Angle turning device

Abstract

The utility model discloses a corner device, and belongs to the technical field of door and window accessories. The corner comprises a corner body, the first end of the corner body is slidably provided with a first connector, and the second end of the corner body is slidably provided with a second connector; the two ends of the transmission piece are connected with the first connector and the second connector respectively, the second connector comprises a rod body and second sliding blocks arranged on the front side and the rear side of the rod body, the thickness of the second sliding blocks is smaller than that of the rod body, and the front side and the rear side of the second end of the corner body are each provided with a second guide groove allowing the second sliding blocks on the two sides to slide in a matched mode. And a second guide groove and a second sliding block are arranged, so that the overall width of the second connector can be wider, the second connector and the second end of the corner body are not prone to deformation, the guide area of the second connector can be increased, the guide sliding stability of the second connector is improved, and the transmission effect of the transmission piece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, and particularly relates to a corner connector. Background Art

[0002] The lock points of ordinary doors and windows are generally only set at the positions corresponding to the handles, while the doors and windows with multiple lock points are additionally provided with lock points on both the upper and lower sides. When operating the handle to drive the lock in the middle to move to open and close the middle lock point, the doors and windows with multiple lock points are provided with flexible transmission parts at the corners on both the upper and lower sides. The longitudinally moving middle lock drives the horizontally arranged locks on both the upper and lower sides to move by using the flexible transmission parts, so as to realize the opening and closing of the lock points on both the upper and lower sides. Since the flexible transmission part has a certain flexibility, during the transmission process, the two sides of the flexible transmission part are limited. However, the unstable movement of the lock also affects the transmission stability of the transmission part, making the lock and the transmission part have a certain shaking or instability relative to the door and window, thus affecting the transmission effect. Content of the Utility Model

[0003] The purpose of the utility model is to provide a corner connector to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0004] The technical solution adopted to solve the above technical problem: the corner connector includes: a corner body, a first joint is slidably arranged at the first end of the corner body, and a second joint is slidably arranged at the second end of the corner body; a transmission piece, both ends of the transmission piece are respectively connected with the first joint and the second joint. The second joint includes a rod body and second sliders arranged on the front and rear sides of the rod body. The thickness of the second slider is smaller than the thickness of the rod body. Second guide grooves for the two second sliders to slide adaptively are respectively arranged on the front and rear sides of the second end of the corner body.

[0005] This technical solution has at least the following beneficial effects: when the second joint slides relative to the corner body, the transmission piece can be pushed to deform and slide on the corner body, so as to push the first joint at the other end to slide, realizing transmission. By setting the second guide grooves and the second sliders, the overall width of the second joint can be made wider, and it is not easy for the second joint and the second end of the corner body to deform. In addition, the guiding area of the second joint can be increased, the guiding sliding stability of the second joint can be improved, and the transmission effect of the transmission piece can be ensured.

[0006] As a further improvement of the above technical solution, an inner cover is provided at the second end of the corner body. A first closed channel for the second joint to slide is formed between the inner cover and the second end of the corner body. The first closed channel formed between the inner cover and the corner body can restrict the sliding of the second joint in all directions on the circumferential side, improve the guiding sliding stability of the second joint, and enable the end of the transmission piece connected to the second joint to slide synchronously and stably, further improving the stability of the transmission piece and the second joint and reducing the situation of shaking or instability. In addition, the connection between the inner cover and the corner body can make the overall structural strength of the second end of the corner body better, prevent deformation when the corner body is installed on the door or window under the action of the reaction force, and ensure that the corner body has a stable structural shape.

[0007] As a further improvement of the above technical solution, an inner plate is provided at the corner position of the corner body. A second closed channel for the transmission piece to slide is formed between the corner body and the inner plate, and the second closed channel is hermetically communicated with the first closed channel. Since the transmission piece is restricted by the closed guiding between the inner plate and the middle part of the corner body, the deformation sliding of the transmission piece has high stability, is not easy to shake or generate other irregular deformations, ensures the transmission effect, reduces the influence on the displacement correspondence relationship between the first joint and the second joint, and further ensures the overall stability of the second joint, the transmission piece and the first joint during the transmission process. At the same time, the second closed channel and the first closed channel are communicated, which can further improve the sealing of the restriction of the transmission piece and further improve the stability of the transmission piece.

