A two-way lock

Abstract

The present invention discloses a two-way lock. The two-way lock comprises a first lock body, a second lock body and a latch. The first lock body is frame-shaped and can move between a locked position and an unlocked position. The second lock body is frame-shaped and comprises a support member spanning two opposite sides of the second lock body, the second lock body is arranged parallel to the first lock body and is arranged above the first lock body, and a predetermined height is spaced between the two. The latch member is annular, and the annular latch member surrounds the support member and can rotate around the support member. The two-way lock of the present invention can implement locking and unlocking operations in two directions of passage, which is convenient for passage. The two-way ring lock will not fail due to corrosion or other damage caused by environmental reasons, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to a lock, in particular to a two-way lock. Background Art

[0002] In petroleum and petrochemical plants, the connection between stairs and platforms often causes people to fall from the platform due to improper protection measures or lack of protection measures, resulting in serious safety accidents such as casualties.

[0003] Some prior art technologies add a self-closing railing door structure to a steel ladder. The self-closing railing door uses a self-closing hinge or a single-tube spring hinge to achieve the function of automatically closing the railing door. For open-air steel ladders, the hinges and springs will be damaged due to environmental corrosion, lose the self-closing function, and cause the self-closing railing door to fail, posing a safety hazard. For the use of inclined ladders, the prior art has not taken effective measures to prevent the occurrence of dangerous situations. Moreover, the existing self-closing railing door structures are usually one-way structures. When people pass with their backs to the road, they have to bear the gravity of the self-closing railing door or the rebound force of the spring in the hinge, causing difficulty in passing.

[0004] Therefore, there is still room for improvement in ensuring the safety of the connection between stairs and platforms. Summary of the invention

[0005] In view of the above problems, the present invention provides a two-way lock which can achieve all the functions of a self-closing railing door without complicated operations and solves many disadvantages of the self-closing railing door.

[0006] According to one aspect of the present invention, there is provided a two-way lock, the two-way lock comprising:

[0007] A first lock body, which is frame-shaped and movable between a locked position and an unlocked position;

[0008] a second lock body, the second lock body being frame-shaped and comprising a support member spanning two opposite sides of the second lock body, the second lock body being arranged parallel to the first lock body and arranged above the first lock body, and being spaced apart by a predetermined height;

[0009] The latch is annular and surrounds the support and can rotate around the support.

[0010] According to an embodiment of the present invention, the first lock body is a rectangular frame.

[0011] According to an embodiment of the present invention, the second lock body is a rectangular frame.

[0012] According to an embodiment of the present invention, the long side of the first lock body is parallel to the long side of the second lock body.

[0013] According to an embodiment of the present invention, the dimensions of the long sides of the first lock body and the second lock body are both larger than the outer diameter of the annular latch element.

[0014] According to an embodiment of the present invention, the predetermined height of the interval between the first lock body and the second lock body is equal to the thickness of the ring body of the latch member.

[0015] According to an embodiment of the present invention, the latch is in a circular ring shape.

[0016] According to an embodiment of the present invention, two longer frames of the rectangular second lock body are connected to the support member, and the distance between two shorter frames and the support member is greater than half of the outer diameter of the annular latch member.

[0017] According to an embodiment of the present invention, the distance between the frame closer to the first lock body among the two shorter frames of the second lock body and the support is smaller than the difference between the outer diameter of the circular ring and the thickness of the circular ring.

[0018] According to an embodiment of the present invention, the distance between the frame farther away from the first lock body among the two shorter frames of the second lock body and the support member is greater than the difference between the outer diameter of the circular ring and the thickness of the circular ring.

[0019] Due to the above structure, the two-way lock of the present invention can achieve the following multiple beneficial effects:

[0020] (1) Simple operation, the lock can be opened and closed with one hand;

[0021] (2) The structure is simple and can be welded on site. No complicated mechanical equipment is required and one person can complete the entire production process.

[0022] (3) Unlike ordinary chain lock structures, which have scattered parts, its structure is complete and easy to manage;

[0023] (4) Low cost: if it is made at the construction site, it can be made using scraps without increasing costs;

[0024] (5) Locking and unlocking operations can be performed in both directions of passage, which is convenient for passage; the two-way ring lock will not fail due to corrosion or other damage caused by environmental reasons;

[0025] (6) It has a wide range of applications and can be used in places with the same needs, such as factory gates and other application occasions. It can be used not only on steel straight ladders, but also on inclined ladders. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a two-way lock according to an embodiment of the present invention;

[0027] Figure 2A is a schematic diagram of various components of a two-way lock according to an embodiment of the present invention;

[0028] Figure 2B is a front view of a two-way lock according to an embodiment of the present invention;

[0029] Figures 3A-3F Schematic diagram of the operation process of a two-way lock according to an embodiment of the present invention.

