Detachable cross-shaped stick

Abstract

The utility model discloses a detachable cross-shaped stick, comprising two sticks and a connector; the connector comprises two corresponding connecting members, each connecting member comprises: a beam portion, the beam portion is tightly attached to the outer side of each stick, and two U-shaped ribs are respectively located at two ends of the beam portion and are parallel to each other; the arc branches of the U-shaped ribs extend from the outer side to the inner side along the outer wall of the stick, the end of each arc branch constitutes an inner end face, the four inner end faces are evenly distributed on a plane to form a symmetrical arrangement of a quadrilateral, and these inner end faces jointly define a butt end face; the butt end face of the first connecting member and the butt end face of the second connecting member cooperate with each other through a detachable connecting structure; when the two sticks are configured as a cross or arranged in parallel, the butt end face of the first connecting member can be separated and joined with the butt end face of the second connecting member through the connecting structure, so as to increase the use scenarios of the cross-shaped stick.

Description

Technical Field

[0001] The utility model relates to a cross-shaped body stick for posture correction, in particular to a detachable cross-shaped body stick, comprising two sticks and a detachable connector, so that the body stick can be switched between a cross-shaped frame in a use state and a storage state. Background Art

[0002] The body stick, as an auxiliary tool, is mainly used to correct the curvature and tilt of the human back and help people maintain an upright back posture. This tool not only plays an important role in daily study and work, but is also widely used in sports such as yoga, and is sometimes called a cross yoga stick.

[0003] The body stick is composed of the following parts: Connector: used to connect two sticks to form a cross-shaped frame structure. Sticks: Two sticks are respectively inserted into the mounting holes of the connector and fixed to form the main body of the cross-shaped frame.

[0004] When in use, the cross-shaped frame structure of the body stick is placed against the back, the horizontal stick is clamped by the arms, and the vertical stick is placed vertically against the back to correct the back posture.

[0005] CN214157611U body stick: This body stick consists of a first connecting seat, a second connecting seat and two sticks that are hinged to each other. The sticks are fixed on the two connecting seats respectively to form a stable cross-shaped frame structure. CN217286215U back posture corrector: This corrector includes a connector, a first stick and a second stick. The connector consists of a first connecting seat, a second connecting seat and an axle pin. The two connecting seats are connected by an axle pin, allowing rotation and increasing flexibility. The first connecting seat is provided with a first through hole for the first stick to penetrate, and the second connecting seat is provided with a second through hole for the second stick to penetrate; the axle pin passes through the two sticks in sequence to ensure the stability of the structure.

[0006] Although the existing cross-shaped stick can connect two sticks through a connector in the middle to achieve switching between the cross shape and the parallel state, this structure limits its application scenarios to a certain extent. Utility Model Content

[0007] In order to further expand the application scenarios of the cross-shaped body stick, the technical problem to be solved by the utility model is to provide a detachable cross-shaped body stick; the connector is set to a detachable structure, and after the connector is separated, the two sticks can be arranged in parallel and then closed and fixed with the connector; at the same time, in another usage scenario, the separated single stick can also be used by the user, which increases the usage scenarios of the body stick.

[0008] The technical solution adopted by the utility model to solve the above technical problems is: a detachable cross-shaped stick, including two sticks close to each other and a detachable and closable connector, wherein the connector keeps the two sticks close to each other in a cross state or a parallel state;

[0009] The connector includes a first connector and a second connector; each connector includes a beam portion that is adjacent to the outside of each stick and extends along the length direction of the stick, and two mutually parallel U-shaped ribs located at both ends of the beam portion, the beam portion is connected to the middle portion of the two U-shaped ribs to form four arc-shaped branches extending from the beam portion, and each arc-shaped branch extends along the outer wall of the stick toward the outside of the stick and toward the inside of the stick;

[0010] Each arc-shaped branch comprises an inner end face, the inner end faces of the four arc-shaped branches are adjacently and equidistantly distributed in a quadrilateral pattern, and the four inner end faces form a butt joint face; a detachable connection structure is provided between the butt joint face of the first connecting member and the butt joint face of the second connecting member;

[0011] When the two sticks are in a cross shape and / or parallel, the butt joint end surface of the first connecting member and the butt joint end surface of the second connecting member can be butt jointed with each other through the connecting structure.

[0012] A further preferred technical solution of the utility model is: the cross section of the stick is circular or quasi-circular, and the outer diameters of the two sticks are the same;

[0013] The four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

[0014] A further preferred technical solution of the present invention is that the connection structure is a plug-in structure with concave and convex fit.