[0008] As a further improvement of the above technical solution, the first joint includes a body and first sliders provided on the front and rear sides of the body. The thickness of the first slider is less than the thickness of the body. First guide grooves for the two first sliders on both sides to fit and slide are respectively provided on the front and rear sides of the first end of the corner body. The two first sliders on both sides of the body are slidably arranged in the first guide grooves in a matching manner, so that the first joint can be stably slidably arranged on the first end of the corner body. Compared with the prior art, in which the movement is mainly guided by the transmission piece, in this solution, the first joint is guided and connected by setting the first guide grooves and the first sliders, increasing the width of the first sliders and the guiding area for the first sliders, thereby improving the relative sliding stability between the first joint and the corner body.

[0009] As a further improvement of the above technical solution, the second slider is arranged close to the right side of the rod body. When the second joint moves up and down, by the left end face of the rod body and the second slider respectively abutting against the left and right sides of the first closed channel, the stability of the second slider driving the rod body to slide can be further improved.

[0010] As a further improvement of the above technical solution, the first joint is provided with a connecting column whose axis is perpendicular to the sliding direction of the first joint, and the transmission sheet is provided with a connecting hole for the connecting column to be inserted into. The transmission sheet is inserted into the connecting column through the connecting hole, so that the transmission sheet and the first joint can be connected in a transmission manner, and the connection method is simple and reliable, and the assembly efficiency can be improved.

[0011] As a further improvement of the above technical solution, the front and rear sides of the first end and the second end of the corner body are both provided with side grooves for limiting the front and rear sides of the transmission sheet respectively, the end of the first end of the corner body is provided with a clearance groove connected to the side groove, a plug is embedded and installed in the clearance groove, the plug is provided with a clamping block, and the first end of the corner body is provided with a clamping groove for the clamping block to be embedded. When the first joint and the transmission sheet are assembled, when the transmission sheet is slid to the limit position close to the first end of the corner body, the end of the transmission sheet is just below the clearance groove, and the space of the clearance groove can be used to bend the end of the transmission sheet, so that the first joint is embedded in the first end of the corner body, and the connecting column can be embedded in the connecting hole of the transmission sheet to complete the connection between the first joint and the transmission sheet. Then the plug is embedded in the clearance groove, and the clamping block is clamped in the clamping groove at this time, which can fix the position of the plug, facilitate the installation and removal of the plug, and at the same time, the plug can limit the deformation of the transmission sheet during the transmission force process to prevent the transmission sheet from being separated from the first joint, thereby ensuring the stable connection between the first joint and the transmission sheet.

[0012] As a further improvement of the above technical solution, the height of the connecting column is greater than the depth of the connecting hole, and a slide groove matching the width of the connecting column is provided at the first end of the corner body, and the connecting column passes through the connecting hole and is embedded in the slide groove. The connecting column can completely pass through the connecting hole, and the side where the slide groove opening is located can limit the transmission plate from being separated from the connecting column, preventing the transmission plate from being separated from the transmission connection with the first joint, so as to ensure the connection stability between the first joint and the transmission plate. In addition, the slide groove can limit the sliding of the connecting column, thereby improving the sliding stability of the first joint.

[0013] As a further improvement of the above technical solution, a through hole is provided at the first end of the corner body within the sliding range corresponding to the first joint, and the through hole is used to expose the connecting column. When the first joint moves to the through hole position, the end of the connecting column extending out of the connecting hole will be in the through hole, so that the connecting column and the transmission plate can be further reinforced by welding or riveting, and the connection firmness between the first joint and the transmission plate can be further ensured.

[0014] As a further improvement of the above technical solution, a positioning bead is slidably arranged on the second joint, a positioning groove is arranged at the second end of the corner body corresponding to the initial installation position, an elastic member is installed on the second joint, and the elastic member provides an elastic force for embedding the positioning bead into the positioning groove. It should be noted that the initial installation position refers to the position where, when the second joint is connected to other components, due to the influence of the installation of other components, the second joint needs to be moved to the set initial installation position to facilitate the installation. When the second joint is in the initial installation position, the positioning bead is embedded in the positioning groove under the elastic force of the elastic member, which can provide a definite initial installation position for the installer and facilitate the installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 is a schematic exploded view of an embodiment of the present utility model;

