Double-linkage core box frame lock catch structure

Abstract

The utility model relates to a double-linkage core box frame lock catch structure, which comprises a core box frame body and a cap shell base body, the core box frame body is fixedly connected with the cap shell base body through a lock catch structure, and the double-linkage core box frame lock catch structure is characterized in that the lock catch structure comprises a fulcrum frame fixed on one side of the cap shell base body, the supporting point is matched with the supporting point frame and is fixedly connected to one side of the core box frame body; the cap shell base body further comprises two locking buckles, and the two lock tongues on the core box frame body are matched with the locking buckles through locking switches to achieve fixed connection of the core box frame body and the cap shell base body. The utility model has the characteristic of stable and reliable connection.

Description

Technical Field

[0001] The utility model relates to the field of protective equipment in industrial production, in particular to a double-linked core box frame locking structure for a helmet used for protecting the face. Background Art

[0002] When performing welding operations, you need to use a mask with a core box. This mask can automatically adjust the darkness of the core box according to the welding light to protect the operator's eyes. Most masks on the market use a detachable core box.

[0003] Currently, most masks on the market use a single-point locking structure for connecting the core box to the mask, that is, a single locking switch is used to lock a single position of the cap shell. After long-term use or multiple disassembly, the locking effect and stability will deteriorate. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a double-linked core box frame lock structure with good locking effect and high stability.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A double-linked core box frame lock structure comprises a core box frame and a cap shell base, wherein the core box frame and the cap shell base are fixedly connected via a lock structure. The innovation lies in that the lock structure comprises a fulcrum frame fixed on one side of the cap shell base, and a fulcrum fixedly connected to one side of the core box frame and cooperating with the fulcrum frame; the cap shell base further comprises two locking buckles, and two locking tongues on the core box frame cooperate with the locking buckles via a locking switch to achieve fixed connection between the core box frame and the cap shell base.

[0007] Furthermore, the locking structure also includes a locking support frame, which is fixedly mounted on the cap shell base, and a rotary disk is rotatably connected to the locking support frame, and a circular arc groove is correspondingly provided on the rotary disk; one end of each lock tongue is connected to a pin shaft, and the pin shaft slides in the circular arc groove respectively, and there are movable grooves on both sides of the lock tongue, and limit blocks fixedly connected to the locking support frame are inserted in the movable grooves.

[0008] Furthermore, the locking switch has a rack, the rotating wheel is a gear wheel, and the locking switch is engaged with the gear wheel of the rotating wheel through the rack.

[0009] Furthermore, the rotating wheel rotates on the locking support frame via a rotating shaft.

[0010] Furthermore, one side of the cap shell base body is provided with two fulcrum frames, and the two fulcrum frames cooperate with each other to form two fulcrums on one side of the core box frame body; and the fulcrums are inserted into the fulcrum frames.

[0011] The utility model firstly realizes the fixation of the core box and one side of the cap shell by inserting the two fulcrums on the core box frame into the fulcrum frame of the cap shell base, and then drives the two lock tongues to move through the locking switch to form a multi-point fixed connection between the core box and the other side of the cap shell.

[0012] The utility model has a simple structure, a good locking effect, and a relatively stable locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 AA direction cross-sectional schematic diagram;

[0016] Figure 3 This is an exploded diagram of the lock structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structural state of one side of the utility model after installation;

[0018] Figure 5 This is a schematic diagram of the state in which the locking switch of the utility model is engaged with the rotating wheel. DETAILED DESCRIPTION

[0019] The following is based on the ideal embodiment of the present invention. Through the following description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this invention. The technical scope of this utility model is not limited to the content of the specification, but must be determined according to the scope of the claims.

[0020] The present invention will be further described with reference to the following drawings:

[0021] like Figures 1 to 5As shown, a double-linked core box frame lock structure includes a core box frame 1 and a cap shell base 2, wherein the core box frame 1 and the cap shell base 2 are fixedly connected via a lock structure. The lock structure is characterized in that: the lock structure includes a fulcrum frame 2-1 fixed to one side of the cap shell base 2, and a fulcrum 1-1 fixedly connected to one side of the core box frame 1 and cooperating with the fulcrum frame 2-1; the cap shell base 2 also includes two locking buckles 2-2, and two locking tongues 3 on the core box frame 1 cooperate with the locking buckles 2-2 via a locking switch 4 to achieve a fixed connection between the core box frame 1 and the cap shell base 2. The utility model can drive the two locking tongues 3 to perform a locking operation at one time through the locking switch 4, which not only has a simple structure but also has the characteristics of stable locking and good locking effect.

