Three-point lock

Abstract

The utility model relates to a three-point type lock which comprises a first extending part and a second extending part, the first extending part is used for extending into a lock nose, the second extending part is used for extending into a lock nose in the other direction, a guide face is arranged on the first extending part, the first extending part drives the second extending part to move through the guide face, and the guide face is obliquely arranged. The utility model has the advantages of simple connection and low maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locking structure, and particularly to a three-point lock. BACKGROUND

[0002] The sealing window usually adopts a single-point or double-point locking mechanism to lock the compartment door, but the force is uneven, which leads to poor sealing. The Chinese patent with the publication number CN218970923U provides a three-point locking device, which comprises a first body having a first guide seat and a first lock; the first lock is located on one side of the first guide seat; a driven shaft passes through the first guide seat and the first lock to form a lock shaft structure; the driven shaft can move along the axial direction of the driven shaft; a connecting piece has two parts and is symmetrically arranged on both sides of the driven shaft; one end of the connecting piece is pivotally connected to the driven shaft; a second body has two groups and is located on both sides of the axial direction of the driven shaft; the second body has a second guide seat and a second lock; the second lock is located on the side of the second guide seat away from the driven shaft; a driving shaft has two parts and is arranged on both sides of the axial direction of the driven shaft; one end of the driving shaft passes through the corresponding second guide seat and the corresponding second lock to form a lock shaft structure, and the other end is pivotally connected to the other end of the corresponding connecting piece; the driving shaft and the driven shaft are arranged vertically; the pivot connection position of the driving shaft and the connecting piece is located below the pivot connection position of the driven shaft and the connecting piece.

[0003] The use of this linkage makes the connection of the two ends of the driving shaft and the driven shaft more complex, resulting in a higher maintenance cost of the lock. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, one of the purposes of the present application is to provide a three-point lock which has the advantages of simple connection and low maintenance cost.

[0005] The above purpose of the present application is achieved by the following technical solution:

[0006] A three-point lock comprises a first extension piece and a second extension piece, the first extension piece is used to extend into a lock nose, and the second extension piece is used to extend into a lock nose in another direction; a guide surface is arranged on the first extension piece; the first extension piece drives the second extension piece to move through the guide surface; and the guide surface is arranged obliquely.

[0007] By using the above technical solution, the first extension piece is driven to move forward to extend into the lock nose to achieve the locking purpose; when the first extension piece moves forward, the contact part of the second extension piece and the guide surface transitions from the end away from the lock nose to the end close to the lock nose, thereby driving the second extension piece to extend into the lock nose; the first extension piece drives the second extension piece to move through the contact with the guide surface, so that the structure is simple and the maintenance cost is lower.

[0008] The application can be further configured, in a preferred example, that the first extending piece is provided with a contact surface, which is used to contact the second extending piece.

[0009] The application can be further configured, in a preferred example, that the second extending piece is provided with a matching piece, which is rotationally connected with the second extending piece, and is used to abut against the guide surface.

[0010] By using the above technical scheme, the guide surface drives the matching piece to rotate when moving forward, thereby reducing the friction between the second extending piece and the guide surface.

[0011] The application can be further configured, in a preferred example, that the second extending piece is provided with a reset piece and a limiting block, the reset piece is used to apply force to the second extending piece, and the limiting block is used to limit the position of one end of the reset piece.

[0012] By using the above technical scheme, the limiting block limits the position of one end of the reset piece, so that the second extending piece can be reset when the other end of the reset piece applies force to the second extending piece.

[0013] The application can be further configured, in a preferred example, that it further comprises a first mounting groove and a second mounting groove, the first mounting groove is used to limit the movement path of the first extending piece and prevent it from falling off, and the second mounting groove is used to limit the movement path of the second extending piece and prevent it from falling off.

[0014] The application can be further configured, in a preferred example, that the second extending piece comprises a first connecting block, a second connecting block and a connecting rod, the reset piece is mounted on the connecting rod, and the first connecting block and the second connecting block are connected through the connecting rod.

[0015] By using the above technical scheme, the reset piece can be mounted on the connecting rod.

[0016] The application can be further configured, in a preferred example, that the second mounting groove is provided with a limiting groove, which is used to limit the position of the limiting block.

[0017] By using the above technical scheme, the limiting groove limits the position of the limiting block, so that the limiting block can fix the position of the reset piece.

[0018] The application can be further configured, in a preferred example, that the first extending piece and the second extending piece are provided with guide surfaces and cavities, which are used to make the first extending piece and the second extending piece more easily enter their corresponding lock noses.

