Self-locking ratchet angle adjustment hinge

Abstract

The utility model belongs to angle adjusting hinge technical field especially a kind of self-locking ratchet angle adjusting hinge, including support seat and the adjusting seat of rotation connection with support seat, the upper surface of support seat is provided with self-locking mechanism, the self-locking mechanism includes spring and ball rod, the spring is driven by its elastic deformation and resets ball rod, by setting fixed mechanism, positioning and fixing are carried out to support seat, user when installing adjusting hinge, first, it is initially fixed on target object by back glue, the adhesion of back glue can fill up the tiny gap between support seat, adjusting seat and target object, then further fixed using bolt, form double fixed mechanism, the initial fixation of back glue can reduce installation difficulty and time, and its adhesive layer can absorb vibration and impact force, reduce the dynamic load that bolt bears, prolong the service life of overall structure.

Description

Technical Field

[0001] This utility model relates to the field of angle adjustment hinge technology, and in particular to a self-locking ratchet-type angle adjustment hinge. Background Technology

[0002] Angle-adjustable hinges are hinges that can adjust the angle and have a stable locking function. They are widely used in scenarios that require multi-angle fixation and flexible adjustment, such as furniture, industrial equipment and automotive parts. Users can adjust the angle according to actual needs and achieve stable fixation after adjustment, avoiding angle displacement caused by external forces or vibrations.

[0003] In the existing technology, the angle adjustment hinge needs to be manually locked after adjustment, which relies entirely on human operation, increasing the operation steps. Moreover, it is only fixed by bolts. During long-term use, the bolts are prone to loosening due to vibration or external force, thus affecting the stability of the hinge. Therefore, a self-locking ratchet-type angle adjustment hinge is proposed to solve the above-mentioned problems. Utility Model Content

[0004] To address the technical problems in existing technologies where angle adjustment hinges require manual locking after adjustment, relying entirely on human operation and increasing operational steps, and where bolts are prone to loosening due to vibration or external forces during long-term use, this application provides a self-locking ratchet-type angle adjustment hinge.

[0005] This utility model proposes a self-locking ratchet-type angle adjustment hinge, which includes a support base and an adjustment base rotatably connected to the support base. The upper surface of the support base is provided with a self-locking mechanism, which includes a spring and a ball rod. The spring drives the ball rod to return to its original position through its elastic deformation.

[0006] The lower surface of the support base is provided with a fixing mechanism, which includes an adhesive backing. The adhesive backing is used to position and fix the support base through an adhesive action.

[0007] Preferably, the self-locking mechanism further includes a ratchet, which is fixedly installed on the inner side wall of the adjusting seat.

[0008] Preferably, the cue stick is slidably connected to the inner wall of the groove of the support seat, and a pawl is fixedly installed on the right side surface of the cue stick support, the pawl engaging with the ratchet.

[0009] Preferably, the spring is fixedly installed on the sliding inner wall of the support base, and one end of the spring is fixedly installed on the left side surface of the cue stick.

[0010] Preferably, the fixing mechanism further includes bolt holes, which are formed on the outer surfaces of the support base, the adjusting base, and the adhesive backing.

[0011] Preferably, the two adhesive backings are respectively fixedly bonded to the lower surface of the support base and the upper surface of the adjustment base.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By setting a self-locking mechanism, the ball bar is reset. When the user adjusts the angle by rotating the adjustment seat, the ratchet rotates synchronously. When the ratchet teeth pass the pawl, the spring can quickly push the ball bar to the right to reset, so that the pawl on the right side re-engages into the next tooth groove of the ratchet, achieving continuous locking. This ensures that the pawl and ratchet always maintain a tight engagement. When unlocking is required, the user only needs to pull the ball bar to the left to release the engagement between the pawl and ratchet. This solves the technical problem in the existing technology where the angle adjustment hinge needs to be manually locked after adjustment, which relies entirely on human operation and increases the number of operation steps.

