Shutter special-shaped groove self-locking structure

Abstract

The invention discloses a shutter special-shaped groove self-locking structure, and the structure comprises a mounting frame which is provided with a window; the blade group is rotationally arranged on the mounting frame, and a special-shaped guide groove for guiding the blade group to rotate is formed in the blade group; the rocking handle is rotationally arranged on the mounting frame and provided with a movable end, and the movable end is in sliding connection with the special-shaped guide groove; the driving part is fixed on the mounting frame, the output end of the driving part is connected with the rotating end of the rocking handle, and the driving part is used for driving the rocking handle to rotate, so that the movable end slides in the special-shaped guide groove to drive the blade group to open and close the window; the special-shaped guide groove is provided with a self-locking edge L. When the blade set is in the state of opening the window, the movable end is attached to the self-locking edge L, and the included angle alpha between the self-locking edge L and the side, close to the window, of the rocking handle connecting rod is an acute angle. If the shutter is impacted, due to the position relation between the self-locking edge L and the movable end, the blades of the blade set are limited by the rocking handle, the blades cannot be automatically closed, and self-locking of the shutter is achieved.

Description

Technical Field

[0001] The present invention relates to the field of shutter devices, and in particular to a shutter special-shaped groove self-locking structure. Background Art

[0002] In traditional shutter structures, a simple blade opening and closing method is often used, where the rotation of the blades is controlled by turning a handle or a drive device, thereby opening and closing the window.

[0003] In order to prevent the blades from blocking the window view in a shaking environment, the existing technology often fixes the blades by adding limiting parts; however, the additional limiting parts not only increase the size of the shutter, but also increase the manufacturing cost of the shutter. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a shutter special-shaped slot self-locking structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A shutter special-shaped groove self-locking structure, comprising: an installation frame, wherein the installation frame is provided with a viewing window; The blade group is rotatably mounted on the mounting frame, and the blade group is provided with a special-shaped guide groove for guiding the rotation of the blade group; A crank, rotatably mounted on the mounting frame, the crank having a movable end, the movable end being slidably connected to the special-shaped guide groove; A driving member is fixed to the mounting frame, wherein the output end of the driving member is connected to the rotating end of the crank handle, and is used to drive the crank handle to rotate so that the movable end slides in the special-shaped guide groove, thereby driving the blade assembly to open and close the window; The special-shaped guide groove is provided with a self-locking edge L. When the blade assembly is in the state of opening the window, the movable end is in contact with the self-locking edge L, and the angle α between the self-locking edge L and the side of the crank connecting rod close to the window is an acute angle.

[0006] As described above, in the shutter special-shaped groove self-locking structure, on the side close to the window, the distance from the extension line of the self-locking edge L to the rotation center B of the blade assembly gradually decreases.

[0007] As described above, in the shutter special-shaped groove self-locking structure, the movable end has only one contact point with the self-locking edge L.

[0008] In the shutter special-shaped slot self-locking structure as described above, the self-locking edge L is a straight edge.

[0009] As described above, the shutter special-shaped groove self-locking structure, the blade group also includes a clearance groove connected to the special-shaped guide groove, the clearance groove is arranged adjacent to the self-locking edge L, when the blade group is in the state of opening the window, the clearance groove is adjacent to the rotation center B of the blade group and the window.

[0010] As described above, in the shutter special-shaped groove self-locking structure, the special-shaped guide groove is a parallelogram, the clearance groove is a semicircular, and the clearance groove is located at the short side of the parallelogram and is connected to a hypotenuse of the parallelogram.

[0011] As described above, in the shutter special-shaped groove self-locking structure, when the crank handle rotates, the distance between the movable end and the rotation center B of the blade group changes from far to near and from near to far. When the distance between the movable end and the rotation center B of the blade group is the smallest, the movable end is located in the yield groove.

[0012] In the shutter special-shaped groove self-locking structure as described above, the movable end is cylindrical, and the length of the locking edge L is greater than the radius of the movable end and smaller than the diameter of the movable end.

[0013] As described above, in the shutter special-shaped groove self-locking structure, one corner of the special-shaped guide groove is a contact angle. When the blade assembly is in a state of closing the window, the movable end contacts two sides of the contact angle.

