Aluminum alloy door and window convenient for lighting adjustment

Abstract

The utility model relates to the technical field of aluminum alloy doors and windows, and discloses an aluminum alloy door and window convenient to adjust lighting, which comprises a mounting frame, a sunshade curtain electric control adjusting part and a door and window locking part, and a door and window upper slide rail and a door and window lower slide rail are respectively and fixedly mounted on the inner wall of the mounting frame. The motor drives the rotating rod and the winding roller to rotate, the winding and unwinding degree of the window shade can be controlled, and a user can adjust the position of the window shade at any time according to actual requirements, so that indoor lighting adjustment is achieved, whether complete shading is needed to create a private space or partial shading is needed to adjust light intensity can be easily achieved, and the indoor lighting adjustment effect is good. The friction force between the winding roller and the window shade is increased through the grinding patterns formed in the circumference of the outer wall of the winding roller at equal intervals, it is guaranteed that the window shade is stable and does not slide in the winding and unwinding process, the lighting adjustment accuracy is improved, the window shade can be neatly stored when not used through the arrangement of the window shade storage shell, and the use is convenient. And the shading curtain is prevented from being damaged due to long-term exposure.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminium alloy door and window technical field, concretely is an aluminium alloy door and window convenient for adjusting lighting. BACKGROUND

[0002] In today's construction industry, aluminium alloy doors and windows are widely used due to their many notable advantages. These advantages include their aesthetic appearance, durability in use, and resistance to corrosion from various environmental factors. Aluminium alloy materials not only provide the modern appearance required for contemporary architecture, but also maintain their structural integrity and stability over long periods of use. In addition, aluminium alloy doors and windows can still maintain their original performance and appearance when faced with harsh weather and chemical erosion, thereby greatly extending their service life. It is precisely due to these comprehensive advantages that aluminium alloy doors and windows have become an indispensable part of the construction field.

[0003] However, the existing aluminium alloy doors and windows have certain limitations in terms of lighting adjustment. Typically, users can only adjust indoor lighting by manually operating curtains and other means. This method is not only inconvenient to operate, but also difficult to achieve precise lighting adjustment. Therefore, it is particularly important to develop an aluminium alloy door and window that is convenient for adjusting lighting, improves the convenience of use and the precision of lighting adjustment of aluminium alloy doors and windows, and enhances the locking safety of doors and windows. SUMMARY

[0004] The utility model aims at providing an aluminium alloy door and window convenient for adjusting lighting to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an aluminium alloy door and window convenient for adjusting lighting, comprising a mounting frame, a sunshade curtain electric control adjusting part, and a door and window locking part, the inner wall of the mounting frame is fixedly installed with an upper door and window sliding rail and a lower door and window sliding rail respectively; the sunshade curtain electric control adjusting part is arranged inside the mounting frame; the door and window locking part is arranged inside the mounting frame.

[0006] Preferably, the sunshade curtain electric control adjusting part specifically comprises: a window frame one arranged inside the mounting frame; a window frame two arranged inside the mounting frame; and limiting blocks fixedly installed on the inner walls of the upper door and window sliding rail and the lower door and window sliding rail. The upper door and window sliding rail and the lower door and window sliding rail provide a stable track for the movement of the door and window. The cooperation of the sliding block and the sliding rail enables the window frame one and the window frame two to smoothly slide during opening and closing, without jamming or blocking.

[0007] Preferably, the outer wall of the window frame one and the window frame two is fixedly installed with a sliding block, the inner wall of the window frame one and the window frame two is fixedly connected with a sunshade curtain storage shell, the sliding block is slidably connected with the upper sliding rail and the lower sliding rail of the door and window respectively, the inside of the window frame one and the window frame two is fixedly installed with a light glass, the inner wall of the window frame one and the window frame two is fixedly installed with a partition plate, and the partition plate is fixedly installed with a fixed plate between the inner wall of the window frame one and the window frame two.

