Corner positioning structure with external multi-axis spring

Abstract

The utility model discloses a corner positioning structure with an external multi-shaft spring, which comprises a fixing piece, an axis piece is connected onto the fixing piece, the axis piece can linearly slide on the fixing piece along the axial direction, the axis piece comprises at least one shaft rod and a support rod, and the shaft rod and the support rod are arranged in parallel and are fixedly connected with each other; a rotating piece is connected to the axis piece and connected to the shaft rod in a sleeving mode, and a clamping structure is arranged between the rotating piece and the shaft rod. After the axis piece moves in the axial direction, the rotating piece can be connected with the shaft rod in a clamped mode through the clamping structure so as to limit rotation of the rotating piece, and after the clamping relation is relieved, the rotating piece can rotate relative to the shaft rod. The supporting rod is sleeved with a spring, and the spring drives the shaft center piece to slide after the rotating angle of the rotating piece is adjusted so that the shaft rod can be clamped with the rotating piece. The supporting stability of the supporting structure can be improved, the position control of supporting points is simplified, and the scattering phenomenon during lifting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of corner structures, in particular to a corner positioning structure with external multi-axis springs. Background Art

[0002] Corner support structures usually have one or more fulcrums that allow the bracket to rotate within a specific angle range. They are often used in the field of bracket design to provide support and stability. Corner support structures are common in the design of folding tables and chairs, allowing the tables and chairs to be unfolded and used when needed, and can be easily folded and save space when not needed. Folding stools, countertops, clothes drying racks and other household items often use corner support structures to flexibly switch between different states; some doors and windows use corner support structures, allowing them to be opened at specific angles, providing more flexible ventilation and use experience; outdoor leisure furniture such as folding chairs and lounge chairs can also use corner support structures, making them easier to store and carry in outdoor spaces; some electronic equipment supports, such as tablet stands and mobile phone stands, can also use corner support structures to provide different viewing angles and height adjustments; at the same time, luggage may use corner support structures so that the luggage can stand stably without additional support. These examples highlight the practicality of corner support structures in daily life and bring many conveniences to our lives. This structure not only makes household items easier to use and store, but also provides more options for outdoor activities, leisure and work.

[0003] In daily life, the demand for support structures is increasing, especially in furniture design, folding equipment, and various products with adjustable support angles. However, existing structures have some problems when lifting or folding these structures, such as unstable support structures, difficult to control the position of support points, or easy to scatter when lifted. In view of this, this application is specially proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-axis spring external corner positioning structure, which sets the shaft rod to move axially and realizes the locking position through the engagement of locking teeth, and sets two shaft rods to separately externalize the elastic component to solve the problems in the prior art of instability of the supporting structure, difficulty in controlling the position of the supporting point, or easy scattering when lifting.

[0005] The utility model is implemented by the following technical solutions:

[0006] The utility model provides a multi-axis spring external corner positioning structure, comprising:

[0007] A fixing member, the fixing member is connected to an axial member, the axial member can slide linearly on the fixing member along the axial direction, the axial member includes at least one shaft and a support rod, the shaft and the support rod are arranged in parallel and form a fixed connection;

[0008] The shaft core is connected with a rotating member, the rotating member is sleeved on the shaft, and a clamping structure is provided between the rotating member and the shaft;

[0009] After the shaft core moves in the axial direction, the rotating member can be engaged with the shaft rod through the engaging structure to limit the rotation of the rotating member, and after the engaging relationship is released, the rotating member can rotate relative to the shaft rod;

[0010] A spring is sleeved on the support rod, and the spring drives the shaft member to slide after the rotation angle of the rotating member is adjusted, so that the shaft rod is engaged with the rotating member.

[0011] In some embodiments, the locking structure includes a first locking portion disposed on the shaft and a second locking portion disposed on the rotating member. After the shaft member moves axially, the first locking portion can cooperate with the second locking portion to form a locking connection to limit the rotation of the rotating member.

