Corner positioning structure based on plug pin and hole wheel

Abstract

The utility model discloses a corner positioning structure based on a bolt and a hole wheel, which comprises a fixed part and a hole wheel which are arranged on a bottom plate, the fixed part is connected with an axis part, the axis part is connected with a rotating part, and the rotating part can rotate relative to the fixed part; a plurality of insertion holes are formed in the hole wheel, and the insertion holes are arranged in an arc line shape with the rotating center of the rotating piece as the circle center; the rotating part is provided with a plug pin, the plug pin can slide in the direction parallel to the axis of the inserting hole, the plug pin is sleeved with a spring, and the spring is used for driving the plug pin to be inserted into the corresponding inserting hole after the rotating angle of the rotating part is adjusted. The fixing piece and the hole wheel are arranged on the bottom plate, the axis piece penetrates through the fixing piece and the hole wheel, the rotating piece is connected to the axis piece, the plug pin is arranged on the rotating piece and matched with the hole wheel, and therefore the purposes of improving stability, reducing the position control difficulty of a supporting point and avoiding the scattering phenomenon in the lifting process 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 a latch and a hole wheel. 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, folding equipment and products with adjustable angles. 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 rotation angle positioning structure based on a latch and a hole wheel, by arranging a hole wheel on a bottom plate, passing an axial member through the hole wheel, and arranging a latch on a rotating member to cooperate with the hole wheel, so as to solve the problems of poor stability, difficult control of the support point position, and easy scattering when lifting in the prior art.

[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 a latch and a hole wheel, comprising a fixing member and a hole wheel mounted on a base plate, the fixing member being connected to an axial member, the axial member being connected to a rotating member, the rotating member being rotatable relative to the fixing member; a plurality of insertion holes are arranged on the hole wheel, the plurality of insertion holes are arranged in the shape of an arc with the rotation center of the rotating member as the center of the circle; a latch is provided on the rotating member, the latch can slide in a direction parallel to the axis of the insertion hole, a spring is sleeved on the latch, the spring is used for driving the latch to be inserted into the corresponding insertion hole after the angle of the rotating member is adjusted.

[0007] 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.

[0008] In some embodiments, the hole wheel is located between the first fixing block and the second fixing block, or the hole wheel is located on one side of the first fixing block or the second fixing block, and the shaft core member passes through the hole wheel.

[0009] 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; when the hole wheel is located between the first fixed block and the second fixed block, a first sleeve, a second sleeve and a connecting strip are arranged between the first rotating rod and the second rotating rod, the spring is located in the first sleeve, between the first sleeve and the second sleeve, and a notch is arranged on the connecting strip for avoiding the hole wheel; when the hole wheel is located on one side of the first fixed block or the second fixed block, a first sleeve is arranged between the first rotating rod and the second rotating rod.

[0010] In some embodiments, when the hole wheel is located between the first fixed block and the second fixed block, the first sleeve, the second sleeve, the first rotating rod, the second rotating rod and the connecting strip are fixedly connected; when the hole wheel is located on one side of the first fixed block or the second fixed block, the two ends of the first sleeve are fixedly connected to the first rotating rod and the second rotating rod respectively.

[0011] In some embodiments, the latch includes a pull ring, an insertion rod, a limiting protrusion and a plug; one end of the insertion rod is fixedly connected to the pull ring, and the other end is detachably fixedly connected to the limiting protrusion, and the plug is located on the limiting protrusion at one end away from the insertion rod.

[0012] In some embodiments, a through hole and an outlet are provided on the rotating member, and the latch is slidably disposed in the through hole; the pull ring is located outside the rotating member close to the outer side of the through hole; the limiting protrusion is located between the pull ring and the hole wheel; and the spring is sleeved on the insertion rod between the pull ring and the limiting protrusion.