[0017] Figure 2 is a schematic overall structure view of an embodiment of the present utility model;

[0018] Figure 3 is a first partial cross-sectional view of the corner body in the first state of an embodiment of the present utility model;

[0019] Figure 4 is a partial cross-sectional view of the corner body in the second state of an embodiment of the present utility model;

[0020] Figure 5 is a partial cross-sectional view of the corner body and the second joint in the first state of an embodiment of the present utility model;

[0021] Figure 6 is a schematic structural view of the connecting column and the through hole in an embodiment of the present utility model;

[0022] Figure 7 is a partial cross-sectional structural view of both ends of the corner body in an embodiment of the present utility model;

[0023] Figure 8 is an installation schematic view of an embodiment of the present utility model.

[0024] 100, Rotating body; 110, First guide groove; 120, Second guide groove; 130, Through hole; 200, First joint; 300, Second joint; 310, Rod body; 320, Second slider; 400, Transmission piece; 410, Side groove; 420, Inner plate; 430, Second closed channel; 500, Plug; 510, Relief groove; 520, Locking block; 530, Locking groove; 600, Connecting column; 610, Connecting hole; 620, Slide groove; 700, Positioning bead; 710, Positioning groove; 720, Elastic member; 800, Inner cover; 810, First closed channel. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0029] Refer to Figure 1-8 , the corner converter includes a rotating body 100. A second joint 300, a transmission piece 400 and a first joint 200 are installed on the rotating body 100. Among them, the overall shape of the rotating body 100 is L-shaped to adapt to the installation of the rotating body 100 at the corner position of the door or window. One end of the rotating body 100 arranged horizontally is the first end, and the other end of the rotating body 100 arranged vertically is the second end.

[0030] On both the front and rear sides of the first end of the angled body 100, first guide grooves 110 are provided. The first guide grooves 110 are located on the side of the first end of the angled body 100 close to the second end, that is, the bottom side position. The two first guide grooves 110 are symmetrically arranged with respect to the front and rear center plane of the angled body 100. The first joint 200 includes a body, and first sliders are protruded on both the front and rear sides of the body. The thickness of the first slider is less than the thickness of the first joint 200. The two first sliders at both ends of the first joint 200 are adaptively embedded in the corresponding first guide grooves 110, so that the side walls of the first guide grooves 110 limit the sliding direction of the corresponding first sliders, ensuring the sliding stability of the first sliders in the first guide grooves 110, that is, ensuring the relative sliding stability of the first joint 200 relative to the angled body 100.

[0031] Since the first end and the second end of the angled body 100 are generally ninety-degree bent corners, the first end and the second end of the angled body 100 are generally cast separately and then assembled and connected. However, the assembly connection between the first end and the second end of the angled body 100 will have a certain impact on the sliding smoothness of the transmission piece 400. In the embodiment of the present application, an inner cover 800 is provided on the side of the second end of the angled body 100 close to the first end, that is, the left side position.

[0032] A first closed channel 810 is formed between the inner cover 800 and the angled body 100. The second joint 300 is longitudinally slidably arranged in the first closed channel 810. The inner cover 800 and the angled body 100 are integrally formed. Specifically, when manufacturing the angled body 100, an inner core mold is provided to form the first closed channel 810 inside the angled body 100, thereby forming the first closed channel 810 between the inner cover 800 and the angled body 100. In other embodiments, the inner cover 800 and the angled body 100 can also be cast separately and then installed at the left side position of the second end of the angled body 100 by means of welding, clamping, riveting, tenoning, and bolt connection.

[0033] On the front and back sides of the second end of the corner body 100, second guide grooves 120 are provided. The second guide grooves 120 are located on the side of the second end of the corner body 100 close to the first end, that is, the left side position. The two second guide grooves 120 are symmetrically arranged with respect to the front and back center plane of the corner body 100. The second joint 300 includes a rod body 310. Second sliders 320 protrude from the front and back end faces of the rod body 310. The second sliders 320 are arranged close to the right side of the rod body 310, and the thickness of the second sliders 320 is less than the thickness of the rod body 310. The rod body 310 includes a left end face, and the left end face of the rod body 310 abuts against the inner wall of the inner cover 800. To further improve the sliding stability of the second joint 300. The two second sliders 320 at both ends of the second joint 300 are embedded in the corresponding second guide grooves 120, so that the side walls of the second guide grooves 120 limit the sliding positions of the corresponding second sliders 320. In addition, the whole rod body 310 is sleeved in the first closed channel 810, and the inner wall of the inner cover 800 also defines the sliding position of the rod body 310, thereby improving the relative sliding stability of the second joint 300 relative to the corner body 100 and effectively preventing the second joint 300 from tilting and swinging in the up and down direction during the sliding process.