[0008] Preferably, the top of the fixed plate is provided with a motor, the motor is fixedly installed between the partition plate and the inner wall of the window frame one and the window frame two, the output end of the motor is fixedly connected with a rotating rod, the other end of the rotating rod is movably penetrated through the outer wall of the partition plate and extends to the inside of the window frame one and the window frame two, the other end of the rotating rod is rotatably connected with a positioning block two, the positioning block two is fixedly installed on the inner wall of the window frame one and the window frame two respectively, and the outer wall of the rotating rod is fixedly sleeved with a winding roller, and the outer wall of the winding roller is circumferentially and equidistantly provided with a grinding line. The motor can provide stable and accurate power output, the rotating speed of the winding roller can be accurately controlled through the connection with the rotating rod, the sunshade curtain is more convenient to operate, the sunshade curtain can be adjusted to a suitable position according to actual needs, and the light collection is adjusted.

[0009] Preferably, the outer wall of the winding roller is provided with a sunshade curtain, the outer wall of the sunshade curtain storage shell is fixedly installed with a fixed block, the inner wall of the fixed block is fixedly installed with a positioning block, the positioning blocks are rotatably connected with a rotating shaft, and the outer wall of the rotating shaft is sleeved with a roller. The roller is provided, and the winding and unwinding of the sunshade curtain is smoothly guided. When the winding roller rotates to release the sunshade curtain, the sunshade curtain can be stably unfolded under the support and guidance of the roller, so that the sunshade curtain is not jammed, twisted or folded irregularly.

[0010] Preferably, the door and window locking part comprises a locking groove formed in the window frame one and a clamping rod provided on the outer wall of the window frame two, and one end of the clamping rod is fixedly connected with the fixed plate.

[0011] Preferably, the other end of the clamping rod is fixedly installed with a fixed head, the inner wall of the locking groove is provided with a rectangular sliding groove, the inner wall of the rectangular sliding groove is equidistantly provided with a circular sliding groove, and the outer wall of the fixed plate is fixedly installed with a lifting rod sliding plate.

[0012] Preferably, the lifting rod slide is provided with a sliding groove, the sliding groove is matched with a rectangular sliding groove, a sliding rod is slidably connected in the circular sliding groove, a trapezoidal clamping plate is fixedly connected to the other end of the sliding rod, the trapezoidal clamping plate is slidably connected with the rectangular sliding groove, a handle is fixedly connected to the outer wall of the trapezoidal clamping plate and slidably connected with the sliding groove, a spring is movably sleeved on the outer wall of the sliding rod, one end of the spring is fixedly connected with the inner wall of the rectangular sliding groove, and the other end of the spring is fixedly connected with the trapezoidal clamping plate.

[0013] The utility model provides a kind of aluminum alloy door and window of being convenient for adjusting lighting.

[0014] (1), the utility model discloses a motor drives rotating rod and winding roller rotation, can control the degree of retracting of sunshade, user can according to actual demand, adjust the position of sunshade at any time, to realize the adjustment of indoor lighting, whether it needs to be completely shaded to create private space, or partial shading to adjust light intensity, can be easily realized, the circumferential equidistance of the outer wall of winding roller is opened and is provided with abrasive grain, which increases the friction between sunshade, ensures that sunshade is stable and does not slip during retracting, improves the accuracy of light adjustment, the setting of sunshade storage shell makes sunshade neatly stored when not in use, avoids sunshade from being damaged due to long-term exposure.

[0015] (2), the utility model discloses that door and window locking part can firmly lock window frame one and window frame two together, effectively prevent window from being opened accidentally under external force, improve the security of window, whether in windy weather or be subjected to accidental impact, can ensure that window keeps closed state, protect indoor personnel and property safety, the cooperation design of clamping rod and locking groove makes locking structure more stable, the fixed head of clamping rod one and trapezoidal clamping plate in locking groove and other components interact, form multiple locking mechanism, enhance the wind resistance of window and anti-theft performance, the operation of locking part is simple and convenient, through handle, trapezoidal clamping plate can be easily controlled in rectangular sliding groove and circular sliding groove, realize the quick locking and unlocking of window, user need not use complicated tool or carry out tedious operation, can easily complete the opening and closing and locking of window. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure front view perspective drawing of the utility model;

[0017] Figure 2 It is the sunshade electric control adjusting part partial view of the utility model;

[0018] Figure 3 It is the partial view of the sunshade curtain storage shell of the utility model;

[0019] Figure 4 It is the partial view of the sunshade curtain storage shell of the utility model Figure 3 It is the enlarged structural schematic view of A in the middle;

[0020] Figure 5 It is the partial view of the trapezoidal clamping plate of the utility model.

