Corner positioning structure based on elastic strip and gear

Abstract

The utility model discloses a corner positioning structure based on an elastic strip and a gear, which comprises an adjusting fluted disc and a fixing piece which are arranged on a bottom plate, the fixing piece is connected with an axis piece, the axis piece is connected with a rotating piece, and the rotating piece can rotate relative to the fixing piece; a plurality of convex teeth are arranged on the adjusting fluted disc, the convex teeth are arranged in an arc line shape with the rotating center of the rotating part as the circle center, and a groove is formed between every two adjacent convex teeth; an elastic strip is arranged on the rotating piece, the elastic strip can be clamped into the corresponding groove after the rotating angle of the rotating piece is adjusted, and the pressure value of the groove to the elastic strip is F and Fgt; 0. According to the corner positioning structure, the elastic strip and the adjusting fluted disc are arranged and matched with each other, so that the purposes of improving the stability of the corner structure and reducing the control difficulty of a supporting angle can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of corner structures, in particular to a corner positioning structure based on elastic bars and gears. 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 to make them easier to store and carry in outdoor spaces; some electronic equipment supports, such as tablet stands and mobile phone stands, often use corner support structures to provide different viewing angles and height adjustments; at the same time, luggage can use corner support structures so that the luggage can stand stably without additional support. These examples highlight the practical application of corner support structures in daily life, bringing convenience and flexibility 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 supporting structures is increasing, especially in furniture design, foldable and adjustable rotation angle products. However, existing structures have some problems when lifting or folding these structures, such as instability, difficulty in controlling the position of the supporting points, or scattering when lifting. In view of this, this application is specially proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a corner positioning structure based on spring bars and gears, which solves the problems of poor stability of the corner structure, difficult control of the supporting angle and easy scattering when lifting in the prior art by setting spring bars and adjusting toothed discs and making them cooperate with each other.

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

[0006] An embodiment of the utility model provides an angle positioning structure based on elastic bars and gears, comprising an adjusting toothed disc and a fixing member installed on a base plate, the fixing member being connected to an axial member, the axial member being connected to a rotating member, and the rotating member being rotatable relative to the fixed member; a plurality of convex teeth are arranged on the adjusting toothed disc, the plurality of convex teeth are arranged in the shape of an arc with the rotation center of the rotating member as the center, and a groove is formed between two adjacent convex teeth; an elastic bar is arranged on the rotating member, the elastic bar can be inserted into the corresponding groove after the angle of the rotating member is adjusted, and the pressure value of the groove on the elastic bar is F, and F>0.

[0007] In some embodiments, the rotating member includes a first rotating rod and a second rotating rod; the first rotating rod is installed at one end of the shaft member, and the second rotating rod is installed at the other end of the shaft member.

[0008] In some embodiments, a first notch is disposed on the first rotating rod, a second notch is disposed on the second rotating rod, and two ends of the elastic bar are movably connected to the first notch and the second notch, respectively.

[0009] In some embodiments, when the two ends of the elastic bar are respectively in the first slot and the second slot, the elastic bar is inserted into the corresponding groove and generates an extrusion force therewith; when one end of the elastic bar is in the second slot and the other end is separated from the first slot, the elastic bar is separated from the groove.

[0010] In some embodiments, the fixing member includes a first fixing block and a second fixing block, one end of the shaft member passes through the first fixing block, and the other end passes through the second fixing block.

[0011] In some embodiments, the adjusting gear disk is located between the first fixing block and the second fixing block, and can be translated along the axis toward the first fixing block or the second fixing block as needed.

[0012] In some embodiments, the shaft member passes through the adjusting toothed disc, and the connection between the shaft member and the adjusting toothed disc is located at the center of the disc arc of the adjusting toothed disc.

[0013] In some embodiments, the cross-section of the adjusting toothed disc is semicircular or circular.

[0014] In some embodiments, the plurality of protruding teeth on the adjusting toothed disc form an outward-facing toothed disc structure or an inward-facing toothed disc structure.

[0015] In some embodiments, a handle is provided at one end of the elastic bar, and the handle is used to drive the elastic bar to engage in or disengage from the groove during the angle adjustment of the rotating member.

