Screw quick-assembly positioning structure and quick-assembly hinge

Abstract

The invention relates to the technical field of hinges, in particular to a screw fast-assembly positioning structure and a fast-assembly hinge, the screw fast-assembly positioning structure comprises a screw and a positioning cylinder, the screw sequentially comprises a head part, a transition part and a threaded rod from top to bottom, the head part is connected with the inner wall of the positioning cylinder in a clamped mode, and an elastic clamping jaw is arranged on the top wall of the positioning cylinder in a protruding mode. A positioning inclined plane is arranged on the inner side wall of the positioning cylinder, the positioning inclined plane is gradually shrunk from top to bottom, when the screw and the positioning cylinder are assembled, the elastic clamping jaw is located above the top wall of the head part, the joint of the transition part and the head part abuts against the positioning inclined plane, and when the head part is stressed, the elastic clamping jaw is located above the top wall of the head part. The screw is downwards separated from the positioning cylinder, and the head of the screw is clamped by the positioning cylinder through non-fragmentation elastic separation of the positioning cylinder, so that the concentricity of the positioning cylinder and the screw can be ensured, and a threaded rod of the screw can be normally screwed into a plate to achieve an effective locking depth.

Description

TECHNICAL FIELD

[0001] The present application relates to the hinge technical field, and in particular to a screw quick-mounting positioning structure and a quick-mounting hinge. BACKGROUND

[0002] As a home hardware fitting, the hinge mainly undertakes the opening and closing connection function between the cabinet door and the cabinet body, and is widely used in wardrobes, cabinets and shoe cabinets. When the hinge is installed, the installer needs to screw and reinforce with installation tools to complete the installation of the hinge. In order to reduce the workload of searching for screws during installation, manufacturers usually provide several installation screws with the hinge. During the installation of the hinge, the installer needs to press and position the hinge with one hand and pinch and hold the screw with the other hand, and then controls the screwdriver with the other hand to tighten the screw. The operation is troublesome, the installation efficiency is low, and if the screw is slightly loose, the positioned product will be shifted, which affects the installation accuracy of the hinge.

[0003] In order to facilitate the installation of the hinge screw, solve the problem that the installer needs to press and position the hinge with one hand and hold the screw with the other hand, the existing technology directly integrates the fixed installation screw with the hinge body through a bracket, and the hinge is shipped in a complete set. During installation, the installer only needs to press and position the hinge with one hand, and controls the screwdriver with the other hand to tighten the screw. For example, a rear screw quick-mounting bracket of a slide-in hinge is disclosed in Chinese Patent No. CN218644632U. The rear end of the mounting seat made of elastic material is provided with an elastic clamp. The screw is clamped and fixed in the elastic clamp. The screw is positioned on the mounting hole at the rear end of the hinge through the elastic clamp and maintains a basic concentricity with the mounting hole. However, the screw will shake during screw tightening due to the limited positioning of the elastic clamp on the screw, which affects the installation accuracy of the hinge. For example, a front screw quick-mounting bracket of a slide-in hinge is disclosed in Chinese Patent No. CN218817497U. The screw is installed in the screw hole through a cylindrical mounting seat, and the inner threaded hole diameter of the mounting seat is smaller than or equal to the thread diameter of the screw, so as to stably position the screw and maintain a high concentricity between the screw and the mounting hole.

[0004] Since the quick-mounting bracket positions the screw thread rod, the quick-mounting bracket will occupy the axial length of the screw thread rod when the screw is normally screwed, which affects the screwing depth of the screw and further affects the installation stability of the hinge. However, due to the limited internal space condition of the hinge, the length of the screw cannot be effectively lengthened. Therefore, the screw is rotated during the fixing of the hinge, and the screw is screwed with the plate after crushing the quick-mounting bracket.

[0005] In view of the above related art, the inventors believe that there are the following defects: when the support collapses or cracks, the splashing of the support is random, and the broken support fragments may fall into the screw and base locking area, causing the screw to be not locked tightly or the screw to be not locked deeply enough, affecting the installation stability of the hinge; secondly, the splashed support fragments may fall into the hinge, and the hinge is a rotating mechanism, so the falling fragments may get stuck in the internal parts of the hinge, affecting the normal use of the hinge; during installation, there is a safety hazard of splashing and injuring people; or, the splashed support fragments increase the cleaning workload, and if a person steps on the support fragments by mistake, the person may be injured. SUMMARY

[0006] To solve the problem of quick installation and positioning of the hinge screw, the application provides a screw quick installation and positioning structure and a quick installation hinge.

[0007] In a first aspect, the application provides a screw quick installation and positioning structure using the following technical solution:

[0008] A screw quick installation and positioning structure includes a screw and a positioning cylinder. The screw is sequentially provided with a head, a transition part and a threaded rod from top to bottom. The head is connected with the inner wall of the positioning cylinder. The top wall of the positioning cylinder is provided with an elastic clamping jaw. The inner side wall of the positioning cylinder is provided with a positioning inclined surface. The positioning inclined surface is gradually contracted from top to bottom. When the screw is assembled with the positioning cylinder, the elastic clamping jaw is located above the top wall of the head, and the transition part is connected with the head and abuts against the positioning inclined surface. When the head is pressed, the screw is separated from the positioning cylinder downward.

