Multi-gear adjusting hinge
By using a multi-position adjustable hinge design, and combining a slide bar, a limit shaft, a housing, a ratchet, and a small toothed block, the seat footrest can be precisely and stably adjusted. This solves the problems of inconvenience and insufficient precision of existing hinges with multi-position adjustment, and improves the user experience.
Patent Information
- Application Number
- CN202520491250.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-19
AI Technical Summary
The existing seat cushion foot hinges have inconvenient multi-position adjustment and insufficient precision, which cannot meet the personalized angle adjustment needs of different users.
The hinge design, which features multi-position adjustment, includes a slide bar, a limit shaft, a housing, a ratchet, and a small toothed block. Through the unidirectional engagement of the first and second ratchet sections, combined with the design of a coil spring and a clip, precise and stable angle adjustment can be achieved.
It offers a wide range of gear options, ensuring accurate positioning with each adjustment, improving the precision and stability of adjustment, enhancing user comfort and flexibility, and extending the product's lifespan.
Smart Images
Figure CN223799525U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hinge technical field especially relates to a multi -gear adjustment's hinge. BACKGROUND
[0002] In modern office and home environment, the design of the seat pays more and more attention to ergonomics to improve the comfort and health of the user. As an important part of the seat, the role of the foot pad (foot rest) is not only to provide additional support, but also to help users find the most comfortable posture when resting or relaxing. The traditional foot pad usually only has a fixed angle or limited adjustment options, which cannot meet the needs of different users for personalized angle adjustment. Therefore, developing a hinge that can be adjusted in multiple gears for the seat foot pad becomes the key to improving user experience.
[0003] The utility model aims at solving the inconvenient multi -gear adjustment and insufficient precision of the prior art seat foot pad hinge. UTILITY MODEL CONTENTS
[0004] The utility model discloses a hinge that can be adjusted in multiple gears for the seat foot pad, which solves the inconvenient multi -gear adjustment and insufficient precision of the prior art seat foot pad hinge.
[0005] A hinge that can be adjusted in multiple gears, comprising a slide rod, one end of the slide rod is hinged with a hinge part, the hinge part comprises a limiting shaft and a shell, the limiting shaft is connected with the slide rod, the shell is sleeved on the limiting shaft, the limiting shaft is rotationally connected with the shell, a ratchet wheel and a small tooth block are arranged in the shell, the ratchet wheel is connected with the limiting shaft, the ratchet wheel is provided with a first ratchet part, the small tooth block is provided with a second ratchet part, the first ratchet part is unidirectionally connected with the second ratchet part, and the first ratchet part occupies more than one half of the circumferential surface of the ratchet wheel.
[0006] The utility model discloses a hinge that can be adjusted in multiple gears, which solves the inconvenient multi -gear adjustment and insufficient precision of the prior art seat foot pad hinge.
[0007] The utility model discloses a hinge that can be adjusted in multiple gears, which solves the inconvenient multi -gear adjustment and insufficient precision of the prior art seat foot pad hinge.
[0008] As described above, in a multi-position adjustable hinge, the slide groove has a first inclined portion, one end of the small tooth block has a second inclined portion, the other end of the small tooth block has a third inclined portion, the ratchet has a first protrusion on one side of the first ratchet portion, and the ratchet has a second protrusion on the other side of the first ratchet portion.
[0009] As described above, in a multi-position adjustable hinge, the first ratchet portion has thirty-two ratchet teeth, and the second ratchet portion has five ratchet teeth.
[0010] As described above, in a multi-position adjustable hinge, an L-shaped block is mounted on one side of the housing. The L-shaped block includes a vertical surface and a horizontal surface, with the vertical surface facing the slide rod.
[0011] As described above, in a multi-position adjustable hinge, one end of the slide rod is provided with a through groove that engages with the locking part, and the limiting shaft is sleeved inside one end of the slide rod through the through groove.
[0012] As described above, in a multi-position adjustable hinge, the side wall of the clamp is provided with at least one groove, which engages with the inner cavity of the housing.
