Bidirectional anti-falling mechanism assembly with anti-theft function

Abstract

A bidirectional anti-falling mechanism assembly with an anti-theft function comprises a support base, a limiting piece rotationally installed on the support base, a shifting fork matched with the limiting piece and a push rod slidably installed on the support base, the limiting piece drives the shifting fork to slide up and down when rotating, a push shaft is arranged in the middle of the push rod, a clamping groove is formed in the middle of the limiting piece, and the clamping groove comprises an upper clamping position and a lower clamping position. Torsion acting on the push shaft by the upper clamping position or the lower clamping position deviates to one side of the shifting fork, the torsion is decomposed into acting force in the horizontal direction in the rotating direction, the friction force F of the push rod is increased, the friction force F is decomposed into acting force in the vertical direction, and part of gravity G of the push rod, the limiting piece and the shifting fork is overlapped or counteracted. Under the condition that the friction coefficient mu is not changed, the larger the pressure N in the horizontal direction is, the larger the friction F is, and therefore the larger the external force borne by the shifting fork is, the more stable the push shaft is, the shifting fork can be kept in the unlocking or locking state, and the anti-falling and anti-theft effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window locks, in particular to a two-way anti-falling mechanism component with anti-theft function. Background Art

[0002] Door and window transmission locks are devices used to control the locking and opening of doors and windows. The principle is mainly to open and close doors and windows through the cooperation of transmission shafts and transmission gears. The stability of its performance and the convenience of operation are of great significance to improving the user experience of doors and windows. In order to prevent the door and window locks from being pried from the outside or unable to remain unlocked, anti-fall mechanisms are usually set on the door and window locks.

[0003] For example, in the existing transmission lock with anti-fall function, reference can be made to the Chinese invention patent with patent application number CN202020870112.3, which discloses an anti-fall mechanism for a door and window strip lock, comprising a lock body and a toggle bar and a toggle fork movably mounted on the lock body, wherein a positioning hole is provided on the side of the lock body, a accommodating groove is provided on a side of the fork close to the toggle bar, a positioning piece is provided in the accommodating groove, a snap portion is provided at one end of the positioning piece, the snap portion passes through the accommodating groove and extends to the positioning hole, a spring piece is provided at the other end of the positioning piece, and an inclined guide portion is provided on the side of the positioning piece close to the toggle bar, and an inclined guide block is provided on the corresponding guide portion on the toggle bar, and the snap portion of the positioning piece is clamped on the positioning hole of the lock body to achieve a positioning effect on the toggle fork and the toggle bar, so that the toggle bar and the fork installed on the toggle bar will not fall, thereby avoiding the failure of the locking function of the strip lock.

[0004] However, in the above structure, since the positioning piece needs to be matched with the positioning hole, and the positioning piece needs to be unlocked by moving the toggle bar downward after being locked, the anti-fall lock of this structure can only be installed on the left or right door or window, and the accessories need to be designed or assembled to distinguish the left and right parts, and cannot be universal for both. When both doors and windows need to be installed with door and window locks, two symmetrical sets of door and window locks need to be purchased at the same time, which increases the complexity of installation and is easy to install incorrectly;

[0005] For corresponding manufacturers, they need to produce two symmetrical door and window locks separately, which will not only increase the difficulty and cost of production, but also make inventory management quite troublesome, increasing the difficulty of inventory management. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a two-way anti-falling mechanism component with anti-theft function.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A two-way anti-fall mechanism assembly with anti-theft function comprises a bracket seat, a limit plate rotatably mounted on the bracket seat, a fork matched with the limit plate, and a push rod slidably mounted on the bracket seat, the bracket seat is provided with a mounting cavity, one end of the limit plate is hinged in the mounting cavity, and the other end is connected with the fork; one end of the fork is slidably mounted in the mounting cavity, and the other end is connected with a transmission rod, and the limit plate drives the fork to slide up and down when it rotates, and the middle part of the push rod is provided with a push shaft for driving the limit plate to rotate, and the middle part of the limit plate is provided with a slot matched with the push shaft drive, the slot includes an upper slot and a lower slot, and the torque acting on the push shaft by the upper slot or the lower slot is biased toward one side of the fork.

[0009] In the utility model, the slot is a Y-shaped slot, and the two forked end points of the slot correspond to the upper and lower slots. When the limiting piece rotates to the highest point or the lowest point, the opening direction of the upper and lower slots deviates from the moving direction of the push shaft.

[0010] In the utility model, a swing rod is provided at one end of the limit plate away from the hinge point, and a U-shaped groove extending in the horizontal direction is provided at the inner end of the fork, and the swing rod is slidably fitted in the U-shaped groove.

