Limiting device of door handle

Abstract

The door handle limiting device comprises a panel, a sliding block, a shell and a lock pin mechanism, a guide groove penetrating through the inner side and the outer side is formed in the panel, the shell is fixedly connected to the inner side of the panel and covers the guide groove, the sliding block penetrates through the guide groove and is connected into the shell in a sliding mode, one end of the guide groove is provided with an unlocking gear, and the other end of the guide groove is provided with a lock pin. When the sliding block is located at the locking gear, the door handle is locked by the lock pin mechanism; the limiting device further comprises a spring, a plug pin and an unlocking key, a first sliding groove is formed in the sliding block, the plug pin is slidably connected in the first sliding groove, the spring is installed between the plug pin and the sliding block, force towards the shell is applied to the plug pin, an inserting groove where the plug pin can be inserted is formed in the end, close to the locking gear, of the shell, and a second sliding groove is formed in the end, away from the shell, of the sliding block. The unlocking key is slidably connected into the second sliding groove and is in transmission connection with the plug pin. The utility model provides a limiting device of a door handle, which is not easy to open by children after being locked.

Description

Technical Field

[0001] The utility model relates to the technical field of door handles, in particular to a limiting device for door handles. Background Art

[0002] Existing door locks include an inner panel, a door handle, a lock core and a child lock. The panel is installed on the inside of the door leaf, the door handle is rotatably connected to the panel and is transmission-connected to the lock core. The child lock includes a slider slidably connected to the panel, similar to a toggle switch, with two gears: unlocking and locking. When the slider is in the unlocking position, the door handle can be freely rotated to control the lock core switch. When the slider is in the locking position, the door handle is locked to prevent children from accidentally opening the door.

[0003] When the slider of the existing child lock is in the locking position, children can easily move the slider to the unlocking position and then turn the door handle, which still poses a great safety hazard. Utility Model Content

[0004] In order to solve the shortcoming of the existing child lock that is easily opened by children, the utility model provides a limiting device for a door handle, which is not easily opened by children after being locked.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A limiting device for a door handle comprises a panel and a slider, a shell and a lock pin mechanism, the panel is provided with a guide groove running through both sides inside and outside, the shell is fixedly connected to the inner side of the panel and covers the guide groove, the slider runs through the guide groove and is slidably connected in the shell, one end of the guide groove is set to the unlocking gear position, and the other end is set to the locking gear position. When the slider is in the locking gear position, the lock pin mechanism locks the door handle; the limiting device also comprises a spring, a latch and an unlocking key, a first sliding groove is provided in the slider, the latch is slidably connected in the first sliding groove, the spring is installed between the latch and the slider, and applies a force to the latch toward the shell, and a slot for inserting the latch is provided at the end of the shell close to the locking gear position, and a second sliding groove is provided at the end of the slider away from the shell, the unlocking key is slidably connected in the second sliding groove and is transmission connected to the latch, and pressing the unlocking key can drive the latch to move into the first sliding groove.

[0007] Through the above settings, the slider is slid to control the unlocking and locking of the door handle; after the slider slides to the locked position, the pin is automatically inserted into the slot. Without pressing the unlock button, children cannot move the slider to unlock the door, thereby improving safety.

[0008] Furthermore, a groove is provided on one side of the latch pin facing the second sliding groove, the bottom of the groove is inclined to form an extrusion surface, and the unlocking key is slidably connected to the extrusion surface.

[0009] Through the above arrangement, the unlocking key drives the latch to move outwards via the extrusion surface.

[0010] Furthermore, a mounting groove is provided on the inner wall of the first slide groove around the latch, a protrusion is provided on the latch along the circumference, a spring is sleeved on the latch, one end of the spring abuts against the end of the mounting groove away from the housing, and the other abuts against the protrusion.

[0011] Furthermore, the slider includes a main body and a cover portion, the main body extends into the shell and is at least partially arranged in the guide groove, the cover portion protrudes from the outside of the panel and is detachably connected to the main body, one end of the first slide groove is arranged in the cover portion, and the other end passes through the main body, the mounting groove is arranged on the main body, one end of the mounting groove extends to the cover portion, and the second slide groove is arranged on the cover portion.

[0012] The above arrangement makes it easy to install the spring into the slider.

[0013] Furthermore, the shell is basically a rectangular parallelepiped structure and can be detachably connected to the inner side of the panel.

[0014] Furthermore, the door handle includes a rotating shaft portion and a handle portion. The rotating shaft portion vertically passes through the panel and is rotatably connected to the panel. The handle portion is fixedly connected to the outer end of the rotating shaft portion. A limiting groove is provided on the side of the rotating shaft portion. The locking pin mechanism includes a locking pin. One end of the locking pin is fixedly connected to the slider, and the other end extends to the outside of the shell toward the limiting groove. The locking position is set in the guide groove at one end facing the rotating shaft portion. When the slider is in the locking position, the locking pin is inserted into the limiting groove.