[0013] In some embodiments, when the radial size of the through hole is larger than the radial size of the spring and the limiting protrusion, a bolt matching the size is arranged inside the through hole, the insertion rod can pass through the hole on the bolt, and the pull ring and the limiting protrusion cannot pass through the hole on the bolt; when the radial size of the through hole is smaller than the radial size of the spring and the limiting protrusion, the radial size of the outlet is larger than the radial size of the spring and the limiting protrusion, the limiting protrusion and the spring on the latch can pass through the outlet on the rotating part, but cannot pass through the insertion hole on the hole wheel.

[0014] In some embodiments, the rotating surface formed when the rotating member rotates is parallel to the sector surface where the multiple holes on the hole wheel are located, and the axis of the pin is perpendicular to the sector surface where the multiple holes on the hole wheel are located.

[0015] In some embodiments, when the hole wheel is located between the first fixed block and the second fixed block, the notch width value is smaller than the sum of the length value of the limiting protrusion and the disk arc thickness value of the hole wheel; when the hole wheel is located on one side of the first fixed block or the second fixed block, the spacing value between the hole wheel and the rotating part is smaller than the length value of the limiting protrusion.

[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 is provided with a fixing part, an axle part, a rotating part, a hole wheel, a latch and a spring, so that the rotating part can rotate around the axle part, and the rotation trajectory corresponds to the arrangement trajectory of the insertion holes on the hole wheel, and cooperates with the latch and the spring on the rotating part. When the rotating part rotates to the angle required for the support, the spring is released and the latch is inserted into the insertion hole to realize the limitation of the latch by the hole wheel, that is, the limitation of the rotating part. When it is necessary to adjust the rotation angle of the rotating part, it is only necessary to pull the pull ring to contract or extend the spring, so that the latch is separated from the insertion hole. After the limitation is released, the rotation angle adjustment of the rotating part can be realized. After determining the adjustment angle, the latch is inserted into the insertion hole, and the corner limitation can be realized again. The structure mainly realizes the corner limitation by cooperating with the latch and the insertion hole on the hole wheel, which can solve the problems of instability of the existing support structure, difficulty in controlling the position of the support point, or easy scattering when lifting.

[0018] 2. The hole wheel of the utility model can be set at any position along the shaft member. When the hole wheel is set in the middle of the shaft member, the support stability of the shaft member can be improved. When the hole wheel is set at the end of the shaft member, the hole wheel will not hinder the rotation of the rotating member, and there is no need to open a gap on the rotating member to avoid the hole wheel.

[0019] In general, the corner positioning structure in the utility model can achieve the purpose of improving stability, reducing the difficulty of controlling the support point position, and avoiding scattering when lifting by setting a fixing part and a hole wheel on the bottom plate, and passing an axial part through the fixing part and the hole wheel, connecting a rotating part to the axial part, and setting a pin on the rotating part to cooperate with the hole wheel. 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 A schematic diagram of the first corner positioning structure provided by the utility model;

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

[0023] Figure 3 A schematic diagram of a second corner positioning structure provided by the utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the internal structure behind the hidden bottom plate and some rotating parts;

[0025] Figure 5 It is a schematic diagram of the latch docking structure in the utility model.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] 1-bottom plate, 2-fixing part, 21-first fixing block, 22-second fixing block, 3-hole wheel, 31-jack, 4-axial part, 5-rotating part, 51-first rotating rod, 52-second rotating rod, 53-first sleeve, 54-second sleeve, 55-connecting strip, 56-notch, 57-through hole, 58-outlet, 6-bolt, 7-spring, 8-pin, 81-pull ring, 82-insertion rod, 83-limiting protrusion, 84-plug. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In the description of the present utility model, 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.

