Door stopper

Abstract

The utility model relates to the technical field of hardware for doors, and discloses a door stopper, which comprises a door stopper seat, a door stopper and a door stopper, the spring bolt is hinged in the mounting groove through a first shaft, and a limiting groove is formed in the outer end of the spring bolt; a limiting shaft capable of entering the limiting groove is arranged on one side of the door suction head; the shaft seat is fixedly arranged on the door stopper head, a second spring is arranged in the shaft seat, the limiting shaft is arranged in the shaft seat in a sliding mode in the axial direction, and the second spring applies acting force towards the outer end to the limiting shaft; an inclined guide face opposite to the outer end of the limiting shaft is formed on the side face of the spring bolt. When the door stopper is in a door closing state, if the spring bolt is rotated by misoperation of people, the limiting groove does not face the limiting shaft any more, and the limiting shaft can continuously enter the limiting groove under the guide of the guide surface to realize locking when the door is opened.

Description

[0001] This utility model is a divisional application of a Chinese patent application with the application number 202421293784.7, titled "Door Stopper", which was filed with the Chinese Patent Office on June 6, 2024. Technical Field

[0002] This utility model relates to the technical field of door hardware, and specifically, to a door stopper. Background Art

[0003] In the prior art, door stoppers mostly adopt structures such as column type, suction plate type, vertical and horizontal type, and electromagnetic and electric type. Among them, the electromagnetic and electric door stopper has too high manufacturing cost and too complex internal structure, which is not suitable for most families; the column type door stopper will generate a large impact force when sucking, and a great pulling force when opening the door, with uneven force, but has a small bearing capacity for impact and pulling forces, and it is also easy to damage the door and door frame if often used like this; the suction plate type door stopper has low suction efficiency because the suction direction is inconsistent with the movement direction of the door leaf, and the door stopper has little effect. Therefore, a door stopper that can effectively bear and reduce impact and pulling forces and has a lower manufacturing cost is needed.

[0004] The Chinese patent application with the authorization announcement number CN219299032U discloses a door stopper. Although it has a buffering function, there is a use defect that after accidentally touching the lock tongue, it cannot automatically reset, resulting in the door stopper seat and the door stopper head being unable to adsorb together. Only by dialing the lock tongue back to its original position can it be used normally, which brings inconvenience to users. Moreover, the elastic telescopic member needs to swing back and forth in the seat body, resulting in a relatively large thickness of the seat body, increasing the production cost, and having a relatively high requirement for the installation space of the door stopper, and a relatively large space is required to install this door stopper. Summary of the Utility Model

[0005] This utility model provides a door stopper to solve at least one of the above technical problems.

[0006] To achieve the above object, this utility model provides a door stopper, including: a door stopper seat with an installation groove formed in the middle; a damper fixedly arranged in the installation groove; a lock tongue hinged in the installation groove via a first shaft, and a limiting groove is formed at the outer end; a connecting rod, one end of which is hinged to the telescopic end of the damper via a second shaft, and the other end is eccentrically hinged to the lock tongue via a third shaft; a first spring arranged in the installation groove and applying a force towards the lock tongue to the telescopic end; a door stopper head, with a limiting shaft on one side that can enter the limiting groove; wherein when the third shaft is on one side of the straight line connecting the first shaft and the second shaft, the limiting groove faces the limiting shaft; when the door stopper seat and the door stopper head approach each other, the limiting shaft enters the limiting groove and drives the lock tongue to rotate until the third shaft is on the other side of the straight line connecting the first shaft and the second shaft.

[0007] Preferably, a sliding hole is provided on the side wall of the installation groove, and the telescopic end is slidably arranged in the sliding hole via the second shaft.

[0008] Preferably, the third shaft is arranged at the inner end of the locking tongue, and the outer end of the locking tongue extends outside the installation groove.

[0009] Preferably, the first spring is a compression spring sleeved on the damper, one end of which is fixed and the other end abuts against the telescopic end.

[0010] Preferably, a first buffer member is provided on the side wall of the limiting groove.

[0011] Preferably, a second buffer member opposite to the locking tongue is provided on the inner wall of the installation groove.

[0012] Preferably, it further includes: a shaft seat fixedly arranged on the door sucker head, a second spring is arranged inside it, the limiting shaft is slidably arranged in the shaft seat along the axial direction, and the second spring applies a force towards the outer end to the limiting shaft; wherein an inclined guiding surface is formed on the side surface of the locking tongue. When the third shaft is on the other side of the connecting line between the first shaft and the second shaft, if the door sucker seat and the door sucker head approach each other, the outer end surface of the limiting shaft will abut against the guiding surface and retract into the shaft seat until it is opposite to the limiting groove, and then enter the limiting groove under the action of the second spring.