[0016] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:

[0017] 1. The corner positioning structure of the utility model forms a movable support for the bottom plate by placing the rotating part on the bottom plate, and controls the support angle of the rotating part to the bottom plate by setting a rotatable structure between the rotating part and the shaft member, and / or between the shaft member and the fixed member. Spring bars are set on the left and right rotating rods, and the spring bars can be driven during the rotation of the rotating part. Adjusting toothed discs are set on the bottom plate to cooperate with the spring bars to achieve the purpose of stable support and engagement and shifting. Each groove corresponds to a gear position, and the spring bars can be stably engaged in the groove without the phenomenon of scattering that is easy to occur when lifting.

[0018] 2. By setting the axis member at the center position of the arc disk of the adjusting toothed disk, the stability of the rotating member during rotation can be improved; by setting the adjusting toothed disk at the middle position between the first fixed block and the second fixed block, the structural balance of the entire angle positioning structure can be improved, and the force stability between the components can be improved; by setting the first notch and the second notch on the first rotating rod and the second rotating rod, the elastic bar can be limited to improve the stability during engagement and gear adjustment.

[0019] In general, the corner positioning structure in the present invention can achieve the purpose of improving the stability of the corner structure and reducing the difficulty of supporting angle control by arranging elastic bars and adjusting toothed discs and making them cooperate with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the first corner positioning structure provided in the utility model;

[0022] Figure 2 for Figure 1 The schematic diagram of the structure after the bottom plate and some rotating parts are hidden;

[0023] Figure 3 This is a schematic diagram of the second corner positioning structure provided in the utility model;

[0024] Figure 4 This is a schematic diagram of the third corner positioning structure provided in the utility model;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of the local structure in FIG.

[0026] Figure 6 This is a schematic diagram of the fourth corner positioning structure provided in the utility model;

[0027] Figure 7 for Figure 6 A magnified schematic diagram of the local structure.

[0028] Marks and corresponding parts names in the attached drawings:

[0029] 1-axial member, 2-rotating member, 21-first rotating rod, 22-second rotating rod, 3-adjusting toothed disc, 31-convex teeth, 32-grooves, 4-elastic bars, 5-fixing member, 51-first fixing block, 52-second fixing block, 6-bottom plate, 7-first notch, 8-second notch, 9-handle. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] like Figure 1-2As shown, the embodiment of the utility model provides an angle positioning structure based on elastic bars and gears, including an adjusting toothed disc 3 and a fixing member 5 mounted on a bottom plate 6, the fixing member 5 is connected to an axle member 1, the axle member 1 is connected to a rotating member 2, and the fixing member 5 and the rotating member 2 can rotate with each other. The fixing member 5 and the axle member 1 can be movably connected or fixedly connected; the axle member 1 and the rotating member 2 can be movably connected or fixedly connected; the axle member 1 and the adjusting toothed disc 3 can also be movably connected or fixedly connected; there is at least one pair of rotational relationships between the fixing member 5 and the rotating member 2, and not all of them can be fixedly connected. The rotating member 2 includes a first rotating rod 21 and a second rotating rod 22. The first rotating rod 21 is mounted at one end of the axle member 1, and the second rotating rod 22 is mounted at the other end of the axle member 1. The outer edge of the adjusting toothed disc 3 includes a plurality of protruding teeth 31, and a groove 32 is formed between two adjacent protruding teeth 31. The second rotating rod 22 is movably connected with an elastic bar 4, which extends to the first rotating rod 21 and is movably connected with the first rotating rod 21. The elastic bar 4 is in movably contact with the adjusting toothed disc 3. The first rotating rod 21 has a first notch 7, which is an open notch. The second rotating rod 22 has a second notch 8, which is an annular notch or a double hole adjacent to each other. When the two ends of the elastic bar 4 are respectively in the first notch 7 and the second notch 8, the groove 32 has a pressure value F on the elastic bar 4, and the F value is >0 at this time. When one end of the elastic bar 4 is in the second notch 8 and the other end is separated from the first notch 7, the adjusting toothed disc 3 is separated from the elastic bar 4, and the F value is 0 at this time.

