Self-locking limiting mechanism

Abstract

The utility model discloses a self-locking limiting mechanism which comprises a vertically-installed fixed plate, a movable plate and a movable tongue, the movable plate comprises an inner end and a movable outer end, the movable plate is attached to the side face of the fixed plate, the inner end of the movable plate is movably hinged to one end of the fixed plate, and the movable outer end of the movable plate is obliquely provided with a movable tongue groove; the outer end of the side face of the fixing plate is provided with an arc-shaped protruding block in a protruding mode, and the end face of the inner side of the arc-shaped protruding block forms a movable sliding way. A clamping groove, a retraction slide way and a closing contact block are sequentially arranged in the middle of the movable slide way backwards. And when the movable tongue moves to the clamping groove, the movable tongue groove vertically corresponds to the clamping groove. According to the technical scheme, the movable tongue is matched with the movable slide way, and unpowered repeated self-locking can be achieved without mechanical reset under the action of gravity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self-locking limiting mechanism. BACKGROUND

[0002] For the existing one kind of over -turning type's overhauling flip, needs the overhauling flip of top over -turning open after limiting and fixing, the inside device is conveniently overhauled from the top. The existing self-locking limiter is complicated in structure, high in purchase cost, or is suitable for the door and window limiter of side opening, and cannot be applied to the over -turning cover. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a self-locking limiting mechanism which is simple in structure and suitable for over -turning cover.

[0004] The utility model discloses a kind of self-locking limiting mechanisms to achieve the above-mentioned purposes, and specifically by following technical solutions:

[0005] A self-locking limiting mechanism, including vertically installed fixed plate, movable plate and movable tongue, movable plate includes inner end and movable outer end, movable plate and fixed plate side surface are attached, and the inner end is movably connected with one end of fixed plate, and movable outer end of movable plate is obliquely provided with movable tongue slot;

[0006] Fixed plate side surface outer end is provided with arc-shaped lug, and the inner side surface of arc-shaped lug forms movable slide, one end of movable tongue is embedded in movable tongue slot, and the other end is in contact with movable slide;Movable slide middle part is sequentially provided with clamping groove, retraction slide and closing contact block;When movable tongue moves to clamping groove, movable tongue slot and clamping groove are vertically corresponding.

[0007] Further, the fixed plate and the movable plate are both fan-shaped structures, the fan-shaped radius of the fixed plate is greater than the fan-shaped radius of the movable plate, and the two are hingedly connected at the center of the fan-shaped circle.

[0008] Further, the arc-shaped lug is a fan ring.

[0009] Further, the fan-shaped angle of the fixed plate is 80°-100°, the front end surface of the fan-shaped circle is vertically arranged, and the included angle between the starting angle of the clamping groove of the fixed plate and the front end surface is 40°-50°.

[0010] Further, the opening contact groove and the closing clamping groove are arranged on the outer bottom of the movable tongue slot, and the opening contact block matched with the opening contact groove is horizontally arranged on the front end of the fixed plate.

[0011] Further, the included angle between the inner side surface of the front side of the movable tongue slot and the front end surface of the movable plate is 40°-50°.

[0012] Further, the included angle between the two inner side surfaces of the movable tongue slot is 10°-20°.

[0013] The technical scheme of the utility model discloses the cooperation of movable tongue and movable slide, under the action of gravity, no mechanical reset is needed to realize power-free repeated self-locking. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is initial state structure schematic diagram of self-locking limiting mechanism of the utility model;

[0015] Figure 2 It is opening process state structure schematic diagram of self-locking limiting mechanism;

[0016] Figure 3 It is movable tongue limiting state structure schematic diagram of self-locking limiting mechanism;

[0017] Figure 4 It is movable tongue retracting process structure schematic diagram of self-locking limiting mechanism;

[0018] Figure 5 It is movable tongue retracting state structure schematic diagram of self-locking limiting mechanism. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and examples.

[0020] In the description of the utility model embodiment, it needs to be explained that the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model embodiment and simplifying the description, and therefore cannot be understood as the restriction on the utility model embodiment that the indicated device or element must have the specific orientation, the specific orientation structure and operation.

[0021] In the description of the utility model embodiment, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through the intermediate medium. For the person skilled in the art, the specific meaning of the above terms in the utility model embodiment can be understood according to the specific circumstances.

[0022] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature can be "under", "below" and "underneath" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0024] As shown in Figures 1 to 5 The present application discloses a self-locking limiting mechanism, which comprises a vertical fixed plate 1, a movable plate 2 and a movable tongue 3. The movable plate 2 comprises an inner end portion 21 and a movable outer end portion 22. The fixed plate 1 is fixedly installed on the side wall of the flip-up cover box. The movable plate 2 is installed on one side of the flip-up cover. The movable plate 2 is attached to the side of the fixed plate 1. The inner end portion 21 of the movable plate 2 is movably connected to one end of the fixed plate 1. When the flip-up cover is lifted and opened, the movable plate 2 and the fixed plate 1 form an angular misalignment around the hinge, thereby realizing the opening of the flip-up cover. The movable outer end portion 22 of the movable plate 2 is obliquely provided with a movable tongue groove 23. Preferably, the two inner sides of the movable tongue groove 23 form an angle of 10-20 degrees. The movable tongue groove 23 is used for placing the movable tongue 3. The movable tongue 3 can be flexibly moved up, down, left and right in the movable tongue groove 23 according to the rotation angle.