[0032] The embodiment of the utility model provides a corner positioning structure based on a pin and a hole wheel, including a fixing member 2 and a hole wheel 3 installed on a bottom plate 1. 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. Figure 1 and Figure 3 As shown, the fixing member 2 is connected to an axis member 4, and the axis member 4 is connected to a rotating member 5. The fixing member 2 here is mainly used to fix the entire corner positioning structure on the base plate 1. The function of the axis member 4 is to facilitate the rotation between the fixing member 2 and the rotating member 5. The main function of the rotating member 5 is to support and shape after rotation. The fixing member 2 and the rotating member 5 can rotate with each other. The fixing member 2 and the axis member 4 can be movably connected or fixedly connected, and the axis member 4 and the rotating member 5 can also be movably connected or fixedly connected. However, there is at least one pair of rotational relationships between the fixing member 2 and the rotating member 5, and they cannot all be fixedly connected. If the fixing member 2 and the rotating member 5 are in a fixedly connected relationship, the rotational relationship in the corner positioning will not exist.

[0033] The exemplary rotating member 5 provided in the embodiment of the utility model is a quadrilateral frame structure. The rotating member 5 can rotate around the shaft member 4, or the rotating member 5 can also rotate together with the shaft member 4 around the axis of the shaft member 4, that is, the rotating member 5 is rotated relative to the fixed member 2 and the base plate 1, and this rotation relationship can be achieved in a variety of ways. A series of adjustment and control components such as a hole wheel 3, a spring 7, a latch 8, etc. are added between the fixed member 2, the shaft member 4, and the rotating member 5 for adjusting the rotation amplitude and controlling the two different states of freedom and locking of the entire rotating positioning structure; at the same time, a pull ring 81 for facilitating the provision of power is also connected to the latch 8.

[0034] Next, Figures 1 to 4 Taking the embodiment in the figure as an example, the installation structure of the axis member 4 is illustrated. The axis member 4 is installed on the base plate 1 through the fixing member 2. The fixing member 2 includes a first fixing block 21 and a second fixing block 22. One end of the axis member 4 passes through the first fixing block 21, and the other end passes through the second fixing block 22. Specifically, the axis member 4 is installed on the base plate 1 through the first fixing block 21 and the second fixing block 22. It should be noted that the fixing member 2 and the base plate 1 can be connected by direct welding, bonding, etc., which is not limited here, as long as the purpose of stable connection and support can be achieved. Similarly, the fixing member is not limited to the two fixing blocks in the embodiment of the utility model. In other embodiments, the fixing block can also be set to one or more, which is not limited here. Back to the embodiment of the utility model, the first fixing block 21 and the second fixing block 22 are respectively arranged at the two ends of the axis member 4, and the symmetrical structure meets the aesthetics and stability of the corner structure.

[0035] by Figures 1 to 4 The embodiment in the figure is taken as an example to illustrate the installation structure of the rotating member 5. The rotating member 5 is connected to the entire rotating angle positioning structure through the shaft member 4. The rotating member 5 includes a first rotating rod 51, a second rotating rod 52, a first sleeve 53, a second sleeve 54, a connecting strip 55, a notch 56, a through hole 57, and an outlet 58. The ends of the first rotating rod 51 and the second rotating rod 52 are respectively connected to the two ends of the shaft member 4. Figures 1 to 4 In the two implementation cases shown in the figure, the connection method adopted is a movable connection. The first sleeve 53, the second sleeve 54, and the connecting strip 55 are respectively connected to the first rotating rod 51 and the second rotating rod 52, and the connection method adopted is a fixed connection. The notch 56, the through hole 57 and the outlet 58 are special structures on the rotating member 5. The notch 56 is located between the first sleeve 53 and the second sleeve 54, and on the connecting strip 55, and its function is to avoid the hole wheel 3 and ensure that the rotation of the rotating member 5 is not affected. The through hole 57 is located on the first rotating rod 51 close to the pull ring 81, and the outlet 58 is located on the second rotating rod 52.