[0035] Specifically, Figure 1-2As shown, the above structure can achieve stable support and control of the bottom plate 6. The adjusting toothed disc 3, the fixing member 5, the shaft member 1, and the rotating member 2 in the structure jointly assume the support function of the entire angle positioning structure. The outer edge of the adjusting toothed disc 3 has a plurality of protruding teeth 31 and grooves 32. The design of these protruding teeth 31 and grooves 32 can provide a stable gear adjustment and positioning effect. The first rotating rod 21 and the second rotating rod 22 of the rotating member 2 are installed at both ends of the shaft member 1. The two rotating rods can rotate around the shaft member 1, and the shaft member 1 itself can also rotate around its axis. When one end of the spring bar 4 is movably connected with the second notch 8 on the second rotating rod 22 and the other end is engaged in the first notch 7 on the first rotating rod 21, the spring bar 4 is tightly engaged with the groove 32 on the adjusting toothed disc 3. At this time, the pressure value F of the adjusting toothed disc 3 on the spring bar 4 is greater than 0, and the entire angle positioning structure is in a locked state, limiting the rotation of the rotating member 2. When the spring bar 4 is movably connected to the second notch 8 on the second rotating rod 22 and separated from the first notch 7 on the first rotating rod 21, the spring bar 4 is separated from the adjusting toothed disc 3. At this time, the pressure value F of the adjusting toothed disc 3 on the spring bar 4 is 0, and the rotating member 2 can rotate at will, and the spring bar 4 can also rotate with the rotating member 2. It should be noted that the spring bar 4 has a certain elasticity and toughness, and the preferred material is iron wire, steel wire, etc. This structure ensures that the rotating member 2 can be stably supported at different rotation angles, and the rotation angle amplitude can be controlled by adjusting the contact position between the spring bar 4 and the adjusting toothed disc 3.

[0036] In general, if Figure 1-2 As shown, the corner positioning structure constructed by combining the spring bar and the external gear can effectively solve the instability of the existing structure when lifting or folding, and the problem that the support point position is difficult to control, and provides a more stable and controllable support solution. At the same time, this structure also takes into account the problem of scattering when lifting, and the contact design of the spring bar 4 to the groove 32 can effectively avoid the occurrence of this problem.

[0037] During operation, Figure 1-2As shown, taking the support frame as an example, the entire corner positioning structure is installed on the back of the base plate 6. The rotating member 2 is a square frame. The user can apply force to the rotating member 2, the base plate 6, and the handle 9 on the elastic bar 4, so that the rotating member 2 can rotate around the axis member 1 or have a tendency to rotate. The force direction can be clockwise or counterclockwise, and can be adjusted according to the required support angle. When the rotating member 2 is in contact with the base plate 6, the corner structure is in a contracted state and does not play a supporting role, which can save storage space. When support is required, the rotating member 2 can be moved away from the base plate 6 by adjusting the interval angle between the rotating member 2 and the base plate 6. For example, a handle 9 can be set at the end of the elastic bar 4, and the operator can operate the elastic bar 4 by applying force to the handle 9, which can improve the safety of the operation. Preferably, a cushion or anti-slip pattern can be set on the handle 9 to improve comfort or improve anti-slip properties. This structure can be used in furniture, stationery, or any mechanical structure field that requires a corner positioning structure.

[0038] It should be noted that if Figure 1-2 As shown, the number of protruding teeth 31 and the size of the adjusting toothed disc 3 can be set according to actual needs. Generally, the denser the protruding teeth 31, the higher the accuracy of the gear adjustment. The specific setting can be based on actual needs and is not limited here. The adjusting toothed disc 3 and the bottom plate 6 can be integrated, welded, bonded, or arranged by a disassembled threaded structure, etc., and there is no limitation here, as long as the structural stability can be guaranteed.