[0014] 2. By setting up a fixing mechanism, the support base is positioned and fixed. When installing the adjusting hinge, the user first uses the adhesive backing to initially fix it to the target object. The adhesive backing can fill the small gaps between the support base, adjusting base and target object. Then, bolts are used for further fixing, forming a double fixing mechanism. The initial fixing with adhesive backing can reduce the difficulty and time of installation, and its adhesive layer can absorb vibration and impact, reduce the dynamic load on the bolts, and extend the service life of the overall structure. This solves the technical problem in the existing technology that relies solely on bolt fixing, which can easily cause the bolts to loosen due to vibration or external force during long-term use, thus affecting the stability of the hinge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a self-locking ratchet-type angle adjustment hinge proposed in this utility model;

[0016] Figure 2 This is a perspective view of the bolt hole structure of a self-locking ratchet-type angle adjusting hinge proposed in this utility model;

[0017] Figure 3 This is a perspective view of a ratchet structure for a self-locking ratchet-type angle adjustment hinge proposed in this utility model;

[0018] Figure 4 This is a perspective view of the pawl structure of a self-locking ratchet-type angle-adjusting hinge proposed in this utility model;

[0019] Figure 5 This is a perspective view of the spring structure of a self-locking ratchet-type angle adjustment hinge proposed in this utility model.

[0020] In the diagram: 1. Support seat; 11. Adjustment seat; 2. Ratchet; 3. Cue stick; 31. Pawl; 4. Spring; 5. Bolt hole; 51. Adhesive backing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-5 A self-locking ratchet-type angle adjustment hinge includes a support base 1 and an adjustment base 11 rotatably connected to the support base 1. The upper surface of the support base 1 is provided with a self-locking mechanism, which includes a spring 4 and a ball rod 3. The spring 4 drives the ball rod 3 to reset through its elastic deformation.

[0023] To improve adjustment efficiency, the self-locking mechanism also includes a ratchet 2, which is fixedly installed on the inner wall of the adjustment seat 11. The ratchet 2 is fixedly installed to the adjustment seat 11, and when the user adjusts the angle by rotating the adjustment seat 11, the ratchet 2 rotates synchronously with it. The density of the ratchet 2 teeth can be set according to actual needs. If precise angle adjustment is required, the tooth density can be increased; conversely, it can be appropriately dispersed to improve adjustment efficiency. Both the adjustment seat 11 and the support seat 1 can be made of aluminum alloy, and the surface can be oxidized or sprayed to enhance aesthetics and durability. The ratchet 2 can be made of chrome vanadium steel, which, after heat treatment, has high strength, wear resistance, and toughness, and can withstand frequent mechanical stress.

[0024] To achieve one-way locking, the ball stick 3 is slidably connected to the inner wall of the groove of the support seat 1. A pawl 31 is fixedly installed on the right side surface of the ball stick 3. The pawl 31 engages with the ratchet 2. The ball stick 3 is slidably connected to the support seat 1, which fixes it without affecting its movement. The ball stick 3 is fixedly installed with the pawl 31, and the pawl 31 engages with the ratchet 2 to achieve one-way locking, preventing the adjusting seat 11 from rotating under external force. Since the pawl 31 is fixed and limited by the ball stick 3, the rotation of the ratchet 2 drives the ball stick 3 to move in the groove of the support seat 1 through the pawl 31. The meshing accuracy of the ratchet 2 and the pawl 31 can be controlled by precision machining during the manufacturing process to ensure stable locking effect and smooth adjustment. The pawl 31 and the ball stick 3 are both made of chrome vanadium steel, which has high strength, excellent wear resistance and toughness. After heat treatment, the hardness can reach more than 60HRC, which can withstand frequent mechanical stress and significantly extend service life.

[0025] To disengage the pawl 31 from the ratchet 2, a spring 4 is fixedly installed on the sliding inner wall of the support seat 1. One end of the spring 4 is fixedly installed on the left side surface of the support rod of the ball stick 3. By fixing the spring 4 to both the support seat 1 and the ball stick 3, the spring 4 ensures that its force acts stably on the ball stick 3, pushing it to reset. During the rotation of the adjusting seat 11, when the ratchet 2 tooth passes the pawl 31, the spring 4 can quickly push the ball stick 3 to the right to reset, causing the right pawl 31 to re-engage with the next tooth groove of the ratchet 2, achieving continuous locking. This ensures that the pawl 31 and the ratchet 2 always maintain a tight engagement, effectively preventing the adjusting seat 11 from loosening due to vibration or external force, and allowing the user to achieve continuous locking without manual intervention. To enhance ease of use, when unlocking is required, the user simply pulls the lever 3 to the left to disengage the pawl 31 from the ratchet 2. The ratchet 2 features an involute tooth groove to ensure that the pawl 31 can smoothly slide into the groove during reset, preventing jamming due to improper groove angle. The engagement end of the pawl 31 is chamfered or rounded to reduce contact resistance with the ratchet 2 groove and improve engagement smoothness. The spring 4 can be made of silicon manganese steel, which has a high elastic limit, high yield strength, and good fatigue performance. It is suitable for high-load, high-frequency mechanical structures, can withstand frequent extension and retraction movements, and can maintain stable elastic force even after long-term use, ensuring the reliability of the self-locking mechanism.

