A push-pull structure combining lever and gear to increase travel

Abstract

The present invention discloses a push-pull structure for increasing the stroke by combining a lever and a gear. The handle fixing head is movably connected to the handle assembly through a fixed rotating shaft, the transmission slider is slidably connected in the handle fixing head, the bidirectional rack is connected to the transmission slider through a reversing screw, the plug-in column on the handle assembly passes through the handle fixing head and is inserted into the corresponding socket inside the transmission slider, the square rod fixing head and the transmission gear are both movably connected to the handle fixing head, and the transmission gear is respectively meshed with the bidirectional rack and the square rod fixing head. The present invention multiplies the stroke of the transmission gear by driving a semicircular gear through a circular gear to meet the demand, but because the force position of the handle assembly itself is far from the rotation fulcrum, the handle assembly can be rotated by a light push, which can balance the force increase caused by the circular gear of the transmission gear driving the semicircular gear, making the push-pull experience of the overall handle assembly easy and comfortable.

Description

Technical Field

[0001] The invention relates to the technical field of push-pull lock structures, in particular to a push-pull structure in which a lever and a gear are combined to increase the travel. Background Art

[0002] There are few large push-pull locks on the market, and the products themselves often require a larger push-pull stroke to unlock. To this end, we have launched a push-pull structure that combines a lever and a gear to increase the stroke. Summary of the invention

[0003] The object of the present invention is to provide a lever plus a gear combined with a push-pull structure for increasing the stroke, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a push-pull structure of a lever plus a gear combined with an increased stroke, comprising a reversing screw, a two-way rack, a transmission slide block, a handle reset torsion spring, a handle fixing head, a fixed rotating shaft, a handle assembly, a square rod fixing head reset torsion spring, a square rod fixing head and a transmission gear, the handle fixing head is movably connected to the handle assembly through a fixed rotating shaft, the transmission slide block is slidably connected in the handle fixing head, the two-way rack is connected to the transmission slide block through a reversing screw, the plug-in column on the handle assembly passes through the handle fixing head and is inserted into the corresponding socket inside the transmission slide block, the square rod fixing head and the transmission gear are both movably connected to the handle fixing head, the transmission gear is respectively meshed with the two-way rack and the square rod fixing head, the square rod fixing head reset torsion spring is fixed on the square rod fixing head, and the handle reset torsion spring is fixed on the corresponding plug-in column.

[0005] As a further optimization of the present technical solution, the bidirectional rack includes a first transmission rack and a second transmission rack symmetrically arranged, the transmission gear includes a semicircular gear and a circular gear fixed on the semicircular gear, the circular gear is meshed between the first transmission rack and the second transmission rack, and the semicircular gear is meshed with the square rod fixing head.

[0006] As a further optimization of the technical solution, the reversing screw can be slidably clamped in the corresponding clamping grooves on the inner sides of the first transmission rack and the second transmission rack.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: the forward and backward pushing angles of the handle assembly of the present invention are both 10 degrees, which is converted into an active stroke of the transmission slider and the first transmission rack and the second transmission rack of only 4 mm. However, the stroke required for the square rod fixing head to rotate 60 degrees is about 8 mm. The solution is to drive the semicircular gear through the circular gear of the transmission gear to double the stroke of the transmission gear to meet the demand. However, since the force position of the handle assembly itself is far away from the rotation fulcrum, the handle assembly can be rotated with a light push, which can balance the force increased by the circular gear of the transmission gear driving the semicircular gear, making the push-pull experience of the overall handle assembly easy and comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the explosion structure of the present invention;

[0009] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0010] Figure 3-6 This is a schematic diagram of the structure of the present invention in the state of use when the reversing screw is on the left and the first transmission rack;

[0011] Figure 7-10 This is a schematic diagram of the structure of the present invention in the state of use when the reversing screw is located on the right side with the second transmission rack;

[0012] Fig.11 It is a schematic structural diagram of the transmission gear of the present invention.

[0013] In the figure: 1 reversing screw, 2 bidirectional rack, 21 first transmission rack, 22 second transmission rack, 3 transmission slide block, 4 handle reset torsion spring, 5 handle fixed head, 6 fixed rotating shaft, 7 handle assembly, 8 square rod fixed head reset torsion spring, 9 square rod fixed head, 10 transmission gear, 101 circular gear, 102 semicircular gear, 11 plug-in column. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-11The present invention provides a technical solution: a push-pull structure for increasing the stroke by combining a lever and a gear, comprising a reversing screw 1, a bidirectional rack 2, a transmission slide block 3, a handle reset torsion spring 4, a handle fixing head 5, a fixed rotating shaft 6, a handle assembly 7, a square rod fixing head reset torsion spring 8, a square rod fixing head 9 and a transmission gear 10, wherein the handle fixing head 5 is movably connected to the handle assembly 7 through the fixed rotating shaft 6, the transmission slide block 3 is slidably connected in the handle fixing head 5, the bidirectional rack 2 is connected to the transmission slide block 3 through the reversing screw 1, the plug-in column 11 on the handle assembly 7 passes through the handle fixing head 5 and is inserted into the corresponding socket inside the transmission slide block 3, the square rod fixing head 9 and the transmission gear 10 are both movably connected to the handle fixing head 5, the transmission gear 10 is respectively meshed with the bidirectional rack 2 and the square rod fixing head 9, the square rod fixing head reset torsion spring 8 is fixed on the square rod fixing head 9, and the handle reset torsion spring 4 is fixed on the corresponding plug-in column 11.

[0016] Specifically, the bidirectional rack 2 includes a first transmission rack 21 and a second transmission rack 22 that are symmetrically arranged, the transmission gear 10 includes a semicircular gear 102 and a circular gear 101 fixed on the semicircular gear 102, the circular gear 101 is meshed between the first transmission rack 21 and the second transmission rack 22, and the semicircular gear 102 is meshed with the square rod fixing head 9.