[0009] Preferably, the diameter of the top wall of the head is A, and the axis length of the head is H. H:A = 1:2.3-2.7.

[0010] Preferably, an included angle a is formed between the positioning inclined surface and the axis of the positioning cylinder. The included angle a is 2.7°±0.3°. The outer side wall of the head is gradually contracted from top to bottom towards the transition part, and is matched with the included angle a.

[0011] Preferably, the positioning cylinder is provided with at least two groups of elastic clamping jaws. The two groups of elastic clamping jaws are oppositely arranged. The positioning cylinder is provided with a cutting groove and an elastic groove. The cutting groove is recessed from the inner side wall of the positioning cylinder towards the elastic clamping jaw. The elastic groove is arranged on both sides of the elastic clamping jaw. The elastic groove is recessed from the top wall of the positioning cylinder downward. The elastic clamping jaw is provided with an inclined surface part and a guide part. The inclined surface part is inclined from top to bottom. The guide part is inclined from the bottom of the inclined surface part downward.

[0012] Preferably, the positioning cylinder is made of elastic material, the head portion is in interference fit with the positioning slope, and the outer ring wall of the positioning cylinder is provided with a plurality of groups of grooves recessed from the outside towards the positioning cylinder, and when the grooves are provided in multiple groups, the grooves are arranged at intervals along the outer ring wall of the positioning cylinder.

[0013] Preferably, the positioning cylinder is provided with an avoiding slope and a plurality of groups of deformation grooves, the avoiding slope is arranged gradually shrinking upwards from the bottom wall of the positioning cylinder, the positioning slope and the avoiding slope intersect to form a positioning ring, and the deformation grooves are recessed upwards from the bottom wall of the positioning cylinder, part of the deformation grooves are located in the positioning slope, and when the deformation grooves are provided in multiple groups, two groups of the deformation grooves are arranged opposite to each other and perpendicular to the elastic clamping jaw.

[0014] In the second aspect, the application provides a quick installation hinge adopting the following technical scheme:

[0015] A quick installation hinge comprising the screw quick installation positioning structure described above, further comprising a one-word base, a hinge arm, a hinge cup and a rocker arm, the hinge arm is installed on the outer top wall of the one-word base, one side of the hinge arm is assembled with the hinge cup through the rocker arm, one end of the one-word base and the top wall of the other end of the one-word base are both provided with a screw quick installation positioning structure, the positioning cylinder is connected with the one-word base, the one-word base is provided with a through hole corresponding to the screw, the screw thread is located directly above the through hole, and the threaded rod is partially exposed from the bottom wall of the one-word base, when the hinge is installed with the plate, the screw slips out of the positioning cylinder, and the positioning cylinder is connected to the hinge.

[0016] Preferably, the screw quick installation positioning structure installed on the top wall of the one-word base is a first screw quick installation positioning structure, the first screw quick installation positioning structure further comprises a first support and a clamping jaw, the first support is in a cylindrical shape, a first positioning cylinder is connected above the first support, the side wall of the one-word base is provided with a clamping hole, the clamping jaw is in an L shape, one end of the clamping jaw is connected with the outer wall of the first support, the other end of the clamping jaw is provided with a clamping protrusion, the clamping protrusion is clamped in the clamping hole, and the bottom wall of the first support is provided with an extension, the extension is located in the opposite two side walls of the one-word base.

[0017] Preferably, the screw quick-mounting positioning structure mounted on the top wall of the linear base is a second screw quick-mounting positioning structure, one end of the linear base is provided with a mounting hole for mounting the second screw quick-mounting positioning structure, the second screw quick-mounting positioning structure further comprises a second support, one end of the second support is connected with the outer wall of a second positioning cylinder, the other end of the second support abuts against the inner top wall of the linear base, the skeleton of the second support is located on the top wall of the mounting hole, and the side wall of the second positioning cylinder is provided with a limiting groove, and the limiting groove is clamped with one end of the linear base.

[0018] Preferably, the bottom wall of the second support is provided with a protruding clamping column, the clamping column abuts against the inner side wall of the linear base, the second positioning cylinder is provided with a clamping block, the clamping block is protrudingly arranged along the radial direction of the second positioning cylinder, and the clamping block is provided with two groups of clamping blocks and is oppositely arranged, and the two groups of clamping blocks respectively abut against the inner side wall of the linear base.