[0026] By setting a self-locking mechanism, the ball handle 3 is reset. When the user adjusts the angle by rotating the adjustment seat 11, the ratchet 2 rotates synchronously with it. When the ratchet 2 teeth pass the pawl 31, the spring 4 can quickly push the ball handle 3 to the right to reset, so that the right pawl 31 re-engages into the next tooth groove of the ratchet 2, achieving continuous locking. This ensures that the pawl 31 and the ratchet 2 always maintain a tight engagement. When unlocking is required, the user only needs to pull the ball handle 3 to the left to release the engagement between the pawl 31 and the ratchet 2. This solves the technical problem in the prior art where the angle adjustment hinge needs to be manually locked after adjustment, which relies entirely on human operation and increases the number of operation steps.

[0027] In order to position and fix the support base 1, a fixing mechanism is provided on the lower surface of the support base 1. The fixing mechanism includes an adhesive backing 51, which positions and fixes the support base 1 through an adhesive action.

[0028] To achieve unified fixation of the multi-layer structure, the fixing mechanism also includes bolt holes 5. Bolt holes 5 are opened on the outer surfaces of the support base 1, the adjusting base 11, and the adhesive backing 51. By opening bolt holes 5 on the support base 1, the adjusting base 11, and the adhesive backing 51, the support base 1 and the adjusting base 11 are fixed to the target object by bolts. The through design of bolt holes 5 ensures that the bolts can pass through the support base 1, the adjusting base 11, and the adhesive backing 51 at the same time, so as to achieve unified fixation of the multi-layer structure.

[0029] To reduce installation difficulty and time, two adhesive backings 51 are fixedly bonded to the lower surface of the support base 1 and the upper surface of the adjusting base 11, respectively. With adhesive backings 51 bonded to the support base 1 and the adjusting base 11, the user first uses the adhesive backings 51 to initially fix the adjusting hinge to the target object. The adhesive backings 51 can fill the small gaps between the support base 1, the adjusting base 11 and the target object, improving the fit of the contact surfaces. Then, bolts are used for further fixing, forming a double fixing mechanism. The initial fixing with adhesive backings 51 makes installation more convenient. The user does not need to manually align the bolt holes 5 during installation, reducing installation difficulty and time. Moreover, the adhesive layer of adhesive backings 51 can absorb vibration and impact, reduce the dynamic load on the bolts, and extend the service life of the overall structure. The material can be acrylic foam adhesive, which has strong adhesion, good weather resistance, and vibration resistance, making it suitable for long-term use and not easy to age and fall off.

[0030] By setting up a fixing mechanism, the support base 1 is positioned and fixed. When installing the adjusting hinge, the user first uses the adhesive 51 to initially fix it to the target object. The adhesive 51 can fill the small gaps between the support base 1, the adjusting base 11 and the target object. Then, bolts are used for further fixing, forming a double fixing mechanism. The initial fixing of the adhesive 51 can reduce the difficulty and time of installation, and its adhesive layer can absorb vibration and impact, reduce the dynamic load on the bolts, and extend the service life of the overall structure. This solves the technical problem in the prior art that, when installation is fixed by bolts alone, the bolts are prone to loosening due to vibration or external force during long-term use, thus affecting the stability of the hinge.

[0031] Working principle: When installing the angle adjustment hinge, the user first attaches the two adhesive backings 51 to the lower surface of the support base 1 and the upper surface of the adjustment base 11 respectively. Then, the user aligns the support base 1 and the adjustment base 11 with the installation position of the target object and presses gently to make the adhesive backings 51 adhere tightly to the surface of the target object. Let it stand for 5-10 minutes to allow the adhesive backings 51 to cure initially and ensure initial positioning stability. Then, the bolts are passed through the bolt holes 5 on the support base 1, the adjustment base 11 and the adhesive backings 51 in sequence. The bolts are tightened with a screwdriver or wrench to ensure that the support base 1 and the adjustment base 11 are firmly fixed to the target object. Finally, the user checks the tightness of each bolt to avoid loosening.