[0013] Implementing the embodiments of this utility model has the following beneficial effects:
[0014] 1. In this utility model, when the user adjusts the hinge angle of the foot pad, the first ratchet and the second ratchet engage in one direction, ensuring that each adjustment is accurately positioned at the preset level. Since the first ratchet occupies more than half of the ratchet's circumferential surface, it provides a wide range of level options, guaranteeing the accuracy and stability of the adjustment.
[0015] In summary, this utility model solves the problems of inconvenience and insufficient precision of existing seat foot hinges with multiple adjustment positions. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of a hinge with multiple adjustable positions according to this utility model.
[0018] Figure 2 yes Figure 1 A structural diagram from another angle.
[0019] Figure 3Is the structure schematic view of the hinged part of the hinge of multiple-gear adjustment of the utility model.
[0020] Figure 4 Is Figure 3 The structure schematic view of another angle.
[0021] Figure 5 Is the structure schematic view of the hinged part of the hinge of multiple-gear adjustment of the utility model after removing a piece of clamping piece.
[0022] Figure 6 Is the structure schematic view of the pinion block of the hinge of multiple-gear adjustment of the utility model.
[0023] Figure 7 Is the structure schematic view of the ratchet wheel of the hinge of multiple-gear adjustment of the utility model.
[0024] Figure 8 Is the structure schematic view of the clamping piece of the hinge of multiple-gear adjustment of the utility model.
[0025] Figure 9 Is the structure schematic view of the pinion block and the ratchet wheel of the hinge of multiple-gear adjustment of the utility model after disengaging.
[0026] As shown in the figure:
[0027] 1, hinged part; 11, shell; 12, clamping piece; 121, sliding groove; 1211, first inclined part; 122, through hole; 13, clamping block; 14, limiting column; 16, coil spring; 17, ratchet wheel; 171, clamping groove; 172, first protruding part; 173, first ratchet part; 174, second protruding part; 18, limiting shaft; 181, clamping part; 182, insertion slot; 19, pinion block; 191, second inclined part; 192, second ratchet part; 193, third inclined part; 110, spring piece; 2, sliding rod; 3, L-shaped block. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0029] As Figures 1 to 9The utility model provides a multi -gear adjustment's hinge, including slide rod 2, one end hinge of slide rod 2 has the hinge part 1, the hinge part 1 includes limit axle 18, the shell 11, limit axle 18 with slide rod 2 is clamped, the shell 11 is set in limit axle 18, limit axle 18 with the rotation connection of shell 11, be provided with ratchet wheel 17, pinion block 19 in the shell 11, ratchet wheel 17 with limit axle 18 clamps, ratchet wheel 17 is provided with first ratchet part 173, pinion block 19 is provided with second ratchet part 192, first ratchet part 173 with second ratchet part 192 one -way joint, first ratchet part 173 occupies the circumference surface more than one -half of ratchet wheel 17. When user adjusts the footboard angle, first ratchet part 173 with second ratchet part 192 realize one -way joint, so that every time adjustment can be accurately positioned on the preset gear. Since first ratchet part occupies the circumference surface more than one -half of ratchet wheel, provides abundant gear selection, guarantees the accuracy and stability of adjustment.