[0015] With the above arrangement, after the slider moves upward to the locking position, the slider locks the door handle via the locking pin.

[0016] Furthermore, an accommodating groove for installing square steel is provided at the inner end of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the limiting device of the embodiment Figure 1 .

[0018] Figure 2 Schematic diagram of the limiting device of the embodiment Figure 2 .

[0019] Figure 3 Schematic diagram of the interior of the housing of the embodiment.

[0020] Figure 4 It is a transverse cross-sectional view of the limiting device of the embodiment.

[0021] Figure 5 for Figure 4 Schematic diagram of point A.

[0022] Figure 6 Schematic diagram of the slider in the embodiment being in the unlocking position.

[0023] Figure 7 Schematic diagram of the slider in the embodiment being in the locked position. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0025] like Figures 1 to 7 As shown, a door handle limiting device includes a panel 3 and a slider 4, a shell 5 and a lock pin mechanism. The panel 3 is provided with a guide groove 6 running through both the inside and outside. The shell 5 is fixedly connected to the inside of the panel 3 and covers the guide groove 6. The slider 4 passes through the guide groove 6 and is slidably connected to the shell 5. One end of the guide groove 6 is set to the unlocking gear position and the other end is set to the locking gear position. When the slider 4 is in the locking gear position, the lock pin mechanism locks the door handle 7; the limiting device also includes a spring 8, a latch 9 and an unlocking key 10. A first slide groove 11 is provided in the slider 4, and the latch 9 is slidably connected in the first slide groove 11. The spring 8 is installed between the latch 9 and the slider 4, applying a force to the latch 9 toward the housing 5. The end of the housing 5 close to the locking gear is provided with a slot 12 for inserting the latch 9. The end of the slider 4 away from the housing 5 is provided with a second slide groove 13. The unlocking key 10 is slidably connected in the second slide groove 13 and is transmission-connected to the latch 9. Pressing the unlocking key 10 can drive the latch 9 to move into the first slide groove 11.

[0026] Through the above arrangement, the slider 4 is slid to control the unlocking and locking of the door handle 7; after the slider 4 slides to the locking position, the latch 9 is automatically inserted into the slot 12. Without pressing the unlocking button 10, children cannot move the slider 4 to perform the unlocking operation, thereby improving safety.

[0027] The panel 3 of the present application is installed on the inner side of the door leaf, and the guide groove 6 extends vertically and is arranged below the door handle 7. The width of the guide groove 6 is adapted to the width of the slider 4 to prevent the slider 4 from shaking left and right, so that the slider 4 can slide up and down stably along the guide groove 6. The unlocking gear is located at the lower end of the guide groove 6, and the locking gear is located at the upper end of the guide groove 6. The lock pin mechanism can refer to the existing door lock. When the slider 4 is at the lower end of the guide groove 6, the door handle 7 can be freely rotated to open the door. When the slider 4 is at the upper end of the guide groove 6, the lock pin mechanism locks the door handle 7 to prevent children from turning the door handle 7 to open the door; the unlocking button 10 is located on the left or right side of the slider 4; when normal, the slider 4 is in the guide groove At the unlocking position at the lower end of the slot 6, the latch 9 is pressed on the inner wall of the shell 5 by the action of the spring 8, pushing the slider 4 upward. The slider 4 moves upward along the guide slot 6 to the locking position, and the latch 9 moves upward with the slider 4 to approach the slot 12. When the slider 4 moves to the locking position, the latch 9 moves to the slot 12. Under the action of the spring 8, the latch 9 is inserted into the slot 12 to lock the slider 4 in the locking position. Children cannot directly push the slider 4 downward to unlock; when it is necessary to unlock, press and hold the unlocking button 10, and the unlocking button 10 drives the latch 9 to move outward and leave the slot 12, and then push the slider 4 downward to the unlocking position, making it convenient to turn the door handle 7.

[0028] As an implementation method, a groove is provided on the side of the latch pin 9 facing the second sliding groove 13 , the bottom of the groove is inclined to form an extrusion surface 14 , and the unlocking key 10 is slidably connected to the extrusion surface 14 .

[0029] Through the above arrangement, the unlocking button 10 drives the latch 9 to move outwards via the pressing surface 14 .

[0030] The movement direction of the unlocking key 10 of the present application is perpendicular to the movement direction of the latch 9. After pressing the outer end of the unlocking key 10, the inner end of the unlocking key 10 squeezes the extrusion surface 14, and the latch 9 moves along the first sliding groove 11 back to the shell 5 to be pulled out from the slot 12.

[0031] As an implementation method, a mounting groove 15 is provided on the inner wall of the first slide groove 11 around the latch 9, and a protrusion 16 is provided along the circumference of the latch 9. The spring 8 is sleeved on the latch 9, and one end of the spring 8 is against the end of the mounting groove 15 away from the shell 5, and the other end is against the protrusion.