[0015] A further preferred technical solution of the utility model is: the plug-in structure includes a protrusion on at least one inner end surface of the first connecting member and a recessed hole on at least one inner end surface of the second connecting member, and the protrusion is plug-fitted with the recessed hole by interference.

[0016] A further preferred technical solution of the utility model is: the first connecting member and the second connecting member have the same structure; one of the inner end surfaces of the connecting member is a convex portion, and the other three inner end surfaces are concave holes;

[0017] When the first stick and the second stick are in a cross-shaped state, the protrusion on the first connecting member and the protrusion on the second connecting member are located at a diagonal position;

[0018] When the first stick and the second stick are parallel, the protrusion on the first connecting member and the protrusion on the second connecting member are located at adjacent positions.

[0019] A further preferred technical solution of the utility model is: the material of the stick is wood, plastic or metal, and both ends of the stick are provided with silicone sleeves;

[0020] The material of the first connecting member and / or the second connecting member is silicone.

[0021] Another subject: a separable cross-shaped stick, comprising two sticks close to each other and a separable and closable connector, wherein the connector keeps the two sticks close to each other in a cross state and parallel to each other; the cross section of the stick is circular;

[0022] The connector includes a first connector and a second connector; each connector includes a beam portion that is adjacent to the outside of each stick and extends along the length direction of the stick, and two mutually parallel U-shaped ribs located at both ends of the beam portion, the beam portion is connected to the middle portion of the two U-shaped ribs to form four arc-shaped branches extending from the beam portion, and each arc-shaped branch extends along the outer wall of the stick toward the outside of the stick and toward the inside of the stick;

[0023] Each arc-shaped branch comprises an inner end face, the inner end faces of the four arc-shaped branches are distributed in adjacent and equidistant squares, and the four inner end faces form a butt joint face; a separable concave-convex fitting plug-in structure is provided between the butt joint face of the first connector and the butt joint face of the second connector;

[0024] The plug-in structure comprises a protrusion on at least one inner end surface of the first connecting member and a concave hole on at least one inner end surface of the second connecting member, wherein the protrusion is plug-fitted with the concave hole by interference fit;

[0025] When the two sticks are in a cross shape and / or parallel, the butt joint end surface of the first connecting member and the butt joint end surface of the second connecting member can be butt jointed with each other through the connecting structure.

[0026] A further preferred technical solution of the utility model is: the first connecting member and the second connecting member have the same structure; one of the inner end surfaces of the connecting member is a convex portion, and the other three inner end surfaces are concave holes;

[0027] When the first stick and the second stick form a cross, the raised portion on the first connecting member and the raised portion on the second connecting member are located at diagonal positions;

[0028] When the first stick and the second stick are parallel, the protrusion on the first connecting member and the protrusion on the second connecting member are located at adjacent positions;

[0029] The four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

[0030] A further preferred technical solution of the utility model is that the four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

[0031] A further preferred technical solution of the utility model is that the protrusion is spherical or dovetail-shaped, and the concave hole is a corresponding spherical hole and dovetail hole.

[0032] Another technical subject: a detachable cross-shaped stick, comprising two sticks, which are placed close to each other;

[0033] A connector for maintaining the two sticks in a cross-shaped or parallel arrangement; the connector comprises two corresponding connecting pieces, each of which comprises:

[0034] a beam portion which is attached to the outside of each stick and extends along the length of the stick;

[0035] Two U-shaped ribs are respectively located at two ends of the beam and are parallel to each other;

[0036] The arc-shaped branches of the U-shaped ribs extend from the outside to the inside along the outer wall of the stick, and the end of each arc-shaped branch forms an inner end face, and the four inner end faces are evenly distributed on a plane to form a symmetrical arrangement of a quadrilateral, and these inner end faces jointly define a pair of butt end faces;

[0037] The butt joint end face of the first connecting member cooperates with the butt joint end face of the second connecting member through a detachable connecting structure; when the two sticks are configured in a cross shape or arranged in parallel, the butt joint end face of the first connecting member can be separated and joined with the butt joint end face of the second connecting member through the connecting structure.

[0038] A further preferred technical solution of the utility model is: the connection structure is a plug-in structure with concave and convex fit; the plug-in structure specifically includes:

[0039] a protrusion formed on at least one inner end surface of the first connecting member;

[0040] a recessed hole formed on at least one inner end surface of the second connecting member;

[0041] The protrusion and the concave hole are fitted by interference, so as to achieve stable engagement between the first and second connecting members when locked, and separability of the first and second connecting members when unlocked;

[0042] The protrusion is spherical or dovetail-shaped, and the concave hole is a corresponding spherical hole and dovetail hole.