[0012] In some embodiments, the first engaging portion is constructed as a plurality of first teeth uniformly arranged on the outer wall of the shaft along the circumferential direction, and the second engaging portion is constructed as a plurality of second teeth uniformly arranged on the inner wall of the rotating member along the circumferential direction, and the plurality of first teeth can cooperate with the plurality of second teeth to form a locking connection relationship.

[0013] In some embodiments, the rotating member includes a plurality of rotating rods sleeved on the shaft, wherein the engaging structure is disposed between at least one of the rotating rods and the shaft.

[0014] In some embodiments, the fixing member includes a first fixing block and a second fixing block arranged at intervals, and also includes a plurality of connecting blocks arranged between the first fixing block and the second fixing block, and the axial member is slidably arranged on the first fixing block, the second fixing block, and the plurality of connecting blocks.

[0015] In some embodiments, the shaft member includes two shafts and a support rod, the two shafts are respectively arranged in parallel on both sides of the support rod and fixedly connected, and the two shafts are respectively connected to the rotating member.

[0016] In some embodiments, the spring is disposed in the fixing member, and after an external force causes the shaft member to move axially, the spring can produce elastic deformation, and after the external force disappears, the spring drives the shaft member to move in the opposite direction, so that the shaft rod engages with the rotating member.

[0017] In some embodiments, the ends of the shaft rod and the support rod are provided with limiting push heads, and the limiting push heads connect the shaft rod and the support rod into an integral structure.

[0018] In some embodiments, a rotation support section is provided on the shaft rod at one end close to the limit push head, and the rotation support section is used to synchronously extend into the rotating member to support the rotating member to achieve smooth rotation when the engagement relationship between the rotating member and the shaft rod is released.

[0019] In some embodiments, a limit pull ring is provided at the end of the shaft rod and / or the support rod.

[0020] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:

[0021] The central axis of the utility model includes a shaft rod and a support rod that are parallel and fixedly connected. Only by applying force to one of the rods, the shaft rod and the support rod can move axially synchronously. At the same time, the clamping structure and the spring are respectively arranged on the shaft rod and the support rod, which are independent of each other and do not affect each other. The size or deformation degree of the spring is not limited by the clamping structure and its position, the spring has a larger telescopic range, and the range of controllable elastic adjustment is larger.

[0022] By setting a first engaging portion on the shaft and a second engaging portion on the rotating member, when the shaft member moves as a whole, the engaging and separating of the first engaging portion and the second engaging portion will be controlled. When the first engaging portion and the second engaging portion are engaged, the rotating member is limited in rotation and can no longer rotate around the shaft. At this time, a stable support limit is formed for the rotating member, which avoids the scattering phenomenon when the rotating member is lifted. When it is necessary to adjust the support angle or support gear position of the rotating member, it is only necessary to move the shaft member by external force to separate the first engaging portion from the second engaging portion. At this time, the rotating member can rotate around the shaft, thereby adjusting the support angle or gear position of the rotating member. When the required angle is adjusted, the external force is canceled and the shaft member is driven to move in the opposite direction by the spring reset, so that the first engaging portion and the second engaging portion are re-engaged, and the entire gear shifting or angle adjustment process can be completed to achieve a new rotation angle positioning.

[0023] The corner positioning structure formed by similar corner positioning structures can provide stable connection and support effects, can be infinitely stacked like a chain, and can perform 360° free corner positioning, so it is natural to construct various practical forms or artistic styles.

[0024] In general, the corner positioning structure in the utility model is achieved by arranging a shaft rod and a support rod in parallel, a locking structure is arranged between the shaft rod and the rotating part, a spring is arranged on the support rod, and the rotation limit of the rotating part is achieved through axial movement of the shaft core part and utilizing the locking structure, so as to achieve the purpose of improving the supporting stability of the rotating part, simplifying the control of the support point position, and avoiding scattering when lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the first corner positioning structure provided in the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram after hiding the fixings;

[0028] Figure 3 for Figure 1 Schematic diagram after hiding the fixed parts and rotating parts;