[0036] by Figures 1 to 4The embodiment in the figure is taken as an example to illustrate the installation structure and position of the hole wheel 3. The hole wheel 3 and the bottom plate 1 are fixedly connected, and the connection method can be welding, bonding, etc., which is not limited here, as long as it can be stably connected. Figures 1 to 4 In the two implementation cases shown in the figure, the connection between the hole wheel 3 and the shaft member 4 is a movable connection. In other implementation cases, the hole wheel 3 and the shaft member 4 can actually be fixedly connected. The hole wheel 3 can be located between the first rotating rod 51 and the second rotating rod 52, or it can be located on one side of the first rotating rod 51 or the second rotating rod 52. When the hole wheel 3 is located between the first rotating rod 51 and the second rotating rod 52, the hole wheel 3 can be located at any position on the shaft member 4 between the first rotating rod 51 and the second rotating rod 52, and there is no limitation here. Figure 1 and Figure 2 In the embodiment shown, the hole wheel 3 is located in the middle position on the shaft member 4 between the first rotating rod 51 and the second rotating rod 52. This position can make the entire rotating angle positioning structure look symmetrical and beautiful, and can improve the stability of the overall structure. Figure 3 and Figure 4 In the embodiment of the present invention, the hole wheel 3 is located on a side close to the second rotating rod 52, and Figure 1 and Figure 2 Compared with the implementation case shown, the advantage of this arrangement is that the overall structure is relatively simpler and the cost is lower. The disadvantage is that the support stability will be reduced. Since it is easy to wear or loosen during use, this type of implementation case may show lateral deviation after long-term use.

[0037] by Figures 1 to 5 Taking the embodiment in the figure as an example, the installation structure and position of the latch 8 are illustrated. The main part of the latch 8 is located inside the first sleeve 51. The latch 8 includes a pull ring 81, an insertion rod 82, a limiting protrusion 83, and a plug 84. The pull ring 81 is located outside the rotating member 5 near the outer side of the through hole 57. The reason for this position is that the position of the plug 84 on the latch 8 must correspond to the position of the socket 31, and the pull ring 81 is a part of the latch 8. The main function of the pull ring 81 is to provide a force application point for the mobile latch 8 to facilitate force application. The setting shape of the force application point can be annular, as shown in FIG. Figures 1 to 4As shown in , however, it can actually be other different forms such as T-shaped or L-shaped, and no specific restrictions are made here. A cushion or anti-slip pattern can be provided on the pull ring 81 to improve the anti-slip property and comfort when moving the plug 8. The insert rod 82 is located between the pull ring 81 and the limiting protrusion 83, and its cross-sectional radial size must be smaller than the radial size of the inner diameter of the spring 7. The limiting protrusion 83 is located between the pull ring 81 and the hole wheel 3. The radial size of the outer ring of the limiting protrusion 83 is smaller than the inner diameter of the first sleeve 53, larger than the radial size of the inner diameter of the spring 7, and larger than the aperture size of the socket 31. The position of the limiting protrusion 83 is determined by its function. The main function of the limiting protrusion 83 is to limit the depth of the plug 84 inserted into the socket 31, and at the same time to provide a fulcrum for driving the spring 7 when pulling the plug 8. The insert rod 82 and the limiting protrusion 83 in the plug 8 are fixedly connected by a thread, as shown in FIG. Figure 5 As shown in , the connection position between the two is located inside the limiting protrusion 83. The reason for this arrangement is to facilitate the placement of the bolt 6 on the plug rod 82 between the pull ring 81 and the limiting protrusion 83, and then connect the front and rear parts of the plug 8 into a whole through threaded docking, so as to facilitate the transmission of force when pushing and pulling the plug 8. Of course, the front and rear docking positions of the plug 8 can also be the overlapping positions of the pull ring 81 and the plug rod 82. The position of the plug 84 corresponds to the socket 31 on the hole wheel 3, and is fixedly connected to the limiting protrusion 83. The plug 84 can be inserted into the inside of the second sleeve 54 after passing through the socket 31.