[0043] Compared with the prior art, the utility model has the advantages that the detachable cross-shaped body stick realizes diversified usage and efficient space utilization through its innovative connector setting. The body stick is composed of two sticks, which can be easily adjusted to a cross or parallel state through a connector to adapt to different fitness movements and training needs. The connector includes a first connecting member and a second connecting member with symmetrical structures, which form a stable supporting structure through a beam portion and a U-shaped rib. The arc-shaped branch ends of each connecting member constitute inner end faces, which are distributed in a four-corner symmetrical manner to ensure precise matching and stable connection with another stick.

[0044] The interference fit between the two connectors of the connector between the protrusion and the recess not only provides a secure connection, but also allows the user to quickly separate or assemble the body stick without any tools. Based on this connector, the user can quickly convert the body stick from a cross shape to a parallel state, or split it from a combined state into separate sticks to adapt to different fitness movements or training scenarios. In particular, each stick can be used independently, which increases the versatility of the equipment and allows users to choose to use a single or double stick according to their personal training plan or preference without having to configure an additional single body stick - users can save costs by purchasing a set of body sticks to meet a variety of training needs instead of purchasing multiple separate equipment.

[0045] In summary, the design of the detachable cross-shaped body stick not only provides easy disassembly and versatility, but also takes into account the convenience, safety and personalized needs of users, making it a practical and efficient fitness tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0047] Figure 1 The detachable cross-shaped stick is shown in the following figure. Figure 1 ;

[0048] Figure 2 The detachable cross-shaped stick is shown in the following figure. Figure 2 ;

[0049] Figure 3 The detachable cross-shaped stick is shown in the following figure. Figure 3 ;

[0050] Figure 4The detachable cross-shaped stick is shown in the following figure. Figure 4 ;

[0051] Figure 5 The detachable cross-shaped stick is shown in the following figure. Figure 5 ;

[0052] Figure 6 The detachable cross-shaped stick is shown in the unfolded state Figure 1 ;

[0053] Figure 7 The detachable cross-shaped stick is shown in the unfolded state Figure 2 ;

[0054] Figure 8 The detachable cross-shaped stick is shown in the closed state Figure 1 ;

[0055] Fig. 9 The detachable cross-shaped stick is shown in the closed state Figure 2 ;

[0056] Fig.10 The structure diagram of the first and second connecting members is shown in FIG. Figure 1 ;

[0057] Fig.11 The structure diagram of the first and second connecting members is shown in FIG. Figure 2 ;

[0058] Fig.12 Schematic diagram of the overall structure of a single connector. DETAILED DESCRIPTION

[0059] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0060] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. "First" and "second" are only for the purpose of making the description easier to understand, without any other directional meaning, and cannot be used as a limitation on the present utility model.

[0061] The detachable cross-shaped body stick 100 is designed to enhance strength, improve balance and enhance body coordination. The body stick structure provides an adjustable and multi-purpose fitness solution for users through its unique detachable and closable connector 20. The detachable cross-shaped body stick 100 includes two sticks 10 close to each other and a detachable and closable connector 20. The connector 20 keeps the two sticks 10 close to each other in a cross state or a parallel state to support specific exercise movements and training needs. Moreover, the two sticks 10 are combined or separated in two preset states through the connector 20, thereby realizing a variety of fitness applications.

[0062] As for the specific structure of the connector 20, the connector 20 includes two connectors, a first connector 21 and a second connector 22. Each connector includes a beam b1 leaning against the outside of each stick 10 and extending along the length direction of the stick 10 and two U-shaped ribs b2 located at both ends of the beam b1 and parallel to each other.

[0063] The beam b1 is connected to the middle portion of the two U-shaped ribs b2 to form four arc-shaped branches b3 extending from the beam b1 , and each arc-shaped branch b3 extends along the outer wall of the stick 10 toward the inside of the stick 10 .

[0064] The detachable connection structure between the first connector 21 and the second connector 22 allows the user to quickly disassemble or assemble the body stick as needed, which increases the convenience of use. The design of the beam b1 and the U-shaped rib b2 provides additional support along the length of the stick 10, increasing the mechanical grip between the connector 20 and the stick 10.