[0021] In the figure: 1 installation frame, 2 door and window lower slide rail, 3 sunshade curtain electric control adjusting part, 311 window frame one, 312 window frame two, 313 sliding block, 314 roller, 315 positioning block, 316 limiting block, 317 partition plate, 318 sunshade curtain storage shell, 319 winding roller, 3111 motor, 3112 rotating rod, 3113 sunshade curtain, 3114 fixed block, 3115 light glass, 3116 fixed plate, 3117 positioning block two, 3118, 4 door and window locking part, 411 locking groove, 412 rectangular slide groove, 413 lifting rod slide plate, 414 circular slide groove, 415 trapezoidal clamping plate, 416 handle, 417 slide rod, 418 spring, 419 clamping rod, 4111 fixed head. DETAILED DESCRIPTION

[0022] 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 scope of protection of the utility model.

[0023] Examples of the described embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation on the utility model.

[0024] Embodiment one: the preferred embodiment of the aluminum alloy door and window convenient for adjusting lighting provided by the utility model is as shown in the figure Figures 1-5 As shown in the figure: an aluminum alloy door and window convenient for adjusting lighting, comprising an installation frame 1, a sunshade curtain electric control adjusting part 3, a door and window locking part 4, the inner wall of the installation frame 1 is fixedly installed with a door and window upper slide rail 5 and a door and window lower slide rail 2 respectively; the sunshade curtain electric control adjusting part 3 is arranged inside the installation frame 1; the door and window locking part 4 is arranged inside the installation frame 1.

[0025] The electric control adjusting part 3 of the sunshade curtain specifically comprises: a window frame one 311 arranged inside the mounting frame 1; a window frame two 312 arranged inside the mounting frame 1; and limiting blocks 316 fixedly installed on the inner walls of the upper and lower sliding rails 5 and 2 of the door and window respectively.

[0026] The outer walls of the window frame one 311 and the window frame two 312 are fixedly installed with sliding blocks 313, the inner walls of the window frame one 311 and the window frame two 312 are fixedly connected with a sunshade curtain storage shell 318, the sliding blocks 313 are slidingly connected with the upper and lower sliding rails 5 and 2 of the door and window respectively, the inner parts of the window frame one 311 and the window frame two 312 are fixedly installed with light-gathering glasses 3115, the inner walls of the window frame one 311 and the window frame two 312 are fixedly installed with partitions 317, and the partitions 317 are fixedly installed with fixed plates 3116 between the inner walls of the window frame one 311 and the window frame two 312.

[0027] The top of the fixed plate 3116 is provided with a motor 3111 fixedly installed between the partition 317 and the inner walls of the window frame one 311 and the window frame two 312, the output end of the motor 3111 is fixedly connected with a rotating rod 3112, the other end of the rotating rod 3112 is movably penetrated through the outer wall of the partition 317 and extends into the interior of the window frame one 311 and the window frame two 312, the other end of the rotating rod 3112 is rotatably connected with a positioning block two 3117 fixedly installed on the inner walls of the window frame one 311 and the window frame two 312, the outer wall of the rotating rod 3112 is fixedly sleeved with a winding roller 319, and the outer wall of the winding roller 319 is circumferentially and equidistantly provided with grinding lines.

[0028] The outer wall of the winding roller 319 is provided with a sunshade curtain 3113, the outer wall of the sunshade curtain storage shell 318 is fixedly installed with fixed blocks 3114, the inner walls of the fixed blocks 3114 are fixedly installed with positioning blocks 315, the positioning blocks 315 are rotatably connected with a rotating shaft, and the outer wall of the rotating shaft is sleeved with a roller 314.