[0025] An arc-shaped protrusion 11 is provided on the outer end of the side of the fixed plate 1. The inner side of the arc-shaped protrusion 11 forms a movable slide 12. One end of the movable tongue 3 is embedded in the movable tongue groove 23, and the other end is abutted and matched with the movable slide 12. The movable outer end portion 22 of the movable plate 2 can rotate around the inner end portion 21, thereby driving the outer end face of the outer movable tongue 3 to abut along the movable slide 12, so that the movable tongue 3 moves in the movable tongue groove 23.

[0026] The middle part of the movable slide 12 is sequentially provided with a clamping groove 121, a retracting slide 122 and a closing contact block 123 from back to front; when the flip cover is pulled up, the movable plate 2 rotates upward around the hinge shaft as the center, the movable tongue 3 moves to the clamping groove 121, the movable tongue groove 23 is vertically corresponding to the clamping groove 121, and the movable tongue 3 in the movable tongue groove 23 can fall into the clamping groove 121 under the action of gravity, reversely clamped, thereby limiting the return stroke of the flip cover, achieving the purpose of self-locking. When the flip cover needs to return to release the self-locking, the movable tongue 3 needs to be separated from the clamping groove 121 first, and the flip cover can be continuously pulled up, that is, the angle of the fixed plate 1 and the movable plate 2 is increased, the outer end surface of the movable tongue 3 abuts against the retracting slide 122, and the movable tongue 3 is retracted into the movable tongue groove 23, and the flip cover abuts against the closing contact block 123, so that the movable tongue 3 is completely retracted into the movable tongue groove 23 under the closing clamping groove 25, and the flip cover will not be stretched out again under the action of gravity when the flip cover is closed and returns, thereby achieving the unlocking of the limiting.

[0027] Preferably, the fixed plate 1 and the movable plate 2 are both fan-shaped structures, the fan-shaped radius of the fixed plate 1 is larger than that of the movable plate 2, and the two are hingedly connected at the center of the fan-shaped structure. Further preferably, the arc-shaped protrusion is a fan ring, which is matched with the fan-shaped structure of the fixed plate 1 and the movable outer end of the movable plate 2.

[0028] Preferably, the fan-shaped angle of the fixed plate 1 is 80°-100°, the front end surface of the fan-shaped structure is vertically arranged, and the included angle between the starting angle of the clamping groove of the fixed plate 1 and the front end surface is 40°-50°. Further preferably, the included angle between the inner side surface of the front side of the movable tongue groove and the front end surface of the movable plate is 40°-50°. The angle is ensured to meet the stroke angle of the flip cover and the position corresponding to the falling of the movable tongue 3 under the action of gravity, thereby achieving flexible opening and closing and limiting.

[0029] Preferably, the outer side bottom of the movable tongue groove 23 is provided with an opening contact groove 24 and a closing clamping groove 25, and the front end of the fixed plate 1 is transversely provided with an opening contact block 13 matched with the opening contact groove 24. When the flip cover is closed, the movable tongue 3 is pushed out and abuts against the movable slide 12 by the opening contact block 13, and when the flip cover is pulled up, the opening contact block 13 is away from the closing clamping groove 25 and slides to the front part of the movable slide 12.

[0030] When the flip cover is closed and the movable tongue 3 rotates downward to the position of the opening contact groove 24, the movable tongue 3 is pushed out of the closing clamping groove 25 by the opening contact block 13 again, thereby achieving the purpose of repeated self-locking without power.

[0031] The specific embodiments in the utility model are only an explanation of the utility model, and are not a limitation of the utility model, and the person skilled in the art can make non-creative contribution modifications to the embodiments according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A self-locking limiting mechanism, characterized in that, It includes a vertically installed fixed plate (1), a movable plate (2) and a movable tongue (3). The movable plate includes an inner end (21) and a movable outer end (22). The movable plate is attached to the side of the fixed plate and is movably hinged to one end of the fixed plate through the inner end. The movable outer end of the movable plate has a movable tongue groove (23). An arc-shaped protrusion (11) is provided on the outer side of the fixed plate. The inner end face of the arc-shaped protrusion forms a movable slide (12). One end of the movable tongue is embedded in the movable tongue groove, and the other end abuts against the movable slide. A locking groove (121), a retractable slide (122), and a closing contact block (123) are arranged sequentially from the middle of the movable slide. When the movable tongue moves to the locking groove, the movable tongue groove and the locking groove are vertically aligned.

2. The self-locking limiting mechanism according to claim 1, characterized in that, Both the fixed plate and the movable plate are fan-shaped structures, with the fixed plate having a larger fan radius than the movable plate. The two are hinged at the center of the fan by a pivot.

3. The self-locking limiting mechanism according to claim 1 or 2, characterized in that, The arc-shaped protrusion is a fan-shaped ring.

4. The self-locking limiting mechanism according to claim 2, characterized in that, The fan-shaped angle of the fixing plate is 80°-100°, and the front end face of the fan-shaped plate is set vertically. The angle between the starting point angle of the fixing plate's slot and the front end face is 40°-50°.

5. The self-locking limiting mechanism according to claim 1, characterized in that, An opening contact groove (24) and a closing slot (25) are provided at the bottom of the outer side of the movable tongue groove, and an opening contact block (13) that cooperates with the opening contact groove is provided at the front end of the fixed plate.

6. The self-locking limiting mechanism according to claim 1, characterized in that, The angle between the inner side of the front side of the movable tongue groove and the front end face of the movable plate is 40°-50°.

7. The self-locking limiting mechanism according to claim 1, characterized in that, The included angle between the two inner sides of the movable tongue groove is 10°-20°.

Images