[0029] Figure 4 for Figure 1 A magnified schematic diagram of the local details of the rotating parts;

[0030] Figure 5 for Figure 1 The cross-sectional diagram after the shaft parts are hidden;

[0031] Figure 6 This is a schematic diagram of the second corner positioning structure provided in the utility model;

[0032] Figure 7 for Figure 6 Schematic diagram after hiding the fixings;

[0033] Figure 8 for Figure 6 Schematic diagram after hiding the fixed parts and rotating parts;

[0034] Fig. 9 for Figure 6 A magnified schematic diagram of the local details of the rotating parts;

[0035] Fig.10 for Figure 6 The cross-sectional diagram after the shaft parts are hidden;

[0036] Fig.11 This is a schematic diagram of the third corner positioning structure provided in the utility model;

[0037] Fig.12 for Fig.11 Schematic diagram after hiding the fixings;

[0038] Fig.13 for Fig.11 The cross-sectional diagram after the shaft parts are hidden;

[0039] Fig.14 for Fig.11 Schematic diagram of the middle rotating part after unfolding;

[0040] Fig.15 for Fig.11 Another schematic diagram of the middle rotating part after unfolding;

[0041] Fig.16 This is a simplified version of the corner positioning structure principle explanation diagram in the utility model.

[0042] Marks and corresponding parts names in the attached drawings:

[0043] 1-bottom plate, 2-fixing part, 21-first fixing block, 22-second fixing block, 23-first connecting block, 24-second connecting block, 25-third connecting block, 3-axial part, 31-axial rod, 32-first clamping part, 33-rotation support section, 34-limiting push head, 35-support rod, 4-rotating part, 41-first rotating rod, 411-second clamping part, 412-rotation support hole, 42-second rotating rod, 421-sleeve hole, 5-spring, 6-limiting pull ring. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Please refer to Figures 1 to 10 , a multi-axis spring external rotation angle positioning structure provided in the embodiment of the present application comprises a fixing member 2 mounted on a base plate 1, the fixing member 2 is connected to an axis member 3, the axis member 3 can slide linearly on the fixing member 2 along the axial direction, the axis member 3 comprises at least one shaft 31 and a support rod 35, the shaft 31 is arranged in parallel with the support rod 35 and forms a fixed connection; a rotating member 4 is connected to the shaft member 3, the rotating member 4 is sleeved on the shaft 31, and a clamping structure is provided between the rotating member 4 and the shaft 31; after the shaft member 3 moves along the axial direction, the rotating member 4 can form a clamping connection with the shaft 31 through the clamping structure to limit the rotation of the rotating member 4, and after the clamping relationship is released, the rotating member 4 can rotate relative to the shaft 31; a spring 5 is sleeved on the support rod 35, and the spring 5 drives the shaft member 3 to slide after the rotation angle of the rotating member 4 is adjusted, so that the shaft 31 is clamped with the rotating member 4.

[0049] It should be noted that the bottom plate 1 here can be a support surface, a folding stool, a table, etc., which is not limited here. For the sake of easy understanding, the embodiment of the utility model uses a bracket as an example for explanation. The fixing member 2 is used to support the shaft member 3 to position the entire corner positioning structure to ensure the stability of the corner positioning structure. The fixing member 2 can be connected to the bottom plate 1 by bolts, welding, clamping mechanism, or other methods. The shaft member 3 can slide along the axis on the fixing member 2, and this effect can be achieved by passing the shaft member 3 through the fixing member 2. In order to improve the torsional resistance of the shaft member 3, a prismatic segment can be provided on the shaft member 3, and a matching prismatic hole can be provided on the fixing member 2. When the shaft member 3 moves axially, the prismatic segment can slide in the prismatic hole. Combined with the rotational limiting relationship between the limiting push head 34 between the shaft rod 31 and the support rod 35 and the fixing member 2, the position for limiting the rotation of the shaft member 3 will increase, and the torsional deformation resistance of the shaft member 3 will be enhanced accordingly. The advantage of such improvement is that the upper limit value of the supporting bearing capacity of the rotating member 4 can be increased without changing the material properties used for various components.