[0039] For example, Figure 1-2 As shown, the shaft member 1 is installed on the base plate 6 through the fixing member 5. The fixing member 5 includes a first fixing block 51 and a second fixing block 52; one end of the shaft member 1 passes through the first fixing block 51, and the other end passes through the second fixing block 52. By fixing the two ends of the shaft member 1 by two fixing blocks, the stability of the shaft member 1 can be improved. At the same time, the penetrating structure can ensure that the shaft member 1 can rotate within the two fixing blocks without damaging the base plate 6. The two fixing blocks can provide the shaft member 1 with space for stable rotational movement. Preferably, the shaft member 1 can be arranged to pass through the center position of the arc of the adjusting toothed disc 3. This can further improve the installation stability of the shaft member 1. More importantly, it can provide the function of supporting and fixing the adjusting toothed disc 3, ensuring the stability and accuracy between the adjusting toothed disc 3 and the elastic bar 4. For example, as Figure 1-2As shown, the cross section of the arc of the adjusting toothed disc 3 is semicircular, and the shaft member 1 penetrates the center of the arc of the adjusting toothed disc 3. The semicircular adjusting toothed disc 3 and the through-setting of the shaft member 1 can improve the uniformity of the relative sliding process between the shaft member 1 and the adjusting toothed disc 3, so that the rotating member 2 and the shaft member 1 make regular arc motion with the arc hole center of the adjusting toothed disc 3 as the center, ensuring the uniform engagement force of each gear. Of course, in other embodiments, the shaft member 1 may not penetrate the axis of the adjusting toothed disc 3, and even the shaft member 1 and the adjusting toothed disc 3 may be integrated, as long as the rotating member 2 can rotate around the arc hole center of the adjusting toothed disc 3 and the adjusting toothed disc 3 can be engaged with the elastic bar 4 to limit the position. Of course, in other embodiments, the adjusting toothed disc 3 may also be circular, regular polygonal, or other shapes, which are not limited here, as long as the subdivided angle value that can be used for multi-gear adjustment can be provided.

[0040] Furthermore, if Figure 1-2 As shown, the two ends of the spring bar 4 are respectively arranged on the ends of the first rotating rod 21 and the second rotating rod 22 close to the connecting shaft member 1, and the adjusting toothed disc 3 is arranged in the middle position of the first fixed block 51 and the second fixed block 52. This arrangement enables the operator to more evenly transfer the force to the entire spring bar 4 when applying force to the handle 9 at the end of the spring bar 4, so that the spring bar 4 is evenly stressed, and the spring bar 4 can be prevented from being deformed due to excessive local stress, thereby affecting normal use. The second notch 8 here can be an annular notch, a close-fitting double-hole slot, or a single-hole groove of a suitable size, etc., and the specific form is not limited. The connection between the spring bar 4 and the second notch 8 can be annular closed welding, nut bolting, or other detachable connection, etc., as long as one end of the spring bar can be fixed and it does not affect the small range rotation of the spring bar 4 with the connection between the spring bar 4 and the second notch 8 as the center of the circle, and no specific limitation is made here. In order to improve the adjustment convenience of the corner structure of the embodiment of the utility model, preferably, the first notch 7 at the connection between the spring bar 4 and the first rotating rod 21 is set as an open type snap-fitting notch. This structure can freely adjust the position of the spring bar 4 in the first notch 7 through the handle 9, realize the free opening and closing adjustment of the entire corner positioning structure, and ensure the stability and accuracy of the spring bar 4 when overlapping the groove 32 on the adjustment toothed disc 3. It should be noted that the shape and size of the notch need to match the spring bar 4 to ensure that the spring bar 4 can be freely moved and limited when it is located in the notch.

[0041] Furthermore, if Figure 1-2As shown, the size and position of the adjusting toothed disc 3 can be adjusted. When the size of the adjusting toothed disc 3 increases, or the position of the adjusting toothed disc 3 is translated toward the second fixed block 52, according to the geometric principle, the overlapping part of the spring bar 4 and the first rotating rod 21 will be translated in the direction away from the axis member 1. When the size of the adjusting toothed disc 3 is reduced, or the position of the adjusting toothed disc 3 is translated toward the first fixed block 51, the situation is just the opposite. When the entire corner positioning structure is in a closed and locked state, the bending amplitude of the spring bar 4 is determined by the position difference distance value between the straight line connecting the first notch 7 and the second notch 8 and the outer edge position of the groove 32. When the morphological properties of other components remain unchanged, the larger the position difference distance value, the greater the pressure value F of the adjusting toothed disc 3 on the spring bar 4, and the tighter the spring pressure lock; the smaller the position difference distance value, the smaller the pressure value F of the adjusting toothed disc 3 on the spring bar 4, and the looser the spring pressure lock. When the position difference distance value is relatively large and the pressure value F is also relatively large, a plurality of first notches 7 can be arranged at intervals on the first rotating rod 21 to provide a multi-stage spring force adjustment function, so that the tightness of the spring force lock can be freely adjusted.