[0032] When the angle needs to be adjusted, rotate the adjustment seat 11 to the desired angle, and the ratchet 2 will rotate synchronously. The pawl 31 on the cue stick 3 will be engaged in the tooth groove of the ratchet 2 under the action of the spring 4 to achieve one-way locking. During the adjustment process, the user does not need to manually intervene. The pawl 31 will automatically reset and engage, ensuring that the adjustment seat 11 will not rotate due to external force or vibration.

[0033] When it is necessary to unlock, pull the cue stick 3 to the left to disengage the pawl 31 from the tooth groove of the ratchet 2. After unlocking, the adjusting seat 11 can be freely rotated to a new angle to release the cue stick 3. The spring 4 quickly pushes the cue stick 3 to reset, and the pawl 31 re-engages into the next tooth groove of the ratchet 2 to achieve relocking. Note that you should avoid pulling the cue stick 3 with excessive force to avoid damaging the spring 4 or the structure of the cue stick 3.

[0034] If the adjustment is not smooth, check if there are foreign objects or dirt in the slide, check if the cue stick 3 is deformed or stuck, and check if the spring 4 is malfunctioning or has insufficient elasticity. If the locking fails, check if the spring 4 is fatigued or broken, check if the pawl 31 is worn or deformed, and check if the tooth groove of the ratchet 2 is damaged or has dust accumulation. If the adhesive 51 falls off, check if the adhesive 51 is aged or has reduced adhesion, and check if the installation surface is clean, flat, and free of oil or dust.

[0035] Clean the slide and ratchet 2 pawl 31 regularly to ensure no foreign matter accumulates. Apply a small amount of grease, such as lithium-based grease, to reduce friction and improve smoothness of adjustment. Regularly check the tightness of the bolts to prevent loosening due to vibration. Regularly check the adhesion of the adhesive 51 and replace it with a new adhesive 51 if necessary.

[0036] When performing partial repairs and replacing spring 4, disassemble the cue stick 3, remove the faulty spring 4, and replace it with a silicon manganese steel spring 4 of the same specification; when replacing pawl 31, if pawl 31 is worn, disassemble the cue stick 3 and replace it with a new pawl 31; when replacing adhesive 51, remove the residual adhesive layer, clean the surface, and re-attach new acrylic foam adhesive. The connection and installation described in this article can be achieved by bolts or flanges.

[0037] In batch maintenance or rapid replacement scenarios, to avoid the complexity of repairing individual components, the entire adjusting hinge can be replaced directly. The overall replacement steps are as follows: unscrew the bolts, remove the support 1 and adjusting seat 11 from the target object, clean the mounting surface to ensure there is no residual adhesive or dirt, and install the new adjusting hinge to avoid a decrease in accuracy due to partial repair.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-locking ratchet-type angle adjusting hinge, comprising a support base (1) and an adjusting base (11) rotatably connected to the support base (1), characterized in that: The upper surface of the support base (1) is provided with a self-locking mechanism, which includes a spring (4) and a ball rod (3). The spring (4) drives the ball rod (3) to reset through its elastic deformation. The lower surface of the support base (1) is provided with a fixing mechanism, which includes an adhesive backing (51) for positioning and fixing the support base (1) through an adhesive action.

2. The self-locking ratchet-type angle adjustment hinge according to claim 1, characterized in that: The self-locking mechanism also includes a ratchet (2), which is fixedly installed on the inner side wall of the adjusting seat (11).

3. The self-locking ratchet-type angle adjusting hinge according to claim 2, characterized in that: The cue stick (3) is slidably connected to the inner wall of the groove of the support seat (1). A pawl (31) is fixedly installed on the right side surface of the cue stick (3), and the pawl (31) engages with the ratchet (2).

4. The self-locking ratchet-type angle adjustment hinge according to claim 3, characterized in that: The spring (4) is fixedly installed on the sliding inner wall of the support base (1), and one end of the spring (4) is fixedly installed on the left side surface of the support rod of the cue stick (3).

5. A self-locking ratchet-type angle adjusting hinge according to claim 4, characterized in that: The fixing mechanism also includes bolt holes (5), which are formed on the outer surfaces of the support base (1), the adjusting base (11) and the adhesive backing (51).

6. A self-locking ratchet-type angle adjusting hinge according to claim 5, characterized in that: The two adhesive backings (51) are respectively fixedly bonded to the lower surface of the support base (1) and the upper surface of the adjustment base (11).

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