[0038] by Figures 1 to 4 Taking the embodiment in the figure as an example, the installation position and function of the spring 7 are described. The spring 7 is located on the insertion rod 82 between the pull ring 81 and the limiting protrusion 83, and is also located inside the first sleeve 53. The first sleeve 53 can limit the running track of the latch 8, and the insertion rod 82 and the limiting protrusion 83 on the latch 8 can limit the running track of the spring 7. The main function of the spring 7 is to store energy and quickly release the stored energy.

[0039] by Figure 1 and Figure 2Taking the embodiment in the figure as an example, the angle adjustment process of the entire angle positioning structure is illustrated. The hole wheel 3 is provided with a plurality of sockets 31 on the other side along the bottom plate 1, and the shaft member 4 penetrates the hole wheel 3. The plurality of sockets 31 are arranged in the shape of an arc line with the penetration point of the shaft member 4 and the hole wheel 3 as the center of the circle; that is, the position of each socket 31 is different, and the plurality of sockets 31 are arranged in the shape of an arc, and the connection point with the shaft member 4 is the center of the circle, so that the rotation trajectory of the rotating member 5 can correspond to the arrangement shape of the plurality of sockets 31, and the rotating member 5 is provided with a through hole 57 at a position close to the pull ring 81, and a bolt 6 is installed in the through hole 57, and the bolt 6 has a thread, and the thread size is adapted to the thread size on the through hole 57; the bolt 6 has a hole for the insertion rod 82 to pass through, and the insertion rod 82 is sleeved with a spring 7. When the spring 7 is in a free state, the plug 84 on the plug rod 8 is inserted into a certain plug hole 31 on the hole wheel 3; when the spring 7 is in a stretched or contracted state, the plug 84 on the plug rod 8 is separated from the single plug hole 31. By setting the spring 7, after each adjustment is completed and the hand is released, the pin 8 can be controlled to automatically insert into the corresponding socket 31 to achieve positioning. When the rotation support angle of the rotating member 5 needs to be adjusted, it is only necessary to apply force to the pin 8 through the pull ring 81, and the pull ring 81 is used to drive the entire pin 8 to move, and then the spring 7 is deformed under the cooperative action of the limiting protrusion 83. When the plug 84 moves to disengage from the corresponding socket 31, the angular restriction of the rotating member 5 by the hole wheel 3 can be released. At this time, the rotating member 5 can rotate relative to the fixing member 2 and the base plate 1. When the rotating member 5 is adjusted to the expected support angle, it is only necessary to stop applying force to the pull ring 81. At this time, the pin 8 will return to its original state under the action of the elastic force of the spring 7, and the plug 84 will be reinserted into the corresponding socket 31, thereby completing the gear adjustment process of the entire angular positioning structure.

[0040] The main function of the bolt 6 is to allow the limiting protrusion 83 and the spring 7 to pass through the through hole 57 and enter the interior of the first sleeve 53, and at the same time, after being butted and locked with the thread at the through hole 57, limit the spring 7 and the limiting protrusion 83 from being out of the control range of the first sleeve 53. When the spring 7 is in a compressed state, the plug 84 is out of the single plug hole 31, and the bolt 6 can ensure that the spring 7 will not be pulled out of the restricted range of the first sleeve 53, and at the same time, the hole on the bolt 6 can provide a moving path for the movement of the entire latch 8.

[0041] The main function of the first sleeve 53 is to provide a guide for the moving track of the plug 8 when the plug 8 is moved, and to prevent the moving track of the plug 8 and the spring 7 from being offset when the plug 84 is separated from the socket 31, thereby affecting the stability of the entire corner positioning structure. Therefore, the first sleeve 53 is Figures 1 to 4In the two different implementation cases, the first rotating rod 51 on the rotating member 5 is fixedly connected. The main function of the connecting strip 55 is to reinforce the fixed connection relationship. When the hole wheel 3 is located between the first fixing block 21 and the second fixing block 22, as shown in FIG. Figure 1 and Figure 2 As shown in FIG. 1 , a first sleeve 53, a second sleeve 54, and a connecting bar 55 are disposed between the first rotating rod 51 and the second rotating rod 52. The first sleeve 53, the first rotating member 51, and the connecting bar 55 are fixedly connected. When the hole wheel 3 is located on one side of the first fixing block 21 or the second fixing block 22, as shown in FIG. Figure 3 and Figure 4 As shown in FIG. 1 , a first sleeve 53 is disposed between the first rotating rod 51 and the second rotating rod 52. Both ends of the first sleeve 53 are fixedly connected to the first rotating member 51 and the second rotating member 52, respectively.