[0019] The present application has the following beneficial effects:

[0020] By arranging the screw limiting point on the head and abutting against the inner wall by the transition part to form positioning constraint, the problem of effective screw rotation depth being occupied caused by the traditional clamping screw rod mode is solved, so that the threaded rod of the screw can be normally and long-rotated into the plate to achieve effective locking depth, and the installation stability of the hinge is improved, and meanwhile, the positioning cylinder is clamped with the head of the screw, the concentricity of the positioning cylinder and the screw can be ensured, the installation hole of the positioning cylinder and the hinge is positioned, and the installation precision of the screw can be ensured.

[0021] By cooperating the taper of the inner wall of the positioning cylinder gradually shrinking from top to bottom with the transition part of the screw to form abutting constraint in a natural state, the problem that the screw accidentally falls downward due to vibration or gravity in the process of transportation and carrying is avoided, the pre-assembly effect of the screw in a firm and stable state in a non-use state is realized, the risk of part loss is reduced, and the contact area of the installation cylinder and the screw is improved.

[0022] By arranging the elastic clamping jaw on the top wall of the positioning cylinder to limit the upward movement of the head of the screw, the screw is double-limited by clamping from above and abutting from below, the probability of screw pre-assembly failure is reduced, when the screw is rotated, the force downward of the screw can directly make the transition part support the inner wall of the positioning cylinder to be separated from clamping, the installation cylinder does not need to be crushed, the problem of cracking and crushing of the traditional quick-mounting support is solved, the installation process is ensured to be free of solid fragments, and the safety hazard of scratching personnel or falling into the locking area to affect the locking of the screw caused by splashing of the fragments is prevented.

[0023] The hinge installation utilizes a non-fragmented, elastic detachment mechanism using a positioning cylinder. After measuring the installation position, the slotted base is placed in the designated location. The installer presses down on the slotted base with one hand, allowing the exposed screw tip to pre-position with the insert plate. With the other hand, the installer uses a screwdriver to turn and press down on the screw, causing it to rotate and move along the positioning cylinder. As the screw delves deeper into the plate, it detaches from the positioning cylinder, preventing bracket fragments from flying into the locking area. Furthermore, the screw head positioning method effectively ensures the preset screw depth, guaranteeing hinge installation stability. Additionally, the positioning cylinder remains attached to the hinge body, reducing cleaning work and minimizing the risk of fragments getting stuck in internal hinge components, ensuring hinge opening and closing stability. Attached Figure Description

[0024] Figure 1 This is a perspective view of Embodiment 1 of this application;

[0025] Figure 2 This is a sectional perspective view of Embodiment 1 of this application;

[0026] Figure 3 This is a split perspective view of Embodiment 1 of this application;

[0027] Figure 4 This is a partial cross-sectional view of Embodiment 1 of this application;

[0028] Figure 5 This is a perspective view of Embodiment 2 of this application;

[0029] Figure 6 This is a cross-sectional view of Embodiment 2 of this application;

[0030] Figure 7 This is a partial front view of Embodiment 2 of this application;

[0031] Figure 8 This is a partial perspective view of Embodiment 2 of this application;

[0032] Figure 9 This is a partial sectional perspective view of Embodiment 2 of this application;

[0033] Figure 10 This is a schematic diagram of the screw installation state in Embodiment 2 of this application;

[0034] Figure 11 This is a perspective view of the first screw quick-release positioning structure in Embodiment 2 of this application;

[0035] Figure 12 This is a cross-sectional view of the first bracket in Embodiment 2 of this application;

[0036] Figure 13is a perspective view of the second screw quick-mounting positioning structure in Embodiment 2 of the present application;

[0037] Figure 14 is a sectional view of the second support in Embodiment 2 of the present application.

[0038] Legend: 1, screw; 101, head; 102, transition portion; 103, threaded rod; 2, positioning cylinder; 201, elastic jaw; 2011, inclined portion; 2012, guide portion; 202, positioning inclined surface; 203, groove; 204, cutout; 205, elastic groove; 206, avoidance inclined surface; 207, deformation groove; 3, linear base; 301, through hole; 302, clamping hole; 303, mounting hole; 4, hinged arm; 5, hinged cup; 6, rocker arm; 7, first support; 701, clamping claw; 702, extension portion; 8, second support; 801, clamping post; 802, clamping block; 803, limiting groove. DETAILED DESCRIPTION

[0039] This part will describe the specific embodiments of the present application in detail, and the preferred embodiments of the present application are shown in the drawings, which serve to supplement the description in the text part of the description and thus enable intuitive and visual understanding of each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0040] In the description of the present application, if the orientation description such as "upper", "lower", "front", "rear", "left", "right" and the like is referred to, the orientation or positional relationship shown based on the drawings is referred to, which is only for the convenience of describing the present application and simplifying the description, and it is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus it cannot be understood as a limitation on the present application. When a certain feature is referred to as being "provided", "fixed", "connected" to another feature, it can be directly provided, fixed or connected to the other feature, or indirectly provided, fixed or connected to the other feature.