[0011] In the utility model, the installation cavity is connected up and down, and a sliding pad is provided at the upper and lower connecting openings for limiting the push rod from sliding up and down. The inner contour of the sliding pad is adapted to the outer contour of the push rod. The sliding pad fits at the connecting opening through a wedge-shaped structure, and the push rod and the sliding pad slide in cooperation.

[0012] Furthermore, a long groove cooperating with the push shaft is provided on the inner wall of the bracket seat in the installation cavity, the long groove extends along the moving direction of the push weight, and the end of the push shaft is slidably fitted in the long groove.

[0013] In the utility model, a bracket cover is further provided on the outer side of the bracket seat, and the bracket cover is covered on one side of the bracket seat to form the installation cavity.

[0014] In the utility model, a positioning steel ball for positioning the push rod is further provided in the installation cavity, and a positioning groove for cooperating with the positioning steel ball is provided on the push rod. When the push rod is in a locked state or an unlocked state, the positioning steel ball abuts against the positioning groove.

[0015] Furthermore, the bracket seat is provided with a steel ball groove for accommodating a positioning steel ball, and a spring is provided in the steel ball groove, and the positioning steel ball is pushed against the positioning groove by the spring; the positioning steel ball and the steel ball groove are provided with two groups, and are respectively arranged at positions close to the upper and lower conducting ports in the installation cavity.

[0016] The utility model has the following advantages and beneficial effects:

[0017] By setting a slot on the limit plate, the slot is divided into an upper slot and a lower slot. When the push rod shaft is located at the upper slot or the lower slot, the pull fork is driven by external force. The limit plate generates a torque acting on the push shaft through the rocker arm. The torque is decomposed into a horizontal force along the rotation direction, which increases the friction F of the push rod, and decomposed into a vertical force, which superimposes or offsets part of the gravity G of the push rod, the limit plate, and the pull fork. The magnitude of the friction force depends on the friction coefficient and the pressure static perpendicular to the contact surface. According to the friction formula: F=μN, when the friction coefficient μ remains unchanged, the greater the horizontal pressure N, the greater the friction F. Therefore, the greater the external force on the pull fork, the more stable the push shaft, thereby enabling the pull fork to remain unlocked or locked, achieving the effect of anti-falling and anti-theft. Since the upper and lower slots are provided at both ends of the limit slot, the same technical effect can be achieved even if the lock is used upside down, thereby achieving the function of two-way anti-falling and anti-theft.

[0018] For manufacturers, only one model of this door and window lock needs to be produced, which will not increase the difficulty of production, reduce production costs, and facilitate inventory management and reduce inventory space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 is a disassembled diagram of the bidirectional anti-falling mechanism assembly in this embodiment;

[0021] Figure 2 : is an installation structure diagram of the two-way anti-falling mechanism assembly in this embodiment;

[0022] Figure 3 Schematic diagram of the limiting piece in this embodiment;

[0023] Figure 4 This is a schematic diagram of the push shaft in the lower locking position in this embodiment;

[0024] Figure 5 This is a schematic diagram of the push shaft driving the limit plate to rotate in this embodiment;

[0025] Figure 6 It is a schematic diagram of the push shaft in the upper locking position in this embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0027] like Figures 1 to 6As shown, the present embodiment discloses a two-way anti-falling mechanism assembly with anti-theft function, comprising a bracket shell 7 for fixing on doors and windows and a bracket seat 1 arranged in the bracket shell 7, a limiting piece 2 rotatably mounted on the bracket seat 1, a fork 3 cooperating with the limiting piece 2, and a push rod 4 slidably mounted on the bracket seat 1 up and down. Specifically, a mounting cavity 10 is provided in the bracket seat 1, one end of the limiting piece 2 is hinged in the mounting cavity 10, and the other end is connected with the fork 3 in cooperation, one end of the fork 3 is slidably mounted in the mounting cavity 10 up and down, and the other end extends to the outside of the bracket seat 1 and is connected with the transmission rod 6, when the limiting piece 2 rotates, the fork 3 is driven to slide up and down, a push shaft 41 for driving the limiting piece 2 to rotate is provided in the middle part of the push rod 4, a slot 20 driven by the push shaft 41 is provided in the middle part of the limiting piece 2, and the slot 20 comprises an upper clamping position 202 and a lower clamping position 201 symmetrical to each other, and when the push shaft 41 is located at the upper clamping position 202 or the lower clamping position 201, the fork 3 correspondingly moves 3 is in the unlocked or locked state. When external force acts on the fork 3 to rotate the limit plate 2, the torque of the upper clamping position 202 or the lower clamping position 201 acting on the push shaft 41 is biased to one side of the fork 3. The torque is decomposed into a horizontal force along the rotation direction, which increases the friction F of the push rod 4, and decomposed into a vertical force, which superimposes or offsets part of the gravity G of the push rod 4, the limit plate 2, and the fork 3; and the magnitude of the friction force depends on the friction coefficient and the pressure static perpendicular to the contact surface. According to the friction formula: F=μN, when the friction coefficient μ remains unchanged, the greater the horizontal pressure N, the greater the friction F. Therefore, the greater the external force on the fork 3, the more stable the push shaft 41, thereby keeping the fork unlocked or locked, achieving the effect of anti-falling and anti-theft; because the upper clamping position 202 and the lower clamping position 201 are provided at both ends of the card slot 20, the same technical effect can be achieved even if the lock is used upside down, thereby achieving the function of two-way anti-falling and anti-theft.

