Limiting type keyboard key support

Abstract

The utility model provides a limiting type keyboard key support which is used for solving the problem that in the prior art, the hinged position of an inner frame and an outer frame is not limited. The key support comprises an inner frame and an outer frame, rotating shafts are arranged on the two sides of the inner frame, rotating holes corresponding to the rotating shafts are formed in the inner side of the outer frame, limiting pins are arranged on the two sides, close to the rotating shafts, of the inner frame, the rotating holes are communicated with horizontal sliding grooves, and the horizontal sliding grooves are communicated with the top face of the outer frame through inclined sliding grooves. The limiting pin swings in the horizontal sliding groove, the width of the horizontal sliding groove is smaller than the diameter of the rotating shaft, the side wall of the limiting pin is connected with the side wall of the rotating shaft, the limiting pin is arranged on the side, close to the horizontal sliding groove, of the rotating shaft, and the center line of the horizontal sliding groove is close to the horizontal center line of the rotating hole. According to the utility model, the limiting pin swings in the limiting groove, so that the rotation angle of the rotating shaft can be effectively limited, the stroke of the key is accurately controlled, and the problem of random rotation of the inner frame relative to the outer frame is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of keys, in particular to a position-limiting keyboard key bracket. Background Art

[0002] The key bracket structure of a computer keyboard is one of the key factors that affect the service life of the keyboard and the user experience. The traditional scissor-foot key bracket structure is hinged by an outer frame and an inner frame, and has problems such as easy wear and difficult maintenance. At present, the keyboard keys include a bracket, a base plate and a keycap. The base plate and the keycap of the key are respectively hinged to the two ends of the outer frame and the inner frame, and the outer frame and the inner frame are usually hinged only in the middle. Existing key brackets usually do not have a limit function. Due to the lack of a limit function, the key's depression and rebound process are uncontrolled, resulting in inconsistent key travel, which will eventually affect the accuracy and comfort of typing. In addition, the lack of a limit function will cause the inner frame to rotate 180 degrees relative to the outer frame, resulting in the problem of the wrong installation direction of the inner frame. Utility Model Content

[0003] The utility model provides a limited keyboard key support, which solves the problem of no limit at the hinge between the inner frame and the outer frame in the prior art.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A limited keyboard key bracket comprises an inner frame and an outer frame, wherein both sides of the inner frame are provided with a rotating shaft, the inner side of the outer frame is provided with a rotating hole corresponding to the rotating shaft, and both sides of the inner frame close to the rotating shaft are provided with a limit pin, the rotating hole is connected with a horizontal slide groove, and the horizontal slide groove is connected with the top surface of the outer frame through an inclined slide groove, when the rotating shaft rotates in the rotating hole, the limit pin swings in the horizontal slide groove, the width of the horizontal slide groove is smaller than the diameter of the rotating shaft, the side wall of the limit pin is connected to the side wall of the rotating shaft, the limit pin is arranged on the side of the rotating shaft close to the horizontal slide groove, and the center line of the horizontal slide groove is close to the horizontal center line of the rotating hole.

[0006] Furthermore, a bottom plate hinge shaft is provided at one end of the outer frame hinged to the bottom plate, and inclined baffles are fixed at both ends of the bottom plate hinge shaft, and when the bottom plate hinge shaft drives the outer frame to rotate in a direction away from the bottom plate, the baffles can abut against the bottom plate. The abutment between the baffles and the bottom plate when the bottom plate hinge shaft rotates not only enhances the stability of the bracket structure, but also prevents the outer frame from being damaged due to excessive rotation during use, and can accurately control the key travel of the keyboard to ensure that the depth of each tap is consistent.

[0007] Furthermore, a rotation groove is provided at one end of the inclined slide groove connected to the horizontal slide groove, and the rotation groove allows the limit pin to rotate within a certain angle, thereby ensuring the smoothness of the rotating shaft during the rotation process.

[0008] Furthermore, the outer frame is provided with a positioning plate on the bottom surface close to the bottom plate hinge axis, and a step plate is provided at one end close to the bottom plate hinge axis, and one end of the inner frame is provided with a receiving groove for receiving the step plate. A boss can be provided on the bottom plate, and the boss is placed in the step groove on the bottom surface of the step plate. By providing the step plate, the positioning accuracy of the outer frame and the bottom plate can be further improved, ensuring the accurate installation of the keyboard key bracket.

[0009] Furthermore, the end of the inclined slide groove connected to the top surface of the outer frame is the inlet end, the width of the inlet end is greater than the diameter of the rotating shaft, and the width of the inlet end is less than the maximum distance from the stop pin to the rotating shaft. The width design of the inlet end ensures that the stop pin and the rotating shaft can only be installed in the correct direction, thereby preventing the wrong installation direction.

