A hinge with adjustable clearance for easy installation
By introducing the structure of the support pin and the clamping member into the hinge, the problems of inconvenient installation and difficulty in adjusting the seal are solved, and the effects of convenient installation and flexible adjustment are achieved, meeting the needs of different users.
Patent Information
- Application Number
- CN202010457059.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-05-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2040-05-26
AI Technical Summary
The existing hinges are inconvenient during installation, and the sealing pressure and feel of the window sash after closing is not effectively adjusted, which cannot meet the needs of different users.
A hinge including a frame mounting plate, a fan mounting plate, a first support rod and a second support rod is designed. Through the structure of supporting the pin and the clamping member, the hinge is easily installed, and the clearance and sealing adjustment after the window sash is closed is realized.
It realizes convenient installation of hinges and flexible adjustment of sealing and feel after sash closure, meeting the needs of different users and providing a better user experience.
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Figure CN111456578B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of hinges, and in particular relates to a hinge with adjustable gap which is convenient to install. Background Art
[0002] Existing hinges for doors and windows usually include a mounting plate, a long support arm, a short support arm, a window mounting arm and other components that are hinged to each other. A sliding member is provided on the mounting plate, and the structure is relatively simple.
[0003] In the existing hinges, the window frame and the window sash are fixed to the hinges and rely on the hinges to realize opening and closing. The different connection positions of the window frame and the window sash with the hinges will affect the tightness after closing. In order to ensure the sealing of the window sash after closing, sealing strips are usually set on the window frame and the window sash.
[0004] Modern energy-saving requirements are high, and windows need to be more airtight, which leads to the design of larger rubber strips and greater compression, requiring greater sealing pressure. On the other hand, customers also want an easy operating feel, which requires the gap between the hinge and the window to be adjustable to meet the needs of different customers. Windows without gap adjustment function cannot meet these requirements of different customers.
[0005] In addition, in the existing hinge, the window mounting arm is hinged with the short support rod after being fixed to the window sash. The specific structure is that the bottom of the window mounting arm is provided with an axis hole, and the short support rod is provided with a pin shaft, which is inserted into the axis hole from bottom to top to ensure the rotation of the window mounting arm and the short support rod. Under this structure, during the hinge installation process, the window mounting arm is first fixedly connected to the window sash, and the pin shaft of the short support rod is inserted into the axis hole. Since the pin shaft and the axis hole need to keep rotating, there is a certain gap between them. During the operation, the pin shaft and the axis hole of the short support rod are easily separated from each other under the action of gravity, and the short support rod falls downward, which is very inconvenient during installation.
[0006] Therefore, it is necessary to provide a new hinge that is easy to install and adapts to the requirements of different users for the sealing pressure and feel after the window sash is closed. Summary of the invention
[0007] In order to solve the above problems in the prior art, the present invention provides a hinge with adjustable gap that is easy to install. The pin shaft is not easy to fall off during installation and is easy to install. After installation, the pressure and feel of the closing gap of the window sash can be easily adjusted to meet different user needs.
[0008] The present invention adopts the following technical solutions:
[0009] A hinge with adjustable clearance for easy installation, comprising:
[0010] A frame mounting plate, used for fixed connection with the window frame, wherein a slidable first sliding member is provided on the frame mounting plate;
[0011] A sash mounting plate, used for fixed connection with the window sash, wherein a slidable second sliding member is provided on the sash mounting plate, and a first plug hole and a second plug hole are provided at the bottom of one end of the sash mounting plate;
[0012] a first support rod, one end of which is hinged to one end of the frame mounting plate, and the other end of which is hinged to the second sliding member;
[0013] The second support rod has one end hinged with the first sliding member, and the other end is equipped with a support pin and a clamping member; the support pin includes a first shaft portion, a clamping shaft portion and a second rotating shaft portion connected in sequence, the diameter of the clamping shaft portion is smaller than the diameter of the second rotating shaft portion, the first shaft portion is fastened to the second support rod, and the second rotating shaft portion can be rotatably inserted into the first socket; the clamping member includes a clamping column and a claw fixed at one end of the clamping column, the claw is clamped on the clamping shaft portion and can rotate around the clamping shaft portion, and the clamping column is inserted into the second socket and fixed; the middle part of the second support rod is also hinged with the first support rod through an adjusting pin, and the position of the hinge axis of the adjusting pin on the second support rod is adjustable.