[0050] The rotating member 4 is connected to the shaft member 3, and the rotating member 4 can rotate around the shaft rod 31. A snap connection is set between the rotating member 4 and the shaft rod 31 to limit the rotation of the rotating member 4 and the support angle after each rotation adjustment. This allows the entire corner positioning structure to adjust the rotation direction and the desired support angle when needed, thereby providing a stable support effect to solve the problems of unstable support, difficult to control the position of the support point, or easy scattering when lifting in the prior art.

[0051] It should be noted that, in this embodiment, by adopting an axis rod and a support rod, the spring and the locking structure are respectively arranged on two different rods, which are independent of each other and do not affect each other, so that the size or deformation degree of the spring is not limited by the locking structure and its position. This embodiment can provide a larger telescopic range for the spring and a larger range of controllable elastic adjustment, which will result in a larger optional adjustment range for the overall size of the entire corner positioning structure. This advantage is more practical when designing small or micro items with corner positioning functions.

[0052] It should be noted that the axial movement of the shaft member 3 can be achieved by external force, for example, the operator can push or pull the shaft member 3 to achieve the axial movement of the shaft member 3. At the same time, manual operation can also be changed to mechanical power, and the opening and closing of the corner positioning structure can be remotely controlled by using electronic equipment to control the mechanical power. After a little improvement, it can be applied to various intelligent remote control fields such as doors, car doors, valves, etc. commonly used today.

[0053] According to some embodiments of the present application, the engaging structure includes a first engaging portion 32 disposed on the shaft 31 and a second engaging portion 411 disposed on the rotating member 4. After the shaft member 3 moves axially, the first engaging portion 32 can cooperate with the second engaging portion 411 to form an engaging connection to limit the rotation of the rotating member 4. Here, the axial movement of the shaft member 3 refers to the first engaging portion 32 approaching the second engaging portion 411 so that the first engaging portion 32 and the second engaging portion 411 can engage with each other, so that the rotating member 4 cannot rotate, thereby achieving stable support for the rotating member 4.

[0054] A first engaging portion 32 is provided on the shaft 31, and a second engaging portion 411 is provided on the rotating member 4. When the shaft member 3 moves as a whole, the engaging and separating of the first engaging portion 32 and the second engaging portion 411 are controlled. When the first engaging portion 32 engages with the second engaging portion 411, the rotating member 4 is limited in rotation and cannot rotate around the shaft 31. At this time, a stable support limit is formed for the rotating member 4. When it is necessary to adjust the support angle or support gear of the rotating member 4, it is only necessary to move the shaft member 3 by external force so that the first engaging portion 32 is separated from the second engaging portion 411. At this time, the rotating member 4 can rotate around the shaft 31, so that the support angle or gear of the rotating member 4 can be adjusted. When the required angle is adjusted, the shaft member 3 is driven to move in the opposite direction by the reset of the spring 5 after the external force is removed, so that the first engaging portion 32 and the second engaging portion 411 are reengaged, and the entire gear shifting or angle adjustment process can be completed to achieve a new rotation angle positioning.

[0055] According to some embodiments of the present application, the first engaging portion 32 is constructed as a plurality of first teeth uniformly arranged on the outer wall of the shaft 31 along the circumferential direction, and the second engaging portion 411 is constructed as a plurality of second teeth uniformly arranged on the inner wall of the rotating member 4 along the circumferential direction, and the plurality of first teeth can cooperate with the plurality of second teeth to form an engaging connection relationship. When an external force acts on the shaft 31 to make it move axially, the first teeth on the shaft 31 and the second teeth on the rotating member 4 are separated from each other, at which time the rotation limit of the rotating member 4 is released, and the rotating member 4 can rotate around the axis of the shaft 31, thereby adjusting the angle of the rotating member 4. When the external force disappears, under the driving action of the spring 6, the shaft 31 moves in the opposite direction, so that the first teeth on the shaft 31 and the second teeth on the rotating member 4 are engaged with each other, at which time the rotation limit of the rotating member 4 is performed, and the rotating member 4 cannot rotate, thereby achieving stable support after the angle adjustment.