[0030] In the figure:

[0031] 100 first lock body, 200 second lock body, 300 latch member, 210 support member, 220 rectangular frame. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] As required, specific embodiments of the present invention are disclosed in the present specification; however, it should be understood that the embodiments disclosed herein are merely examples of the present invention that can be implemented in multiple, alternative forms. The drawings need not be drawn to scale; some features may be enlarged or reduced to show the details of specific components. The same or similar reference numerals may indicate the same parameters and components or similar modifications and alternatives thereto. In the description below, multiple operating parameters and components are described in multiple contemplated embodiments. These specific parameters and components are used in this specification only as examples and are not meant to be limiting. Therefore, the specific structural and functional details disclosed in this specification should not be understood as limitations, but merely as a representative basis for teaching those skilled in the art to implement the present invention in multiple forms.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Figure 1-2BA schematic diagram of a two-way lock according to an embodiment of the present invention is shown. The two-way lock generally includes a first lock body 100, a second lock body 200 and a latch 300. In this embodiment, the first lock body 100 is in the shape of a rectangular frame, and the rectangular frame includes four frames and a hollow area surrounded by the four frames connected end to end. The second lock body 200 is also in the shape of a rectangular frame, and the rectangular frame includes four frames and a hollow area surrounded by the four frames connected end to end. The second lock body 200 also includes a support member 210 that spans two opposite sides of the rectangular frame. In this embodiment, the support member 210 is a support rod. The latch 300 is generally in the shape of a circular ring. The circular latch 300 surrounds the support rod and can roll around the support rod.

[0036] The first lock body 100 is parallel to the second lock body 200 and the height difference between the two is a predetermined distance d1 (reference Figure 2B ). The size of d1 can be approximately equal to the thickness of the ring of the latch 300. The length direction of the first lock body 100 and the second lock body 200 is consistent. The first lock body 100 can be in the unlocked position ( Figure 1 shown) and locked position ( Figure 3F In the unlocked position, the first lock body 100 is relatively far from the latch 300, and the latch 300 is not inserted into the hollow area of ​​the first lock body 100. In the locked position, as shown Figure 3F As shown, the latch member 300 is inserted into the hollow area of ​​the first lock body 100 .

[0037] refer to Figure 2A , the first lock body 100 includes two opposite long sides and two opposite short sides, and the size of the two opposite long sides is larger than the outer diameter D of the circular latch 300. The second lock body 200 also includes two opposite long sides and two opposite short sides. The support rod divides the hollow area of ​​the second lock body 200 into two parts, one of which is closer to the first lock body 100 (in the unlocked position) and the other is farther from the first lock body 100. The length d2 of the part closer to the first lock body 100 is larger than the radius of the outer diameter D of the circular latch 300, but smaller than the difference (i.e. DT) between the outer diameter D of the circular latch 300 and the thickness (T) of the circular ring. The length d3 of the part farther from the first lock body 100 is larger than the difference (i.e. DT) between the outer diameter D of the circular latch 300 and the thickness (T) of the circular ring.

[0038] exist Figure 1-2B In the illustrated embodiment, although the first lock body 100 and the second lock body 200 are in a rectangular frame shape, the scope of the present invention is not limited thereto. The first lock body 100 and the second lock body 200 may also adopt other shapes, for example, a quadrilateral with arcs, the two long sides of the quadrilateral are parallel, and the two short sides are two arcs. Similar shapes can also implement the bidirectional lock of the present invention.

[0039] Figures 3A-3F A schematic diagram showing the operation process of a two-way lock according to an embodiment of the present invention.

[0040] refer to Figure 3A In this figure, the first lock body 100 is in the unlocked position. At this position, the latch 300 has not yet been inserted into the hollow area of ​​the first lock body 100. The first lock body 100 is moved to approach the latch 300. The first lock body 100 begins to contact the latch 300, and the first lock body 100 is continued to be moved. The latch 300 is pushed by the first lock body 100 to roll with the support rod as the axis.