[0042] The radial size of the aperture of the through hole 57 on the rotating member 5 is related to the position of the hole wheel 3. When the hole wheel 3 is located between the first fixing block 21 and the second fixing block 22, if you want to place the spring 7 and the limiting protrusion 83 into the first sleeve 53, you can either enter from the through hole 57 or from the outlet 58 at the rear end of the second sleeve 54. If you choose to enter from the through hole 57, the specific example is as follows: Figure 1 and Figure 2 As shown in , a bolt 6 is needed to assist. At this time, there is no need to set an outlet 58 at the tail end of the second sleeve 54, and the radial size of the aperture of the second sleeve 54 only needs to be compatible with the circumferential radial size of the plug 84. If the spring 7 and the limiting protrusion 83 are selected to enter the interior of the first sleeve 53 from the outlet 58 at the tail end of the second sleeve 54, it is necessary to open an outlet 58 at the tail end of the second sleeve 54, and at the same time, the radial size of the aperture of the second sleeve 54 is increased to allow the spring 7 and the limiting protrusion 83 to pass through. At this time, the radial size of the aperture at the through hole 57 only needs to allow the insertion rod 82 to pass smoothly. When the hole wheel 3 is located on one side of the first fixing block 21 or the second fixing block 22, if you want to place the spring 7 and the limiting protrusion 83 into the first sleeve 53, there will also be two different options, either entering from the through hole 57, or entering from the outlet 58 of the first sleeve 53 close to the hole wheel 3. Regardless of whether it is Figure 1 and Figure 2 In the implementation cases, Figure 3 and Figure 4 In the implementation case, the exit aperture size of the first sleeve 53 near the hole wheel 3 is set to allow the spring 7 and the limiting protrusion 83 to enter. Therefore, at this time, the aperture size of the through hole 58 only needs to allow the insertion rod 82 to pass smoothly and is smaller than the radial size of the outer diameter of the spring 7, preferably adapted to the radial size of the cross section of the insertion rod 82, as shown in the specific example. Figure 3 and Figure 4 as shown in .

[0043] The rotating surface formed when the rotating member 5 rotates is parallel to the sector surface where the plurality of insertion holes 31 on the hole wheel 3 are located, and the straight line where the latch pin 8 is located is perpendicular to the sector surface where the plurality of insertion holes 31 on the hole wheel 3 are located. Figures 1 to 4 As shown in . The rotating surface formed when the rotating member 5 rotates must be parallel to the sector surface where the sockets 31 on the hole wheel 3 are located, otherwise it will affect the docking between the plug 8 and the hole wheel 3. Only when the plug 8 is perpendicular to the sector surface where the many sockets 31 on the hole wheel 3 are located, it is most conducive to the plug 84 to enter and exit the socket 31. Special reminder, the first rotating rod 51 and the second rotating rod 52 do not have to be perpendicular to the straight line where the shaft member 4 is located, and the first rotating rod 51 and the second rotating rod 52 do not have to be equal in length or parallel. The rotating surface formed when the rotating member 5 rotates can be a plane or a curved surface. When the rotating surface of the rotating member 5 is a curved surface, the sector surface where the many sockets 31 on the hole wheel 3 are located should correspond to and be parallel to it, and the plug 8 should still be perpendicular to the sector surface where the many sockets 31 on the hole wheel 3 are located. At this time, the straight line where the plug 8 is located may no longer be parallel to the straight line where the shaft member 4 is located.