[0017] Specifically, the reversing screw 1 can be slidably clamped in the corresponding clamping grooves on the inner sides of the first transmission rack 21 and the second transmission rack 22 .

[0018] Specifically, when in use, the reversing screw 1 is on the left: Figure 3 The figure shows the initial state when the reversing screw 1 is on the left;

[0019] like Figure 4 As shown, when the handle assembly 7 is pushed forward by force, the transmission slider 3 is driven upward due to the lever action, and then the first transmission rack 21 is driven upward through the reversing screw 1, and the circular gear 101 of the transmission gear 10 is synchronously driven to rotate right (the second transmission rack 22 is passively moved downward at this time), and finally the semicircular gear 102 of the transmission gear 10 drives the square rod fixing head 9 to rotate left;

[0020] like Figure 5 As shown, when the pushing force on the handle assembly 7 is released, the handle assembly 7 is fully reset to the initial state under the action of the handle reset torsion spring 4 and the square rod fixed head reset torsion spring 8 assembled inside the handle assembly 7 and the square rod fixed head 9;

[0021] like Figure 6As shown, the handle assembly 7 is pulled back by force, and the transmission slider 3 is driven downward by the lever action, and then the first transmission rack 21 is driven downward by the reversing screw 1, and the circular gear 101 of the transmission gear 10 is synchronously driven to turn left (the second transmission rack 22 is passively moved upward at this time), and finally the square rod fixing head 9 is driven to turn right by the semicircular gear 102 of the transmission gear 10, and returns to the initial state after the rearward pulling force is released;

[0022] Reversing screw 1 is on the right: Figure 7 As shown, it is the initial state that the reversing screw 1 is located to the right;

[0023] like Figure 8 As shown, when the handle assembly 7 is pushed forward by force, the transmission slider 3 is driven upward due to the lever action, and then the second transmission rack 22 is driven upward through the reversing screw 1, and the circular gear 101 of the transmission gear 10 is synchronously driven to turn left (the first transmission rack 21 is passively moved downward at this time), and finally the square rod fixing head 9 is driven to turn right by the semicircular gear 102 of the transmission gear 10;

[0024] like Fig. 9 As shown, when the pushing force on the handle assembly 7 is released, the handle assembly 7 is fully reset to the initial state under the action of the handle reset torsion spring 4 and the square rod fixed head reset torsion spring 8 assembled inside the handle assembly 7 and the square rod fixed head 9;

[0025] like Fig.10 As shown, after the handle assembly 7 is pulled by force, the transmission slider 3 is driven downward by the lever, and the second transmission rack 22 is driven downward by the reversing screw 1, and the circular gear 101 of the transmission gear 10 is synchronously driven to turn right (the first transmission rack 21 is passively moved upward at this time), and finally the semicircular gear 102 of the transmission gear 10 drives the square rod fixing head 9 to turn left, and returns to the initial state after the rear pulling force is released;

[0026] It mainly explains how to realize a larger rotation angle of the square rod fixing head 9 after the angle transformation when the movable angle of the handle assembly 7 is very limited.

[0027] Details: The forward and backward angles of the handle assembly 7 are both 10 degrees, which translates into a movable travel of only 4mm for the transmission slider 3 and the first transmission rack 21 and the second transmission rack 22. However, the travel required for the square rod fixed head 9 to rotate 60 degrees is about 8mm. The solution is to use the transmission gear 10 with two levels of large and small gears, and the small gear drives the large gear (the circular gear 101 drives the semicircular gear 102) to double the travel of the transmission gear 10 to meet the demand! However, since the force position of the handle assembly 7 itself is far from the rotation fulcrum, the handle assembly 7 can be rotated with a light push, which can balance the force caused by the small gear of the transmission gear 10 driving the large gear, making the push-pull experience of the overall handle assembly 7 easy and comfortable!

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lever plus gear combination push-pull structure for increasing travel, comprising a reversing screw (1), a bidirectional rack (2), a transmission slide block (3), a handle reset torsion spring (4), a handle fixing head (5), a fixed rotating shaft (6), a handle assembly (7), a square rod fixing head reset torsion spring (8), a square rod fixing head (9) and a transmission gear (10), characterized in that: The handle fixing head (5) is movably connected to the handle assembly (7) via a fixed rotating shaft (6); the transmission slide block (3) is slidably connected to the handle fixing head (5); the bidirectional rack (2) is connected to the transmission slide block (3) via a reversing screw (1); the plug-in column (11) on the handle assembly (7) passes through the handle fixing head (5) and is inserted into a corresponding socket inside the transmission slide block (3); the square rod fixing head (9) and the transmission gear (10) are both movably connected to the handle fixing head (5); the transmission gear (10) is respectively meshed with the bidirectional rack (2) and the square rod fixing head (9); The square rod fixed head reset torsion spring (8) is fixed on the square rod fixed head (9), the handle reset torsion spring (4) is fixed on the corresponding plug-in column (11), the bidirectional rack (2) comprises a first transmission rack (21) and a second transmission rack (22) which are symmetrically arranged, the transmission gear (10) comprises a semicircular gear (102) and a circular gear (101) fixed on the semicircular gear (102), the circular gear (101) is meshed between the first transmission rack (21) and the second transmission rack (22), and the semicircular gear (102) is meshed with the square rod fixed head (9).

2. A lever plus gear combined push-pull structure for increasing travel according to claim 1, characterized in that: The reversing screw (1) can be slidably clamped in corresponding clamping grooves on the inner sides of the first transmission rack (21) and the second transmission rack (22).

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