[0014] As a further improvement of the technical solution of the present invention, a plurality of vertical slots are provided on the clamping column, and a plurality of ridges which can be fixedly matched with the vertical slots are convexly provided in the second insertion hole.
[0015] As a further improvement of the technical solution of the present invention, a first embedding groove for embedding the claw is further provided on the fan mounting plate between the first plug hole and the second plug hole, and the first embedding groove is connected with the first plug hole and the second plug hole.
[0016] As a further improvement of the technical solution of the present invention, the second rotating shaft portion is spherical.
[0017] As a further improvement of the technical solution of the present invention, the clamping column and the clamping claw are integrally connected and are L-shaped as a whole.
[0018] As a further improvement of the technical solution of the present invention, the adjusting pin includes a third rotating shaft portion and a fourth rotating shaft portion fixed at one end of the third rotating shaft portion, and the axis of the third rotating shaft portion and the axis of the fourth rotating shaft portion are parallel but not coaxial;
[0019] The third rotating shaft portion is hinged to the first supporting rod;
[0020] The fourth rotation shaft portion is hinged to the second support rod, and the diameter of the hinge hole on the second support rod hinged to the fourth rotation shaft portion is greater than or equal to the diameter of the fourth rotation shaft portion so that the fourth rotation shaft portion can rotate around the axis of the third rotation shaft portion.
[0021] As a further improvement of the technical solution of the present invention, the adjusting pin also includes a disc cover, which is fixed to an end of the fourth rotating shaft portion away from the third rotating shaft portion, and the second support rod is provided with a second embedding groove at the upper end of the hinge hole for the disc cover to be embedded, and the shape of the second embedding groove is adapted to the shape of the disc cover.
[0022] As a further improvement of the technical solution of the present invention, the disc cover is provided with a tool connecting groove for circumferentially fixedly connecting with the adjusting tool.
[0023] As a further improvement of the technical solution of the present invention, an adjustment reference mark is provided on the disk cover; and an adjustment direction mark is provided on the second support rod.
[0024] As a further improvement of the technical solution of the present invention, a second bending portion is formed at one end of the second support rod close to the first sliding member, and the second bending portion is provided with a second avoidance opening;
[0025] A first bending portion is provided at one end of the first support rod close to the second sliding member, and a first avoidance opening is provided at the first bending portion, and a position of the first avoidance opening corresponds to a position of the second avoidance opening;
[0026] After the hinge is closed, the second avoidance opening and the first avoidance opening are cross-locked.
[0027] Compared with the prior art, the present invention has the following beneficial effects:
[0028] 1. In the hinge of the present invention, the fan mounting plate and the second support rod are connected by a support pin and a clamping piece, the clamping piece is inserted and fixed at the bottom of the fan mounting plate, the support pin is rotatably inserted at the bottom of the fan mounting plate, and the claw of the clamping piece is clamped on the clamping shaft portion and can rotate around the clamping shaft portion, the second support rod and the fan mounting plate can rotate, because the diameter of the clamping shaft portion is smaller than the diameter of the second rotating shaft portion, when the second support rod and the support pin fall downward, the clamping shaft portion will pull the second rotating shaft portion, so that the second support rod and the support pin cannot be separated from the fan mounting plate, which is convenient for the installation of the hinge;
[0029] 2. In the hinge of the present invention, the sash mounting plate is hinged to the second support rod, and the second support rod and the first support rod are connected by an adjusting pin, and the position of the hinge axis of the adjusting pin on the second support rod is adjustable. Under this structure, when the entire hinge is closed, the frame mounting plate, the sash mounting plate, the first support rod and the second support rod are all overlapped together, and the first support rod and the second support rod are hinged. The window sash is closed on the window frame as the sash mounting plate is closed. At this time, adjusting the position of the hinge axis of the adjusting pin on the second support rod will change the front and rear positions of the first support rod and the second support rod after overlapping, thereby changing the front and rear positions of the sash mounting plate after overlapping, that is, adjusting the gap and sealing after the window sash is closed. For different users, the gap after the window sash is closed can be adjusted according to their own needs, so that the sealing and opening tightness can meet the needs of users, and different user experiences can be provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0031] Figure 1 It is a schematic diagram of the overall structure of the hinge of the present invention;
[0032] Figure 2 is an exploded view of the hinge of the present invention;
[0033] Figure 3 is an exploded schematic diagram of the hinge of the present invention in a closed state;
[0034] Figure 4 This is a structural view of the hinge of the present invention when the support pin and the clamping piece are clamped together;
[0035] Figure 5 is a schematic structural diagram of the second support rod of the present invention when it is placed sideways;
[0036] Figure 6 It is a structural schematic diagram of the adjusting pin shaft of the present invention.