[0028] In this embodiment, the slot 20 is a Y-shaped slot, and the two forked endpoints of the slot 20 correspond to the upper slot 202 and the lower slot 201. When the limiting plate 2 rotates to the highest point or the lowest point, the opening direction of the upper slot 202 or the lower slot 201 deviates from the moving direction of the push shaft 41.

[0029] In this embodiment, in order to convert the rotation of the limit plate 2 into the up and down sliding of the fork 3, a rocker arm 21 is provided on the end of the limit plate 2 away from the hinge point, and a U-shaped groove 30 extending in the horizontal direction is provided at the inner end of the fork 3. The rocker arm 21 slides in the U-shaped groove 30. When the limit plate 2 rotates, the rocker arm 21 slides in the U-shaped groove 30, thereby converting the rotation of the limit plate 2 into the up and down sliding of the fork 3.

[0030] In this embodiment, the installation cavity 10 is connected up and down, and the push rod 4 passes through the connecting opening. At the same time, a sliding pad 11 is provided at the connecting opening for limiting the push rod 4 from sliding up and down. The inner contour of the sliding pad 11 is adapted to the outer contour of the push rod 4. The sliding pad 11 fits at the connecting opening through a wedge-shaped structure, and the push rod 4 slides with the sliding pad 11.

[0031] Furthermore, in order to prevent the push shaft 41 from being deformed due to torsion, a long groove 12 cooperating with the push shaft 41 is provided on the inner wall of the bracket seat 1 in the installation cavity 10. The long groove 12 extends along the moving direction of the push weight, and the end of the push shaft 41 slides in the long groove 12.

[0032] In this embodiment, a bracket cover 5 is further provided on the outer side of the bracket seat 1 , and the bracket cover 5 covers one side of the bracket seat 1 to form the installation cavity 10 .

[0033] like Figure 4 As shown, when the push shaft 41 is in the lower locking position 201, the push rod 4 and the fork 3 are in a locked state. When an external force acts on the fork 3 to move it upward, the force is transmitted to the limit plate 2 through the U-shaped groove 30 and the rocker rod to make it rotate upward. The Y-shaped locking groove 20 can make the push shaft 41 subject to a rightward deflection force and an upward thrust. However, the deflection force will cause the push shaft 41 to press to the right to generate friction, and the generated friction force will be much greater than the upward thrust of the push shaft 41, so that the push rod 4 and the fork 3 can always be maintained.

[0034] like Figure 5 As shown, the push rod 4 directly drives the push shaft 41 to move upward. At this time, the push shaft 41 is only subjected to an upward thrust, so it can easily move upward, thereby cooperating with the card slot 20 to drive the limit plate 2 to rotate. The upward rotating limit plate 2 drives the fork 3 to unlock through the rocker arm 21 and the U-shaped groove 30.

[0035] like Figure 6 As shown, when the push shaft 41 is in the upper locking position 202, the transmission is carried out, and the push shaft 41 is mainly subjected to the downward gravity of the push rod 4, as well as the rightward deflection force and downward thrust generated on the limit plate 2 through the gravity of the fork 3 and the transmission rod 6. It is only necessary to ensure that the friction force generated by the deflection force is greater than the downward thrust plus the gravity of the push rod 4, so as to ensure that the push rod 4 and the fork 3 are in the unlocked state.