[0065] In addition, the design of the four arc-shaped branches b3 helps to achieve uniform force distribution between the connecting member and the stick 10, reduce local stress concentration, and improve the durability of the structure.

[0066] Each arc-shaped branch b3 includes an inner end face s, and the inner end faces s of the four arc-shaped branches b3 are adjacently and equidistantly distributed in a quadrilateral pattern, and the four inner end faces s form a butt end face. The butt end face formed by the inner end faces s of the arc-shaped branches b3 provides a smooth contact interface, so that the connector can fit tightly during connection, thereby improving the stability of the connection.

[0067] It should be noted that the four inner end faces s of each connecting member are evenly distributed on a plane to form a symmetrical arrangement of a quadrilateral, and these inner end faces s jointly define a butt end face. When the two sticks 10 are arranged in a cross shape or in parallel, the butt end face of the first connecting member 21 can be separated and joined with the butt end face of the second connecting member 22 through the connection structure.

[0068] A detachable connection structure is provided between the butt end surface of the first connection member 21 and the butt end surface of the second connection member 22. The connection structure is a concave-convex plug-in structure 30. The concave-convex plug-in structure 30 simplifies the connection and separation process, and the user can realize the rapid assembly and disassembly of the body stick without complicated operations.

[0069] The design of the connector 20 reduces the risk of accidental disconnection during high-intensity training, and the interference fit between the protrusion 31 and the recessed hole 32 ensures the firmness of the connection. When separation is required, only a certain external force is required to disconnect the first and second connectors.

[0070] When the two sticks 10 are in a cross shape and / or parallel, the butt joint end faces of the first connector 21 and the butt joint end faces of the second connector 22 can be butt jointed with each other through the connection structure 30, thereby reducing or even avoiding the formation of a gap after the two connectors are plugged in.

[0071] The connector 20, with its simple and exquisite design, brings visual harmony and beauty to the entire cross-shaped body stick 100. The smooth transition of the arc-shaped branch b3 not only gives the body stick 100 an elegant appearance, but also provides a support point that fits the human body curve better in actual use.

[0072] like Figure 2 and Figure 4 As shown in the figure, when the curved surfaces of the connectors are close to the human body, they can serve as support points and form effective contact with the supporting parts of the human body. This design is particularly important when doing body correction or balance training, because it can provide additional stability and comfort at key support points.

[0073] In addition, the ergonomic design of the connector 20 takes into account the need to reduce pressure points and improve comfort during various fitness activities. The inner end surface s of the arc-shaped branch b3 not only forms a butt end surface, but also disperses pressure and reduces local compression when in contact with the human body through its arc-shaped design, thereby improving the fitness experience and reducing discomfort during exercise.

[0074] Of course, if Figure 3 and Figure 5 As shown, when the body shape is relatively straight and the butt end faces of the connectors face the human body, they can provide more stable support points to help the user maintain balance when performing various corrective movements.

[0075] Preferably, the four inner end surfaces s of the connector are in the same plane, and the plane is substantially flush with the inner side of the stick 10. The inner end surfaces s in the same plane ensure that the connectors can be accurately docked, providing a stable and consistent connection interface, and the force is evenly distributed in the entire connection area.

[0076] The coplanarity of the four inner end faces s enables the two sticks 10 to fit closely after being plugged in, thereby improving the rigidity and bending resistance of the overall structure. Moreover, the plane is substantially flush with the inner side of the stick, so that after the first and second connectors are plugged in, the two sticks 10 can be closer to each other and the connection is tighter. Since the two sticks 10 are close together, the plug-in structure provided by the connector 20 can significantly increase the rigidity of the body stick 100, so that it exhibits better stability when subjected to external forces.

[0077] The cross section of the stick 10 is circular or quasi-circular, and the outer diameters of the two sticks 10 are the same; the sticks 10 with the same outer diameter improve interchangeability, and users can easily replace or reconfigure different sticks as needed. The circular or quasi-circular cross section can distribute pressure more evenly when subjected to force, reducing local stress concentration. The stick with a circular cross section is smoother in exercises that require rolling or rotating movements, increasing the flexibility of training. Moreover, the circular or quasi-circular stick provides a good sense of contact when held, which is suitable for long-term fitness training.