[0022] like Figure 3-5 As shown, the lock structure also includes a locking support frame 5, which is fixedly mounted on the cap shell base 2. A rotary disk 6 is rotatably connected to the locking support frame 5, and the rotary disk 6 is correspondingly provided with an arc groove 6-1. One end of each locking tongue 3 is connected to a pin 3-1, which slides within the arc groove 6-1. The locking tongue 3 also has movable grooves 3-2 on both sides, and the movable grooves 3-2 are inserted with limit blocks 5-1 fixedly connected to the locking support frame 5. The rotation of the rotary disk 6 drives the pin 3-1 to slide within the arc groove 6-1, thereby causing the two locking tongues 3 to respectively perform telescopic movement, achieving the purpose of locking and opening and closing.

[0023] The locking switch 4 has a rack 4-1, and the rotating wheel 6 is a gear plate. The locking switch 4 is engaged with the gear plate of the rotating wheel 6 through the rack 4-1. The gear engagement well ensures the rotation effect of the rotating wheel 6, and the operation is simple and smooth.

[0024] The rotating wheel 6 is rotated on the locking support frame 5 through the rotating shaft 7. The transmission effect of the rotating wheel 6 can also be well guaranteed.

[0025] The cap shell base 2 has two support frames 2-1 on one side, and the two support frames 2-1 cooperate with two support points 1-1 on one side of the core box frame 1; and the support points 1-1 are inserted into the support frames 2-1. In this way, the connection can be fixed at four points, which is firm and more stable.

[0026] The utility model realizes single-side fixation by inserting two fulcrums on one side into the fulcrum frame, and the other side drives two locking tongues to be locked through the locking switch 4, and its locking effect and stability are very reliable and stable.

Claims

1. A double-linked core box frame locking structure, comprising a core box frame (1) and a cap shell base (2), wherein the core box frame (1) and the cap shell base (2) are fixedly connected via a locking structure, characterized in that: The locking structure comprises a fulcrum frame (2-1) fixed on one side of the cap shell base (2), and a fulcrum (1-1) matched with the fulcrum frame (2-1) and fixedly connected to one side of the core box frame (1); The cap shell base (2) further comprises two locking buckles (2-2), and the two locking tongues (3) on the core box frame (1) cooperate with the locking buckles (2-2) via a locking switch (4) to achieve a fixed connection between the core box frame (1) and the cap shell base (2).

2. A double-linked core box frame locking structure according to claim 1, characterized in that: The lock structure further comprises a locking support frame (5), the locking support frame (5) being fixedly mounted on the cap shell base (2), the locking support frame (5) being rotatably connected to a rotary disk (6), and the rotary disk (6) being correspondingly provided with an arc groove (6-1); one end of each locking tongue (3) is connected to a pin shaft (3-1), the pin shaft (3-1) respectively sliding in the arc groove (6-1), and the locking tongue (3) is further provided with movable grooves (3-2) on both sides, and a limit block (5-1) fixedly connected to the locking support frame (5) is inserted in the movable groove (3-2).

3. The double-linked core box frame locking structure according to claim 1, characterized in that: The locking switch (4) is provided with a rack (4-1), the rotating wheel (6) is a gear wheel, and the locking switch (4) is engaged with the gear wheel of the rotating wheel (6) via the rack (4-1).

4. A double-linked core box frame locking structure according to claim 3, characterized in that: The rotating wheel (6) rotates on the locking support frame (5) via the rotating shaft (7).

5. The double-linked core box frame locking structure according to claim 1, characterized in that: One side of the cap shell base (2) is provided with two fulcrum frames (2-1), and the two fulcrum frames (2-1) cooperate with two fulcrums (1-1) on one side of the core box frame (1); and the fulcrums (1-1) are inserted into the fulcrum frames (2-1).

Images