[0036] In this embodiment, a positioning steel ball 13 for positioning the push rod 4 is further provided in the installation cavity 10, and a positioning groove 42 for cooperating with the positioning steel ball 13 for positioning is provided on the push rod 4. The positioning groove 42 is provided with two groups corresponding to the locked state and the unlocked state of the push rod 4. When the push rod 4 is in the locked state or the unlocked state, the positioning steel ball 13 is pressed against the positioning groove 42 to prevent the push rod 4 from rebounding; preferably, a steel ball groove 14 for accommodating the positioning steel ball 13 is provided on the bracket seat, and a spring is provided in the steel ball groove 14, which is not shown in the accompanying drawings. The positioning steel ball 13 is pushed against the positioning groove 42 by the spring. At the same time, the positioning steel ball 13 and the steel ball groove 14 are provided with two groups, and are respectively arranged at positions close to the upper and lower conducting openings in the installation cavity (10).

[0037] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention. In addition, the directional words involved, such as "front, back, left, right, up, down, vertical, horizontal", etc., are only for the convenience of description to refer to the relative position relationship of each component, and are not the actual unique designated positions.

Claims

1. A two-way anti-fall mechanism assembly with anti-theft function, characterized in that: The invention comprises a support seat (1), a limit plate (2) rotatably mounted on the support seat (1), a shift fork (3) matched with the limit plate (2), and a push rod (4) slidably mounted on the support seat (1); a mounting cavity (10) is provided in the support seat (1); one end of the limit plate (2) is hinged in the mounting cavity (10), and the other end is matched with the shift fork (3); one end of the shift fork (3) is slidably mounted in the mounting cavity (10), and the other end is connected to the transmission rod (6). When the limiting plate (2) rotates, it drives the shift fork (3) to slide up and down. A push shaft (41) for driving the limiting plate (2) to rotate is provided in the middle of the push rod (4). A clamping groove (20) cooperating with the push shaft (41) to drive is provided in the middle of the limiting plate (2). The clamping groove (20) comprises an upper clamping position (202) and a lower clamping position (201). The torque acting on the push shaft (41) by the upper clamping position (202) or the lower clamping position (201) is biased toward one side of the shift fork (3).

2. A two-way anti-falling mechanism assembly with anti-theft function according to claim 1, characterized in that: The card slot (20) is a Y-shaped slot, and the two bifurcated end points of the card slot (20) correspond to the upper card position (202) and the lower card position (201). When the limiting piece (2) rotates to the highest point or the lowest point, the opening direction of the upper card position (202) or the lower card position (201) deviates from the moving direction of the push shaft (41).

3. A two-way anti-falling mechanism assembly with anti-theft function according to claim 1, characterized in that: A swing rod (21) is provided at one end of the limit plate (2) away from the hinge point, and a U-shaped groove (30) extending in the horizontal direction is provided at the inner end of the fork (3), and the swing rod (21) is slidably fitted in the U-shaped groove (30).

4. A two-way anti-falling mechanism assembly with anti-theft function according to claim 1, characterized in that: The installation cavity (10) is connected up and down, and a sliding pad (11) for limiting the push rod (4) from sliding up and down is provided at the upper and lower connection openings, the inner contour of the sliding pad (11) is adapted to the outer contour of the push rod (4), the sliding pad (11) fits in the connection opening via a wedge-shaped structure, and the push rod (4) and the sliding pad (11) are slidably matched.

5. A two-way anti-falling mechanism assembly with anti-theft function according to claim 4, characterized in that: An elongated groove (12) cooperating with the push shaft (41) is provided on the inner wall of the bracket seat (1) in the installation cavity (10); the elongated groove (12) extends along the moving direction of the push weight, and the end of the push shaft (41) is slidably fitted in the elongated groove (12).

6. A two-way anti-falling mechanism assembly with anti-theft function according to claim 1, characterized in that: A bracket cover (5) is also provided on the outer side of the bracket seat (1), and the bracket cover (5) covers one side of the bracket seat (1) to form the installation cavity (10).

7. A two-way anti-falling mechanism assembly with anti-theft function according to claim 4, characterized in that: A positioning steel ball (13) for positioning the push rod (4) is also provided in the installation cavity (10); a positioning groove (42) for cooperating with the positioning steel ball (13) for positioning is provided on the push rod (4); when the push rod (4) is in a locked state or an unlocked state, the positioning steel ball (13) abuts against the positioning groove (42).

8. A two-way anti-falling mechanism assembly with anti-theft function according to claim 7, characterized in that: The bracket seat is provided with a steel ball groove (14) for accommodating a positioning steel ball (13), a spring is provided in the steel ball groove (14), and the positioning steel ball (13) is pushed against the positioning groove (42) by the spring; two groups of the positioning steel balls (13) and the steel ball grooves (14) are provided, and are respectively arranged at positions close to the upper and lower conducting openings in the installation cavity (10).

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