Locking device

Abstract

The utility model relates to the technical field of door locks, in particular to a locking device which comprises a door body, a door leaf and a transmission shaft rotationally arranged on the door leaf, two ends of the transmission shaft are in key connection with a first handle and a second handle respectively, the first handle and the second handle are located on the inner side and the outer side of the door leaf respectively, and the first handle is provided with an extending lock head. A lock plate is arranged on the door body, the lock plate makes contact with the lock head and stops the lock head so as to stop the door leaf from rotating, so that the door leaf cannot be opened, a cylindrical part is arranged on the lock head, a positioning clamping groove matched with the cylindrical part is formed in the lock plate, and the cylindrical part is clamped into the positioning clamping groove to achieve locking. The positioning clamping groove is formed in the lock plate, the cylindrical piece corresponding to the lock head is clamped in the clamping groove, the locking effect is improved, and the probability that the lock head is disengaged from the lock plate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to door lock technical field, especially a locking device. BACKGROUND

[0002] The sealing performance of the sealing door is the key performance of various products, just like the patent no. CN211448104 U discloses a sealing device of a sealing door, which realizes locking by cooperation of a lock head and a lock plate. However, the lock head and the lock plate are in surface contact, and under the action of gravity or other external force for a long time, the lock head and the lock plate still have the risk of disengagement. SUMMARY

[0003] In order to solve the problem of the risk of disengagement of the lock head and the lock plate of the locking device in the prior art, the utility model provides a locking device which improves the locking effect and reduces the disengagement probability.

[0004] The utility model discloses the technical scheme adopted by the utility model solves technical problems:

[0005] A locking device, comprising a door body, a door leaf and a transmission shaft rotatably arranged on the door leaf, both ends of the transmission shaft are respectively keyed with a first handle and a second handle, the first handle and the second handle are respectively located on the inner side and the outer side of the door leaf, the first handle has an extended lock head, the door body is provided with a lock plate, the lock plate is in contact with the lock head and realizes the stop of the lock head, so as to block the rotation of the door leaf, so that the door leaf cannot be opened, the lock head is provided with a cylindrical part, the lock plate is provided with a positioning clamping groove matched with the cylindrical part, the cylindrical part is clamped into the positioning clamping groove, and the locking is realized.

[0006] Further, the positioning clamping groove is a cylindrical groove or a V-shaped groove.

[0007] Further, the cylindrical part is rotatably arranged on the lock head.

[0008] Further, the cylindrical part comprises a shaft sleeve sleeved on the lock head, and the shaft sleeve is provided with a limiting piece at the end portion for limiting the shaft sleeve.

[0009] Further, the limiting piece comprises a clamping spring arranged on the lock head.

[0010] Further, the inner side of the door leaf is provided with a connecting seat, the connecting seat is provided with a mounting hole in the center, the transmission shaft passes through the mounting hole, the inner side of the connecting seat is fixedly provided with a first bolt seat, the outer side of the door leaf is fixedly provided with a second bolt seat, the first bolt seat is provided with a limiting groove, and the first handle is fixedly provided with a limiting pin sliding along the limiting groove.

[0011] Beneficial effects:

[0012] (1) The utility model discloses a positioning clamping groove is set up on the lock plate, and the cylindrical part of the lock head is clamped in the positioning clamping groove, thereby improving the locking effect and reducing the probability of the lock head and the lock plate being separated.

[0013] (2) The rolling part is rotatably arranged on the lock head, and the cylindrical part can roll along the lock plate, thereby reducing the friction force.

[0014] (3) The rolling part can be a shaft sleeve and the like, which is low in cost and easy to realize.

[0015] (4) The connecting seat is fixedly arranged in the door leaf and used for fixing the bolt seat, and the limiting groove is arranged on the bolt seat, thereby increasing the overall strength and movement precision. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0017] Figure 1 The structure diagram of the locking device of the utility model;

[0018] Figure 2 For along Figure 1 The cross-sectional view of A-A;

[0019] Figure 3 For along Figure 1 The cross-sectional view of B-B;

[0020] Figure 4 The matching relationship diagram of the lock head and the lock plate of embodiment 1;

[0021] Figure 5 The matching relationship diagram of the lock head and the lock plate of embodiment 2.

[0022] 1, door leaf, 2, transmission shaft, 3, first handle, 4, lock head, 5, second handle, 6, lock plate, 61, positioning clamping groove, 7, shaft sleeve, 8, clamping spring, 9, connecting seat, 10, first bolt seat, 11, second bolt seat, 12, limiting pin. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and in no way should be construed as any limitation on the present application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0025] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not necessary once an item is defined in one drawing.