[0041] like Figure 3B As shown in FIG. 1 , the latch 300 rolls toward the upper side and the right side as shown in the figure during the rolling process around the support rod. The first lock body 100 is continuously moved, and the latch 300 continues to roll around the support rod. Figure 3C As shown, the portion of the latch member 300 above the second lock body 200 increases.

[0042] like Figure 3D As shown, the latch 300 rolls to the highest position. At this time, the latch 300 is tangent to the first lock body 100. Since the thickness of the latch 300 is approximately equal to the height difference between the first lock body 100 and the second lock body 200, the latch 300 is sandwiched between the first lock body 100 and the second lock body 200. In this state, the latch 300 is temporarily maintained in this state.

[0043] like Figure 3E As shown in FIG. 1 , the first lock body 100 is continuously moved. When the hollow area of ​​the first lock body 100 is directly below the latch 300, the latch 300 rolls to the left or remains at the highest position according to the size of d2. When the size of the hollow area of ​​the first lock body 100 below the latch 300 allows the latch 300 to be inserted, the latch 300 falls into the hollow area of ​​the first lock body 100 under the action of gravity, as shown in FIG. Figure 3F In this state, when the first lock body 100 is pulled to the left, since the size of d2 is smaller than the difference (i.e., DT) between the outer diameter D of the annular latch 300 and the thickness (T) of the annular ring, the first lock body 100 can be prevented from being separated from the latch 300, thereby achieving the locking of the first lock body 100 and the second lock body 200.

[0044] When the first lock body 100 and the second lock body 200 need to be unlocked, the latch 300 is manually lifted, the first lock body 100 is pulled to the left to move to the unlocking position, and the latch 300 is released, and the two-way lock returns to the unlocking position. Figure 3A Shown in unlocked position.

[0045] The bidirectional lock of the present invention can be locked and unlocked in both directions of passage, which is convenient for passage. The bidirectional ring lock will not fail due to corrosion or other damage caused by environmental reasons, and has a wide range of applications. It can be used in places with the same requirements, such as factory gates, and can be used not only on steel straight ladders, but also on inclined ladders.

[0046] It should be understood that, where technically feasible, the technical features listed above for different embodiments can be combined with each other to form other embodiments within the scope of the present invention. In addition, the specific examples and embodiments described herein are non-limiting, and the structures, dimensions, and materials described above can be modified accordingly without departing from the scope of protection of the present invention.

[0047] In this application, the use of disjunctive conjunctions is intended to include conjunctions. The conjunction "or" may be used to convey simultaneous features, rather than mutually exclusive solutions. In other words, the conjunction "or" should be understood to include "and / or". The term "include" is inclusive and has the same scope as "comprises".

[0048] The above-described embodiments, particularly any "preferred" embodiments, are possible examples of implementations and are presented only for a clear understanding of the principles of the present invention. Many changes and modifications may be made to the above-described embodiments without substantially departing from the spirit and principles of the technology described herein. All modifications are intended to be included within the scope of the present disclosure.

Claims

1. A two-way lock, It is characterized in that include: A first lock body, which is frame-shaped and movable between a locked position and an unlocked position; A second lock body, the second lock body is frame-shaped and includes a support member spanning two opposite sides of the second lock body, the second lock body is arranged parallel to the first lock body and arranged above the first lock body, and a predetermined height is spaced therebetween, and the second lock body is a rectangular frame; a latch, the latch being in an annular shape, surrounding the support and being rotatable around the support, The predetermined height between the first lock body and the second lock body is equal to the thickness of the ring body of the latch member; The two longer frames of the rectangular second lock body are connected to the support member, and the distance between the two shorter frames and the support member is greater than half of the outer diameter of the circular latch member, and the distance between the frame of the two shorter frames of the second lock body that is closer to the first lock body and the support member is smaller than the difference between the outer diameter of the circular latch member and the thickness of the circular latch member.

2. The two-way lock according to claim 1, It is characterized in that The first lock body is a rectangular frame.

3. The two-way lock according to claim 1, It is characterized in that The long side of the first lock body is parallel to the long side of the second lock body.

4. The two-way lock according to claim 3, It is characterized in that The dimensions of the long sides of the first lock body and the second lock body are both larger than the outer diameter of the annular latch element.

5. The two-way lock according to claim 1, It is characterized in that A distance between a frame of the two shorter frames of the second lock body, which is farther away from the first lock body, and the support member is greater than a difference between an outer diameter of the annular latch member and a thickness of the annular latch member.

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