[0010] Furthermore, the thickness of the limit pin is greater than the length of the horizontal chute. The longer limit pin can be stably supported and limited by the side wall of the horizontal chute, thereby improving the stability of the entire structure.

[0011] Furthermore, a buffer column is fixed to one end of the inner frame and the key cap hinged, and when the inner frame and the outer frame are connected, the bottom of the buffer column abuts against the bottom plate. The buffer column can reduce the collision between the inner frame and the outer frame and reduce the generation of noise.

[0012] The beneficial effects that this technical solution can produce.

[0013] The utility model cooperates the rotating shaft of the inner frame and the rotating hole of the outer frame, and the swing of the limit pin in the limit slot, which can not only effectively limit the rotation angle of the rotating shaft, ensure the precise control of the key stroke, thereby providing a consistent tapping feel and feedback, but also avoid the random rotation of the inner frame relative to the outer frame, thereby preventing the occurrence of wrong installation direction. The baffle can limit the rotatable angle of the outer frame, and then cooperate with the rotation limit of the limit pin and the limit slot to ensure the uniform key stroke of each key. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a partial three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 The front view shown;

[0017] Figure 3It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 4 for Figure 1 The exploded three-dimensional structure diagram shown;

[0019] Figure 5 for Figure 1 A local enlarged schematic diagram of the middle A;

[0020] Figure 6 for Figure 2 A local enlarged schematic diagram of point B in the middle.

[0021] Among them: 1. inner frame, 2. outer frame, 3. rotating shaft, 4. rotating hole, 5. limiting pin, 6. horizontal slide groove, 7. inclined slide groove, 8. bottom plate hinge axis, 9. baffle, 10. rotating groove, 11. positioning plate, 12. step plate, 13. receiving groove, 14. inlet end. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , 4 -6, the embodiment of the utility model provides a limited keyboard key support, including an inner frame 1 and an outer frame 2, both sides of the inner frame 1 are provided with a rotating shaft 3, the inner side of the outer frame 2 is provided with a rotating hole 4 corresponding to the rotating shaft 3, and both sides of the inner frame 1 close to the rotating shaft 3 are provided with a limit pin 5, the rotating hole 4 is connected with a horizontal slide 6, and the horizontal slide 6 is connected with the top surface of the outer frame 2 through an inclined slide 7. When the rotating shaft 3 rotates in the rotating hole 4, the limit pin 5 swings in the horizontal slide 6, the width of the horizontal slide 6 is smaller than the diameter of the rotating shaft 3, the side wall of the limit pin 5 is connected to the side wall of the rotating shaft 3, the limit pin 5 is arranged on the side of the rotating shaft 3 close to the horizontal slide 6, and the center line of the horizontal slide 6 is close to the horizontal center line of the rotating hole 4. The outer frame 2 is a plastic material with certain elastic deformation characteristics, and the material of the outer frame 2 can increase the width of the horizontal slide 6 to adapt to the diameter of the rotating shaft 3, and provide necessary resistance after the rotating shaft 3 enters the rotating hole 4. The inner frame 1 and the outer frame 2 can be made of integral injection molding, and the connection between the side wall of the limit pin 5 and the side wall of the rotating shaft 3 is convenient for injection molding production.

[0024] During use, the rotating shaft 3 is moved along the inclined slide groove 7 and the horizontal slide groove 6. Since the width of the horizontal slide groove 6 is smaller than the diameter of the rotating shaft 3, when the rotating shaft 3 enters the horizontal slide groove 6, it will support the outer frame 2 at the horizontal slide groove 6, so that the width of the horizontal slide groove 6 increases. Finally, the rotating shaft 3 is placed in the rotating hole 4 under the push of external force, and the swing of the limit pin 5 in the limit groove is used to limit the rotation angle of the rotating shaft 3, thereby limiting the relative rotation angle of the inner frame 1 and the outer frame 2, so as to achieve the effect of limiting the key travel. By bringing the horizontal slide groove 6 close to the center of the rotating hole 4, it can be ensured that the rotating shaft 3 is in more uniform contact with the rotating hole 4 when rotating, reducing the resistance of the rotating shaft 3 when sliding in the slide groove, and improving the response speed and sensitivity of the key. When the center of the horizontal slide 6 is located on the side of the rotating hole 4 close to the bottom surface of the outer frame 2, the thickness of the outer frame 2 on the horizontal slide 6 will increase accordingly, making the installation resistance larger, but ensuring that the shaft 3 is more stable. When the center of the horizontal slide 6 is located on the side of the rotating hole 4 close to the top surface of the outer frame 2, the thickness of the outer frame 2 on the horizontal slide 6 will decrease accordingly, reducing the installation resistance and facilitating installation, but the shaft 3 will fall off more easily, increasing the risk of the shaft 3 getting stuck, so the center line of the horizontal slide 6 needs to be close to the horizontal center line of the rotating hole 4. The limit pin 5 is connected to the side wall of the shaft 3 to improve the structural strength of the limit pin 5, prevent the limit pin 5 from breaking, and ensure the stability and reliability of the bracket during long-term use.