[0078] More specifically, the plug-in structure 30 includes a protrusion 31 on at least one inner end surface s of the first connecting member 21 and a recessed hole 32 on at least one inner end surface s of the second connecting member 22, and the protrusion 31 and the recessed hole 32 are plug-fitted by interference. Figures 10 to 12 As shown, one inner end face s on the first connector 21 is a protrusion 31, and the other three inner end faces s are recessed holes 32. The interference fit provides a strong holding force, ensuring that the connection is not easy to loosen when subjected to force, thereby increasing the safety of use. The design of the protrusion 31 and the recessed hole 32 makes the plug-in operation of the connector simple and intuitive, and the user can quickly complete the assembly.

[0079] In addition, the close fit between the protrusion 31 and the recessed hole 32 reduces relative movement, thereby reducing wear and extending the service life of the product. The interference fit structure can withstand repeated plugging and unplugging operations and is suitable for long-term use.

[0080] Moreover, the design of the plug structure 30 is compact, does not increase the extra volume, and maintains the simplicity and portability of the body stick 100. The cooperation between the protrusion 31 and the concave hole 32 is not exposed, which keeps the appearance of the body stick 100 neat and beautiful, and is not easy to wear.

[0081] The first connecting member 21 and the second connecting member 22 have the same structure, and can be used interchangeably, and there is no fixed way to match the stick; the two connecting members have the same structure, which can ensure the consistency of their mechanical properties. Moreover, connecting members with the same structure can simplify the production process, improve manufacturing efficiency, and reduce production costs.

[0082] When the first stick 11 and the second stick 12 are in a cross-shaped state, the protrusion 31 on the first connecting member 21 and the protrusion 31 on the second connecting member 22 are located at a diagonal position.

[0083] When the first stick 11 and the second stick 12 are parallel, the protrusion 31 on the first connecting member 21 and the protrusion 31 on the second connecting member 22 are located at adjacent positions.

[0084] In the cross-shaped state, the diagonal arrangement of the protrusions 31 may provide a more stable support structure; in the parallel arrangement state, the adjacent arrangement of the protrusions 31 makes the body stick 100 more compact, saves space, and is easy to carry and store. The arrangement of the protrusions 31 is intuitive and easy to understand, which is convenient for users to correctly plug and use according to their intuition.

[0085] Preferably, the material of the stick 10 is wood, plastic or metal. In addition, silicone sleeves are provided at both ends of the stick 10 to protect the ends of the stick and prevent damage to the floor or contact surface during use; they can provide good friction and increase stability when holding; the silicone material is wear-resistant and can extend the service life of the stick.

[0086] Preferably, the protrusion 31 is spherical or dovetail-shaped, and the concave hole 32 is a corresponding spherical hole and dovetail hole. Among them, the dovetail shape can provide more precise directional locking to ensure the stability of the connector in a specific direction.

[0087] More preferably, the material of the first connector 21 and / or the second connector 22 is silicone. Silicone has good flexibility, can withstand large deformation without permanent damage, and is suitable for repeated plugging and can also maintain its shape under long-term pressure. The soft nature of silicone can absorb impact force and reduce the noise generated by the connector during plugging and use.

[0088] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0089] The above is an introduction to the detachable cross-shaped stick provided by the utility model. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A detachable cross-shaped stick, characterized in that: It comprises two sticks close to each other and a connector that can be separated and closed, wherein the connector keeps the two sticks close to each other in a cross state or in a parallel state; The connector includes a first connector and a second connector; each connector includes a beam portion leaning against the outside of each stick and extending along the length direction of the stick and two mutually parallel U-shaped ribs located at both ends of the beam portion, the beam portion is connected to the middle part of the two U-shaped ribs to form four arc-shaped branches extending from the beam portion, and each arc-shaped branch extends along the outer wall of the stick toward the inside of the stick; Each arc-shaped branch comprises an inner end face, the inner end faces of the four arc-shaped branches are adjacently and equidistantly distributed in a quadrilateral pattern, and the four inner end faces form a butt joint end face; a detachable connection structure is provided between the butt joint end face of the first connecting member and the butt joint end face of the second connecting member; When the two sticks are in a cross shape and / or parallel, the butt joint end surface of the first connecting member and the butt joint end surface of the second connecting member can be butt jointed with each other through the connecting structure.

2. The detachable cross-shaped stick according to claim 1, characterized in that: The cross section of the stick is circular or quasi-circular, and the outer diameters of the two sticks are the same; The four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

3. The detachable cross-shaped stick according to claim 1, characterized in that: The connection structure is a plug-in structure with concave and convex fit.

4. The detachable cross-shaped stick according to claim 3, characterized in that: The plug-in structure comprises a protrusion on at least one inner end surface of the first connecting member and a recessed hole on at least one inner end surface of the second connecting member, wherein the protrusion is plug-fitted with the recessed hole by interference.