[0042] Furthermore, if Figure 1-2 As shown in FIG. 1 , when the adjusting toothed disc 3 is an outward-facing toothed disc, the direction in which the adjusting toothed disc 3 presses the spring bar 4 is in the opposite direction of the shaft member 1, so the opening of the first notch 7 should be close to the shaft member 1, and the position of the slot for clamping the spring bar 4 at the first notch 7 should be away from the shaft member 1. On the contrary, Figure 3-7 As shown in , when the adjusting toothed disc 3 is an inward-facing toothed disc, the direction in which the adjusting toothed disc 3 presses the elastic bar 4 is toward the shaft member 1, so the opening of the first notch 7 should be in the direction away from the shaft member 1, and the position of the slot for clamping the elastic bar 4 at the first notch 7 should be in the direction close to the shaft member 1. At this time, viewed from the outside of the first rotating rod 21, the first notch 7 is similar to an L shape, which can clamp the elastic bar 4 and prevent it from easily detaching.

[0043] Furthermore, if Figure 3-7 As shown, the adjusting toothed disc 3 used is an inward-facing toothed disc structure. Figure 3 The shapes of the protruding teeth 31 and the grooves 32 are similar to Figure 1 Similarly, due to the greater depth of the groove 32 and the steeper tooth back slopes on both sides of the convex tooth 31, when adjusting the support angle of the rotating member 2, the engagement relationship between the elastic bar 4 and the first notch 7 can be released first, and then the angle of the rotating member 2 can be adjusted. Figure 4-5As shown, since the depth of the groove 32 is small and the tooth back slopes on both sides of the convex teeth 31 are gentle, and a smooth transition connection is formed between the groove 32 and the convex teeth 31 on both sides, when adjusting the support angle of the rotating member 2, it is not necessary to release the engagement relationship between the spring bar 4 and the first notch 7. In this structure, the relationship between the spring bar 4 and the adjustment toothed disc 3 is a two-way damping adjustment. Figure 6-7 As shown, since the depth of the groove 32 is large, and the tooth back slope on one side of the convex tooth 31 is gentler and the tooth back slope on the other side is steeper, when adjusting the support angle of the rotating member 2, when the adjustment direction of the rotating member is along the gentle tooth back slope, it is not necessary to release the engagement relationship between the spring bar 4 and the first notch 7, and the spring bar 4 can slide along the gentle tooth back slope on one side of the convex tooth 31 to another groove 32. When the adjustment direction of the rotating member is opposite, the steeper tooth back slope on the other side of the convex tooth 31 will limit the sliding of the spring bar 4, so that it is pressed tightly in the current groove 32. At this time, it is necessary to release the engagement relationship between the spring bar 4 and the first notch 7 before continuing to adjust the rotating member 2 to rotate in the opposite direction. In this structure, the spring bar 4 is a one-way damping adjustment.

[0044] For example, Figure 1-3 As shown, when the support angle of the rotating member 2 needs to be adjusted, it is only necessary to eliminate the engagement between the spring bar 4 and the first rotating rod 21, and the spring bar 4 will be separated from the adjusting toothed disc 3. When the preset angle is adjusted, the spring bar 4 is placed in the new groove 32, and then the spring bar 4 is engaged with the first rotating rod 21 to achieve a new limit. When adjusting the rotation angle of the entire bracket, it is only necessary to first apply force to the handle 9 in the axial direction of the shaft member 1, and then move it to the outside of the gap where the first notch 7 is located, so that the spring bar 4 will be separated from the adjusting toothed disc 3.