[0014] The shutter special-shaped slot self-locking structure as described above, wherein the blade group includes a first blade group and a second blade group that are centrally symmetrically arranged with the center of the window as the center of symmetry, and the first blade group and the second blade group have the same structure; The first blade group includes a first blade and a second blade stacked in sequence on the mounting frame, and the special-shaped guide groove of the second blade is larger than the special-shaped guide groove of the second blade.

[0015] The beneficial effects of the present invention are: The mounting frame in the present invention serves as a structure for fixing various components, and the driving member drives the crank to rotate, and the movable end of the crank slides in the special-shaped guide groove of the blade group to drive the blade group to open and close the window; the angle α between the self-locking edge L on the special-shaped guide groove and the side of the crank connecting rod close to the window is an acute angle. When the blade group is in the state of opening the window, the movable end is in contact with the self-locking edge L; at this time, if the shutter is impacted, due to the positional relationship between the self-locking edge L and the movable end, the blades of the blade group are limited by the crank, so that the relative position of the blade group is fixed. Therefore, when the shutter opening and closing state is subjected to high external impact, the blade group does not switch to the window closing state, so that the blades cannot close autonomously, thereby realizing a self-locking shutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 Schematic diagram of the shutter's special-shaped slot self-locking structure window in the open state in this embodiment; Figure 2 yes Figure 1 The shutter special-shaped slot self-locking structure omits a portion of the schematic diagram of the window opening state of the mounting frame; Figure 3 yes Figure 2 A magnified view of the structure of part A; Figure 4 yes Figure 1 The shutter special-shaped slot self-locking structure omits a schematic diagram of the window closed state of the mounting frame; The reference numerals are as follows: Mounting frame 1 , slot 121 , viewing window 13 , blade assembly 2 , special-shaped guide groove 31 , clearance groove 32 , self-locking edge L, crank handle 4 , movable end 41 , driving member 5 . DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0019] Reference Figures 1 to 4 , a shutter special-shaped slot self-locking structure, comprising: a mounting frame 1, the mounting frame 1 is provided with a window 13, the mounting frame 1 is used as a structure for fixing the following parts; The blade group 2 is rotatably mounted on the mounting frame 1, and the blade group 2 is provided with a special-shaped guide groove 31 for guiding the rotation of the blade group 2; A crank 4 is rotatably mounted on the mounting frame 1 , and has a movable end 41 slidably connected to the special-shaped guide groove 31 ; A driving member 5 is fixed to the mounting frame 1 , and an output end of the driving member 5 is connected to the rotating end of the crank 4 , for driving the crank 4 to rotate so that the movable end 41 slides in the special-shaped guide groove 31 , thereby driving the blade assembly 2 to open and close the window 13 ; The special-shaped guide groove 31 is provided with a self-locking edge L. When the blade assembly 2 is in the state of opening the window 13, the movable end 41 is in contact with the self-locking edge L, and the angle α between the self-locking edge L and the connecting rod of the crank handle 4 close to the window 13 is an acute angle.

[0020] Reference Figure 2 In this embodiment, the driving member 5 drives the crank handle 4 to rotate, driving the movable end 41 to swing counterclockwise in the direction of closing the window 13, thereby closing the window 13; when the blade group 2 is impacted, the blade group 2 moves toward the closing direction under the action of the impact force or the reverse force, but since the position of the crank handle 4 always remains fixed, the movable end 41 applies a friction force to the self-locking edge L in the opposite direction to the force applied to the blade group 2, thereby hindering the movement of the blade group 2; the greater the impact force applied to the blade group 2, the greater the friction force fed back by the movable end 41, and this interaction force will further prevent the blade group 2 from rotating in the opposite direction, thereby achieving stable clamping and fixation of the blade group 2 in the open state, so that the blades cannot close autonomously, and the shutter is self-locking in the open state.

[0021] In one embodiment, the distance from the extended line of the self-locking edge L to the rotation center B of the blade assembly 2 gradually decreases on the side close to the viewing window 13. That is, the inclination direction of the self-locking edge L is in the same direction as the closing direction of the blade assembly 2. On the one hand, when the movable end 41 is fixed in position, the blade assembly 2 is subjected to a force in the closing direction when it vibrates, which increases the contact area between the self-locking edge L and the movable end 41. The friction force of the movable end 41 on the blade assembly 2 is correspondingly increased, further enhancing the self-locking effect on the blade assembly 2.