[0034] It can be understood that the two second sliders 320 are like wings growing on both sides of the rod body 310. By using the two wings, not only can the width of the connection between the second joint 300 and the corner body 100 be increased, making the connection strength of the second joint greater, but also the second sliders 320 and the end faces of the rod body 310 are used for guiding connection. Compared with the prior art that relies on a transmission piece for guiding connection, the guiding stability can be improved, the axial compression of the transmission piece can be reduced, and the movement of the corner device can be made smoother.

[0035] Generally, the connection strength between the corner device and the second joint 300 is weak. Therefore, in this embodiment, only a closed guiding channel is provided at the second end (i.e., the vertical end) of the corner device, while an open guiding channel in the prior art is still used at the first end (i.e., the horizontal end). In some other cases, in order to improve the connection strength between the corner device and the two joints at the same time, in addition to providing a closed channel at the second end, a closed channel can also be provided at the first end.

[0036] As a further optimization of the above embodiments, two connecting columns 600 are arranged side by side in the left-right direction on the upper side of the first joint 200, and the axis of the connecting column 600 on the first joint 200 is perpendicular to the sliding direction of the first joint 200. Two connecting columns 600 with the same structure are arranged side by side in the up-down direction on the right side of the second joint 300, and the axis of the connecting column 600 on the second joint 300 is perpendicular to the sliding direction of the second joint 300. Two through connecting holes 610 are formed at both ends of the transmission piece 400. The two connecting columns 600 of the first joint 200 are correspondingly embedded in the two connecting holes 610 at one end of the transmission piece 400 to realize the connection between the first joint 200 and the transmission piece 400. The two connecting columns 600 of the second joint 300 are correspondingly embedded in the two connecting holes 610 at the other end of the transmission piece 400 to realize the connection between the second joint 300 and the transmission piece 400.

[0037] The corner body 100 is provided with an inner plate 420, and the inner plate 420 is located at the inner corner of the corner body 100. The corner body 100 and the inner plate 420 are integrally provided. The top of the inner cover 800 is integrally connected to the bottom of the inner plate 420. One side of the inner plate 420 close to the corner body 100 is provided with an inner arc surface adapted to the transmission piece 400, so that a second closed channel 430 adapted to the middle of the transmission piece 400 is formed between the corner body 100 and the inner plate 420. The top of the first closed channel 810 is hermetically communicated with the bottom of the second closed channel 430. A second closed channel 430 is formed in the middle of the corner body 100 for the transmission piece 400 to slide. All the front and rear sides of the transmission piece 400 are restricted by the side walls of the second closed channel 430, which can improve the stability and reliability of the transmission piece 400 when sliding at the corner.

[0038] Side grooves 410 are provided on the front and rear sides of the first end and the second end of the corner body 100. The two side grooves 410 are respectively set corresponding to the thickness of the front and rear sides of both ends of the transmission piece 400, and the distance between the bottom walls of the two side grooves 410 is adapted to the width of the transmission piece 400. Thus, when the front and rear sides of the first end and the second end of the transmission piece 400 are respectively correspondingly embedded in the side grooves 410, the sliding of the transmission piece 400 can be further made more stable and reliable. The side walls at both ends of the second closed channel 430 are smoothly transitionally communicated with the side walls of the side grooves 410 at the first end and the second end of the corner body 100.

