Anti-pressing mechanical and electronic double-insurance safety pin mechanism

Abstract

The invention discloses an anti-pressure mechanical and electronic double-insurance safety pin mechanism which comprises a base, a sitting and leaning frame, a backrest frame, an electric push rod and a pull rod, a connecting seat is arranged on the backrest frame corresponding to the pull rod, a clamping groove is formed in the connecting seat, a clamping column is arranged on the pull rod corresponding to the clamping groove, an opening for the clamping column to slide in is formed in the clamping groove, and the clamping column is connected with the electric push rod. The connecting base is provided with a clamping column and a clamping groove in a hinged mode, the connecting base is provided with an overturning frame in a hinged mode, one end of the overturning frame extends to one side of the opening to form a blocking piece for limiting the clamping column to be separated from the clamping groove, and the connecting base is further provided with an elastic adjusting structure used for driving the blocking piece to keep the initial position. When a small animal or a child is pressed, the positions of the clamping column and the clamping groove can be pulled out of the clamping groove due to resistance, once the preset force is exceeded, the clamping column can be pulled out of the clamping groove, and the tripping phenomenon is generated, so that the backrest frame is prevented from further lying down, and the safety coefficient is higher.

Description

Technical Field

[0001] The invention relates to the technical field of massagers, and in particular to a pressure-proof mechanical and electronic double-safety safety pin mechanism. Background Art

[0002] In the prior art, the backrest of a massage chair can usually be laid down or stood upright, thereby realizing the switching between lying down and leaning back states. However, the space behind the massage chair cannot be observed when it is lying down. When there are small animals, children or foreign objects blocking the way, the small animals or children are easily injured. Summary of the invention

[0003] Purpose of the invention: In order to overcome the defects of the prior art, the present invention provides a pressure-proof mechanical and electronic double-safety safety pin mechanism. When a small animal or a child is pressed, the position of the card column and the card slot will be subject to resistance. Once the preset force is exceeded, the card column will be pulled out of the card slot, resulting in a disengagement phenomenon, thereby preventing the backrest from lying further down, with a higher safety factor.

[0004] The present invention discloses a pressure-proof mechanical and electronic double-safety safety pin mechanism, comprising a base, a seat frame and a backrest frame that can rotate and lie down relative to the seat frame, the base is provided with an electric push rod, and also includes a pull rod for linking with the electric push rod to pull the backrest frame to rotate and lie down relatively, characterized in that: a connecting seat is provided on the backrest frame at a position corresponding to the pull rod, a slot is provided on the connecting seat, a clamping column is provided on the pull rod at a position corresponding to the slot, an opening for the clamping column to slide into is provided on the clamping slot, and a flip frame is hingedly provided on the connecting seat, and one end of the flip frame extends to one side of the opening to form a blocking piece for limiting the clamping column from escaping from the slot, and an elastic adjustment structure for driving the blocking piece to maintain an initial position is also provided on the connecting seat, when the backrest frame is blocked from lying down, a force is applied to the matching position of the clamping column and the clamping slot, so that the clamping column can drive the blocking piece to move, so that the clamping column can escape from the slot.

[0005] The present invention is further configured as follows: the elastic adjustment structure includes a torsion spring for driving the flip frame to flip clockwise and a compression spring for driving the flip frame to flip counterclockwise, the torsion spring is arranged on the connecting seat, and one end of the torsion spring abuts against the connecting seat, and the other end abuts against the flip frame, the flip frame includes a pressing end and a lifting end, the blocking plate is arranged on the lifting end, the compression spring acts on the pressing end, and the connecting seat is also provided with an adjusting bolt for adjusting the compression amount of the compression spring, and the adjusting bolt is threadedly matched with the connecting seat.

[0006] The present invention is further configured as follows: a fall-stopping hook is provided on the flip frame below the clamping column, and a guide surface for guiding the clamping column to enter the fall-stopping hook is provided on the blocking piece.