5. The detachable cross-shaped stick according to claim 3, characterized in that: The first connecting member and the second connecting member have the same structure; One of the inner end surfaces of the connecting piece is a convex portion, and the other three inner end surfaces are concave holes; When the first stick and the second stick are in a cross-shaped state, the protrusion on the first connecting member and the protrusion on the second connecting member are located at a diagonal position; When the first stick and the second stick are parallel, the protrusion on the first connecting member and the protrusion on the second connecting member are located at adjacent positions.

6. The detachable cross-shaped stick according to claim 1, characterized in that: The stick is made of wood, plastic or metal, and both ends of the stick are provided with silicone sleeves; The material of the first connecting member and / or the second connecting member is silicone.

7. A detachable cross-shaped body stick, characterized in that: It comprises two sticks close to each other and a connector that can be separated and closed, wherein the connector keeps the two sticks close to each other in a cross state and parallel to each other; the cross section of the stick is circular; The connector includes a first connecting member and a second connecting member; each connecting member includes a beam portion leaning against the outside of each stick and extending along the length direction of the stick and two mutually parallel U-shaped ribs located at both ends of the beam portion, the beam portion is connected to the middle part of the two U-shaped ribs to form four arc-shaped branches extending from the beam portion, and each arc-shaped branch extends along the outer wall of the stick toward the inside of the stick; Each arc-shaped branch comprises an inner end face, the inner end faces of the four arc-shaped branches are distributed in adjacent and equidistant squares, and the four inner end faces form a butt joint face; a separable concave-convex fitting plug-in structure is provided between the butt joint face of the first connector and the butt joint face of the second connector; The plug-in structure comprises a protrusion on at least one inner end surface of the first connecting member and a concave hole on at least one inner end surface of the second connecting member, wherein the protrusion is plug-fitted with the concave hole by interference fit; When the two sticks are in a cross shape and / or parallel, the butt joint end surface of the first connecting member and the butt joint end surface of the second connecting member can be butt jointed with each other through the connecting structure.

8. The detachable cross-shaped stick according to claim 7, characterized in that: The first connecting member and the second connecting member have the same structure; One of the inner end surfaces of the connecting piece is a convex portion, and the other three inner end surfaces are concave holes; When the first stick and the second stick form a cross, the raised portion on the first connecting member and the raised portion on the second connecting member are located at diagonal positions; When the first stick and the second stick are parallel, the protrusion on the first connecting member and the protrusion on the second connecting member are located at adjacent positions; The four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

9. The detachable cross-shaped stick according to claim 7, characterized in that: The four inner end surfaces are all in the same plane; and the plane is substantially flush with the inner side of the stick.

10. The detachable cross-shaped stick according to claim 7, characterized in that: The protrusion is spherical or dovetail-shaped, and the concave hole is a corresponding spherical hole and dovetail hole.

11. A detachable cross-shaped stick, characterized in that: It consists of two sticks placed close to each other; A connector for maintaining the two sticks in a cross-shaped or parallel arrangement; the connector comprises two corresponding connecting pieces, each of which comprises: a beam portion which is attached to the outside of each stick and extends along the length of the stick; Two U-shaped ribs are respectively located at two ends of the beam and are parallel to each other; The arc-shaped branches of the U-shaped ribs extend from the outside to the inside along the outer wall of the stick, and the end of each arc-shaped branch forms an inner end face, and the four inner end faces are evenly distributed on a plane to form a symmetrical arrangement of a quadrilateral, and these inner end faces jointly define a pair of butt end faces; The butt joint end face of the first connecting member cooperates with the butt joint end face of the second connecting member through a detachable connecting structure; when the two sticks are configured in a cross shape or arranged in parallel, the butt joint end face of the first connecting member can be separated and joined with the butt joint end face of the second connecting member through the connecting structure.

12. The detachable cross-shaped stick according to claim 11, characterized in that: The connection structure is a plug-in structure with concave and convex fit; the plug-in structure specifically includes: a protrusion formed on at least one inner end surface of the first connecting member; a recessed hole formed on at least one inner end surface of the second connecting member; The protrusion and the concave hole are fitted by interference, so as to achieve stable engagement between the first and second connecting members when locked, and separability of the first and second connecting members when unlocked; The protrusion is spherical or dovetail-shaped, and the concave hole is a corresponding spherical hole and dovetail hole.

Images