[0037] Reference numerals:
[0038] 100-frame mounting plate; 110-first sliding member;
[0039] 200 - fan mounting plate; 210 - second sliding member; 220 - first plug hole; 230 - second plug hole; 231 - convex edge; 240 - first embedding groove;
[0040] 300 - first support rod; 310 - first bending portion; 311 - first avoidance opening;
[0041] 400-second support rod; 410-support pin; 411-first shaft; 412-clamping shaft; 413-second rotating shaft; 420-clamping piece; 421-clamping column; 4211-vertical clamping slot; 422-clamping claw; 430-adjusting pin; 431-third rotating shaft; 432-fourth rotating shaft; 433-disc cover; 4331-tool connection slot; 4332-adjusting reference mark; 440-hinge hole; 450-second embedding slot; 460-adjusting direction mark; 470-second bending portion; 471-second avoidance opening. DETAILED DESCRIPTION
[0042] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.
[0043] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.
[0044] Reference Figures 1 to 6 A hinge with adjustable gap that is easy to install includes a frame mounting plate 100, a fan mounting plate 200, a first support rod 300 and a second support rod 400.
[0045] The frame mounting plate 100 is used for fixed connection with the window frame, and can be inserted into the profile of the window frame. The frame mounting plate 100 is provided with a slidable first sliding member 110, and the frame mounting plate 100 is provided with a sliding groove, and the first sliding member 110 slides along the sliding groove.
[0046] like Figures 1 to 4 As shown, the sash mounting plate 200 is used to be fixedly connected to the window sash, and it can be inserted into the profile of the window frame. The sash mounting plate 200 is provided with a slidable second sliding member 210, and the sash mounting plate 200 is also provided with a sliding groove, and the sliding member slides along the sliding groove. The bottom of one end of the sash mounting plate 200 is provided with a first hole 220 and a second hole 230, and the first hole 220 and the second hole 230 are respectively used to install the support pin 410 and the clamping member 420 of the second support rod 400.
[0047] like Figures 1 to 3As shown, one end of the first support rod 300 is hinged to one end of the frame mounting plate 100, and the other end is hinged to the second sliding member 210. The first support rod 300 is provided with a first bending portion 310 at one end close to the second sliding member 210, and the first bending portion 310 is provided with a first avoidance opening 311.
[0048] like Figures 1 to 3 and Figure 5 As shown, one end of the second support rod 400 is hinged to the first sliding member 110, and the second support rod 400 forms a second bending portion 470 at one end close to the first sliding member 110. The second bending portion 470 is provided with a second avoidance opening 471, and the position of the first avoidance opening 311 corresponds to the position of the second avoidance opening 471; after the hinge is closed, the second avoidance opening 471 and the first avoidance opening 311 are cross-engaged.
[0049] like Figures 1 to 5 The other end of the second support rod 400 is installed with a support pin 410 and a clamping piece 420. The support pin 410 is used to achieve a rotational connection with the fan mounting plate 200, and the clamping piece 420 is used to prevent the support pin 410 from falling off the fan mounting plate 200 during the installation process.