[0007] The present invention is further configured as follows: the adjusting bolt is also provided with a limiting surface for limiting the rotation of the adjusting bolt, a clamp seat is provided on the pressing end at a position corresponding to the limiting surface, and a clamp is detachably connected to the clamp seat for cooperating with the limiting surface to limit the rotation of the adjusting bolt.

[0008] The present invention is further configured as follows: the flip frame is also provided with an abutment sheet that flips synchronously therewith, and a proximity switch is provided on the connecting seat at a position corresponding to the abutment sheet, and the proximity switch interacts with the electric push rod.

[0009] The present invention is further configured as follows: the pull rod is provided with a slide slot hole arranged along its length direction, the clamping column guide slides on the slide slot hole, and the pull rod is also provided with a buffer spring, one end of the buffer spring is fixed on the pull rod, and the other end is directly or indirectly connected to the clamping column.

[0010] A further configuration of the present invention includes a tension spring for keeping the clamping column in the open position, one end of the tension spring is fixed on the connecting seat, and the other end is fixed on the pull rod.

[0011] The present invention is further configured as follows: the blocking piece is erected on the flip frame to form a groove, the clamping column is located in the groove, and a blocking surface for limiting the clamping column from being pulled out upward is provided on the groove.

[0012] The present invention is further configured as follows: a spring sheet for limiting the connection seat from escaping from the slot is provided at a position corresponding to the card column on the connection seat, and the spring sheet is vertically arranged on one side of the opening to extend the height of one side of the slot.

[0013] A further configuration of the present invention is that a limiting rod is arranged on the connection seat above the abutting piece.

[0014] The beneficial effect of the present invention is that when the backrest is in use, when it lies down and presses on a person or an object, this position will be used as a fulcrum, so that a force will be applied to the matching position of the pull rod and the connecting seat. When the resistance reaches a certain value, the clamping column will apply a force to the blocking piece. At this time, the flip frame rotates, so that the blocking piece moves to avoid it, and the clamping column can be separated from the clamping slot, resulting in a tripping phenomenon. When the electric push rod works further, it pulls the pull rod to slide in vain, thereby preventing the backrest from lying down further, thereby achieving the effect of mechanical safety tripping. When the tripped clamping column needs to be reset, it can be The card column is slid into the card slot from the opening by manually or electrically pushing the rod backward. When the backrest is not pressed by a person or object, the pull rod moves forward to pull the connecting seat, so that the backrest can be flipped over and lie down. At this time, the inner wall of the card slot and the blocking cooperation of the blocking piece can prevent the card column from falling out of the card slot, making it more stable when pulling and setting. The blocking piece adopts an elastic adjustment structure for adjustment, which can drive the elastic adjustment structure to deform when an external force acts, so that the card column can be separated from the card slot, which can pull the backrest to lie down without affecting the normal release of the card column. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 for Figure 1 Another perspective structural diagram; Figure 4 This is a diagram showing the matching of the pull rod and the connecting seat with a fall-stopping hook of the present invention; Figure 5 This is a diagram showing the matching of the pull rod and the connecting seat with the spring sheet of the present invention; Figure 6 for Figure 4 Another perspective structural diagram; Figure 7 This is a diagram showing the matching of the pull rod and the connecting seat with a tension spring of the present invention; Figure 8 for Figure 4 Another perspective structural diagram; Fig. 9 for Figure 8 Schematic diagram of the structure after the compression spring is removed; Fig.10 for Figure 5 Enlarged view of local A; Fig.11 This is a schematic diagram of the structure of the overturning frame of the present invention; Fig.12 This is a schematic diagram of the structure of the adjusting bolt of the present invention; Fig.13 It is a schematic diagram of the pull rod structure with a slide slot hole of the present invention; Fig.14 for Figure 6 Enlarged view of part B; Fig.15 for Fig. 9 Enlarged view of part C. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings: In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0017] The present invention discloses a pressure-proof mechanical and electronic double insurance safety pin mechanism, comprising a base 1, a seat frame 2 and a backrest frame 3 that can be rotated and laid down relative to the seat frame 2, the base 1 is provided with an electric push rod 4, and also includes a pull rod 5 for pulling the backrest frame 3 to rotate and lay down relative to the electric push rod 4. In the implementation case of the present invention, a connecting seat 6 is provided on the backrest frame 3 at a position corresponding to the pull rod 5, a card slot 7 is provided on the connecting seat 6, and a card column 8 (card column 8 and card column 5) is provided at a position corresponding to the card slot 7 on the pull rod 5. The slot 7 forms a snap fit), the slot 7 is provided with an opening 9 for the card column 8 to slide into, and a flip frame 10 is hingedly provided on the connecting seat 6, and one end of the flip frame 10 extends to one side of the opening 9 to form a blocking piece 11 that limits the card column 8 from escaping from the slot 7. The connecting seat 6 is also provided with an elastic adjustment structure 12 for driving the blocking piece 11 to maintain an initial position. When the backrest frame 3 is blocked from lying down, the matching position of the card column 8 and the slot 7 is subjected to force, so that the card column 8 can drive the blocking piece 11 to move, and the card column 8 thereby escapes from the slot 7.