[0041] In the description of the present application, if "several" is referred to, it means one or more, if "multiple" is referred to, it means two or more, and if "greater than", "less than", "exceeding" is referred to, it should be understood as not including the number itself, and if "and above", "and below", "and within" are referred to, it should be understood as including the number itself. If "first", "second" is referred to, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0042] Furthermore, unless otherwise defined, the technical and scientific terms used in this application have the same meanings as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and not for limiting the application. It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0043] Example 1: As Figures 1-4 As shown, a quick-release positioning structure for a screw 1 includes a screw 1 and a positioning cylinder 2. The screw 1 consists of a head 101, a transition portion 102, and a threaded rod 103 with a pointed bottom, arranged from top to bottom. The head 101 engages with the inner wall of the positioning cylinder 2. The top wall of the positioning cylinder 2 has a protruding elastic claw 201, and the inner side wall of the positioning cylinder 2 has a positioning inclined surface 202, which gradually narrows from top to bottom. When the screw 1 is assembled with the positioning cylinder 2, the elastic claw 201 is located above the top wall of the head 101 to prevent the screw 1 from detaching from the positioning cylinder 2 upwards. The transition portion 102 abuts against the positioning inclined surface 202 at the connection point with the head 101 to prevent the screw 1 from detaching from the positioning cylinder 2 downwards in a natural state without external force. When the head 101 is subjected to force, the screw 1 detaches from the positioning cylinder 2 downwards.

[0044] In order to ensure that after the transition part 102 and the head 101 abut against the inner wall of the positioning cylinder 2, the screw 1 can smoothly slide off the positioning cylinder 2 along the inner wall of the positioning cylinder 2 after being subjected to external force, the transition part 102 and the head 101 adopt an arc transition.

[0045] It is worth mentioning that the transition section 102 is formed by the head 101 gradually tilting and contracting towards the downward threaded rod 103.

[0046] The problem of the effective screw 1 rotation depth being occupied by the traditional clamping screw rod 103 is solved by setting the screw 1 limiting point on the head 101 and abutting the inner wall with the transition part 102 to form a positioning constraint, so that the threaded rod 103 of the screw 1 can normally rotate into the plate to achieve the effective locking depth, thereby improving the installation stability of the hinge. At the same time, the head 101 of the screw 1 is clamped by the positioning cylinder 2, which can ensure the concentricity of the positioning cylinder 2 and the screw 1, and the installation precision of the screw 1 can be ensured by installing and positioning the positioning cylinder 2 and the mounting hole 303 of the hinge. Secondly, the taper of the inner wall of the positioning cylinder 2 gradually shrinks from top to bottom, which cooperates with the transition part 102 of the screw 1 to form an abutting constraint in a natural state, thereby avoiding the problem of the screw 1 accidentally falling downward due to vibration or gravity during transportation and handling. The screw 1 is firmly and stably preassembled in a non-use state, which reduces the risk of part loss and improves the contact area between the installation cylinder and the screw 1. In addition, the elastic clamping jaw 201 is arranged on the top wall of the positioning cylinder 2 to limit the upward movement of the head 101 of the screw 1, and the screw 1 is double-limited by upper clamping and lower abutting, thereby reducing the probability of screw 1 preassembly failure. When the screw 1 is rotated, the transition part 102 can directly support the inner wall of the positioning cylinder 2 to separate the clamping, without the need to crush the installation cylinder, thereby solving the problem of cracking and fragmentation of the traditional quick-mounting support during crushing, ensuring that no solid fragments are generated during the installation process, and preventing the safety hazard of scratching personnel or falling into the locking area to affect the locking of the screw 1 caused by the splashing of fragments.

[0047] In order to improve the contact area between the head 101 of the screw 1 and the positioning cylinder 2, thereby improving the friction between the screw 1 and the positioning cylinder 2, preventing the screw 1 from accidentally slipping, the diameter of the top wall of the head 101 is A, the axis length of the head 101 is H, H:A = 1:2.3-2.7, preferably H:A = 1:2.5. By increasing the axis length of the head 101 of the screw 1, i.e. the thickness of the head 101 of the screw 1, and the head 101 of the screw 1 is located in the positioning cylinder 2, thereby increasing the contact area between the side wall of the head 101 of the screw 1 and the tapered inner wall of the positioning cylinder 2, reducing the risk of accidental slipping of the screw 1 during transportation vibration, preventing part loss and installation abnormalities caused by preassembly failure; secondly, the head 101 of the screw 1 is more protruding, when the installation personnel use the installation tool to act on the head 101 of the screw 1, the screw 1 has enough slipping distance when slipping in the inner wall of the installation cylinder, so that the screw 1 slips out of the installation cylinder more smoothly and linearly, and the thickened head 101 of the screw 1 is more conducive to bearing the force of the installation tool.

[0048] It is worth mentioning that the transition part 102 and the threaded rod 103 of the screw 1 in the present application are the same as the existing self-tapping screw 1, the difference lies in that the head 101 of the screw 1 is thickened and the outer wall thereof is designed.