[0050] Among them, Figures 1 to 5 As shown, the support pin 410 includes a first shaft portion 411, a clamping shaft portion 412, and a second rotating shaft portion 413 connected in sequence, the diameter of the clamping shaft portion 412 is smaller than the diameter of the second rotating shaft portion 413, the first shaft portion 411 is fastened to the second support rod 400, the shape of the first shaft portion 411 can be cylindrical, vertical section cylindrical or prism-shaped, and the second support rod 400 has a mounting hole of corresponding shape; the second rotating shaft portion 413 is rotatably inserted into the first plug hole 220. As a preferred embodiment of the present invention, the first shaft portion 411 is cylindrical, the clamping shaft portion 412 is also cylindrical, and the second rotating shaft portion 413 can be cylindrical or spherical, preferably spherical.
[0051] like Figures 1 to 5 As shown, the clamping member 420 includes a clamping column 421 and a clamping claw 422 fixed at one end of the clamping column 421, the clamping column 421 and the clamping claw 422 are integrally connected and are L-shaped as a whole, the clamping claw 422 is clamped on the clamping shaft portion 412 and can rotate around the clamping shaft portion 412, and the clamping column 421 is inserted into the second insertion hole 230 and fixed. The clamping claw 422 is crescent-shaped, and the position where it is connected to the clamping shaft portion 412 is a minor arc, and the diameter of the minor arc is larger than the diameter of the clamping shaft portion 412 and smaller than the diameter of the second rotating shaft portion 413.
[0052] Based on the above structure, the fan mounting plate 200 and the second support rod 400 are connected by the support pin 410 and the clamping piece 420. The clamping piece 420 is inserted and fixed at the bottom of the fan mounting plate 200, and the support pin 410 is rotatably inserted at the bottom of the fan mounting plate 200. At the same time, the claw 422 of the clamping piece 420 is clamped on the clamping shaft 412 and can rotate around the clamping shaft 412. The second support rod 400 and the fan mounting plate 200 can rotate. Since the diameter of the clamping shaft 412 is smaller than the diameter of the second rotating shaft 413, when the second support rod 400 and the support pin 410 fall downward, the clamping shaft 412 will pull the second rotating shaft 413, so that the second support rod 400 and the support pin 410 cannot be separated from the fan mounting plate 200, thereby facilitating the installation of the hinge.
[0053] Specifically, Figure 4 and Figure 5 As shown, in order to realize the fixed connection between the clamping member 420 and the fan mounting plate 200, a plurality of vertical clamping grooves 4211 are provided on the clamping column 421, and a plurality of convex ridges 231 which can be fixed with the vertical clamping grooves 4211 are convexly provided in the second plug hole 230. Each vertical clamping groove 4211 is evenly arranged on the clamping column 421, and correspondingly, each convex ridge 231 can be evenly arranged in the second plug hole 230. The vertical clamping groove 4211 can be inserted more conveniently. There is an interference fit between the vertical clamping groove 4211 and the convex ridge 231, and a certain amount of force is required to insert the clamping column 421 into the second plug hole 230. Since the weight of the entire hinge is small, the clamping column 421 cannot be pulled down and out of the second plug hole 230 only under the action of gravity, thereby preventing the second support rod 400 from being separated from the fan mounting plate 200 during installation.
[0054] Among them, Figure 5 As shown, a first embedding groove 240 for embedding the claw 422 is provided between the first socket 220 and the second socket 230 on the fan mounting plate 200. The first embedding groove 240 is connected with the first socket 220 and the second socket 230. After the claw 422 is embedded in the first embedding groove 240, it can prevent the claw 422 from being exposed to the outside and causing friction, thereby protecting the claw 422 and avoiding damage to the claw 422.
[0055] In addition, if Figures 1 to 3 and Figure 6 As shown, in order to achieve adjustable gap after the window sash is closed after the hinge is installed, the middle part of the second support rod 400 is also hinged to the first support rod 300 through an adjustment pin 430, and the position of the adjustment pin 430 on the hinge axis of the second support rod 400 is adjustable.