[0018] When the backrest frame 3 lies down and presses a person or an object, this position will be used as a fulcrum, so that a force will be applied to the matching point of the pull rod 5 and the connecting seat 6. When the resistance reaches a certain value, the clamping column 8 will apply a force to the blocking sheet 11. At this time, the flip frame 10 rotates, so that the blocking sheet 11 can be moved to avoid, and the clamping column 8 can be separated from the clamping slot 7, resulting in a tripping phenomenon. When the electric push rod 4 works further, the pull rod 5 will slide in the air, thereby preventing the backrest frame 3 from lying down further, thereby achieving the effect of mechanical safety tripping. When the tripped clamping column 8 needs to be reset, it can be manually or by moving the electric push rod 4 backward to slide the clamping column 8 from the opening 9 into the clamping slot 7. When the backrest frame 3 is not pressed by a person or an object, the pull rod 5 is moved forward. When the backrest frame 3 is in the upright position, the backrest frame 3 is in the upright position and the seat frame 3 is in the upright position.

[0019] The elastic adjustment structure 12 includes a torsion spring 121 for driving the flip frame 10 to flip clockwise and a compression spring 122 for driving the flip frame 10 to flip counterclockwise. The torsion spring 121 is arranged on the connecting seat 6, and one end of the torsion spring 121 abuts against the connecting seat 6, and the other end abuts against the flip frame 10. The flip frame 10 includes a pressing end 101 and a lifting end 102 (the flip frame 10 at this time is equivalent to a seesaw), the blocking sheet 11 is arranged on the lifting end 102, the compression spring 122 acts on the pressing end 101, and the connecting seat 6 is also provided with a pressure regulating end 101. The adjusting bolt 13 of the spring 122 is threadedly matched with the connecting seat 6, and the turning frame 10 can be driven to rotate to one side through the torsion spring 121. The pressing end 101 is further pressed by the compression spring 122 to overcome part of the torque of the torsion spring 121, and the turning frame 10 is adjusted to rotate in the opposite direction, thereby adjusting the rotation angle of the turning frame 10, and the position of the blocking piece 11 can be changed, thereby adjusting the upper and lower limits of its release force (the release force is the resistance required for the card column to disengage from the card slot), and the pressure of the compression spring 122 can be adjusted by adjusting the adjusting bolt 13.

[0020] The flip frame 10 is also provided with a fall-stop hook 14 below the card column 8, and the blocking piece 11 is provided with a guide surface for guiding the card column 8 to enter the fall-stop hook 14. When the card column 8 is disengaged from the slot 7 and is disengaged, one end of the card column 8 will fall off relatively, thereby causing unnecessary trouble during manual or electric resetting. The fall-stop hook 14 can catch the fallen card column 8, thereby ensuring that the card column 8 is on one side of the opening 9, and the cooperation of the guide surface can facilitate the card column 8 to be reset to the slot 7 and enter the fall-stop hook 14. Of course, a tension spring 15 can be provided to keep the card column 8 in the position of the opening 9. One end of the tension spring 15 is fixed on the connecting seat 6, and the other end is fixed on the pull rod 5. When the card column 8 is disengaged from the slot 7, the tension spring 15 can pull the pull rod 5, thereby ensuring that the position of the card column 8 is near the opening 9, thereby facilitating the later resetting of the card column 8 into the slot 7.

