Hidden heaven and earth bolt for heavy door

Abstract

A hidden type heaven and earth bolt for a heavy door comprises a groove type track, a switch shifting piece, an L-shaped connecting piece, an L-shaped sliding block, a spring, a bolt head and a guide piece, the guide piece is arranged at the end, close to the edge of the heavy door, of the groove type track, a window is formed in the bottom face of the other end of the groove type track, and the switch shifting piece extends into the window and is connected with the bolt head through the spring. A pin shaft penetrates through the middle part of the switch shifting sheet; two ends of the pin shaft are fixed on the groove type rails on two sides of the middle part of the window through rivets; one end of the switch pick is a free end, and the other end is hinged to one end of the L-shaped connecting piece; the switch shifting sheet can rotate around the pin shaft; a limiting piece is arranged in each of the groove type rails on the two sides of the window; one end of the L-shaped sliding block is perpendicular to the groove type rail, abuts against the interior of the groove type rail and can slide, the other end of the L-shaped sliding block is parallel to the groove type rail, and a spring is arranged in the middle of the L-shaped sliding block. The device is simple in structure, convenient to operate and low in manufacturing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of locks, and in particular relates to a hidden top and bottom latch for a heavy door. Background Art

[0002] Copper door is a kind of entrance door. It is a heavy door with special texture and pattern on the surface. It is noble and elegant. It is a good choice for home or company facade. The top and bottom latch of this copper door generally needs to be hidden.

[0003] Chinese utility model patent 201420840713.4 discloses a built-in sky and earth lock structure, including a lock shell and a lock body arranged in the lock shell, the lock body includes an oblique lock tongue for locking and a connecting rod assembly for driving a sky and earth rod, and a toggle assembly for controlling the oblique lock tongue and the connecting rod assembly by toggling, the two ends of the toggle assembly are movably connected to the lock shell, the toggle assembly includes a toggle pick for toggling the connecting rod assembly, one side of the toggle pick is also provided with an oblique lock tongue for toggling and an upper fork for cooperating with the toggle pick to toggle the connecting rod assembly, and the toggle pick is also provided with a toggle pick reset spring for resetting the toggle pick. This built-in sky and earth lock has a compact structure and is placed in a profile cavity, but this solution is too complex in structure, easy to damage, and has a high manufacturing cost. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a hidden top and bottom latch for heavy doors which has a simple structure and low manufacturing cost.

[0005] The utility model is achieved in this way:

[0006] A hidden top and bottom latch for heavy doors, comprising: a groove track, a switch paddle, an L-shaped connector, an L-shaped slider, a spring, a latch head, and a guide.

[0007] The guide piece is arranged at one end of the grooved track close to the edge of the heavy door, and a window is provided on the bottom surface of the other end, through which the switch paddle extends, a pin shaft passes through the middle of the switch paddle, and both ends of the pin shaft are fixed to the grooved track on both sides of the middle of the window by rivets; one end of the switch paddle is a free end, and the other end is hinged to one end of the L-shaped connector; the switch paddle can rotate around the pin shaft;

[0008] A limiting piece is respectively provided inside the groove-type track on both sides of the window;

[0009] One end of the L-shaped slider is perpendicular to the groove track and abuts against the groove track to slide, and the other end is parallel to the groove track, and the spring is arranged in the middle thereof; the other end of the L-shaped connector has two branches, one branch is hinged to one end of the L-shaped slider, and the other branch is fixedly connected to the spring, the other end of the spring is fixedly connected to the latch head, and the other end of the latch head passes through the guide piece;

[0010] When a person manually moves the free end of the switch paddle at the window to place it in the "open" and "closed" positions, the L-shaped connector drives the latch head to be in the "open" and "closed" positions through the spring.

[0011] Furthermore, the limiting piece is a raised piece which is higher in the middle and lower on both sides.

[0012] Furthermore, a top screw is arranged under the latch head in the L-shaped sliding block for reinforcement to prevent the latch head from sliding out.

[0013] Furthermore, the hidden ceiling and ceiling latch is made of copper material.

[0014] The advantages of the utility model are: the utility model has a simple structure, is easy to operate and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 yes Figure 1 Rear view stereogram.