[0013] Preferably, two opposite shaft seats and limiting shafts are provided on the door sucker head in total; two opposite guiding surfaces are formed on the side surface of the locking tongue.

[0014] Preferably, the outer end surface of the limiting shaft is an inclined surface or an arc surface.

[0015] Preferably, it further includes: an outer cover covering the outer periphery of the door sucker seat, and a through hole for the locking tongue to extend outwards is provided at one end.

[0016] According to the above description and practice, the door sucker of the present utility model fixedly arranges a damper that plays a buffering role in the door sucker seat, and indirectly connects with the locking tongue through a connecting rod, and the locking tongue can rotate within a preset range when locking. When locking or unlocking, the damper can play a role in buffering and absorbing impact energy, enabling the door sucker to lock and unlock more smoothly, avoiding instantaneous large impact forces and tensile forces, prolonging the service life of the door sucker, and protecting the door frame as well as the floor and wall. In addition, the damper only expands and contracts in the door sucker seat, avoiding the situation of reciprocating swing left and right, capable of reducing the thickness of the door sucker seat, reducing the manufacturing cost to a certain extent, and reducing the requirement for the installation space. Description of the Drawings

[0017] Figure 1 Schematic three-dimensional structure diagram of the door stopper involved in an embodiment of the present utility model.

[0018] Figures 2 to 6 Schematic cross-sectional structure diagram of the door stopper involved in an embodiment of the present utility model, which shows the process of locking when the door stopper base and the door stopper head approach each other.

[0019] Figure 7 Schematic cross-sectional structure diagram of the door stopper base in the door stopper involved in an embodiment of the present utility model.

[0020] Figure 8 Schematic structure diagram of the locking tongue in the door stopper involved in an embodiment of the present utility model.

[0021] The reference numerals in the figure are:

[0022] 11, door stopper base; 12, damper

[0023] 13, locking tongue; 14, connecting rod

[0024] 15, door stopper head; 16, limiting shaft

[0025] 17, shaft seat; 21, first spring

[0026] 22, second spring; 31, first shaft

[0027] 32, second shaft; 33, third shaft

[0028] 34, fourth shaft; 41, first buffer

[0029] 42, second buffer; 111, installation groove

[0030] 112, sliding hole; 121, telescopic end

[0031] 131, limiting groove; 132, guiding surface Detailed implementation manners

[0032] Now, exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0033] In addition, the attached drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "provided on" are used to mean an open inclusion, and it means that there may be additional elements, components, etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as labels and are not restrictions on the quantity or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.

[0034] Unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In this embodiment, a door stopper is disclosed. Please refer to Figures 1 to 6 , the door stopper includes a door stopper base 11, a damper 12, a locking tongue 13, a connecting rod 14, a first spring 21, and a door stopper head 15. Wherein, an installation groove 111 is formed in the middle of the door stopper base 11 for accommodating structures such as the damper 12, the locking tongue 13, the connecting rod 14, and the first spring 21. Specifically, the damper 12 is fixedly arranged in the installation groove 111, and its telescopic end 121 can telescopically move in the installation groove 111. The locking tongue 13 is hinged in the installation groove 111 via a first shaft 31, and a limiting groove 131 is formed at the outer end of the locking tongue 13 for cooperating with the door stopper head 15 to achieve the locking function.

[0036] The connecting rod 14 is used to connect the telescopic end 121 of the damper 12 with the locking tongue 13. Specifically, one end of the connecting rod 14 is hinged to the telescopic end 121 of the damper 12 via the second shaft 32, and the other end of the connecting rod 14 is eccentrically hinged to the locking tongue 13 via the third shaft 33. The eccentricity means that the third shaft 33 deviates from the rotation axis of the locking tongue 13, that is, it deviates from the first shaft 31. Therefore, when the locking tongue 13 rotates, it can drive the telescopic end 121 of the damper 12 to expand and contract through the connecting rod 14. The first spring 21 is arranged in the mounting groove 111 and applies a force towards the locking tongue 13 side to the telescopic end 121 of the damper 12, so that after the locking tongue 13 finishes rotating, it can be stably in its position. One side of the door stopper head 15 is provided with a limiting shaft 16 that can enter the limiting groove 131.

