing modules 1, but also makes it possible to build structures with adjustable length, such as telescopic arms, antennas, etc.

[0077] The implementation of the present utility model has the following beneficial effects:

[0078] The utility model relates to a magnetic splicing toy, by setting up first magnetic attraction connecting piece and second magnetic attraction connecting piece on female board and male board, when two splicing modules are connected, magnetic force makes them tightly adhere, effectively prevent the phenomenon of traditional magnetic splicing toy from loosening, thereby improve the overall stability of splicing toy.

[0079] The setting of the slots and the columns, the connecting slots and the connecting columns allows users to freely combine the splicing modules of different shapes and sizes according to personal preferences, realizing the construction of various structures from simple to complex. Meanwhile, the detachable connecting mode enables players to easily disassemble and recombine, improving the structural flexibility of the product.

[0080] Each connecting column is inserted into the connecting slot in one-to-one correspondence, ensuring the accurate alignment between each splicing module. In this way, the problem of unstable structure caused by position deviation is avoided, and the operation steps are also simplified, making the assembly process more smooth and natural.

[0081] The scheme of the present application has been described in detail above with reference to the drawings. In the above examples, the description of each example has its own emphasis, and the parts not described in detail in a certain example can be referred to the related description of other examples. It should be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the present application. In addition, it can be understood that the steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device of the embodiments of the present application can be combined, divided and reduced according to actual needs.

[0082] The above has described each embodiment of the present application, and the above description is exemplary, not exhaustive, and is not limited to each disclosed embodiment. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical application or improvement of technology in the market of each embodiment, or to enable other ordinary skilled persons in the art to understand each embodiment disclosed herein.

Claims

1. A magnetic coupling toy, characterized by, The application relates to a magnetic splicing toy. The magnetic splicing toy comprises a plurality of splicing modules and at least one plug-in device. The plug-in device comprises a female plate, a male plate, a first magnetic connection component and a second magnetic connection component. The female plate is provided with a plug-in slot, and a plurality of connecting slots are formed in the plug-in slot. The male plate is provided with a plug-in column, and a plurality of connecting columns are formed on the plug-in column.

2. The magnetic coupling toy according to claim 1, wherein The first magnetic connection component is arranged on the female plate, and the second magnetic connection component is arranged on the male plate. At least two splicing modules are respectively provided with the female plate and the male plate.

3. The magnetic coupling toy according to claim 1, wherein The plug-in column can be detachably inserted into the plug-in slot, so that each connecting column is detachably inserted into each connecting slot.

4. The magnetic connection toy according to claim 1 or 3, characterized in that, The first magnetic connection component and the second magnetic connection component are magnetically attracted and matched, thereby fixing the relative positions of two splicing modules. The female plate is further provided with a plurality of positioning slots, and each positioning slot is located outside the plug-in slot.

5. The magnetic coupling toy according to claim 4, wherein The male plate is further provided with a plurality of positioning columns, and each positioning column is arranged at intervals with the plug-in column.

6. The magnetic coupling toy of claim 1, wherein, Each positioning column is detachably inserted into each positioning slot. The center of the plug-in slot is provided with a containing slot, and a plurality of fixed ribs are arranged on the slot wall of the containing slot.

7. The magnetic coupling toy of claim 1, wherein, The first magnetic connection component is arranged in the containing slot, and each fixed rib is abutted on the first magnetic connection component.

8. The magnetic coupling toy of claim 1, wherein, Part of the male plate is deformed to form the plug-in column on one surface and a position-avoiding slot on the other surface.

9. The magnetic coupling toy of claim 1, wherein, The center of the plug-in column is provided with a position-avoiding hole, and the position-avoiding hole is communicated with the position-avoiding slot.

10. The magnetic coupling toy of claim 1, wherein, The second magnetic connection component is arranged in the position-avoiding slot, and the second magnetic connection component is exposed in the position-avoiding hole. The slot wall of the position-avoiding slot is provided with a plurality of elastic columns, and each elastic column is provided with a mounting guide surface. The mounting guide surface faces the center of the position-avoiding slot, and the second magnetic connection component is clamped between the elastic column and the slot bottom of the position-avoiding slot. One of the first magnetic connection component and the second magnetic connection component comprises a magnetic component, and the other comprises a metal component. The first magnetic connection component comprises a first magnetic component, and the second magnetic connection component comprises a second magnetic component. The first magnetic component and the second magnetic component are magnetically connected. One plug-in device is arranged between each splicing module, and two splicing modules are connected through the plug-in device. The magnetic splicing toy further comprises a rotating connection device. At least two splicing modules are connected through the rotating connection device, so that two splicing modules can rotate relative to each other. The magnetic splicing toy further comprises a plurality of rollers. One splicing module comprises a cylinder and a rod. One end of the cylinder is connected to another splicing module, and the rod is slidingly arranged in the cylinder.

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