[0025] like Figure 1 , 4 -6, the end of the outer frame 2 hinged with the bottom plate is provided with a bottom plate hinge shaft 8, and the two ends of the bottom plate hinge shaft 8 are fixed with inclined baffles 9. When the bottom plate hinge shaft 8 drives the outer frame 2 to rotate in the direction away from the bottom plate, the baffle 9 can abut against the bottom plate. A fixed plate can be set on the bottom plate. When the baffle 9 rotates, the inclined surface of the baffle 9 abuts against the side of the fixed plate to achieve the angle fixation of the baffle 9. As long as the bottom plate is rotated, the bevel of the baffle 9 is limited to ensure that the rotation angle of the outer frame 2 is all right. The baffle 9 can limit the rotatable angle of the outer frame 2, and then cooperate with the rotation limit of the inner frame 1 and the outer frame 2 to accurately ensure the uniformity of the key travel. When the keyboard is restored after being pressed, the baffle 9 can prevent the outer frame 2 from excessively rotating, protect the keyboard structure from damage, and provide additional stability. By adjusting the angle and size of the baffle 9 during the injection molding production process, the key travel and touch of the keyboard can be changed to meet the needs of different users.

[0026] like Figure 1 , 2As shown in 3-6, a rotation groove 10 is provided at one end of the inclined slide groove 7 connected to the horizontal slide groove 6. The rotation groove 10 is an arc-shaped groove whose axis is parallel to the axis of the rotating hole 4. The rotation groove 10 provides sufficient rotation space for the limit pin 5 to ensure that the limit pin 5 is not interfered during the rotation process, so that the operation of the keyboard keys is smoother and smoother, and the rotation shaft 3 is prevented from getting stuck in an inappropriate position, thereby reducing input errors caused by misoperation. The rotation groove 10 avoids direct wear of the limit pin 5 by the horizontal slide groove 6, thereby extending the service life. By avoiding interference and providing sufficient rotation space, problems and difficulties that may be encountered during installation and maintenance are reduced.

[0027] like Figure 3 , 4 As shown, the bottom surface of the outer frame 2 near the bottom plate hinge shaft 8 is provided with a positioning plate 11, and one end near the bottom plate hinge shaft 8 is provided with a step plate 12, and one end of the inner frame 1 is provided with a receiving groove 13 that can accommodate the step plate 12. A boss can be provided on the bottom plate, and the boss is placed in the step groove on the bottom surface of the step plate 12. The positioning plate 11 on the bottom surface of the hinge shaft can facilitate the installation and positioning of the outer frame 2 and the bottom plate, thereby improving the assembly efficiency of the keyboard, and the hinge shaft can also be thickened to ensure the structural strength of the baffle 9 and the bottom plate hinge shaft 8, thereby enhancing the durability and stability of the keyboard. In addition, the step plate 12 can facilitate the distinction of the installation direction of the outer frame 2 to prevent the increase in workload caused by the wrong installation. By providing the receiving groove 13, it can be ensured that the inner frame 1 and the outer frame 2 remain level, and the stability of the keyboard keys when pressed and released can be ensured, providing a more stable and consistent key experience, and the inner frame 1 can be engaged with the outer frame 2 after the keyboard is pressed, ensuring that the connection between the outer frame 2 and the bottom plate is more stable, and reducing shaking during use.

[0028] like Figure 5-6 As shown, one end of the inclined slot 7 connected to the top surface of the outer frame 2 is the inlet end 14, and the width of the inlet end 14 is greater than the diameter of the rotating shaft 3, and the width of the inlet end 14 is less than the maximum distance between the stop pin 5 and the rotating shaft 3. When the rotating shaft 3 and the stop pin 5 are installed along the slot, when the rotating shaft 3 is horizontally placed in the inclined slot 7, the width of the inlet end 14 is less than the maximum distance between the stop pin 5 and the rotating shaft 3, and the inlet end 14 blocks the stop pin 5 and the rotating shaft 3, so that the stop pin 5 can only enter the inclined slot 7 when facing upward or downward. When the stop pin 5 is installed upward, it is correctly installed. When the stop pin 5 is downward, the stop pin 5 is against the horizontal slot 6, so that the rotating shaft 3 cannot enter the inclined slot 7. If a rotating slot 10 is provided, the end of the stop pin 5 will be clamped in the rotating slot 10. The rotating shaft 3 cannot be installed when the stop pin 5 is limited by the rotating slot 10, thereby achieving the effect of preventing wrong installation and reducing rework and repair caused by installation errors.