[0037] When the third shaft 33 is on one side of the line connecting the first shaft 31 and the second shaft 32, that is Figure 2 in the state shown, the limiting groove 131 faces the limiting shaft 16. Then, when the door stopper base 11 and the door stopper head 15 approach each other, the limiting shaft 16 enters the limiting groove 131 and drives the locking tongue 13 to rotate until the third shaft 33 is on the other side of the line connecting the first shaft 31 and the second shaft 32, as Figure 6 shown in the state, that is, the locking of the door stopper base 11 and the door stopper head 15 is completed.

[0038] When this door stopper is in use, one of the door stopper base 11 and the door stopper head 15 is installed on the door leaf, and the other is installed on the ground or wall surface. When the door leaf is opened, the door stopper base 11 and the door stopper head 15 approach each other until the limiting shaft 16 enters the limiting groove 131 to reach Figure 6 the state shown, that is, the locking is completed, and at this time the door leaf is fixed.

[0039] In this embodiment, taking the door stopper base 11 being fixedly installed on the door leaf and the door stopper head 15 being fixedly installed on the ground as an example, its working principle is described. In other embodiments, the door stopper head 15 can also be fixedly installed on the door leaf, and the door stopper base 11 can be fixedly installed on the ground or wall surface. Its working principle is similar to that in this embodiment, and both use the cooperation of the limiting shaft 16 and the limiting groove 131 to achieve the locking of the door stopper head 15 and the door stopper base 11, and finally achieve the fixation of the door leaf. Therefore, its specific structure will not be elaborated.

[0040] For details, please refer to Figures 2 to 6 In Figure 2 when the door leaf is opened as shown but the door stopper base 11 and the door stopper head 15 are not in contact, the third shaft 33 is on the right side of the line connecting the first shaft 31 and the second shaft 32, and the limiting groove 131 at the outer end of the locking tongue 13 faces the limiting shaft 16. At this time, the first spring 21 applies a force towards the locking tongue 13 to the telescopic end 121, and this force forms a clockwise moment on the locking tongue 13 through the connecting rod 14. Since the side of the locking tongue 13 is blocked by other structures, it can only be inFigure 2 and Figure 6 rotates reciprocally in the state shown, so that this moment can keep the locking tongue 13 stably in this state. That is, when the door suction seat 11 is not in contact with the door suction head 15, if the locking tongue 13 is not subject to other external forces, it can stably face outward.

[0041] When the door suction seat 11 continuously moves towards the door suction head 15, that is, moves to the left, the limit shaft 16 first enters the opening of the limit groove 131 and abuts against the lower side of the limit groove 131, that is Figure 3 the state shown, at this time the third shaft 33 is still on the right side of the line connecting the first shaft 31 and the second shaft 32.

[0042] If the door suction seat 11 continues to move to the left, it is necessary to overcome the clockwise moment indirectly applied to the locking tongue 13 by the first spring 21, and the locking tongue 13 will gradually rotate counterclockwise, and the magnitude of this moment also gradually decreases until it reaches Figure 4 the state shown. At this time, the first shaft 31, the second shaft 32, and the third shaft 33 are on the same straight line, and this moment is reduced to zero.

[0043] As the door suction seat 11 further moves to the left, the third shaft 33 will be on the left side of the line connecting the first shaft 31 and the second shaft 32, that is Figure 5 the state shown. At this time, after the force applied by the first spring 21 to the telescopic end 121 passes through the connecting rod 14, a counterclockwise moment is formed on the locking tongue 13, which can guide the door suction seat 11 to continue moving to the left, and this moment gradually increases during this process. Finally, the locking tongue 13 rotates to face the right end, that is Figure 6 the state shown, and under the action of this moment, it can stably be in the current state, realizing the locking of the door suction seat 11 and the door suction head 15. Correspondingly, the door leaf is also fixed. Subsequently, when closing the door, only by overcoming this moment can the door suction seat 11 and the door suction head 15 be separated, and the closing process is realized according to Figures 6 to 2 the sequence of

[0044] In the door suction of this embodiment, the damper 12 that plays a buffering role is fixedly arranged in the door suction seat 11, and is indirectly connected to the locking tongue 13 through the connecting rod 14. The locking tongue 13 can rotate within a preset range during locking. When locking or unlocking, the damper 12 can play a role in buffering and absorbing impact energy, enabling the door suction to achieve locking and unlocking more smoothly, avoiding instantaneous large impact forces and pulling forces, and prolonging the service life of the door suction. In addition, the damper 12 only expands and contracts in the door suction seat 11, avoiding the situation of reciprocating swinging left and right, which can reduce the thickness of the door suction seat 11, reduce the manufacturing cost to a certain extent, and reduce the requirement for the installation space.