[0029] During the implementation of the embodiment, the motor 3111 is started, the motor 3111 is fixedly installed between the partition plate 317 and the inner walls of the window frame one 311 and the window frame two 312, the output end of the motor 3111 drives the rotating rod 3112 to rotate, the other end of the rotating rod 3112 is movably penetrated through the outer wall of the partition plate 317 and extends to the inside of the window frame one 311 and the window frame two 312, and the other end of the rotating rod 3112 is rotatably connected with the positioning block 3117, the positioning block 3117 is fixedly installed on the inner walls of the window frame one 311 and the window frame two 312 respectively, so that the rotating rod 3112 can stably rotate, when the rotating rod 3112 rotates, the winding roller 319 fixedly sleeved on the outer wall of the rotating rod 3112 rotates, the outer wall of the winding roller 319 is circumferentially and equidistantly provided with grinding lines, the friction between the winding roller 319 and the shading curtain 3113 is increased, the winding roller 319 can be used for winding and unwinding the shading curtain 3113, the winding and unwinding degree of the shading curtain 3113 can be controlled, the user can adjust the position of the shading curtain 3113 at any time according to actual needs, and therefore the indoor lighting can be adjusted, whether complete shading is needed to create a private space or partial shading is needed to adjust the light intensity, the adjustment can be easily realized.

[0030] Embodiment two: on the basis of embodiment one, the preferable embodiment of the aluminum alloy door and window convenient for adjusting lighting provided by the utility model is as follows Figures 1-5 As shown in the figure: the door and window locking part 4 specifically comprises: a locking groove 411 provided on the window frame one 311; a clamping rod 419 provided on the outer wall of the window frame two 312; one end of the clamping rod 419 is fixedly connected with the fixed plate 3116.

[0031] The other end of the clamping rod 419 is fixedly installed with a fixed head 4111, the inner wall of the locking groove 411 is provided with a rectangular sliding groove 412, the inner wall of the rectangular sliding groove 412 is equidistantly provided with a circular sliding groove 414, and the outer wall of the fixed plate 3116 is fixedly installed with a lifting rod sliding plate 413.

[0032] The lifting rod sliding plate 413 is provided with a sliding groove, the sliding groove is matched with the rectangular sliding groove 412, the inner part of the circular sliding groove 414 is slidably connected with a sliding rod 417, the other end of the sliding rod 417 is fixedly installed with a trapezoidal clamping plate 415, the trapezoidal clamping plate 415 is slidably connected with the rectangular sliding groove 412, the outer wall of the trapezoidal clamping plate 415 is fixedly installed with a handle 416, the handle 416 is slidably connected with the sliding groove, the outer wall of the sliding rod 417 movably sleeved with a spring 418, one end of the spring 418 is fixedly connected with the inner wall of the rectangular sliding groove 412, and the other end of the spring 418 is fixedly connected with the trapezoidal clamping plate 415.

[0033] In the embodiment, the window frame two 312 is pushed to move the clamping rod 419 to the locking groove 411, one end of the clamping rod 419 is fixedly connected with the fixed plate 3116, and the other end is fixedly installed with a fixed head 4111. After the clamping rod 419 enters the locking groove 411, it first contacts the trapezoidal clamping plate 415, the trapezoidal clamping plate 415 is in sliding connection with the rectangular sliding groove 412, and under the pushing of the clamping rod 419, the trapezoidal clamping plate 415 moves to the direction of the circular sliding groove 414. When the trapezoidal clamping plate 415 moves, the sliding rod 417 slides in the circular sliding groove 414, and the spring 418 is compressed at the same time. When the clamping rod 419 completely passes through the trapezoidal clamping plate 415, the spring 418 rebounds to push the trapezoidal clamping plate 415 to reset, clamp the fixed head 4111, realize the locking of the window frame one 311 and the window frame two 312, and firmly lock the window frame one 311 and the window frame two 312 together. It can effectively prevent the window from being opened accidentally under the action of external force, improve the safety of the window, and ensure that the window remains closed when it is windy or is accidentally hit, thereby protecting the safety of indoor personnel and property. The cooperation of the clamping rod 419 and the locking groove 411 makes the locking structure more stable.