[0029] like Figure 5-6As shown, the thickness of the limit pin 5 is greater than the length of the horizontal slide groove 6. The longer limit pin 5 can be used to allow the outer frame 2 at the horizontal slide groove 6 to provide a limit for the limit pin 5, and the end of the limit pin 5 can be rotated in the inclined slide groove 7, thereby increasing the rotatable angle and facilitating the installation of the rotating shaft 3. The longer limit pin 5 can also use the side wall to abut against the side wall of the horizontal slide groove 6 for limit, thereby reducing the wear of the end of the limit pin 5 and the side wall of the horizontal slide groove 6. The end of the limit pin 5 can rotate in the inclined slide groove 7, and the longer limit pin 5 is directly placed in the inclined slide groove 7 or the rotating groove 10, so that the limit pin 5 has a larger rotation angle, thereby providing a wider range of motion.

[0030] like Figure 3 As shown, a buffer column 15 is fixed to one end of the inner frame 1 hinged with the keycap. When the inner frame 1 and the outer frame 2 are connected, the bottom of the buffer column 15 abuts against the bottom plate. A rubber pad can be set at the bottom of the buffer column 15 to further improve the buffering and noise reduction effect. The existence of the buffer column 15 allows a buffering process when the inner frame 1 contacts the outer frame 2, thereby greatly reducing the generation of noise. In addition, the buffer column 15 can reduce the direct collision between the inner frame 1 and the outer frame 2, thereby achieving the effect of increasing the life of the key bracket.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A limited keyboard key support, comprising an inner frame (1) and an outer frame (2), characterized in that: A rotating shaft (3) is provided on both sides of the inner frame (1), a rotating hole (4) corresponding to the rotating shaft (3) is provided on the inner side of the outer frame (2), and a limit pin (5) is provided on both sides of the inner frame (1) close to the rotating shaft (3). The rotating hole (4) is connected with a horizontal slide groove (6), and the horizontal slide groove (6) is connected with the top surface of the outer frame (2) through an inclined slide groove (7). When the rotating shaft (3) rotates in the rotating hole (4), the limit pin (5) swings in the horizontal slide groove (6), the width of the horizontal slide groove (6) is smaller than the diameter of the rotating shaft (3), the side wall of the limit pin (5) is connected to the side wall of the rotating shaft (3), and the limit pin (5) is arranged on a side of the rotating shaft (3) close to the horizontal slide groove (6), and the center line of the horizontal slide groove (6) is close to the horizontal center line of the rotating hole (4).

2. The position-limiting keyboard key support according to claim 1, characterized in that: One end of the outer frame (2) hinged to the bottom plate is provided with a bottom plate hinge shaft (8), and inclined baffles (9) are fixed at both ends of the bottom plate hinge shaft (8). When the bottom plate hinge shaft (8) drives the outer frame (2) to rotate in a direction away from the bottom plate, the baffles (9) can abut against the bottom plate.

3. The position-limiting keyboard key support according to claim 1, characterized in that: A rotation groove (10) is provided at one end of the inclined slide groove (7) which is connected to the horizontal slide groove (6).

4. The position-limiting keyboard key support according to claim 1, characterized in that: The outer frame (2) is provided with a positioning plate (11) on its bottom surface close to the bottom plate hinge shaft (8), and a step plate (12) is provided at one end close to the bottom plate hinge shaft (8), and an accommodating groove (13) capable of accommodating the step plate (12) is provided at one end of the inner frame (1).

5. A position-limiting keyboard key support according to claim 1 or 3, characterized in that: One end of the inclined slide groove (7) connected to the top surface of the outer frame (2) is an inlet end (14), the width of the inlet end (14) is greater than the diameter of the rotating shaft (3), and the width of the inlet end (14) is less than the maximum distance from the limit pin (5) to the rotating shaft (3).

6. A position-limiting keyboard key support according to claim 1 or 3, characterized in that: The thickness of the limiting pin (5) is greater than the length of the horizontal sliding groove (6).

7. The position-limiting keyboard key support according to claim 1, characterized in that: A buffer column (15) is fixed to one end of the inner frame (1) hinged to the key cap, and when the inner frame (1) and the outer frame (2) are joined, the bottom of the buffer column (15) abuts against the bottom plate.

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