[0019] The application can be further configured, in a preferred example, that it further comprises a first base, a second base and a connecting support, the first mounting groove is provided on the first base, the second mounting groove is provided on the second base, and the first base and the second base are connected through the connecting support

[0020] The application can be further configured to comprise a power source for driving the first extension member to move in a preferred example. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of an embodiment of the application.

[0022] Figure 2 is a structural schematic diagram of the first extension member and the second extension member of the application.

[0023] Figure 3 is a structural schematic diagram of the first extension member of the application.

[0024] Figure 4 is a structural schematic diagram of the second extension member of the application.

[0025] Figure 5 is a sectional structural schematic diagram of other embodiment A-A of the application.

[0026] Reference signs: 1, first base; 11, mounting groove one; 2, second base; 21, mounting groove two; 22, limiting groove; 3, connecting support; 4, power source; 5, first extension member; 51, guide surface; 52, contact surface; 53, oil bag; 54, accommodating groove; 55, extension block; 56, spring; 6, second extension member; 61, matching member; 62, reset member; 63, limiting block; 64, connecting block one; 65, connecting block two; 66, connecting rod; 7, guide surface; 8, cavity; 9, cover plate. DETAILED DESCRIPTION

[0027] The application will be further described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1 to 4 A three-point lock is disclosed in the application, comprising a first base 1, a second base 2, a connecting support 3, a power source 4, a first extension member 5 and a second extension member 6, the first base 1 and the second base 2 are connected through the connecting support 3, the power source 4 is used to drive the first extension member 5 to move, the first extension member 5 is installed on the first base 1 for extending into a lock nose, the second extension member 6 is installed on the second base 2 for extending into a lock nose in another direction, in this embodiment, the power source 4 can adopt a pneumatic cylinder or an electric push rod, the number of the second extension member 6 is set to two groups, and the number of the second base 2 and the connecting support 3 matched with the second extension member 6 is also set to two groups, in other embodiments, the number of the second extension member 6 can be set according to needs.

[0029] The first extension piece 5 is provided with a guide surface 51 and a contact surface 52, the contact surface 52 is used to contact the second extension piece 6, the first extension piece 5 drives the second extension piece 6 to move through the guide surface 51, the guide surface 51 is arranged obliquely, in this embodiment, the guide surface 51 can adopt an inclined surface.

[0030] The second extension piece 6 is provided with a matching piece 61, a reset piece 62 and a limiting block 63, the matching piece 61 is rotationally connected with the second extension piece 6, the matching piece 61 is used to abut against the guide surface 51, the reset piece 62 is used to apply force to the second extension piece 6, the limiting block 63 is used to limit the position of one end of the reset piece 62, the second extension piece 6 comprises a connecting block one 64, a connecting block two 65 and a connecting rod 66, the reset piece 62 is installed on the connecting rod 66, the connecting block one 64 and the connecting block two 65 are respectively threadedly connected or connected in other ways with the connecting rod 66, in this embodiment, the matching piece 61 can adopt a bearing or a roller, the reset piece 62 can adopt a spring, the second base 2 is provided with a guide column, the guide column passes through the cavity 8 on the second extension piece 6 to guide the second extension piece 6.

[0031] The first extension piece 5 and the second extension piece 6 are provided with a guide surface 7 and a cavity 8, the cavity 8 is used to save materials, the guide surface 7 is used to make the first extension piece 5 and the second extension piece 6 more easily enter the corresponding lock noses, in this embodiment, the cavity 8 is circular or long strip-shaped in shape, the number and shape of the cavity 8 can be set according to actual needs.

[0032] The first base 1 is provided with a mounting groove one 11, the second base 2 is provided with a mounting groove two 21, the mounting groove one 11 is used to limit the movement path of the first extension piece 5 and prevent it from falling off, the mounting groove two 21 is used to limit the movement path of the second extension piece 6 and prevent it from falling off, the mounting groove two 21 is provided with a limiting groove 22, the limiting groove 22 is used to limit the position of the limiting block 63, in this embodiment, the first base 1 and the second base 2 are also provided with a cover plate 9, the cover plate 9 is used to reduce impurities falling into the lock, the mounting groove one 11 and the mounting groove two 21 are T-shaped grooves, in other embodiments, the shapes of the mounting groove one 11 and the mounting groove two 21 can also be set as dovetail grooves or C-shaped grooves and other groove structures.

[0033] When the lock is locked, the power source 4 moves vertically to drive the first extension piece 5 to move vertically, the first extension piece 5 moves vertically along the mounting groove one 11, the first extension piece 5 enters the corresponding lock nose through the guide surface 7, when the first extension piece 5 moves, the guide surface 51 moves vertically to make the second extension piece 6 move transversely along the mounting groove two 21, and make the connecting block one 64 apply force to the reset piece 62, until the second extension piece 6 enters the corresponding lock nose.