[0034] Principle: when the light needs to be adjusted, start the motor 3111, the motor 3111 is fixedly installed between the partition 317 and the inner wall of the window frame one 311 and the window frame two 312, the output end drives the rotating rod 3112 to rotate, the other end of the rotating rod 3112 is movably penetrated through the outer wall of the partition 317 and extends to the inside of the window frame one 311 and the window frame two 312, and the other end of the rotating rod 3112 is rotatably connected with the positioning block 3117, the positioning block 3117 is fixedly installed on the inner wall of the window frame one 311 and the window frame two 312 respectively, to ensure that the rotating rod 3112 rotates stably, when the rotating rod 3112 rotates, the winding roller 319 fixedly sleeved on the outer wall thereof rotates, the outer wall of the winding roller 319 is circumferentially and equidistantly provided with a plurality of grinding lines, to increase the friction between the winding roller 319 and the shading curtain 3113, the winding roller 319 rotates to wind or unwind the shading curtain 3113, the shading curtain 3113 is arranged on the outer wall of the winding roller 319, when the winding roller 319 winds the shading curtain 3113, the light entering the room is reduced, to achieve the purpose of adjusting the light, when the shading curtain 3113 is unwound, the indoor lighting is increased, the outer wall of the window frame one 311 and the window frame two 312 is fixedly installed with the sliding block 313, the sliding block 313 is slidably connected with the upper door and window sliding rail 5 and the lower door and window sliding rail 2 respectively, so that the window frame one 311 and the window frame two 312 can smoothly move in the mounting frame 1, the inner wall of the window frame one 311 and the window frame two 312 is fixedly connected with the sunshade curtain storage shell 318, for storing the shading curtain 3113, the outer wall of the sunshade curtain storage shell 318 is fixedly installed with the fixed block 3114, the inner wall of the fixed block 3114 is fixedly installed with the positioning block 315, the positioning block 315 is rotatably connected with the rotating shaft, the rotating shaft is sleeved with the roller 314, the roller 314 assists the winding and unwinding process of the shading curtain 3113, to make it more smooth, when the window frame one 311 and the window frame two 312 need to be locked, the window frame two 312 is pushed, the clamping rod 419 moves to the locking groove 411, one end of the clamping rod 419 is fixedly connected with the fixed plate 3116, the other end is fixedly installed with the fixed head 4111, after the clamping rod 419 enters the locking groove 411, it first contacts the trapezoidal clamping plate 415, the trapezoidal clamping plate 415 is slidably connected with the rectangular sliding groove 412, under the pushing of the clamping rod 419, the trapezoidal clamping plate 415 moves to the circular sliding groove 414, when the trapezoidal clamping plate 415 moves, the sliding rod 417 slides in the circular sliding groove 414, at the same time, the spring 418 is compressed, after the clamping rod 419 completely passes through the trapezoidal clamping plate 415, the spring 418 rebounds to push the trapezoidal clamping plate 415 to reset, to clamp the fixed head 4111, to achieve the locking of the window frame one 311 and the window frame two 312, when unlocking is needed, the trapezoidal clamping plate 415 is pulled through the handle 416, to make it move to the circular sliding groove 414 again, to release the restriction on the clamping rod 419, so that the window frame two 312 can be separated from the window frame one 311, the handle 416 is slidably connected with the sliding groove, the sliding groove on the lifting rod sliding plate 413 is matched with the rectangular sliding groove 412, to ensure the stable movement of the handle 416.

[0035] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] Finally, it should be noted that the above-described embodiments are merely possible examples of implementing the present application, and thus are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can still be modified by those skilled in the art, or some technical features thereof can be replaced equivalently. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aluminum alloy door and window that facilitates light control, comprising a mounting frame (1), an electric adjustment unit for the sunshade curtain (3), and a door and window locking unit (4), characterized in that, The inner wall of the mounting frame (1) is fixedly installed with the upper sliding rail (5) and the lower sliding rail (2); the electric control adjustment part (3) of the sunshade curtain is located inside the mounting frame (1); the door and window locking part (4) is located inside the mounting frame (1).