[0045] For example, Figure 1-2As shown, the second rotating rod 22 and the spring bar 4 can be connected by a sleeve ring, and the height of the cylinder at the second notch 8 is slightly wider than the diameter width of the spring bar 4, so that one end of the spring bar can be fixed, and the spring bar 4 will not be restricted from moving circumferentially along the axis of the cylinder at the second notch 8. At the same time, when the entire corner positioning structure is in a loose state, the spring bar 4 can not only move circumferentially around the connecting column at the second notch 8, but also swing circumferentially in a small range on the plane where the first rotating rod 21 and the second rotating rod 22 are located with the connecting column at the second notch 8 as the center of the circle. Therefore, when the spring bar 4 is separated from the groove 32, the spring bar 4 can be completely separated from the adjusting toothed disc 3. After separation, the rotating member 2 is rotated to adjust it to the required angle value corresponding to a certain groove 32. If you want to position the angle amplitude later, you only need to insert the spring bar 4 into the groove 32 corresponding to the angle value on the adjustment toothed disc 3, and then apply force to the spring bar 4 along the edge of the first rotation 21 toward the direction of the axis member 1, so that the spring bar 4 bends due to the force, and then the other end of the spring bar 4 can be moved into the first notch 7. At this time, the spring bar 4 is locked due to the spring pressure, and the entire angle positioning structure enters the locking state. Unless there is external force, the entire angle positioning structure will continue to be in the spring pressure locking state. It is precisely because of this spring pressure that when the entire angle positioning structure is in the locked state and the entire support frame is moved, there will be no scattered parts, and there is no need to readjust the interval angle value between the rotating member 2 and the bottom plate 6 after the movement.

[0046] For example, Figure 1-7 As shown, the fixing member 5 is fixed to the back of the bottom plate 6 by riveting. The fixing member 5 and the bottom plate 6 can be fixedly connected by rivets, welding, bonding, etc., or fixedly connected by an integral molding method during manufacturing. It should be noted that the bottom plate 6 is only a sample style that appears with the support frame example. If the example item is a chair, the bottom plate 6 will be converted into a chair back or armrest, etc. The bottom plate 6 is only the object to which the fixing member 5 is attached, which may vary depending on different application fields.

[0047] It should be noted that Figures 1 to 7 The four 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 7In the embodiment, the entire corner positioning structure is positioned on the base plate 6; 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 in 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, except that the object to which they are attached or the functional attributes are different; 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.

[0048] For example, in Figures 1 to 7 In the two corner positioning structure cases shown, the only component related to the power system is the handle 9, and the power source is actually the operator himself. The power source can be the human body itself, or it can be electricity, magnetism, gravity, etc. If the power source in the power system is replaced with an intelligent electronic machine, it can be associated with the intelligent control system in various intelligent electronic machines. At this time, its applicable field will extend to the remote control field of various intelligent machines, such as intelligent remote switch control of various doors and windows, intelligent remote switch control of various valves, and intelligent remote switch control of various supports.

[0049] The most difficult to understand of the five basic design elements in the corner positioning structure principle is the adjustment control system. For example, Figure 1-7 As shown in the figure, in these two cases of angle positioning structure, the design elements related to the adjustment control system include the adjustment toothed disc 3, the spring bar 4, and the first notch 7 and the second notch 8 on the rotating member 2. The limit relationship in the adjustment control system usually includes four different combinations, namely, round limit, two-way rotation limit, one-way rotation limit, and damping limit. Figures 1 to 7 The implementation examples shown in the figure use four different limiting methods: round package limiting, two-way rotation limiting, one-way rotation limiting, and damping limiting. 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 limiting concave and convex form, side surface damping concave and convex form, strip clamping tooth form, and strip clamping hole form. Figure 1-7 The implementation examples shown mainly use two types of angle division components, namely, internal gear and external gear. Each control system contains one or more components that can store energy and quickly release the stored energy. The components can be tangible or intangible, such as tangible springs, elastic bars, rubber bands, etc., or intangible magnetic force, gravity, etc.

[0050] There is at least one pair of rotational relationships between the fixed part and the rotating part, and they cannot all be fixed connection relationships. If the fixed part and the rotating part are fixedly connected, the rotational relationship does not exist. In the same specific component, other basic design elements can exist by attaching to any one of the fixed parts or the rotating parts. The relevant components in the adjustment and control system can exist alone, or they can be combined with any of the four basic design elements of the fixed part, the axial part, the rotating part, and the power system. For example, the handle 9 on the spring bar 4 should belong to the components of the power system, and the other parts of the spring bar 4 should belong to the components of the adjustment and control system. Therefore, the same component spring bar 4 also contains two different design elements of the adjustment and control system and the power system.