[0034] When the lock is unlocked, the power source 4 moves vertically in the opposite direction, drives the first extension 5 to move vertically, the first extension 5 moves vertically along the mounting groove I 11, the first extension 5 exits the corresponding lock nose, the guide surface 51 moves vertically, the reset member 62 applies force to the connecting block I 64, so that the second extension 6 exits the corresponding lock nose along the mounting groove II 21 and moves to the initial position.

[0035] The implementation principle of the embodiment is that the first extension 5 is driven to move forward, so that the first extension 5 extends into the lock nose to achieve the locking purpose, when the first extension 5 moves forward, the contact position of the second extension 6 and the guide surface 51 transitions from the end away from the lock nose to the end close to the lock nose, so as to drive the second extension 6 to extend towards the lock nose, so that the first extension 5 drives the second extension 6 to move through the contact with the guide surface 51, thereby making the structure simple and the maintenance cost lower.

[0036] Reference Figure 5 Another embodiment discloses a three-point lock, the first extension 5 is provided with an oil bag 53 and a containing groove 54, the oil bag 53 is used for lubricating the contact position of the first extension 5 and the second extension 6, the containing groove 54 is used for containing the oil bag 53, the oil bag 53 is provided with a one-way valve I and a hose, the oil bag 53 is connected with the outside through the one-way valve I, the conduction direction is that the oil bag 53 unidirectionally conducts to the outside, the hose is arranged at the communication position of the one-way valve I and the oil bag 53, the hose is used for connecting with the oil bag to send the lubricating medium to the contact position of the first extension 5 and the second extension 6, the first base 1 is provided with an extension block 55, when the first extension 5 moves forward, the containing groove 54 and the oil bag 53 move forward, so that the extension block 55 extrudes the oil bag 53, so that the lubricating medium in the oil bag 53 flows to the contact position of the first extension 5 and the second extension 6, the oil bag 53 and the oil supply tank are provided with a one-way valve II, the one-way valve II is used for unidirectionally conducting the oil bag 53 and the oil supply tank, the conduction direction is that the oil bag 53 unidirectionally conducts to the oil supply tank, when the first extension 5 moves backward, the oil bag 53 restores to the original volume and absorbs the lubricating medium from the oil supply tank, in the embodiment, in order to make the oil bag 53 reset smoothly, a spring 56 can be arranged in the oil bag 53, the number of the hoses is set according to the number of the second extensions 6.

[0037] The embodiments of the specific implementation are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A three-point lock, characterised in that: The first extension piece (5) is provided with a guide surface (51), and the first extension piece (5) drives the second extension piece (6) to move through the guide surface (51), and the guide surface (51) is arranged obliquely.

2. A three-point lock according to claim 1, characterised in that: The first extension piece (5) is provided with a contact surface (52), and the contact surface (52) is used for contacting the second extension piece (6).

3. A three-point lock according to claim 1, characterized in that: The second extension piece (6) is provided with a matching piece (61), and the matching piece (61) is rotationally connected with the second extension piece (6), and the matching piece (61) is used for abutting against the guide surface (51).

4. A three-point lock according to claim 1, characterized in that: The second extension piece (6) is provided with a reset piece (62) and a limiting block (63), the reset piece (62) is used for applying force to the second extension piece (6), and the limiting block (63) is used for limiting the position of one end of the reset piece (62).

5. A three-point lock according to claim 1, characterized in that: The installation slot one (11) is used for limiting the movement path of the first extension piece (5) and preventing it from falling off, and the installation slot two (21) is used for limiting the movement path of the second extension piece (6) and preventing it from falling off.

6. A three-point lock according to claim 5, characterised in that: The installation slot two (21) is provided with a limiting slot (22), and the limiting slot (22) is used for limiting the position of the limiting block (63).

7. A three-point lock according to claim 4, characterised in that: The second extension piece (6) includes a connecting block one (64), a connecting block two (65) and a connecting rod (66), the reset piece (62) is installed on the connecting rod (66), and the connecting block one (64) and the connecting block two (65) are connected through the connecting rod (66).

8. A three-point lock according to claim 1, characterized in that: The first extension piece (5) and the second extension piece (6) are provided with a guide surface (7) and a cavity (8), and the guide surface (7) is used for making the first extension piece (5) and the second extension piece (6) more easily enter the corresponding lock nose.

9. A three-point lock according to claim 6, characterized in that: The first base (1) and the second base (2) are connected through the connecting support (3).

10. A three-point lock according to claim 1, characterized in that: The power source (4) is used for driving the first extension piece (5) to move.

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