[0030] Further, as the preferred embodiment of the present application but not limited, the limiting shaft 18 is provided with a clamping part 181, the ratchet 17 is provided with a clamping groove 171 clamped with the clamping part 181, one end of the limiting shaft 18 is provided with a insertion slot 182, the housing 11 is fixedly connected with a limiting column 14, the limiting shaft 18 is sleeved with a coil spring 16, one end of the coil spring 16 is clamped with the insertion slot 182, the other end of the coil spring 16 is clamped with the limiting column 14. The housing 11 is provided with a clamping block 13, both sides of the clamping block 13 are mounted with clamping pieces 12, the clamping pieces 12 are provided with through holes 122, the clamping pieces 12 are sleeved outside the limiting shaft 18 through the through holes 122, the clamping pieces 12 are provided with sliding grooves 121, the small tooth blocks 19 are slidingly arranged in the sliding grooves 121, one side of the clamping block 13 is mounted with a spring piece 110, the spring piece 110 is used for pushing the small tooth blocks 19 to the ratchet 17. The sliding groove 121 is provided with a first inclined part 1211, one end of the small tooth block 19 is provided with a second inclined part 191, the other end of the small tooth block 19 is provided with a third inclined part 193, the ratchet 17 is provided with a first protruding part 172 on one side of the first ratchet part 173, the ratchet 17 is provided with a second protruding part 174 on the other side of the first ratchet part 173. The coil spring 16 is used for driving the housing 11 to rotate, thereby driving the clamping pieces 12, the clamping block 13 to rotate, further driving the ratchet 17 to rotate, thereby the housing 11 can be reset to the initial position after the ratchet 17 and the small tooth block 19 are disengaged, specifically, the small tooth block 19 is pressed against the ratchet 17 by the spring piece 110 in the normal use state, at this time the small tooth block 19 can only rotate around the ratchet 17 in one direction, ensuring that each adjustment can be accurately positioned on the preset gear, the spring piece 110 is simultaneously stored when the small tooth block 19 rotates, when the small tooth block 19 moves to the second protruding part 174, the second protruding part 174 abuts against the second inclined part 191, the small tooth block 19 cannot continue to move, with the continuous rotation of the clamping piece 12, the first inclined part 1211 contacts the third inclined part 193, the small tooth block 19 is lifted by the first inclined part 1211 and disengaged from the ratchet 17, at the same time the small tooth block 19 falls to one end of the sliding groove 121, because the small tooth block 19 is pressed tightly by the spring piece 110, so at this time the position of the small tooth block 19 relative to the sliding groove 121 is stationary, because the small tooth block 19 is disengaged from the ratchet 17, the coil spring 16 is not limited, thereby starting to reset, thereby driving the housing 11 and the components inside which need to be reset to reset, that is, reversely rotate back to the initial position, when reversely rotating to a certain position, the first protruding part 172 pushes the small tooth block 19 to the other end of the sliding groove 121, thereby making the small tooth block 19 reengage with the ratchet 17. The locking state is restored, preparing for the next adjustment.The reset mechanism of the coil spring 16 ensures that the components can quickly return to the initial position after disengagement, while the spring leaf 110 ensures that the small tooth block 19 is always in close contact with the ratchet wheel 17, thereby maintaining the stability and reliability of the system.
[0031] Optionally, in some embodiments, the first ratchet section 173 is provided with thirty-two ratchets, and the second ratchet section 192 is provided with five ratchets. The design of thirty-two ratchets greatly improves the fineness of adjustment, allowing users to make precise adjustments in smaller angular increments, improving the comfort and flexibility of use. Secondly, the five ratchets on the small tooth block 19 increase the contact area with the ratchet wheel 17, enhancing the stability and reliability of one-way locking, reducing the possibility of loosening or misalignment during long-term use.
[0032] Further, as a preferred embodiment of the present application but not limited, one side of the shell 11 is mounted with an L-shaped block 3, which includes a vertical face and a horizontal face, and the vertical face faces the slide rod 2. The L-shaped block 3 is used to connect external components, and the vertical face of the L-shaped block 3 facing the slide rod 2 means that the horizontal face of the L-shaped block 3 will not contact the slide rod 2 during rotation, thereby avoiding rotation restriction caused by contact. This design significantly increases the rotation range, allowing users to make angular adjustments in a wider range, providing higher flexibility and adaptability. At the same time, since the horizontal face does not contact the slide rod 2, unnecessary friction and mechanical wear are reduced, prolonging the service life of the product.
[0033] Further, as a preferred embodiment of the present application but not limited, one end of the slide rod 2 is provided with a through slot that is clamped with the clamping part 181, and the limiting shaft 18 is sleeved in one end of the slide rod 2 through the through slot. Through the design of the through slot and the clamping part 181, the limiting shaft 18 can be conveniently installed in one end of the slide rod 2, simplifying the assembly process.
[0034] Further, as a preferred embodiment of the present application but not limited, at least one groove is opened in the side wall of the clamping piece 12, and the groove is clamped with the inner cavity of the shell 11. The groove in the side wall of the clamping piece 12 is clamped with the inner cavity of the shell 11, ensuring the stable installation of the clamping piece 12 in the shell 11, avoiding the loosening or misalignment phenomenon that may occur during use, enhancing the stability of the overall structure, and improving the reliability of the product.