[0021] The adjusting bolt 13 is also provided with a limiting surface 131 for limiting the rotation of the adjusting bolt 13; a clamp seat 16 is provided on the pressing end 101 at a position corresponding to the limiting surface 131; a clamp 17 is detachably connected to the clamp seat 16 for cooperating with the limiting surface 131 to limit the rotation of the adjusting bolt 13 (a blocking plane is most preferably provided on the clamp 17); because the adjusting bolt 13 is threaded, the adjusting bolt 13 is easy to rotate by itself, thereby affecting the stability; the clamp 17 is abutted against the limiting surface 131 to prevent the adjusting bolt 13 from rotating by itself, and the clamp 17 is detachably connected to the clamp seat 16, which is convenient to assemble and will not affect the normal adjustment of the adjusting bolt 13.

[0022] The flip frame 10 is also provided with an abutment piece 18 that flips synchronously with it, and a proximity switch 19 is provided on the connecting seat 6 at a position corresponding to the abutment piece 18 (the proximity switch 19 can be one of the normally open switch or the normally closed switch, or a combination of two). The proximity switch 19 interacts with the electric push rod 4 (specifically, the interaction can be through a control circuit. The control circuit belongs to the prior art and does not involve procedural improvements, so it will not be introduced in detail in this article). When the flip frame 10 rotates, the abutment piece 18 can trigger the proximity switch 19, thereby controlling the electric push rod 4 to stop working, or controlling the electric push rod 4 to reverse operation, thereby further improving the safety factor.

[0023] The pull rod 5 is provided with a slide slot hole 20 arranged along its length direction, and the card column 8 is guided to slide on the slide slot hole 20, and the pull rod 5 is also provided with a buffer spring 21, one end of the buffer spring 21 is fixed on the pull rod 5, and the other end is directly or indirectly connected to the card column 8. When the card column 8 is out of the slot 7, the buffer spring 21 can play a buffering role, and the slide slot hole 20 can facilitate the adaptive sliding of the card column 8.

[0024] The blocking piece 11 is erected on the flip frame 10 to form a groove, and the card column 8 is located in the groove. The groove is provided with a blocking surface 22 (the blocking surface 22 is most preferably arc-shaped) for limiting the card column 8 from being pulled out upward. The cooperation of the blocking surface 22 can ensure the direction in which the card column 8 is disengaged, so that it can enter the anti-fall return hook 14 after being disengaged.

[0025] The position of the connecting seat 6 corresponding to the card column 8 is also provided with a spring piece 23 for limiting its escape from the slot 7. The spring piece 23 is erected on one side of the opening 9 to extend the height of one side of the slot 7. Because the card column 8 and the slot 7 are coordinated, there are certain requirements for the pulling direction of the pull rod 5. By setting the spring piece 23, the height of one side of the slot 7 can be extended. At this time, the pull rod 5 can be pulled horizontally and longitudinally or horizontally. Only relying on the blocking piece 11, the pull rod 5 is only suitable for horizontal pulling.

[0026] A limit rod 24 is provided on the connection seat 6 above the abutment piece 18 (the abutment piece 18 is most preferably made of a metal spring sheet that can be relatively deformed and not easily damaged), which can limit the flipping angle of the abutment piece 18, thereby protecting the proximity switch 19.