[0022] In this embodiment, the movable end 41 may be in a special-shaped structure. The special-shaped movable end 41 has a larger contact surface with the self-locking edge L, thereby further improving the self-locking effect of the blade assembly 2 .

[0023] As a preferred solution, the movable end 41 has a surface with the same slope as the self-locking edge L, and the surface is in contact with the self-locking edge L.

[0024] Reference Figure 2 and Figure 3 In one embodiment, the movable end 41 has only one contact point with the self-locking edge L, which makes the layout and construction of the entire self-locking structure relatively simple, without the need for complex multi-point contact coordination. While ensuring that the self-locking structure can realize the self-locking function of the technology, it reduces the complexity of manufacturing the movable end 41.

[0025] Reference Figure 2 and Figure 3 In one embodiment, the self-locking edge L is a straight edge, and the cutting and manufacturing process is simple. During processing, only linear feeding and cutting are required, and the function and precision of the equipment are not high.

[0026] Reference Figure 2 and Figure 3 In one embodiment, the blade group 2 also includes a clearance groove 32 connected to the special-shaped guide groove 31, and the clearance groove 32 is arranged adjacent to the self-locking edge L. When the blade group 2 is in a state of opening the window 13, the clearance groove 32 is adjacent to the rotation center B of the blade group 2 and the window 13.

[0027] It can be understood that the function of the give way groove 32 is to give way to the movable end 41. Along the closing direction of the blade group 2, the movable end 41 disengages from the special-shaped guide groove 31, enters the give way groove 32, and then enters the special-shaped guide groove 31. When the movable end 41 is located in the give way groove 32, the movable end 41 has no contact with the give way groove 32. Neither the give way groove 32 nor the special-shaped guide groove 31 has any contact with the movable end 41. The movable end 41 can smoothly drive the blade group 2 to switch to the state of closing the window 13.

[0028] Reference Figure 2 and Figure 3 In one embodiment, the special-shaped guide groove 31 is a parallelogram, the clearance groove 32 is a semicircular, and the clearance groove 32 is located at the short side of the parallelogram and is connected to a hypotenuse of the parallelogram.

[0029] Specifically, the special-shaped guide groove 31 in this embodiment is a parallelogram, which is only used to illustrate that its appearance is roughly a parallelogram, and covers parallelograms whose corners are in the shape of inverted arcs.

[0030] In one embodiment, when the crank handle 4 drives the blade group 2 to change from the open window 13 state to the closed window 13 state, the distance between the movable end 41 and the rotation center B of the blade group 2 changes from far to near and from near to far. When the distance between the movable end 41 and the rotation center B of the blade group 2 is the smallest, the movable end 41 is located in the give way slot 32.

[0031] It can be understood that when the movable end 41 rotates toward the closing direction, the driving member 5 outputs power, and the power is greater than the resistance of the lock edge L to the movable end 41. The movable end 41 can move to the give way groove 32. At this time, the movable end 41 releases the restriction on the blade group 2, and the blade group 2 swings toward the closing direction under the action of gravity. As the movable end 41 continues to swing toward the closing direction, the movable end 41 is again fitted with the inner edge of the special-shaped guide groove 31. The movable end 41 and the rotation center B of the blade group 2 jointly fix the position of the blade group 2, closing the window 13.

[0032] Reference Figure 2 and Figure 3In one embodiment, the movable end 41 is cylindrical, and the length of the locking edge L is greater than the radius of the movable end 41 but less than the diameter of the movable end 41. This structure ensures that the movable end 41 and the locking edge L form stable line contact or surface contact. The cylindrical shape of the movable end 41 matches most crank handle structures on the market, making the component highly versatile.

[0033] Reference Figure 4 In one embodiment, one corner of the special-shaped guide groove 31 is a contact angle. When the blade group 2 is in a state of closing the window 13, the movable end 41 contacts both sides of the contact angle, and the blade group 2 is subjected to at least two different constraints from the movable end 41 in two directions, thereby improving the stability of the blade group 2 in the closed state and preventing the blade group 2 from shaking or deflecting due to external force.