[0018] Figure 3 It is a side sectional view of the utility model in the door opening state.

[0019] Figure 4 It is a side sectional view of the utility model in a closed door state. DETAILED DESCRIPTION

[0020] like Figure 1 and Figure 2 As shown, a hidden top and bottom latch for heavy doors includes: a groove track 1, a switch paddle 2, an L-shaped connector 3, an L-shaped slider 4, a spring 5, a latch head 6, and a guide piece 7.

[0021] A guide piece 7 perpendicular to the track direction is arranged at one end of the groove track 1 close to the edge of the heavy door, and a window 8 is arranged on the bottom surface of the other end, and the switch paddle 2 extends from the window 8. A pin shaft (not shown) passes through the middle of the switch paddle 2, and both ends of the pin shaft are fixed to the groove track 1 on both sides of the middle of the window 8 by rivets 9; one end of the switch paddle 2 is a free end 21, and the other end 22 is hinged to one end of the L-shaped connecting piece 3; the switch paddle 2 can rotate around the pin shaft;

[0022] A limiting piece 10 is respectively arranged inside the grooved track 1 at both ends of the window 8. The limiting piece 10 is a raised piece that is high in the middle and low on both sides.

[0023] One end of the L-shaped slider 4 is perpendicular to the grooved track 1 and abuts against the grooved track 1 for sliding movement, and the other end is parallel to the grooved track 1, and a spring 5 is provided in the middle thereof; the other end of the L-shaped connector 3 has two branches, one branch 31 is hinged to one end of the L-shaped slider 4 perpendicular to the grooved track 1, and the other branch 32 is fixedly connected to the spring 5, and the other end of the spring 5 is fixedly connected to the latch head 6, and a top screw 11 is provided under the latch head 6 of the L-shaped slider 4 for reinforcement to prevent the latch head 6 from sliding out, and the other end of the latch head 6 passes through the guide piece 7.

[0024] The hidden top and bottom latch of the utility model is made of copper material.

[0025] like Figure 3 As shown, when a person manually moves the free end 21 of the switch paddle 2 at the window 8 to place it in the "open" position, the L-shaped connector 4 drives the latch head 6 to the "open" position through the spring 5; Figure 4 As shown, when a person manually moves the free end 21 of the switch paddle 2 at the window 8 to place it in the "off" position, the L-shaped connector 4 drives the latch head 6 to the "off" position through the spring 5.

[0026] The utility model has the advantages of simple structure, convenient operation and low manufacturing cost.

[0027] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A concealed top and bottom latch for heavy doors, characterized in that: include: A groove track, a switch paddle, an L-shaped connector, an L-shaped slider, a spring, a latch head, and a guide. The guide piece is arranged at one end of the grooved track close to the edge of the heavy door, and a window is provided on the bottom surface of the other end, through which the switch paddle extends, a pin shaft passes through the middle of the switch paddle, and both ends of the pin shaft are fixed to the grooved track on both sides of the middle of the window by rivets; one end of the switch paddle is a free end, and the other end is hinged to one end of the L-shaped connector; the switch paddle can rotate around the pin shaft; A limiting piece is respectively provided inside the groove-type track on both sides of the window; One end of the L-shaped slider is perpendicular to the groove track and abuts against the groove track to slide, and the other end is parallel to the groove track, and the spring is arranged in the middle thereof; the other end of the L-shaped connector has two branches, one branch is hinged to one end of the L-shaped slider, and the other branch is fixedly connected to the spring, the other end of the spring is fixedly connected to the latch head, and the other end of the latch head passes through the guide piece; When a person manually moves the free end of the switch paddle at the window to place it in the "open" and "closed" positions, the L-shaped connecting member drives the latch head to be in the "open" and "closed" positions through the spring.

2. A concealed top and bottom latch for a heavy door as claimed in claim 1, characterized in that: The limiting piece is a raised piece that is high in the middle and low on both sides.

3. A concealed top and bottom latch for a heavy door as claimed in claim 1, characterized in that: A top screw is arranged under the latch head in the L-shaped sliding block for reinforcement to prevent the latch head from sliding out.

4. A concealed top and bottom latch for a heavy door as claimed in claim 1, characterized in that: The hidden top and bottom latch is made of copper material.

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