[0044] When the hole wheel 3 is located between the first fixing block 21 and the second fixing block 22, the width of the notch 56 should be smaller than the sum of the length of the limiting protrusion 83 and the thickness of the arc on the gear 3; when the hole wheel 3 is located on one side of the first fixing block 21 or the second fixing block 22, the spacing between the hole wheel 3 and the rotating member 2 should be smaller than the length of the limiting protrusion 83. If the width or spacing is too large, when the limiting protrusion 83 is pulled toward the pull ring 81, the edge of the limiting protrusion 83 close to the spring 7 is easily stuck on the edge of the first sleeve 53 close to the hole wheel 3, which will affect the adjustment process of the entire angle positioning structure, increase unnecessary adjustment steps, and further affect normal use.

[0045] It should be noted that Figures 1 to 5 The two 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 Figure 1 and Figure 5In 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, but they are different because of their attached objects or 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.

[0046] For example, in Figures 1 to 5 In the two corner positioning structure cases shown, the only component related to the power system is the handle 81, 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.

[0047] The most difficult to understand of the five basic design elements in the corner positioning structure principle is the adjustment control system. For example, Figures 1 to 5 As shown in the figure, in these two cases of angle positioning, the design elements related to the adjustment control system include hole wheel 3, latch 8, bolt 6, and spring 7. 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 5 The 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 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 5 The implementation example shown in the figure mainly uses an inner hole wheel as an angle division component. Each adjustment control system contains one or more components that can store energy and quickly release the stored energy. The component can be tangible or intangible, such as a tangible spring, elastic bar, rubber band, etc., or an intangible magnetic force, gravity, etc.

[0048] There is at least one pair of rotational relationships between the fixed part and the rotating part, and not all of them are 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 regulating and controlling 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 pull ring 81 in the latch 8 should belong to the components in the power system, while the plug 82, the limit protrusion 83, and the plug 84 are all components in the regulating and controlling system. Therefore, the same component, the latch 8, contains two different design elements of the regulating and controlling system and the power system.

[0049] If only Figures 1 to 5 For the two corner positioning structure cases shown in the figure, a latch lock structure is formed by combining the latch 8, the rotating member 5, the hole wheel 3, and the spring 7, with the help of the energy storage and release function of the spring 7. The latch lock structure can effectively limit the rotation of the rotating member 5 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.

[0050] 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 a latch and a hole wheel, characterized in that: It comprises a fixing member (2) and a hole wheel (3) mounted on a bottom plate (1), the fixing member (2) is connected to an axial member (4), the axial member (4) is connected to a rotating member (5), and the rotating member (5) is rotatable relative to the fixing member (2); The hole wheel (3) is provided with a plurality of insertion holes (31), and the plurality of insertion holes (31) are arranged in the shape of an arc with the rotation center of the rotating member (5) as the center of the circle; The rotating member (5) is provided with a latch pin (8), which can slide in a direction parallel to the axis of the insertion hole (31). A spring (7) is sleeved on the latch pin (8), and the spring (7) is used to drive the latch pin (8) to be inserted into the corresponding insertion hole (31) after the rotation angle of the rotating member (5) is adjusted.

2. The angle positioning structure based on the latch and the hole wheel according to claim 1 is characterized in that: The fixing member (2) comprises a first fixing block (21) and a second fixing block (22); one end of the shaft member (4) passes through the first fixing block (21), and the other end passes through the second fixing block (22).

3. The angle positioning structure based on the latch and the hole wheel according to claim 2 is characterized in that: The hole wheel (3) is located between the first fixing block (21) and the second fixing block (22), or the hole wheel (3) is located on one side of the first fixing block (21) or the second fixing block (22), and the shaft core (4) passes through the hole wheel (3).