[0051] If only Figure 1-7 For example, the corner positioning structure shown in the figure is formed by combining the spring bar 4, the adjusting toothed disc 3, the first notch 7 on the first rotating rod 21, and the second notch 8 on the second rotating rod 22, and by means of the elasticity and toughness of the spring bar 4, a spring-pressed locking structure is formed. The spring-pressed locking structure can effectively limit the rotation of the rotating member 2 in the corner positioning structure, and accurately control the rotation amplitude after each angle adjustment. The corner positioning structure can provide a stable support effect for the entire support frame, making the operation process of re-adjusting the support angle value each time simple and quick, and at the same time effectively preventing the problem of parts scattering when moving the entire corner positioning structure, avoiding the support angle adjustment process again after each shift.

[0052] 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 rotation angle positioning structure based on spring bars and gears, characterized in that: It comprises an adjusting toothed disc (3) and a fixing member (5) mounted on a bottom plate (6), the fixing member (5) being connected to an axial member (1), the axial member (1) being connected to a rotating member (2), and the rotating member (2) being rotatable relative to the fixing member (5); The adjusting toothed disc (3) is provided with a plurality of protruding teeth (31), the plurality of protruding teeth (31) are arranged in the shape of an arc with the rotation center of the rotating member (2) as the center of the circle, and a groove (32) is formed between two adjacent protruding teeth (31); The rotating member (2) is provided with an elastic bar (4), and the elastic bar (4) can be inserted into the corresponding groove (32) after the rotation angle of the rotating member (2) is adjusted, and the pressure value of the groove (32) on the elastic bar (4) is F, and F>0.

2. The angle positioning structure based on spring bars and gears according to claim 1 is characterized in that: The rotating member (2) comprises a first rotating rod (21) and a second rotating rod (22); the first rotating rod (21) is mounted on one end of the shaft member (1), and the second rotating rod (22) is mounted on the other end of the shaft member (1).

3. The angle positioning structure based on spring bars and gears according to claim 2 is characterized in that: The first rotating rod (21) is provided with a first notch (7), the second rotating rod (22) is provided with a second notch (8), and the two ends of the elastic bar (4) are movably connected to the first notch (7) and the second notch (8) respectively.

4. The angle positioning structure based on spring bars and gears according to claim 3 is characterized in that: When the two ends of the elastic bar (4) are respectively located in the first notch (7) and the second notch (8), the elastic bar (4) is inserted into the corresponding groove (32) and generates a squeezing force therewith; when one end of the elastic bar (4) is located in the second notch (8) and the other end is separated from the first notch (7), the elastic bar (4) is separated from the groove (32).

5. The angle positioning structure based on elastic bars and gears according to any one of claims 1 to 4, characterized in that: The fixing member (5) comprises a first fixing block (51) and a second fixing block (52); one end of the shaft member (1) passes through the first fixing block (51), and the other end passes through the second fixing block (52).

6. The angle positioning structure based on spring bars and gears according to claim 5, characterized in that: The adjusting toothed disc (3) is located between the first fixing block (51) and the second fixing block (52), and can be translated along the axis member (1) toward the first fixing block (51) or the second fixing block (52) as required.

7. The angle positioning structure based on spring bars and gears according to claim 6, characterized in that: The shaft core (1) passes through the adjusting toothed disc (3), and the connection between the shaft core (1) and the adjusting toothed disc (3) is located at the center of the disc arc of the adjusting toothed disc (3).

8. The angle positioning structure based on elastic bars and gears according to any one of claims 1 to 4, characterized in that: The cross section of the adjusting toothed disc (3) is semicircular or circular.

9. The angle positioning structure based on spring bars and gears according to claim 8, characterized in that: The plurality of protruding teeth (31) on the adjusting toothed disc (3) form an outward-facing toothed disc structure or an inward-facing toothed disc structure.

10. The angle positioning structure based on elastic bars and gears according to any one of claims 1 to 4, characterized in that: A handle (9) is provided at one end of the elastic bar (4), and the handle (9) is used to drive the elastic bar (4) to engage in or disengage from the groove (32) during the process of adjusting the rotation angle of the rotating member (2).

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