[0049] In the specific structure of the gradually shrinking of the inner wall of the positioning cylinder 2 from top to bottom, the included angle a is formed between the positioning slope 202 and the axis of the positioning cylinder 2, the included angle a is 2.7°±0.3°, the outer side wall of the head 101 is gradually shrinking from top to bottom to the transition part 102, and is matched with the included angle a, it should be noted that the included angle b is formed between the outer side wall of the head 101 and the axis of the screw 1, the included angle b=2.75°±0.3°, by limiting the inclined shrinkage angle of the positioning cylinder 2, it ensures that the transition part 102 of the screw 1 is in stable contact with the conical inner wall in the natural state of the screw 1, reduces the probability of the screw 1 slipping downward due to gravity or vibration, prevents the risk of accidental separation of parts during transportation and installation preparation, at the same time, the outer side wall of the head 101 of the screw 1 adopts the same inclined angle structure design, on the one hand, it can ensure that the contact area between the head 101 of the screw 1 and the inner wall of the positioning cylinder 2 when the screw 1 is assembled with the positioning cylinder 2, on the other hand, under the action of the installation tool, it can play a role of gradually opening the inner wall of the positioning cylinder 2, so that the screw 1 slides out of the inner wall of the positioning cylinder 2 more smoothly; secondly, through the cooperation of the inner wall slope of the positioning cylinder 2 and the head 101 slope of the screw 1, it ensures that the axis of the screw 1 is always consistent with the axis of the positioning cylinder 2, reduces the radial deviation of the screw 1 during pre-assembly and initial rotation, and prevents the installation precision from being reduced or the thread from being damaged due to the inclination of the screw 1.

[0050] In the specific structural design of the elastic clamping jaw 201, the positioning cylinder 2 is provided with at least two groups of elastic clamping jaws 201. In this embodiment, the elastic clamping jaw 201 is provided with two groups, and the two groups of elastic clamping jaws 201 are oppositely arranged. The positioning cylinder 2 is provided with a cutting groove 204 and an elastic groove 205. The cutting groove 204 is recessed from the inner side wall of the positioning cylinder 2 towards the elastic clamping jaw 201. The elastic groove 205 is arranged on both sides of the elastic clamping jaw 201 and is recessed downward from the top wall of the positioning cylinder 2. The elastic clamping jaw 201 is provided with a bevel portion 2011 and a guide portion 2012. The bevel portion 2011 is inclined from top to bottom and is arranged in an arc shape. The bevel portion 2011 is used to abut the transition portion 102 of the screw 1 when the screw 1 is preassembled with the positioning cylinder 2, so as to separate the two groups of oppositely arranged elastic clamping jaws 201 and enable the screw 1 to be loaded into the positioning cylinder 2. The distance between the bottom end of the bevel portion 2011 of one group of elastic clamping jaws 201 and the bottom end of the bevel portion 2011 of the other group of elastic clamping jaws 201 is L, and L < A. The guide portion 2012 is inclined downward from the bottom of the bevel portion 2011. When the screw 1 is preassembled with the positioning cylinder 2, the screw head 101 contacts the bevel portion 2011 in the initial loading stage, and the arc-shaped surface realizes smooth guidance of the gradual flexible expansion. In combination with the inclination design of the outer side wall of the screw head 101, the risk of plastic deformation or fracture of the clamping jaw is reduced, the installation resistance is prevented from increasing sharply, and the preassembly failure is prevented. When the screw head 101 slides into the bevel portion 2011 and enters the guide portion 2012, the bidirectional symmetrical force of the guide portion 2012 ensures that the axis of the screw 1 coincides with the axis of the positioning cylinder 2. Since L < A, the elastic clamping jaw 201 can clamp the top wall of the screw 1 after the screw 1 is loaded, thereby preventing the screw 1 from falling off. In addition, the stress release cutting groove 204 prolongs the deformation path of the guide portion 2012, solves the problem of fatigue fracture caused by stress concentration at the root of the clamping jaw during repeated deformation of the clamping jaw, enables the elastic clamping jaw 201 to have uniform stress distribution during elastic deformation from expansion to rebound, reduces the fatigue damage of the clamping jaw structure, and simultaneously, the design of the cutting groove 204 enables the elastic clamping jaw 201 to contact the screw head 101 on the transverse inner wall of the positioning cylinder 2, ensures that the elastic clamping jaw 201 can normally elastically deform, and ensures the smoothness of the assembly of the screw 1 and the positioning cylinder 2.