[0034] Reference Figure 2 and Figure 4 In one embodiment, the blade group 2 includes a first blade group 21 and a second blade group 22 that are symmetrically arranged with the center D of the window 13 as the center of symmetry. The first blade group 21 and the second blade group 22 have the same structure. The first blade group 21 and the second blade group 22 cooperate to open or close the window 13; The first blade assembly 21 includes a first blade 211 and a second blade 212 sequentially stacked on the mounting frame 1 , and the special-shaped guide groove 31 of the second blade 212 is larger than the special-shaped guide groove 31 of the second blade 212 .

[0035] If the two special-shaped guide grooves 31 are the same size, the first blade 211 and the second blade 212 will not be able to achieve step-by-step control during the opening and closing process, and can only open and close with the same path and angle. That means that more space must be reserved on the mounting frame 1 for the installation of the first blade 211 and the second blade 212. The self-locking structure of this embodiment can be used in small-volume shutters. Accordingly, the space reserved for the first blade 211 and the second blade 212 is also smaller. The two special-shaped guide grooves 31 have different sizes, which can realize the swinging action of the movable end 41 once, driving the first blade 211 and the second blade 212 to move in turn. The first blade 211 and the second blade 212 cooperate with each other, each covering a part of the window 13. The volume of the blades is smaller, and accordingly, the volume of the shutter is also smaller, which is suitable for use in small-volume shutters.

[0036] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A shutter special-shaped groove self-locking structure, characterized in that: include: an installation frame, wherein the installation frame is provided with a viewing window; The blade group is rotatably mounted on the mounting frame, and the blade group is provided with a special-shaped guide groove for guiding the rotation of the blade group; A crank, rotatably mounted on the mounting frame, the crank having a movable end, the movable end being slidably connected to the special-shaped guide groove; A driving member is fixed to the mounting frame, wherein the output end of the driving member is connected to the rotating end of the crank handle, and is used to drive the crank handle to rotate so that the movable end slides in the special-shaped guide groove, thereby driving the blade assembly to open and close the window; The special-shaped guide groove is provided with a self-locking edge L. When the blade assembly is in the state of opening the window, the movable end is in contact with the self-locking edge L, and the angle α between the self-locking edge L and the side of the crank connecting rod close to the window is an acute angle.

2. The shutter special-shaped groove self-locking structure according to claim 1, characterized in that: On the side close to the viewing window, the distance from the extension line of the self-locking edge L to the rotation center B of the blade assembly gradually decreases.

3. The shutter special-shaped groove self-locking structure according to claim 2, characterized in that: There is one contact point between the movable end and the self-locking edge L.

4. The shutter special-shaped groove self-locking structure according to any one of claims 1 to 3, characterized in that: The self-locking edge L is a straight edge.

5. The shutter special-shaped groove self-locking structure according to claim 1, characterized in that: The blade assembly further includes a clearance groove connected to the special-shaped guide groove, the clearance groove is arranged adjacent to the self-locking edge L, and when the blade assembly is in a state of opening the window, the clearance groove is adjacent to the rotation center B of the blade assembly and the window.

6. The shutter special-shaped groove self-locking structure according to claim 5, characterized in that: The special-shaped guide groove is a parallelogram, the clearance groove is a semicircle, and the clearance groove is located at the short side of the parallelogram and is connected to a hypotenuse of the parallelogram.

7. The shutter special-shaped groove self-locking structure according to claim 5, characterized in that: When the crank drives the blade group to change from an open window state to a closed window state, the distance between the movable end and the rotation center B of the blade group changes from far to near and from near to far. When the distance between the movable end and the rotation center B of the blade group is the smallest, the movable end is located in the give way slot.

8. The shutter special-shaped groove self-locking structure according to claim 1, characterized in that: The movable end is cylindrical, and the length of the locking edge L is greater than the radius of the movable end and smaller than the diameter of the movable end.

9. The shutter special-shaped groove self-locking structure according to claim 1, characterized in that: One corner of the special-shaped guide groove is a contact angle. When the blade assembly is in a state of closing the window, the movable end contacts two sides of the contact angle.

10. The shutter special-shaped groove self-locking structure according to claim 1, characterized in that: The blade group includes a first blade group and a second blade group that are centrally symmetrically arranged with the center of the window as the symmetry center, and the first blade group and the second blade group have the same structure; The first blade group includes a first blade and a second blade stacked in sequence on the mounting frame, and the special-shaped guide groove of the second blade is larger than the special-shaped guide groove of the second blade.

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