[0056] According to some embodiments of the present application, the rotating member 4 includes a plurality of rotating rods sleeved on the shaft rod 31 , wherein the engaging structure is disposed between at least one of the rotating rods and the shaft rod 31 .

[0057] Specifically, Figures 1 to 5As shown in , the rotating member 4 includes two rotating rods, namely, a first rotating rod 41 and a second rotating rod 42. The first rotating rod 41 has a second engaging portion 411 and a rotation support hole 412, and the second rotating rod 42 has a sleeve hole 421, wherein the second engaging portion 411 cooperates with the first engaging portion 32 on the shaft rod 31 to limit the rotation of the first rotating rod 41, and the sleeve hole 421 is sleeved on a certain section of the shaft rod 31 to provide stable rotation support for the second rotating rod 42. The rotation support hole 412 is adapted to the outer diameter of the rotation support section 33 on the shaft member 3, and the aperture of the rotation support hole 412 is larger than that of the sleeve hole 421, because the first engaging portion 32 on the shaft member 3 wants to be able to enter the aperture of the rotating member 4, and the aperture size of the rotation support hole 412 must be able to allow the first engaging portion 32 to pass smoothly. The sleeve hole 421 has the same basic function as the rotation support hole 412, but their action time periods are different. When the rotating member 4 rotates, the rotating support hole 412 and the sleeve hole 421 play a role of slewing support. It should be noted that since the rotating member 4 includes two rotating rods, in order to keep the rotating member 4 rotating stably, a rotating support part must be provided on both rotating rods, otherwise rotation imbalance may occur easily.

[0058] like Figures 6 to 10 As shown in the figure, the rotating member 4 includes a rotating rod, which has a second engaging portion 411 and a rotation support hole 412. The rotation support hole 412 is adapted to the outer diameter of the rotation support section 33 on the shaft member 3 to provide stable rotation support for the rotating member 4. The diameter of the rotation support hole 412 must be large enough to allow the first engaging portion 32 to pass smoothly, so that the first engaging portion 32 on the shaft member 3 enters the second engaging portion 411. At this time, since the rotating member 4 has only one rotating rod, it is sufficient for the rotation support hole 412 to be long enough.

[0059] According to some embodiments of the present application, the fixing member 2 includes a first fixing block 21 and a second fixing block 22 that are spaced apart, and also includes a plurality of connecting blocks arranged between the first fixing block 21 and the second fixing block 22, and the axial member 3 is slidably arranged on the first fixing block 21, the second fixing block 22, and the plurality of connecting blocks.

[0060] Specifically, Figures 1 to 5 As shown in the figure, the connecting block includes a first connecting block 23, a second connecting block 24 and a third connecting block 25, and the connecting blocks are arranged in the same direction as the first fixing block 21 and the second fixing block 22. The shaft 31 passes through the first fixing block 21, the second fixing block 22 and the second connecting block 24, and the support rod 35 passes through the first fixing block 21, the second fixing block 22, the first connecting block 23, the second connecting block 24 and the third connecting block 25.

[0061] like Figures 6 to 10 As shown in , the connecting block includes a first connecting block 23, which is arranged in the same direction as the first fixing block 21 and the second fixing block 22. The shaft 31 passes through the first fixing block 21 and the second fixing block 22, and the support rod 35 passes through the first fixing block 21, the second fixing block 22 and the first connecting block 23.

[0062] According to some embodiments of the present application, the spring 5 is disposed on the support rod 35 in the fixing member 2, and after the external force causes the shaft member 3 to move axially, the spring 5 can produce elastic deformation, and after the external force disappears, the spring 5 drives the shaft member 3 to move in the opposite direction, so that the shaft rod 31 is engaged with the rotating member 4. The main function of the support rod 35 is to guide the movement of the spring 5, so as to prevent the spring 5 from getting stuck due to excessive deformation when it is compressed in the fixing member 2.