[0051] In order to improve the elasticity of the positioning cylinder 2, so that the screw 1 can smoothly slide off the positioning cylinder 2 under the action of the screw 1 knife of the installer, the positioning cylinder 2 is made of elastic material, such as plastic, the head 101 is interference fit with the positioning slope 202, the ratio between the diameter of the top wall of the screw 1 head 101 and the diameter of the top wall of the positioning slope 202 of the positioning cylinder 2 is 1:1.01, through the setting of the double-side inclination angle of 5.5°, the bottom wall of the screw 1 head 101 is also interference fit with the bottom wall of the positioning slope 202 of the positioning cylinder 2, through the design of small interference amount, it is helpful for the screw 1 to slide off the positioning cylinder 2 without crushing or crushing the positioning cylinder 2, the outer ring wall of the positioning cylinder 2 is provided with a plurality of groups of grooves 203, the grooves 203 are recessed from the outside towards the positioning cylinder 2, when the grooves 203 are provided with multiple groups, the grooves 203 are arranged along the outer ring wall of the positioning cylinder 2, the grooves 203 play a role in ensuring that the positioning cylinder 2 has elastic effect, the grooves 203 are arranged at intervals to ensure the structural rigidity of the positioning cylinder 2, the recess depth of the grooves 203 is 38% to 45% of the wall thickness of the positioning cylinder 2, preferably 40%, through the formation of multiple groups of grooves 203 arranged at intervals on the outer ring wall, when the screw 1 is stressed on the corresponding inner wall of the grooves 203, the local thin-walled structure greatly improves the elastic deformation capacity, the non-groove 203 area maintains the double-effect balance of structural strength, reduces the risk of overall deformation instability of the positioning cylinder 2, and prevents the screw 1 from affecting the installation concentricity during the disengagement process. The positioning cylinder 2 is twisted and inclined, secondly, through the double progressive constraints formed by the double-side inclination angle of 5.5° and the 1.01 times interference ratio at the bottom wall of the screw 1 head 101, the problem of sudden change in resistance when disengaging at a single contact point is solved, the initial disengagement of the head 101 contact cone surface to the end of the transition part 102 disengagement is obtained. Linearly increasing damping feedback, reducing the discomfort caused by disengagement resistance fluctuations, preventing the screw 1 knife from slipping or hinge displacement due to sudden resistance, and thirdly, through the formation of axial continuous elastic support points by the interval distribution of the grooves 203, the screw 1 is sequentially contracted along the groove 203 site during the descending process, avoiding the risk of crushing the positioning cylinder 2.

[0052] Furthermore, to ensure that the screw head 101 can smoothly detach from the positioning cylinder 2 after sliding off the positioning inclined surface 202, the positioning cylinder 2 is structurally designed with an avoidance inclined surface 206 and several sets of deformation grooves 207. The avoidance part gradually contracts upwards from the bottom wall of the positioning cylinder 2. A positioning ring is formed at the intersection of the positioning inclined surface 202 and the avoidance inclined surface 206. The deformation grooves 207 are recessed upwards from the bottom wall of the positioning cylinder 2, and part of the deformation grooves 207 are located within the positioning inclined surface 202. When multiple sets of deformation grooves 207 are provided, two sets of deformation grooves 207 are arranged opposite each other and perpendicular to the elastic claw 201. During installation, the installation tool rotates the screw 1, and the screw 1... The screw part gradually enters the mounting plate, causing the screw 1 to move downward along the axis of the positioning cylinder 2. Through the thickened head 101 structure design of the screw 1, it is ensured that the screw 1 will disengage from the positioning cylinder 2 after being screwed into the mounting plate to a certain depth, thereby ensuring the screw 1 screwing-in installation accuracy. Through the design of the avoidance slope 206, the screw 1 head 101 slides away from the positioning slope 202, reducing the limiting and positioning effect of the positioning cylinder 2 on the screw 1, effectively reducing the screw 1 tightening installation resistance. Secondly, by setting the deformation groove 207, when the screw head 101 can squeeze the avoidance slope 206, it can effectively open the avoidance slope 206, allowing the screw 1 to slide away from the positioning cylinder 2 normally.

[0053] It is worth mentioning that, in order to avoid stress concentration after the groove is opened in the positioning cylinder 2, an arc-shaped transition surface can be set at the intersection of the groove and the inner wall to mitigate the risk of stress concentration.

[0054] Example 2: As Figures 1-14 As shown, a quick-release hinge includes a screw 1 quick-release positioning structure as described in Embodiment 1, and also includes a slotted base 3, a hinge arm 4, a hinge cup 5, and a rocker arm 6. The hinge arm 4 is installed on the outer top wall of the slotted base 3. One side of the hinge arm 4 is assembled with the hinge cup 5 via the rocker arm 6. The top walls of one end and the other end of the slotted base 3 are provided with screw 1 quick-release positioning structures. The positioning cylinder 2 is connected to the slotted base 3. The slotted base 3 has a through hole 301 corresponding to the screw 1. The thread is located directly above the through hole 301, and part of the threaded rod 103 is exposed on the bottom wall of the slotted base 3. The distance between the exposed threaded rod 103 of the screw 1 and the slotted base 3 is 1mm. When the hinge is installed on the plate, the screw 1 slips out of the positioning cylinder 2, and the positioning cylinder 2 is connected to the hinge.