[0056] Based on the above structure, the sash mounting plate 200 is hinged to the second support rod 400, and the second support rod 400 and the first support rod 300 are connected by an adjusting pin 430, and the position of the hinge axis of the adjusting pin 430 on the second support rod 400 is adjustable. Under this structure, when the entire hinge is closed, the frame mounting plate 100, the sash mounting plate 200, the first support rod 300 and the second support rod 400 are all superimposed together, and the first support rod 300 and the second support rod 400 are hinged, and the window sash moves with the movement of the window sash. The sash mounting plate 200 is closed on the window frame. At this time, adjusting the position of the hinge axis of the adjustment pin 430 on the second support rod 400 will change the front and rear positions of the first support rod 300 and the second support rod 400 after being overlapped, thereby changing the front and rear positions of the sash mounting plate 200 after being overlapped, that is, adjusting the gap and sealing after the window sash is closed. Different users can adjust the gap after the window sash is closed according to their own needs, so that the sealing and opening tightness can meet the user's needs, and provide different user experiences.
[0057] Among them, Figures 1 to 3 and Figure 6 As shown, the adjustment pin 430 includes a third rotation shaft portion 431 and a fourth rotation shaft portion 432 fixed at one end of the third rotation shaft portion 431, and the axis of the third rotation shaft portion 431 and the axis of the fourth rotation shaft portion 432 are parallel but not coaxial. The third rotation shaft portion 431 is hinged to the first support rod 300; the fourth rotation shaft portion 432 is hinged to the second support rod 400, and the diameter of the hinge hole 440 on the second support rod 400 hinged to the fourth rotation shaft portion 432 is greater than or equal to the diameter of the fourth rotation shaft portion 432 so that the fourth rotation shaft portion 432 can rotate around the axis of the third rotation shaft portion 431, or there is a clearance fit between the hinge hole 440 and the fourth rotation shaft portion 432.
[0058] Based on the above structure, it can be known that the adjustment pin 430 is an eccentric shaft. By rotating the adjustment pin 430, the distance between the first support rod 300 and the second support rod 400 after the hinge is closed can be changed, thereby adjusting the gap between the window sash and the window frame to adjust the sealing effect between the sealing strip and the tightness when the window sash is pulled open.
[0059] Preferably, if Figures 1 to 3 and Figure 6As shown, the adjusting pin 430 further includes a disc cover 433, which is fixed to one end of the fourth rotating shaft portion 432 away from the third rotating shaft portion 431, and the second supporting rod 400 is provided with a second embedding groove 450 at the upper end of the hinge hole 440 for the disc cover 433 to be embedded, and the shape of the second embedding groove 450 is adapted to the shape of the disc cover 433. The arrangement of the disc cover 433 can shield the gap between the fourth rotating shaft portion 432 and the hinge hole 440, prevent dust or other foreign matter from falling into the hinge hole 440, and also make the hinge more beautiful.
[0060] like Figures 1 to 3 and Figure 6 As shown, the plate cover 433 is provided with a tool connection groove 4331 for circumferentially fixedly connecting with an adjustment tool. The adjustment tool mentioned here can be a screwdriver or a wrench. Specifically, the tool connection groove 4331 is a regular hexagonal groove, a rectangular groove, a cross groove, a straight groove, a triangular groove or a hexagonal groove, and the corresponding adjustment tool is a wrench of a corresponding shape. Preferably, the tool connection groove 4331 is a regular hexagonal groove, and the adjustment tool is a hexagonal wrench.
[0061] In order to facilitate the user to quickly identify the gap adjustment direction corresponding to the adjustment direction of the adjustment pin 430, such as Figures 1 to 3 and Figure 6 As shown, the disk cover 433 is provided with an adjustment reference mark 4332, and the reference mark position is a horizontal line. The second support rod 400 is provided with an adjustment direction mark 460, and the adjustment direction mark 460 has an arrow, and has a plus sign and a minus sign to indicate the increase or decrease of the gap adjustment. The user can adjust according to the instructions without trying in each direction.
[0062] Among them, Figure 6 As shown, the adjustment pin 430 is an integrated structure, that is, the third rotation shaft portion 431, the fourth rotation shaft portion 432 and the disk cover 433 are integrally formed and firmly connected.