[0032] As an implementation method, the slider 4 includes a main body and a cover portion 42. The main body extends into the shell 5 and is at least partially arranged in the guide groove 6. The cover portion 42 protrudes from the outside of the panel 3 and is detachably connected to the main body. One end of the first slide groove 11 is arranged in the cover portion 42, and the other end passes through the main body. The mounting groove 15 is arranged on the main body, and one end of the mounting groove 15 extends to the cover portion 42. The second slide groove 13 is arranged on the cover portion 42.

[0033] The above arrangement facilitates the installation of the spring 8 into the slider 4 .

[0034] The slider 4 of the present application is a split structure. During assembly, the unlocking key 10 and the latch 9 are first installed on the cover portion 42, the spring 8 is installed in the mounting groove 15 of the main body, and then the cover portion 42 is installed on the main body.

[0035] As an implementation method, the shell 5 is basically a rectangular parallelepiped structure and is detachably connected to the inner side of the panel 3.

[0036] In the present application, the housing 5 is mounted on the inner side of the panel 3 by fasteners.

[0037] As an implementation method, the door handle 7 includes a rotating shaft portion 71 and a handle portion 72. The rotating shaft portion 71 vertically passes through the panel 3 and is rotatably connected to the panel 3. The handle portion 72 is fixedly connected to the outer end of the rotating shaft portion 71. A limiting groove 73 is provided on the side of the rotating shaft portion 71. The locking pin mechanism includes a locking pin 17. One end of the locking pin 17 is fixedly connected to the slider 4, and the other end extends to the outside of the shell 5 toward the limiting groove 73. The locking gear is set at one end of the guide groove 6 facing the rotating shaft portion 71. When the slider 4 is in the locking gear, the locking pin 17 is inserted into the limiting groove 73.

[0038] With the above arrangement, after the slider 4 moves upward to the locking position, the slider 4 locks the door handle 7 via the locking pin 17 .

[0039] The lock pin 17 of the present application extends vertically. After the slider 4 is pushed upward, the upper end of the lock pin 17 is inserted into the limit groove 73 to prevent the door handle 7 from rotating. Figure 7 As shown, the end of the lock pin 17 and the notch of the limit groove 73 are rounded so that the lock pin 17 can be inserted into the limit groove 73; after the slider 4 is pushed down to the unlocking position, the lock pin 17 is pulled out of the limit groove 73, so that the door handle 7 can be rotated, as shown in FIG. Figure 6 shown.

[0040] As an implementation method, an accommodating groove 18 for installing a square steel is provided at the inner end of the rotating shaft portion 71 .

[0041] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A door handle limiting device, characterized in that: The door handle is locked and unlocked when the door is unlocked. The door handle is locked when the door is unlocked. The door handle is locked when the door is unlocked. The door handle is locked when the door is unlocked.

2. A door handle limiting device according to claim 1, characterized in that: A groove is provided on one side of the latch pin facing the second sliding groove, the bottom of the groove is inclined to form an extrusion surface, and the unlocking key is slidably connected to the extrusion surface.

3. The door handle limiting device according to claim 1, characterized in that: The inner wall of the first sliding groove is provided with a mounting groove around the latch, the latch is provided with a protrusion along the circumference, the spring is sleeved on the latch, one end of the spring is against the end of the mounting groove away from the housing, and the other end is against the protrusion.

4. A door handle limiting device according to claim 3, characterized in that: The slider includes a main body and a cover portion, the main body extends into the shell and is at least partially arranged in the guide groove, the cover portion protrudes from the outside of the panel and is detachably connected to the main body, one end of the first slide groove is arranged in the cover portion, and the other end passes through the main body, the mounting groove is arranged on the main body, one end of the mounting groove extends to the cover portion, and the second slide groove is arranged on the cover portion.

5. The door handle limiting device according to claim 1, characterized in that: The shell is basically a rectangular parallelepiped structure and is detachably connected to the inner side of the panel.

6. The door handle limiting device according to claim 4, characterized in that: The door handle includes a rotating shaft portion and a handle portion, the rotating shaft portion vertically passes through the panel and is rotatably connected to the panel, the handle portion is fixedly connected to the outer end of the rotating shaft portion, and a limiting groove is provided on the side of the rotating shaft portion. The locking pin mechanism includes a locking pin, one end of the locking pin is fixedly connected to the slider, and the other end extends toward the limiting groove to the outside of the shell, the locking gear is provided at one end of the guide groove facing the rotating shaft portion, and when the slider is in the locking gear, the locking pin is inserted into the limiting groove.

7. The door handle limiting device according to claim 6, characterized in that: The inner end of the rotating shaft is provided with an accommodating groove for installing square steel.

Images