[0055] When the hinge is installed, the installer presses the hinge's one-end base 3 with one hand, and the exposed screw 1 tip can be pre-positioned with the inserted plate. The installer's other hand turns the screw 1 with a screwdriver 1, and the screw 1 is rotated and pressed down, so that the screw 1 is rotated and moved along the positioning cylinder 2. As the screw 1 is screwed into the plate, the screw 1 is separated from the positioning cylinder 2, and the positioning cylinder 2 is elastically separated without fragmentation, so that the screw 1 slides out of the positioning cylinder 2, solving the problem of the bracket fragments falling into the locking area. At the same time, the screw 1 head 101 is positioned, effectively ensuring the preset screwing depth of the screw 1 and the installation stability of the hinge. In addition, the positioning cylinder 2 remains in the hinge body and does not fall off, reducing the workload of cleaning the positioning cylinder 2.

[0056] In terms of the specific structure of the screw 1 quick installation positioning structure and the one-end base 3, the screw 1 quick installation positioning structure installed on the top wall of the one-end base 3 is a first screw 1 quick installation positioning structure. The first screw 1 quick installation positioning structure includes a first screw 1 and a second positioning cylinder 2. The first screw 1 quick installation positioning structure also includes a first bracket 7 and a clamping claw 701. The first bracket 7 is cylindrical, and the first positioning cylinder 2 is connected above the first bracket 7. The elastic groove 205 extends to the bottom wall of the first bracket 7. The side wall of the one-end base 3 is provided with a clamping hole 302. The clamping claw 701 is L-shaped, and one end of the clamping claw 701 is connected to the outer wall of the first bracket 7. The other end of the clamping claw 701 is provided with a clamping protrusion, which is clamped in the clamping hole 302. The bottom wall of the first bracket 7 is provided with an extension 702, which is located between the opposite two side walls of the one-end base 3. The extension 702 abuts against the inner side wall of the one-end base 3, limiting the first bracket 7 and improving the contact area between the first bracket 7 and the one-end base 3, which helps to ensure the stability of the first bracket 7 during screwing. The first screw 1 quick installation positioning structure is installed and connected with the one-end base 3 through the extension 702 and the clamping claw 701, which ensures the stability of the first screw 1 during rotation and effectively prevents the first bracket 7 from falling off the one-end base 3 after the first screw 1 is screwed in.

[0057] In the specific structure of the screw 1 quick-mounting positioning structure and the other end top wall of the one-end base 3, the screw 1 quick-mounting positioning structure mounted on the top wall of the one-end base 3 is a second screw 1 quick-mounting positioning structure, the second screw 1 quick-mounting positioning structure comprises a second screw 1 and a second positioning cylinder 2, one end of the one-end base 3 is provided with a mounting hole 303 for mounting the second screw 1 quick-mounting positioning structure, the second screw 1 quick-mounting positioning structure further comprises a second support 8, one end of the second support 8 is connected with the outer wall of the second positioning cylinder 2, the other end of the second support 8 abuts against the inner top wall of the one-end base 3, the skeleton of the second support 8 is located on the top wall of the mounting hole 303, the side wall of the second positioning cylinder 2 is provided with a limiting groove 803, the limiting groove 803 is clamped with one end of the one-end base 3, the second support 8 is provided with two groups, and the second support 8 is symmetrically arranged, the hinge arm 4 is provided with a through hole for screwing the second screw 1, through the limiting structure that one end of the second support 8 connects the positioning cylinder 2 and the other end abuts against the inner top wall of the base, the problem of limited space of the second screw 1 quick-mounting positioning structure is solved, through the second support 8 extending horizontally, the contact surface of the second support 8 and the one-end base 3 is improved, secondly, through the longitudinal engagement design of the limiting groove 803 and the top wall of the base, the problem that the second support 8 is overturned by the action force of the screw 1 when the screw 1 is screwed in is solved, the problem that the screw 1 is screwed in and the second support 8 shakes to cause the thread to be misaligned is prevented, and the screw is prevented from being inclined and screwed into the board.

[0058] In order to ensure the installation stability of the second support 8 to the second positioning cylinder 2, the bottom wall of the second support 8 is provided with a protruding clamping column 801, the clamping column 801 abuts against the inner side wall of the one-end base 3, the second positioning cylinder 2 is provided with a clamping block 802, the clamping block 802 is protrudingly arranged along the radial direction of the second positioning cylinder 2, the clamping block 802 is provided with two groups and is oppositely arranged, the two groups of clamping blocks 802 respectively abut against the inner side wall of the one-end base 3, through the abutment of the clamping column 801 and the inner side wall of the base and the bilateral radial limitation of the clamping block 802, the problem of combined displacement of the axial movement and the radial swing of the second support 8 when the screw 1 is screwed in is solved, the vibration displacement amplitude of the second support 8 is reduced, and the screwing precision of the second screw 1 is effectively ensured.

[0059] It should be noted that, Figure 12 and Figure 14 In (a) and (b), the views are respectively different sectional views.