[0063] According to some embodiments of the present application, the ends of the shaft rod 31 and the support rod 35 are provided with a limiting push head 34, and the limiting push head 34 connects the shaft rod 31 and the support rod 35 into an integral structure. By providing the limiting push head 34, on the one hand, the shaft rod 31 and the support rod 35 are connected into an integral structure, and on the other hand, it is convenient to apply an external force to the shaft member 3 through the limiting push head 34, so as to push the shaft member 3 to move axially so that the engaging part of the shaft rod 31 and the rotating member 4 are separated, and at the same time, the limiting push head 34 can play an axial limiting role on the shaft member 3 after contacting the end face of the first fixed block 21.

[0064] According to some embodiments of the present application, a rotation support section 33 is provided on the shaft rod 31 at one end close to the limit push head 34, and the rotation support section 33 is used to synchronously extend into the rotating member 4 when the engagement relationship between the rotating member 4 and the shaft rod 31 is released to support the rotating member 4 to achieve smooth rotation. By providing the rotation support section 33, when an external force acts on the limit push head 34, in the process of pushing the shaft member 3 to move axially, the rotation support section 33 will synchronously extend into the rotation support hole on the rotating member 4 to achieve rotational support for the rotating member 4, prevent shaking when rotating the rotating member 4, and improve the stability of the rotating member 4 during the angle adjustment process.

[0065] According to some embodiments of the present application, a limit pull ring 6 is provided at the end of the shaft rod 31 and / or the support rod 35. By providing the limit pull ring 6, when the spring 5 resets and drives the shaft member 3 to move, the limit pull ring 6 can play an axial limiting role on the shaft member 3. Since the shaft rod 31 and the support rod 35 are fixedly connected together, the limit pull ring 6 can be provided only at the end of the shaft rod 31 or the support rod 35, and of course, the limit pull ring 6 can also be provided at the ends of the shaft rod 31 and the support rod 35 at the same time. It should be noted that the limit pull ring 6 can also be used as a force application point, that is, the shaft member 3 is pulled to move by the limit pull ring 6.

[0066] Please refer to Figures 11 to 15 According to some embodiments of the present application, the axis member 3 includes two shafts 31 and a support rod 35, the two shafts 31 are respectively arranged in parallel on both sides of the support rod 35 and are fixedly connected, and the two shafts 31 are respectively connected to the rotating members 4. The corner positioning combination structure in this scheme can achieve 360° free corner positioning, and there is a larger angle adjustment range between the two rotating members 4, so it will be more convenient to store the connected components. Furthermore, other similar corner positioning structures can be set on the edges of the two rotating members 4, which can be infinitely superimposed like a chain. This type of interlocking corner positioning structure can provide a stable connection effect and a support effect at the same time, so it is natural to construct various practical forms or artistic styles on its basis.

[0067] Further, Figures 1 to 15 The three design schemes shown in the figure are actually designed based on the principle of corner positioning structure. In brief, the principle of corner positioning structure includes five basic design elements and two different existence states. The five basic design elements are fixed parts, shaft parts, rotating parts, adjustment control system, and power system. The two existence states are the corner locking state and the corner releasing state. Among them, the main function of the fixed parts is to attach the entire corner positioning structure to a specific practical object, such as Figures 1 to 10 In the embodiment, the entire corner positioning structure is positioned on the base plate 1; the main function of the axis member is to provide a rotation axis for the rotation of the rotating member; the main function of the rotating member is to rotate around the axis member and provide the required support angle for daily use. It can be a square frame on the same plane, or a roller around the axis member, or any other form connected to the axis member, such as the common rear wheel of a bicycle. It should be noted that there is actually no essential difference between the fixed member and the rotating member, which is different only because of the difference in the object to which they are attached or the difference in functional attributes; the main function of the adjustment control system is to limit the rotation or sliding of the fixed member, the axis member, and the rotating member, and to provide related components for energy storage and release for each rotation adjustment; the main function of the power system is to provide the power required during the angle adjustment process.