[0063] For other contents of the hinge with adjustable gap for easy installation described in the present invention, please refer to the prior art and will not be described in detail here.
[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.
Claims
1. A hinge with adjustable gap for easy installation, characterized in that: include: A frame mounting plate, used for fixed connection with the window frame, wherein a slidable first sliding member is provided on the frame mounting plate; A sash mounting plate, used for fixed connection with the window sash, wherein a slidable second sliding member is provided on the sash mounting plate, and a first plug hole and a second plug hole are provided at the bottom of one end of the sash mounting plate; a first support rod, one end of which is hinged to one end of the frame mounting plate, and the other end of which is hinged to the second sliding member; The second support rod has one end hinged with the first sliding member, and the other end is equipped with a support pin and a clamping member; the support pin includes a first shaft portion, a clamping shaft portion and a second rotating shaft portion connected in sequence, the diameter of the clamping shaft portion is smaller than the diameter of the second rotating shaft portion, the first shaft portion is tightly connected to the second support rod, and the second rotating shaft portion can be rotatably inserted into the first insertion hole; the clamping member includes a clamping column and a claw fixed at one end of the clamping column, the claw is clamped on the clamping shaft portion and can rotate around the clamping shaft portion, the clamping column is inserted into the second insertion hole and fixed; the middle part of the second support rod is also hinged with the first support rod through an adjusting pin, and the position of the hinge axis of the adjusting pin on the second support rod is adjustable; The clamping column and the clamping claw are connected as a whole and are L-shaped as a whole; The second rotating shaft portion is spherical.
2. The hinge with adjustable gap for easy installation according to claim 1, characterized in that: The clamping column is provided with a plurality of vertical clamping slots, and the second insertion hole is provided with a plurality of convex ridges which can be matched and fixed with the vertical clamping slots.
3. The hinge with adjustable gap for easy installation according to claim 1, characterized in that: The fan mounting plate is further provided with a first embedding groove for embedding the claw between the first insertion hole and the second insertion hole, and the first embedding groove is connected with the first insertion hole and the second insertion hole.
4. The hinge with adjustable gap for easy installation according to any one of claims 1 to 3, characterized in that: The adjusting pin comprises a third rotating shaft portion and a fourth rotating shaft portion fixed to one end of the third rotating shaft portion, wherein the axis of the third rotating shaft portion and the axis of the fourth rotating shaft portion are parallel but not coaxial; The third rotating shaft portion is hinged to the first supporting rod; The fourth rotation shaft portion is hinged to the second support rod, and the diameter of the hinge hole on the second support rod hinged to the fourth rotation shaft portion is greater than or equal to the diameter of the fourth rotation shaft portion so that the fourth rotation shaft portion can rotate around the axis of the third rotation shaft portion.
5. The hinge with adjustable gap for easy installation according to claim 4, characterized in that: The adjusting pin also includes a disc cover, which is fixed to an end of the fourth rotating shaft portion away from the third rotating shaft portion. The second support rod is provided with a second embedding groove at the upper end of the hinge hole for the disc cover to be embedded, and the shape of the second embedding groove is adapted to the shape of the disc cover.
6. The hinge with adjustable gap for easy installation according to claim 5, characterized in that: The disc cover is provided with a tool connection groove for circumferentially fixed connection with the adjustment tool.
7. The hinge with adjustable gap for easy installation according to claim 5, characterized in that: The disk cover is provided with an adjustment reference mark; the second support rod is provided with an adjustment direction mark.
8. The hinge with adjustable gap for easy installation according to any one of claims 1 to 3, characterized in that: A second bending portion is formed at one end of the second support rod close to the first sliding member, and the second bending portion is provided with a second avoidance opening; A first bending portion is provided at one end of the first support rod close to the second sliding member, and a first avoidance opening is provided at the first bending portion, and a position of the first avoidance opening corresponds to a position of the second avoidance opening; After the hinge is closed, the second avoidance opening and the first avoidance opening are cross-locked.
Citation Information
Patent Citations
Gap-adjustable hinge convenient to install
CN212389183U