2. The aluminum alloy door and window for easy light adjustment according to claim 1, characterized in that, The electric control adjustment unit (3) of the sunshade curtain specifically includes: Window frame 1 (311) is installed inside the mounting frame (1); Window frame two (312) is set inside the mounting frame (1); Limiting blocks (316) are fixedly installed on the inner walls of the upper sliding rail (5) and the lower sliding rail (2) of the door and window respectively.

3. The aluminum alloy door and window for easy light adjustment according to claim 2, characterized in that, Sliding blocks (313) are fixedly installed on the outer walls of window frame one (311) and window frame two (312). A sunshade storage shell (318) is fixedly connected between the inner walls of window frame one (311) and window frame two (312). The sliding blocks (313) are slidably connected to the upper sliding rail (5) and the lower sliding rail (2) of the door and window respectively. Light-transmitting glass (3115) is fixedly installed inside window frame one (311) and window frame two (312). A partition (317) is fixedly installed on the inner walls of window frame one (311) and window frame two (312). A fixing plate (3116) is fixedly installed between the partition (317) and the inner walls of window frame one (311) and window frame two (312).

4. The aluminum alloy door and window for easy light adjustment according to claim 3, characterized in that, A motor (3111) is provided on the top of the fixed plate (3116). The motor (3111) is fixedly installed between the partition (317) and the inner walls of window frame one (311) and window frame two (312). The output end of the motor (3111) is fixedly connected to a rotating rod (3112). The other end of the rotating rod (3112) movably passes through the outer wall of the partition (317) and extends into the interior of window frame one (311) and window frame two (312). The other end of the rotating rod (3112) is rotatably connected to positioning block two (3117). Positioning block two (3117) is fixedly installed on the inner walls of window frame one (311) and window frame two (312). A winding roller (319) is fixedly sleeved on the outer wall of the rotating rod (3112). The outer wall of the winding roller (319) is equidistantly grooved.

5. An aluminum alloy door and window for easy light adjustment according to claim 4, characterized in that, The outer wall of the take-up roller (319) is provided with a light-blocking curtain (3113), the outer wall of the sunshade storage shell (318) is fixedly installed with a fixing block (3114), the inner walls of the fixing blocks (3114) are fixedly installed with positioning blocks (315), the positioning blocks (315) are rotatably connected with a rotating shaft, and the outer wall of the rotating shaft is fitted with a roller (314).

6. The aluminum alloy door and window for easy light adjustment according to claim 1, characterized in that, The door and window locking part (4) specifically includes: A locking groove (411) is provided on window frame one (311); The clamp (419) is installed on the outer wall of window frame two (312); One end of the lever (419) is fixedly connected to the fixing plate (3116).

7. An aluminum alloy door and window for easy light adjustment according to claim 6, characterized in that, The other end of the lever (419) is fixedly installed with a fixing head (4111), the inner wall of the locking groove (411) is provided with a rectangular slide groove (412), the inner wall of the rectangular slide groove (412) is provided with circular slide grooves (414) at equal intervals, and the outer wall of the fixing plate (3116) is fixedly installed with a lifting rod slide plate (413).

8. An aluminum alloy door and window for easy light adjustment according to claim 7, characterized in that, The lifting rod slide (413) has a sliding groove, which is adapted to the rectangular sliding groove (412). The circular sliding groove (414) is slidably connected to a sliding rod (417). The other end of the sliding rod (417) is fixedly installed with a trapezoidal plate (415). The trapezoidal plate (415) is slidably connected to the rectangular sliding groove (412). The outer wall of the trapezoidal plate (415) is fixedly installed with a handle (416). The handle (416) is slidably connected to the sliding groove. The outer wall of the sliding rod (417) is movably fitted with a spring (418). One end of the spring (418) is fixedly connected to the inner wall of the rectangular sliding groove (412), and the other end of the spring (418) is fixedly connected to the trapezoidal plate (415).

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