[0068] The limit relationship in the regulating control system usually includes four different combinations, namely, round limit, two-way rotation limit, one-way rotation limit, and damping limit. Figures 1 to 15The implementation examples shown in the figure use two types of limit methods: round limit and bidirectional angle limit. Among the angle division components in the adjustment control system, there are 8 different possible forms that are commonly used, namely, internal gear form, external gear form, inner hole wheel form, outer hole wheel form, side surface limit concave and convex form, side surface damping concave and convex form, strip clamping tooth form, and strip clamping hole form. Figures 1 to 15 The implementation examples shown in the figure mainly use two types of angle division components, namely, the internal gear form and the external gear form. The shaft core usually has four basic forms, namely, a symmetrical form with its own axis as the axis of symmetry, an asymmetrical form with its own axis as the axis of symmetry, a coaxial multi-segment form, or a coaxial internal and external multi-axis sleeve form. Figures 1 to 15 The axis members used in the embodiments shown in the figure are all asymmetrical in shape with their axis lines as the axis of symmetry.

[0069] In any rotation angle limiting structural system, there is at least one pair of rotation relationship and one pair of rotation angle limiting relationship between the fixed part and the rotating part. The shaft member between the fixed part and the rotating part can exist alone, or it can be fixedly connected to the fixed part or fixedly connected to the rotating part. When the shaft member exists alone, there are actually two ways for the shaft member to operate. One is to rotate with its own axis as the axis, and the other is to slide along its own axis. The regulating control system for the rotation angle limiting can exist directly between the fixed part and the rotating part, or it can exist indirectly between the fixed part and the rotating part through the conduction of the shaft member. Therefore, at least five major categories of different combinations of rotation angle positioning structural systems can be divided: 1. The shaft member only rotates but does not slide, and exists independently; 2. The shaft member only rotates but does not slide, and exists in combination with the fixed part or the rotating part; 3. The shaft member only slides but does not rotate, and exists independently; 4. The shaft member only slides but does not rotate, and exists in combination with the fixed part or the rotating part; 5. The shaft member can rotate and slide, and exists independently. Figures 1 to 15 The three implementation cases shown in the figure are all asymmetric forms in which the axis member of the third type of corner positioning structural system takes its axis as the axis of symmetry. Of course, if the four limiting relationships, eight common angle division components, four axis member forms, and the various different styles contained in each type are combined, N different forms of corner limiting structural systems can be combined.

[0070] by Fig.16 For example, Figures 1 to 15 The operating principle of the three corner positioning structures shown in the figure is briefly explained in diagram form. Assume that the surface where the fixing part is located is S woz , the surface where the rotating part is located is S xoz The rotating surface where the axis part is located is S yoz , the sliding axis where the axis part is located is L ozThe "corner" and "positioning" in the corner positioning structure determine S woz With S xoz There must be at least one pair of rotational relationships and their matching limiting relationships between them. When the rotational limiting relationship is formed through the transmission of the shaft member, it will be divided into two pairs of rotational relationships and their matching limiting relationships, as shown in the following example. Fig.16 As shown in , the two pairs of rotational relationships are rotational relationship 2 between the fixed member and the shaft member, and rotational relationship 3 between the rotating member and the shaft member. Figures 1 to 15 In the three corner positioning structures shown in FIG, the shaft member is slidable but not rotatable and exists independently, so there is a sliding relationship 1 and a matching limiting relationship between the shaft member and the fixed member or the rotating member. oz When sliding back and forth, the entire corner positioning structure can be in two different states: locked or separated. By combining these three relationships and their matching limit relationships reasonably, a variety of similar Figures 1 to 15 The simple and practical corner positioning structure shown in .

[0071] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model.