[0039] When using this embodiment, the corner body 100 is installed at the corner of the door and window, the second joint 300 is connected to the middle lock of the door and window by transmission, and the first joint 200 is connected to the lock on the upper or lower side of the door and window by transmission. When the lock in the middle of the door and window moves, the second joint 300 can be driven to slide longitudinally, and the first joint 200 at one end of the transmission plate 400 can be driven to move to realize the movement of the lock on the upper or lower side of the door and window, and then the opening and locking of the multi-sided lock points of the door and window can be realized. It should be noted that in order to realize the corner transmission, the transmission plate 400 is made of a bendable material such as a steel sheet. The middle part of the transmission plate 400 is guided by the closed second closed channel 430, and at the same time, the two sides of the two ends of the transmission plate 400 are also respectively restricted by the side grooves 410 on both sides to prevent the transmission plate 400 from shaking during the transmission process, which can ensure the transmission stability and reliability of the transmission plate 400, and then ensure the stability of the sliding displacement range of the first joint 200, and ensure the reliability of opening and locking the upper and lower lock points of the door and window.

[0040] The height of the connecting column 600 is greater than the depth of the corresponding connecting hole 610, so that the connecting column 600 protrudes a part after passing through the connecting hole 610. A slide groove 620 is provided at the bottom of the first end and the left side of the second end of the corner body 100. The width of the slide groove 620 is the same as the width of the connecting column 600, and the protruding part of the connecting column 600 after passing through the connecting hole 610 can just be embedded in the slide groove 620, so as to ensure the connection stability between the connecting column 600 and the transmission plate 400, that is, to ensure the stability of the connection between the first joint 200 and the second joint 300 and the transmission plate 400.

[0041] To further improve the connection reliability between the drive piece 400 and the first joint 200, preferably, a relief groove 510 is provided at the first end of the corner body 100. The relief groove 510 is located at the uppermost position of the corner body 100, that is, the side groove 410 is located between the relief groove 510 and the first guide groove 110, and the bottom of the relief groove 510 is communicated with the side groove 410. A plug 500 is provided at the first end of the corner body 100, and the plug 500 can be inserted into the relief groove 510 from one end of the relief groove 510. A clamping groove 530 is provided at the top of the first end of the corner body 100 and corresponding to the relief groove 510, and the clamping groove 530 penetrates through the top of the first end of the corner body 100. A clamping block 520 is integrally provided at the top of the plug 500. The side of the clamping block 520 close to the side where the plug 500 is inserted into the relief groove 510 is provided as an inclined surface. Thus, when the plug 500 is inserted into the relief groove 510, the clamping block 520 can be extruded by itself or the corner body 100 under the guiding action of the inclined surface, so that the clamping block 520 can be embedded in the clamping groove 530. When assembling the first joint 200 and the drive piece 400, when the drive piece 400 slides to the limit position close to the first end of the corner body 100, the end of the drive piece 400 is just located below the relief groove 510. By using the space of the relief groove 510, the end of the drive piece 400 can be bent, the first joint 200 can be inserted into the first end of the corner body 100, and the connecting column 600 can be inserted into the connecting hole 610 of the drive piece 400 to complete the connection between the first joint 200 and the drive piece 400. Then, the plug 500 is inserted into the relief groove 510. At this time, the clamping block 520 is clamped in the clamping groove 530, which can fix the position of the plug 500, facilitate the installation and disassembly of the plug 500. At the same time, the plug 500 can limit the deformation of the drive piece 400 during the transmission force, so as to prevent the drive piece 400 from detaching from the first joint 200, thereby ensuring the stable connection between the first joint 200 and the drive piece 400.

[0042] A through hole 130 is provided at the top of the first end of the corner body 100. The through hole 130 is arranged within the sliding range corresponding to the first joint 200, that is, during the sliding process of the first joint 200 at the first end of the corner body 100, the first joint 200 can slide to a position below the through hole 130, so that the connecting column 600 at the top of the first joint 200 can be exposed through the through hole 130.

[0043] When assembling the first joint 200, the second joint 300 and the transmission piece 400, first pass the connecting column 600 on one side of the second joint 300 through the connecting hole 610 at one end of the transmission piece 400, and then upset the connecting column 600 of the second joint 300 to rivet the second joint 300 and the transmission piece 400, ensuring the connection stability between the second joint 300 and the transmission piece 400. At this time, pass the transmission piece 400 into the second closed channel 430 from the second end of the corner body 100, so that the other end of the transmission piece 400 passes through to the second end of the corner body 100. Use the space of the relief groove 510 to bend the transmission piece 400, insert the first joint 200 into the first guide groove 110, and then embed the connecting hole 610 at the other end of the transmission piece 400 on the connecting column 600 of the first joint 200, so that the transmission piece 400 can be connected to the first joint 200. Then embed the plug 500 into the relief groove 510, and the locking block 520 is clamped in the locking groove 530. Move the first joint 200 to the position below the through hole 130, so that the connecting column 600 of the first joint 200 is exposed. At this time, the connecting column 600 of the first joint 200 can be upset, so that the first joint 200 and the transmission piece 400 are riveted, and the connection between the first joint 200 and the transmission piece 400 is stabilized.