[0035] Example one:
[0036] The utility model provides a kind of multi-gear adjustment's hinge, including slide bar 2, the one end hinge of slide bar 2 has hinged part 1, hinged part 1 includes limit shaft 18, shell 11, limit shaft 18 is clamped with slide bar 2, shell 11 is set in limit shaft 18, limit shaft 18 is rotatably connected with shell 11, ratchet wheel 17, small tooth block 19 are provided in shell 11, ratchet wheel 17 is clamped with limit shaft 18, ratchet wheel 17 is provided with first ratchet part 173, small tooth block 19 is provided with second ratchet part 192, first ratchet part 173 and second ratchet part 192 one-way joint, first ratchet part 173 occupies more than one half of the circumferential surface of ratchet wheel 17. When user adjusts foot pad hinge angle, first ratchet part 173 and second ratchet part 192 realize one-way joint, so that every adjustment can be accurately positioned on the preset gear. Since first ratchet part occupies more than one half of the circumferential surface of ratchet wheel, it provides rich gear selection, guarantees the accuracy and stability of adjustment.
[0037] The limiting shaft 18 is provided with a clamping portion 181, the ratchet wheel 17 is provided with a clamping groove 171, the clamping groove 171 is clamped with the clamping portion 181, one end of the limiting shaft 18 is provided with a insertion slot 182, the shell 11 is fixedly connected with a limiting column 14, the limiting shaft 18 is provided with a coil spring 16, one end of the coil spring 16 is clamped with the insertion slot 182, the other end of the coil spring 16 is clamped with the limiting column 14. The shell 11 is provided with a clamping block 13, the clamping block 13 is provided with a clamping piece 12 on both sides, the clamping piece 12 is provided with a through hole 122, the clamping piece 12 is sleeved outside the limiting shaft 18 through the through hole 122, the clamping piece 12 is provided with a sliding groove 121, the small tooth block 19 is slidingly arranged in the sliding groove 121, the clamping block 13 is provided with a spring piece 110 on one side, the spring piece 110 is used for pushing the small tooth block 19 to the ratchet wheel 17. The sliding groove 121 is provided with a first inclined portion 1211, one end of the small tooth block 19 is provided with a second inclined portion 191, the other end of the small tooth block 19 is provided with a third inclined portion 193, the ratchet wheel 17 is provided with a first protruding portion 172 on one side of the first ratchet portion 173, the ratchet wheel 17 is provided with a second protruding portion 174 on the other side of the first ratchet portion 173. The coil spring 16 is used for driving the shell 11 to rotate, thereby driving the clamping piece 12, the clamping block 13 to rotate, further driving the ratchet wheel 17 to rotate, thereby the shell 11 can be reset to the initial position after the ratchet wheel 17 and the small tooth block 19 are disengaged, specifically, the small tooth block 19 is pressed tightly to the ratchet wheel 17 by the spring piece 110 in the normal use state, at this time, the small tooth block 19 can only rotate around the ratchet wheel 17 in one direction, ensuring that each adjustment can be accurately positioned on the preset gear, the spring piece 110 is simultaneously stored when the small tooth block 19 rotates, when the small tooth block 19 moves to the second protruding portion 174, the second protruding portion 174 abuts against the second inclined portion 191, the small tooth block 19 cannot continue to move, with the continuous rotation of the clamping piece 12, the first inclined portion 1211 contacts the third inclined portion 193, the small tooth block 19 is lifted by the first inclined portion 1211 and disengaged from the ratchet wheel 17, at the same time, the small tooth block 19 falls to one end of the sliding groove 121, because the small tooth block 19 is pressed tightly by the spring piece 110, at this time, the position of the small tooth block 19 relative to the sliding groove 121 is stationary, because the small tooth block 19 is disengaged from the ratchet wheel 17, the coil spring 16 is not limited, thereby starting to reset, thereby driving the shell 11 and the components inside which need to be reset to reset, that is, reversely rotate to the initial position, when reversely rotating to a certain position, the first protruding portion 172 pushes the small tooth block 19 to the other end of the sliding groove 121, thereby making the small tooth block 19 reengage with the ratchet wheel 17. The locking state is restored, preparing for the next adjustment. The reset mechanism of the coil spring 16 ensures that the components can quickly return to the initial position after disengagement, and the spring piece 110 ensures that the small tooth block 19 is always tightly attached to the ratchet wheel 17, thereby maintaining the stability and reliability of the system.