Claims

1. A multi-axis spring external angle positioning structure, It is characterized in that The invention comprises a fixing member (2), the fixing member (2) being connected to an axial member (3), the axial member (3) being able to slide linearly on the fixing member (2) along the axial direction, the axial member (3) comprising at least one shaft rod (31) and a support rod (35), the shaft rod (31) and the support rod (35) being arranged in parallel and forming a fixed connection; The shaft core member (3) is connected to a rotating member (4), the rotating member (4) is sleeved on the shaft rod (31), and a clamping structure is provided between the rotating member (4) and the shaft rod (31); After the shaft core (3) moves in the axial direction, the rotating member (4) can form a snap connection with the shaft rod (31) through the snap structure to limit the rotation of the rotating member (4), and after the snap relationship is released, the rotating member (4) can rotate relative to the shaft rod (31); The support rod (35) is sleeved with a spring (5), and the spring (5) drives the shaft member (3) to slide after the rotation angle of the rotating member (4) is adjusted, so that the shaft rod (31) is engaged with the rotating member (4).

2. The multi-axis spring external rotation angle positioning structure according to claim 1, It is characterized in that The snap-fit ​​structure comprises a first snap-fit ​​portion (32) arranged on the shaft (31) and a second snap-fit ​​portion (411) arranged on the rotating member (4); after the shaft member (3) moves axially, the first snap-fit ​​portion (32) can cooperate with the second snap-fit ​​portion (411) to form a snap-fit ​​connection, so as to limit the rotation of the rotating member (4).

3. The multi-axis spring external rotation angle positioning structure according to claim 2, It is characterized in that The first engaging portion (32) is constructed as a plurality of first teeth uniformly arranged on the outer wall of the shaft (31) along the circumferential direction, and the second engaging portion (411) is constructed as a plurality of second teeth uniformly arranged on the inner wall of the rotating member (4) along the circumferential direction, and the plurality of first teeth can cooperate with the plurality of second teeth to form a locking connection relationship.

4. The multi-axis spring external rotation angle positioning structure according to any one of claims 1 to 3, It is characterized in that The rotating member (4) comprises a plurality of rotating rods sleeved on the shaft rod (31), wherein the engaging structure is arranged between at least one of the rotating rods and the shaft rod (31).

5. The multi-axis spring external angle positioning structure according to any one of claims 1 to 3, It is characterized in that The fixing member (2) comprises a first fixing block (21) and a second fixing block (22) which are arranged at intervals, and also comprises a plurality of connecting blocks arranged between the first fixing block (21) and the second fixing block (22); the shaft member (3) is slidably arranged on the first fixing block (21), the second fixing block (22), and the plurality of connecting blocks.

6. The multi-axis spring external angle positioning structure according to any one of claims 1 to 3, It is characterized in that The shaft member (3) comprises two shaft rods (31) and a support rod (35); the two shaft rods (31) are respectively arranged in parallel on both sides of the support rod (35) and are fixedly connected; and the two shaft rods (31) are respectively connected to the rotating member (4).

7. The multi-axis spring external angle positioning structure according to any one of claims 1 to 3, It is characterized in that The spring (5) is arranged in the fixing member (2). When an external force causes the shaft member (3) to move axially, the spring (5) can produce elastic deformation. When the external force disappears, the spring (5) drives the shaft member (3) to move in the opposite direction, so that the shaft rod (31) is engaged with the rotating member (4).

8. The multi-axis spring external rotation angle positioning structure according to any one of claims 1 to 3, It is characterized in that A limiting push head (34) is provided at the end of the shaft rod (31) and the support rod (35), and the limiting push head (34) connects the shaft rod (31) and the support rod (35) into an integral structure.

9. The multi-axis spring external rotation angle positioning structure according to claim 8, It is characterized in that A rotation support section (33) is provided on the shaft (31) at one end close to the limit push head (34), and the rotation support section (33) is used to synchronously extend into the rotating member (4) to support the rotating member (4) to achieve smooth rotation when the engagement relationship between the rotating member (4) and the shaft (31) is released.

10. The multi-axis spring external rotation angle positioning structure according to any one of claims 1 to 3, It is characterized in that A limiting pull ring (6) is provided at the end of the shaft rod (31) and / or the support rod (35).

Images