[0044] For the convenience of positioning and installation of the corner device, preferably, an inner hole is provided on the left side of the top of the second joint 300. The inner hole accommodates an elastic member 720 and a positioning bead 700. The elastic member 720 is a helical spring. One end of the helical spring abuts against the bottom wall of the inner hole, and the other end abuts against the positioning bead 700. Two positioning grooves 710 are arranged side by side longitudinally on one side of the inner cover 800 close to the second end of the corner body 100. The positioning grooves 710 penetrate through the inner cover 800, and the two positioning grooves 710 respectively correspond to two set initial installation positions of the second joint 300. It should be noted that the initial installation position refers to that when the second joint is connected to other components, due to the influence of the installation of other components, the second joint needs to be moved to the set initial installation position before it is convenient for installation. The positioning bead 700 can slide in the inner hole. When the second joint 300 is in two initial installation positions respectively, the positioning bead is embedded in the positioning groove under the elastic force of the elastic member, which can provide a definite initial installation position for the installer and facilitate the installation operation.

[0045] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A corner gauge, characterized in that: include: A corner body, wherein a first end of the corner body is slidably provided with a first joint, and a second end of the corner body is slidably provided with a second joint; A transmission plate, wherein both ends of the transmission plate are respectively connected to the first joint and the second joint, the second joint comprises a rod body and second sliders arranged on the front and rear sides of the rod body, the thickness of the second slider is smaller than the thickness of the rod body, and the front and rear sides of the second end of the corner body are respectively provided with second guide grooves for the second sliders on both sides to adapt and slide.

2. A cornering device according to claim 1, characterized in that: The second end of the corner body is provided with an inner cover, and a first closed channel for the shaft to slide is formed between the inner cover and the second end of the corner body.

3. A cornering device according to claim 2, characterized in that: An inner plate is disposed at the corner position of the corner body, a second closed channel for the transmission sheet to slide is formed between the corner body and the inner plate, and the second closed channel is closed and connected to the first closed channel.

4. The angle gauge according to claim 1, characterized in that: The first joint includes a body and first sliders arranged on the front and rear sides of the body, the thickness of the first slider is smaller than the thickness of the body, and the front and rear sides of the first end of the corner body are respectively provided with first guide grooves for the first sliders on both sides to adapt and slide.

5. The angler according to claim 1, characterized in that: The second sliding block is arranged close to the right side of the shaft.

6. The angle gauge according to claim 1, characterized in that: The first joint is provided with a connecting column whose axis is perpendicular to the sliding direction of the first joint, and the transmission sheet is provided with a connecting hole for the connecting column to be embedded.

7. A cornering device according to claim 6, characterized in that: The front and rear sides of the first and second ends of the corner body are both provided with side grooves for respectively limiting the front and rear sides of the transmission plate; the end of the first end of the corner body is provided with a clearance groove connected with the side groove; a plug is embedded and installed in the clearance groove; the plug is provided with a clamping block; the first end of the corner body is provided with a clamping groove for the clamping block to be embedded.

8. A cornering device according to claim 7, characterized in that: The height of the connecting column is greater than the depth of the connecting hole. The first end of the corner body is provided with a slide groove matched with the width of the connecting column. The connecting column passes through the connecting hole and is embedded in the slide groove.

9. The angler according to claim 7, characterized in that: A through hole is formed at the first end of the corner body within the sliding range corresponding to the first joint, and the through hole is used to expose the connecting column.

10. The angle gauge according to claim 1, characterized in that: The second joint is slidably provided with a positioning bead, the second end of the corner body is provided with a positioning groove corresponding to the initial installation position, and the second joint is installed with an elastic member, and the elastic member provides elastic force to embed the positioning bead into the positioning groove.

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