[0060] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements shall be encompassed within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A screw quick-release positioning structure, characterized in that: The device includes a screw and a positioning cylinder. The screw, from top to bottom, consists of a head, a transition section, and a threaded rod. The head engages with the inner wall of the positioning cylinder. The top wall of the positioning cylinder has a protruding elastic claw. The inner side wall of the positioning cylinder has a positioning slope that gradually narrows from top to bottom. When the screw is assembled with the positioning cylinder, the elastic claw is located above the top wall of the head. The transition section, where it connects to the head, abuts against the positioning slope. When the head is compressed, the screw disengages downwards from the positioning cylinder.

2. The screw quick-release positioning structure according to claim 1, characterized in that: The diameter of the top wall of the head is A, and the length of the axis of the head is H, where H:A = 1:2.3~2.

7.

3. The screw quick-release positioning structure according to claim 1, characterized in that: The positioning inclined surface forms an angle α with the axis of the positioning cylinder, and the angle α is 2.7°±0.3°. The outer side wall of the head gradually tapers from top to the transition part and is adapted to the angle α.

4. The screw quick-release positioning structure according to claim 1, characterized in that: The positioning cylinder is provided with at least two sets of elastic claws, which are arranged opposite to each other. The positioning cylinder is provided with a groove and an elastic groove. The groove is recessed from the inner wall of the positioning cylinder toward the elastic claw. The elastic groove is provided on both sides of the elastic claw and is recessed from the top wall of the positioning cylinder downward. The elastic claw is provided with a beveled part and a guide part. The beveled part is inclined from top to bottom, and the guide part is inclined from the bottom of the beveled part downward.

5. The screw quick-release positioning structure according to claim 1, characterized in that: The positioning cylinder is made of elastic material, and the head is interference-fitted with the positioning inclined surface. The outer ring wall of the positioning cylinder is provided with several sets of grooves, which are recessed from the outside toward the positioning cylinder. When there are multiple sets of grooves, the grooves are spaced apart along the outer ring wall of the positioning cylinder.

6. A screw quick-release positioning structure according to any one of claims 1 to 5, characterized in that: The positioning cylinder is provided with an avoidance slope and several sets of deformation grooves. The avoidance part gradually shrinks upward from the bottom wall of the positioning cylinder. The positioning slope and the avoidance slope intersect to form a positioning ring. The deformation groove is recessed upward from the bottom wall of the positioning cylinder. The deformation groove is partially located in the positioning slope. When there are multiple sets of deformation grooves, two sets of deformation grooves are arranged opposite each other and perpendicular to the elastic claw.

7. A quick-release hinge, characterized in that: The screw quick-release positioning structure according to any one of claims 1 to 6 further includes a slotted base, a hinge arm, a hinge cup, and a rocker arm. The hinge arm is mounted on the outer top wall of the slotted base. One side of the hinge arm is assembled with the hinge cup via the rocker arm. A screw quick-release positioning structure is provided on the top wall of one end and the other end of the slotted base. The positioning cylinder is connected to the slotted base. The slotted base has a through hole corresponding to the screw. The thread is located directly above the through hole, and the threaded part is exposed on the bottom wall of the slotted base. When the hinge is installed with the plate, the screw slips out of the positioning cylinder, and the positioning cylinder is connected to the hinge.

8. A quick-release hinge according to claim 7, characterized in that: The screw quick-release positioning structure installed on the top wall of the slotted base is a first screw quick-release positioning structure. The first screw quick-release positioning structure also includes a first bracket and a locking claw. The first bracket is cylindrical, and a first positioning cylinder is connected above the first bracket. The side wall of the slotted base has a locking hole. The locking claw is L-shaped, and one end of the locking claw is connected to the outer wall of the first bracket. The other end of the locking claw has a locking protrusion, which is locked in the locking hole. The bottom wall of the first bracket has an extension, which is located in the opposite side walls of the slotted base.

9. A quick-release hinge according to claim 7, characterized in that: The screw quick-release positioning structure installed on the top wall of the slotted base is a second screw quick-release positioning structure. One end of the slotted base has a mounting hole for installing the second screw quick-release positioning structure. The second screw quick-release positioning structure also includes a second bracket. One end of the second bracket is connected to the outer wall of the second positioning cylinder, and the other end of the second bracket abuts against the inner top wall of the slotted base. The frame of the second bracket is located on the top wall of the mounting hole. A limit groove is provided on the side wall of the second positioning cylinder, and the limit groove is engaged with one end of the slotted base.

10. A quick-release hinge according to claim 9, characterized in that: The bottom wall of the second bracket has a protruding locking post, which abuts against the inner side wall of the straight base. The second positioning cylinder is provided with a locking block, which is arranged along the radial protrusion of the second positioning cylinder. There are two sets of locking blocks arranged opposite each other, and the two sets of locking blocks abut against the inner side wall of the straight base respectively.

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