Claims

1. A pressure-proof mechanical and electronic double insurance safety pin mechanism, comprising a base (1), a seat frame (2) and a backrest frame (3) that can be rotated and laid down relative to the seat frame (2), the base (1) is provided with an electric push rod (4), and also comprises a pull rod (5) for pulling the backrest frame (3) to rotate and lay down relative to the seat frame (2), characterized in that: A connecting seat (6) is provided on the backrest frame (3) at a position corresponding to the pull rod (5), a slot (7) is provided on the connecting seat (6), a post (8) is provided on the pull rod (5) at a position corresponding to the slot (7), an opening (9) is provided on the slot (7) for the post (8) to slide into, and a flip frame (10) is hingedly provided on the connecting seat (6), and one end of the flip frame (10) extends to one side of the opening (9) to form a blocking piece (11) for limiting the post (8) from escaping from the slot, and an elastic adjustment structure (12) for driving the blocking piece (11) to maintain an initial position is also provided on the connecting seat (6), when the backrest frame (3) is blocked from lying down, a force is applied to the matching portion of the post (8) and the slot (7), so that the post (8) can drive the blocking piece (11) to move, and the post (8) thereby escapes from the slot (7).

2. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 1, characterized in that: The elastic adjustment structure (12) comprises a torsion spring (121) for driving the flip frame (10) to flip clockwise, and a compression spring (122) for driving the flip frame (10) to flip counterclockwise. The torsion spring (121) is arranged on the connecting seat (6), and one end of the torsion spring (121) abuts against the connecting seat (6), and the other end abuts against the flip frame (10). The flip frame (10) comprises a pressing end (101) and a lifting end (102). The blocking sheet (11) is arranged on the lifting end (102). The compression spring (122) acts on the pressing end (101). The connecting seat (6) is also provided with an adjustment bolt (13) for adjusting the compression amount of the compression spring (122). The adjustment bolt (13) is threadedly engaged with the connecting seat (6).

3. A pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 1 or 2, characterized in that: A fall-stopping hook (14) is also provided on the flip frame (10) below the clamping column (8), and a guide surface for guiding the clamping column (8) to enter the fall-stopping hook (14) is provided on the blocking sheet (11).

4. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 2, characterized in that: The adjusting bolt (13) is also provided with a limiting surface (131) for limiting the rotation of the adjusting bolt (13), and a clamp seat (16) is provided on the pressing end (101) at a position corresponding to the limiting surface (131), and a clamp (17) is detachably connected to the clamp seat (16) for cooperating with the limiting surface (131) to limit the rotation of the adjusting bolt (13).

5. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 3, characterized in that: The flip frame (10) is also provided with an abutment sheet (18) that flips synchronously therewith, and a proximity switch (19) is provided on the connection seat (6) at a position corresponding to the abutment sheet (18), and the proximity switch (19) interacts with the electric push rod (4).

6. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 4, characterized in that: The pull rod (5) is provided with a slide slot hole (20) arranged along its length direction, and the clamping column (8) is guided and slidable on the slide slot hole (20). The pull rod (5) is also provided with a buffer spring (21), one end of the buffer spring (21) is fixed to the pull rod (5), and the other end is directly or indirectly connected to the clamping column (8).

7. A pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 1 or 2, characterized in that: It also includes a tension spring (15) for keeping the clamping column (8) located at the opening (9), one end of the tension spring (15) is fixed to the connecting seat (6), and the other end is fixed to the pull rod (5).

8. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 3, characterized in that: The blocking piece (11) is erected on the flip frame (10) to form a groove, the clamping column (8) is located in the groove, and a blocking surface (22) is provided on the groove to limit the clamping column (8) from being pulled out upwards.

9. A pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 1 or 2, characterized in that: A spring sheet (23) is also provided on the connection seat (6) at a position corresponding to the clamping column (8) to limit the clamping column (8) from escaping from the clamping slot (7). The spring sheet (23) is vertically arranged on one side of the opening (9) so as to extend the height of one side of the clamping slot (7).

10. The pressure-proof mechanical and electronic dual-safety safety pin mechanism according to claim 5, characterized in that: A limiting rod (24) is provided on the connection seat (6) above the abutment sheet (18).

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