4. The angle positioning structure based on the latch and the hole wheel according to claim 3 is characterized in that: The rotating member (5) comprises a first rotating rod (51) and a second rotating rod (52), wherein the first rotating rod (51) is mounted on one end of the shaft member (4), and the second rotating rod (52) is mounted on the other end of the shaft member (4); When the hole wheel (3) is located between the first fixed block (21) and the second fixed block (22), a first sleeve (53), a second sleeve (54) and a connecting strip (55) are provided between the first rotating rod (51) and the second rotating rod (52); the spring (7) is located in the first sleeve (53), between the first sleeve (53) and the second sleeve (54), and a notch (56) for avoiding the hole wheel (3) is provided on the connecting strip (55); When the hole wheel (3) is located on one side of the first fixed block (21) or the second fixed block (22), a first sleeve (53) is provided between the first rotating rod (51) and the second rotating rod (52).

5. The angle positioning structure based on the latch and the hole wheel according to claim 4 is characterized in that: When the hole wheel (3) is located between the first fixed block (21) and the second fixed block (22), the first sleeve (53), the second sleeve (54), the first rotating rod (51), the second rotating rod (52) and the connecting bar (55) are fixedly connected; when the hole wheel (3) is located on one side of the first fixed block (21) or the second fixed block (22), the two ends of the first sleeve (53) are fixedly connected to the first rotating rod (51) and the second rotating rod (52) respectively.

6. The angle positioning structure based on the latch and the hole wheel according to claim 5, characterized in that: The latch (8) comprises a pull ring (81), an insertion rod (82), a limiting protrusion (83) and a plug (84); one end of the insertion rod (82) is fixedly connected to the pull ring (81), and the other end is fixedly connected to the limiting protrusion (83) in a detachable manner; the plug (84) is located on the end of the limiting protrusion (83) that is away from the insertion rod (82).

7. The angle positioning structure based on the latch and the hole wheel according to claim 6, characterized in that: The rotating member (5) is provided with a through hole (57) and an outlet (58), and the latch (8) is slidably arranged in the through hole (57); the pull ring (81) is located outside the rotating member (5) and close to the outer side of the through hole (57); the limiting protrusion (83) is located between the pull ring (81) and the hole wheel (3); the spring (7) is sleeved on the insertion rod (82) between the pull ring (81) and the limiting protrusion (83).

8. The angle positioning structure based on the latch and the hole wheel according to claim 7, characterized in that: When the radial size of the through hole (57) is larger than the radial size of the spring (7) and the limiting protrusion (83), a bolt (6) of a size matching the through hole (57) is arranged inside the through hole (57), the insertion rod (82) can pass through the hole on the bolt (6), and the pull ring (81) and the limiting protrusion (83) cannot pass through the hole on the bolt (6); When the radial size of the through hole (57) is smaller than the radial size of the spring (7) and the limiting protrusion (83), the radial size of the outlet (58) is larger than the radial size of the spring (7) and the limiting protrusion (83), the limiting protrusion (83) on the latch (8) and the spring (7) can pass through the outlet (58) on the rotating member (5) but cannot pass through the insertion hole (31) on the hole wheel (3).

9. The angle positioning structure based on the latch and the hole wheel according to any one of claims 1 to 8, characterized in that: The rotating surface formed when the rotating member (5) rotates is parallel to the sector surface where the multiple insertion holes (31) on the hole wheel (3) are located, and the axis of the latch pin (8) is perpendicular to the sector surface where the multiple insertion holes (31) on the hole wheel (3) are located.

10. The angle positioning structure based on the latch and the hole wheel according to claim 6, characterized in that: When the hole wheel (3) is located between the first fixed block (21) and the second fixed block (22), the width of the notch (56) is smaller than the sum of the length of the limiting protrusion (83) and the arc thickness of the hole wheel (3); when the hole wheel (3) is located on one side of the first fixed block (21) or the second fixed block (22), the spacing between the hole wheel (3) and the rotating member (5) is smaller than the length of the limiting protrusion (83).

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