[0038] The first ratchet part 173 is provided with thirty-two ratchets, and the second ratchet part 192 is provided with five ratchets. The design of thirty-two ratchets greatly improves the fineness of adjustment, enabling users to make precise adjustments in smaller angular increments, improving the comfort and flexibility of use. Secondly, the five ratchets on the small tooth block 19 increase the contact area with the ratchet 17, enhancing the stability and reliability of one-way locking, and reducing the possibility of loosening or misalignment during long-term use.
[0039] An L-shaped block 3 is mounted on one side of the shell 11, which includes a vertical face and a horizontal face, and the vertical face faces the slide rod 2. The L-shaped block 3 is used to connect external components, and the vertical face of the L-shaped block 3 facing the slide rod 2 means that the horizontal face of the L-shaped block 3 will not contact the slide rod 2 when rotating, thereby avoiding rotation restrictions caused by contact. This design significantly increases the rotation range, enabling users to make angular adjustments in a wider range, providing higher flexibility and adaptability. At the same time, since the horizontal face does not contact the slide rod 2, unnecessary friction and mechanical wear are reduced, prolonging the service life of the product.
[0040] One end of the slide rod 2 is provided with a through slot that is clamped with the clamping part 181, and the limiting shaft 18 is sleeved in one end of the slide rod 2 through the through slot. Through the design of the through slot and the clamping part 181, the limiting shaft 18 can be conveniently installed in one end of the slide rod 2, simplifying the assembly process.
[0041] At least one groove is opened in the side wall of the clamping piece 12, which is clamped with the inner cavity of the shell 11. The groove in the side wall of the clamping piece 12 is clamped with the inner cavity of the shell 11, ensuring the stable installation of the clamping piece 12 in the shell 11, avoiding the loosening or misalignment that may occur during use, enhancing the stability of the overall structure, and improving the reliability of the product.
[0042] Specifically, the working principle of the present application is as follows:
[0043] One end of the slide rod 2 is hinged with a hinge part 1, which contains a limiting shaft 18 and a shell 11. The limiting shaft 18 is stably connected with the slide rod 2 through the clamping part 181 and the through slot, ensuring the stability of the structure. The shell 11 is provided with a ratchet 17 and a small tooth block 19, and the first ratchet part 173 on the ratchet 17 is in one-way engagement with the second ratchet part 192 on the small tooth block 19. When the user adjusts the angle of the foot pad, the one-way engagement of the first ratchet part 173 and the second ratchet part 192 ensures that each adjustment can be accurately positioned at the preset gear. Since the first ratchet part 173 occupies more than half of the circumferential surface of the ratchet 17, and is provided with thirty-two ratchets, it provides a rich choice of gears, ensuring the accuracy and stability of the adjustment.
[0044] The both ends of the coil spring 16 are respectively clamped with the insertion slot 182 of the limiting shaft 18 and the limiting column 14 in the shell 11, and reset power is provided for the system. The clamping piece 12 is sleeved outside the limiting shaft 18 through the through hole 122, and the sliding slot 121 is formed, the small tooth block 19 is slidably arranged in the sliding slot 121, is pressed against the ratchet wheel 17 by the spring piece 110, and the one-way locking function is ensured. When the small tooth block 19 moves to the second protruding portion 174, the small tooth block 19 cannot continue to move, and with the continuous rotation of the clamping piece 12, the first inclined portion 1211 is in contact with the third inclined portion 193, the small tooth block 19 is lifted, and the ratchet wheel 17 is disengaged. At this time, the coil spring 16 starts to reset, drives the shell 11 and the internal components to rotate reversely to the initial position. In the reverse rotation process, the first protruding portion 172 pushes the small tooth block 19 to the other end of the sliding slot 121, so that the small tooth block 19 is re-engaged with the ratchet wheel 17, and the locking state is restored, and the next adjustment is prepared.