[0026] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0027] For the purposes of the description, relative terms such as "on", "above", "upper surface", "top", and the like can be used to describe a spatial or positional relationship between one device or feature to another device or feature as illustrated in the figures. It is to be understood that the relative terms are intended to encompass different orientations of the devices in their use or operation, in addition to the orientations depicted in the figures. For example, if a device in the figures is turned over, then a device described as "above" or "on" other devices or structures can then be oriented "below" or "on" the other devices or structures. Accordingly, the exemplary term "above" can encompass both an orientation of above and below. The devices can be oriented in other ways (rotated 90 degrees or at other orientations) and the spatial or positional descriptions herein interpreted accordingly.

[0028] In addition, it should be noted that the use of "first", "second", and the like words of distinction are used only to facilitate the differentiation of the respective components, and do not have a special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the utility model.

[0029] As Figures 1-5 , a locking device of the utility model, including door body, door leaf 1 and transmission shaft 2 rotationally arranged on door leaf 1, the both ends of transmission shaft 2 are respectively keyed with first handle 3 and second handle 5, first handle 3 and second handle 5 are respectively located on the inner side and the outer side of door leaf 1, first handle 3 has the extension lock head 4, and the door body is provided with lock plate 6, lock plate 6 contacts lock head 4 and realizes the stop of it, to block the rotation of door leaf 1, so that door leaf 1 cannot be opened, and lock head 4 is provided with cylindrical part, and lock plate 6 is provided with the positioning clamping groove 61 matched with cylindrical part, cylindrical part is clamped into positioning clamping groove 61, and locking is realized.

[0030] As an embodiment, positioning clamping groove 61 can be set as the cylindrical groove as shown in Figure 4 , and as a second embodiment, it can also be set as the V-shaped groove as shown in Figure 5 .

[0031] Cylindrical part is rotationally arranged on lock head 4. In this way, cylindrical part can roll along lock plate 6, and the friction force is reduced.

[0032] Cylindrical part includes shaft sleeve 7 sleeved on lock head 4, and the end of shaft sleeve 7 is provided with limiting part for limiting it. As an embodiment, limiting part includes snap spring 8 arranged on lock head 4.

[0033] The door leaf 1 is internally bored, and the bore is provided with a connecting seat 9, the connecting seat 9 is provided with a mounting hole in the center, the transmission shaft 2 passes through the mounting hole, the first bolt seat 10 is fixed in the connecting seat 9, the second bolt seat 11 is fixed on the outside of the door leaf 1, the first bolt seat 10 is provided with a limiting slot, and the first handle 3 is fixed with a limiting pin 12 sliding along the limiting slot. The limiting pin 12 slides along the limiting slot, and the overall movement precision is improved.

[0034] The inner end and the outer end of the transmission shaft 2 are respectively provided with a first end cover and a second end cover, the second handle 5 is fixedly connected with the second end cover, and the first end cover is fixedly connected with the transmission shaft 2. The first bolt seat 10 is provided with a first sealing ring between the first bolt seat 10 and the transmission shaft 2, and the second bolt seat 11 is provided with a second sealing ring between the second bolt seat 11 and the transmission shaft 2. The first bolt seat 10 and the door leaf 1 are provided with fireproof expansion pads, and the second bolt seat 11 and the door leaf 1 are provided with fireproof expansion pads.

[0035] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A locking device, characterized by: The utility model relates to a door handle, which comprises a door body, a door leaf (1) and a transmission shaft (2) rotatably arranged on the door leaf (1), the two ends of the transmission shaft (2) are respectively keyed with a first handle (3) and a second handle (5), the first handle (3) and the second handle (5) are respectively located on the inner side and the outer side of the door leaf (1), the first handle (3) has an extended lock head (4), the door body is provided with a lock plate (6), the lock plate (6) is in contact with the lock head (4) and realizes the stop of the lock head (4), so as to block the rotation of the door leaf (1), so that the door leaf (1) cannot be opened, the lock head (4) is provided with a cylindrical part, the lock plate (6) is provided with a positioning clamping groove (61) matched with the cylindrical part, the cylindrical part is clamped into the positioning clamping groove (61), and locking is realized.

2. A locking device according to claim 1, characterised in that: The positioning clamping groove (61) is a cylindrical groove or a V-shaped groove.

3. A locking device according to claim 1, wherein: The cylindrical part is rotatably arranged on the lock head (4).

4. A locking device according to claim 1, wherein: The cylindrical part comprises a shaft sleeve (7) sleeved on the lock head (4), and the end of the shaft sleeve (7) is provided with a limiting part for limiting the shaft sleeve (7).

5. A locking device according to claim 4, wherein: The limiting part comprises a clamping spring (8) arranged on the lock head (4).

6. A locking device according to claim 1, wherein: The door leaf (1) is provided with a connecting seat (9) in a hole, the connecting seat (9) is provided with a mounting hole in the center, the transmission shaft (2) passes through the mounting hole, the first bolt seat (10) is fixed to the inner side of the connecting seat (9), the second bolt seat (11) is fixed to the outer side of the door leaf (1), the first bolt seat (10) is provided with a limiting groove, and the first handle (3) is fixed with a limiting pin (12) sliding along the limiting groove.

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