[0045] The L-shaped block 3 is installed on one side of the shell 11, and includes a vertical surface and a horizontal surface; the vertical surface faces the sliding rod 2, and the horizontal surface does not contact the sliding rod 2 during rotation, thereby avoiding rotation limitation caused by contact and increasing the rotation range. At least one groove is formed in the side wall of the clamping piece 12, and the groove is clamped with the inner cavity of the shell 11, thereby ensuring stable installation of the clamping piece 12 in the shell 11 and avoiding loosening or misplacement.
[0046] In summary, the utility model solves the problems of inconvenient multi-gear adjustment and insufficient precision of the existing seat foot hinge.
[0047] It should be understood that the utility model uses the terms "first", "second" and the like to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the utility model, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information. In addition, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.
[0048] The above is the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and deformations can be made without departing from the principles of the utility model, and these improvements and deformations are also regarded as the protection scope of the utility model.
Claims
1. A multi-step adjustable hinge comprising a slide bar (2) hinged at one end with a hinge part (1), characterized in that, The hinge (1) comprises a limiting shaft (18) and a shell (11), the limiting shaft (18) is clamped with the slide rod (2), the shell (11) is sleeved in the limiting shaft (18), the limiting shaft (18) is rotationally connected with the shell (11), the shell (11) is provided with a ratchet (17) and a small tooth block (19), the ratchet (17) is clamped with the limiting shaft (18), the ratchet (17) is provided with a first ratchet part (173), the small tooth block (19) is provided with a second ratchet part (192), the first ratchet part (173) is unidirectionally connected with the second ratchet part (192), and the first ratchet part (173) occupies more than one half of the circumferential surface of the ratchet (17).
2. A multi-stage adjustable hinge according to claim 1, wherein, The limiting shaft (18) is provided with a clamping part (181), the ratchet (17) is provided with a clamping groove (171), the clamping groove (171) is clamped with the clamping part (181), one end of the limiting shaft (18) is provided with a slot (182), the shell (11) is fixedly connected with a limiting column (14) inside, the limiting shaft (18) is sleeved with a coil spring (16) outside, one end of the coil spring (16) is clamped with the slot (182), and the other end of the coil spring (16) is clamped with the limiting column (14).
3. A multi-stage adjustable hinge according to claim 1, wherein, The shell (11) is provided with a clamping block (13), both sides of the clamping block (13) are provided with clamping pieces (12), the clamping pieces (12) are provided with through holes (122), the clamping pieces (12) are sleeved outside the limiting shaft (18) through the through holes (122), the clamping pieces (12) are provided with sliding grooves (121), the small tooth block (19) is slidingly arranged in the sliding grooves (121), and one side of the clamping block (13) is provided with a spring piece (110).
4. A multi-stage adjustable hinge according to claim 3, wherein, The sliding grooves (121) are provided with first inclined parts (1211), one end of the small tooth block (19) is provided with a second inclined part (191), the other end of the small tooth block (19) is provided with a third inclined part (193), one side of the ratchet (17) is provided with a first protruding part (172) at the first ratchet part (173), and the other side of the ratchet (17) is provided with a second protruding part (174) at the first ratchet part (173).
5. A multi-stage adjustable hinge according to claim 1, wherein, The first ratchet part (173) is provided with thirty-two ratchet teeth, and the second ratchet part (192) is provided with five ratchet teeth.
6. A multi-stage adjustable hinge according to claim 1, wherein, One side of the shell (11) is provided with an L-shaped block (3), the L-shaped block (3) comprises a vertical surface and a horizontal surface, and the vertical surface faces the slide rod (2).
7. A multi-stage adjustable hinge according to claim 2, wherein, One end of the slide rod (2) is provided with a through groove clamped with the clamping part (181), and the limiting shaft (18) is sleeved in one end of the slide rod (2) through the through groove.
8. A multi-stage adjustable hinge according to claim 3, wherein, At least one groove is formed in the side wall of the clamping piece (12), and the groove is clamped with the inner cavity of the shell (11).