[0045] Please refer to Figure 1, in this embodiment, a sliding hole 112 is provided on the side wall of the installation groove 111, and the second shaft 32 is slidably arranged in the sliding hole 112. Correspondingly, the telescopic end 121 of the damper 12 is slidably arranged in the sliding hole 112 via the second shaft 32, which can make the damper 12 more stably located in the installation groove 111. The top end of the damper 12 is fixedly installed on the two side walls of the installation groove 111 through the fourth shaft 34. With the help of the second shaft 32 and the fourth shaft 34, the damper 12 can be fixed in the installation groove 111 with a simple structure and low cost.

[0046] Further, in this embodiment, the third shaft 33 is arranged at the inner end of the lock tongue 13, and the outer end of the lock tongue 13 extends outside the installation groove 111. Please refer to Figures 1 to 6 , in this structural form, the door suction seat 11 does not need to completely accommodate the lock tongue 13, which can further reduce the thickness of the door suction seat 11, thereby reducing costs and the requirements for the installation space.

[0047] In addition, in this embodiment, the first spring 21 is a compression spring sleeved on the damper 12, one end of which is fixed and the other end abuts against the telescopic end 121, and can apply a force towards the lock tongue 13 to the telescopic end 121. In this structural form, compared with arranging a spring on one side of the damper 12 in the installation groove 111, the size of the door suction seat 11 can be further reduced.

[0048] In addition, since noise is easily generated when the door suction seat 11 contacts the door suction head 15, a first buffer member 41 is provided on the side wall of the limit groove 131. The first buffer member 41 is made of a flexible material, such as rubber, silica gel, foam, etc., and no obvious noise will occur when it touches other structures. As Figure 3 and Figure 8 shown, the first buffer member 41 is embedded in the side wall of the limit groove 131. When the limit shaft 16 approaches the limit groove 131, it first abuts against the first buffer member 41, which can reduce the collision noise.

[0049] Furthermore, since the lock tongue 13 is likely to touch the inner wall of the door suction seat 11 and generate noise during rotation, a second buffer member 42 opposite to the lock tongue 13 is provided on the inner wall of the installation groove 111, and the second buffer member 42 is also made of a flexible material. As Figure 2 and Figure 6 shown, the second buffer member 42 has two abutting surfaces. When the lock tongue 13 rotates to the states shown in Figure 2 and Figure 6 , the sides of the lock tongue 13 respectively abut against the two abutting surfaces, which can limit the rotation of the lock tongue 13 and no obvious noise will be generated during contact.

[0050] In addition, when the door stopper base 11 and the door stopper head 15 are in a separated state, the locking tongue 13 is prone to rotation after being accidentally operated by a person, causing the limiting groove 131 to face the inside of the mounting groove 111. Then, when the door stopper base 11 and the door stopper head 15 approach each other, the limiting shaft 16 cannot enter the limiting groove 131 to achieve locking. For this reason, in this embodiment, the structures of the locking tongue 13 and the door stopper head 15 are also specially arranged. Please refer to Figure 1 , Figure 7 and Figure 8 . A shaft seat 17 is further provided on the door stopper head 15. A shaft hole is provided on the shaft seat 17, and a second spring 22 is provided in the shaft hole. The limiting shaft 16 is slidably arranged in the shaft seat 17 along its own axial direction, and the second spring 22 applies an outward force to the limiting shaft 16. When there is no external force, the outer end of the limiting shaft 16 will be pushed out of the shaft hole by the second spring 22, facilitating cooperation with the limiting groove 131 to achieve locking.

[0051] At the same time, an inclined guide surface 132 is formed on the side surface of the locking tongue 13, and the guide surface 132 faces the outer end portion of the limiting shaft 16. When the locking tongue 13 is accidentally operated to rotate so that the limiting groove 131 faces the inside of the mounting groove 111, that is, when the third shaft 33 is on the other side of the line connecting the first shaft 31 and the second shaft 32. For example, Figure 6 in the state shown (but the limiting shaft 16 does not enter the limiting groove 131), if the door stopper base 11 and the door stopper head 15 approach each other, the outer end surface of the limiting shaft 16 will first abut against the guide surface 132 of the locking tongue 13. Under the extrusion of the guide surface 132, the limiting shaft 16 will gradually retract into the shaft seat 17 until it is opposite to the limiting groove 131. Under the action of the second spring 22, the outer end portion of the limiting shaft 16 will enter the limiting groove 131 to achieve the locking function.

[0052] Furthermore, in this embodiment, two opposite shaft seats 17 and two opposite limiting shafts 16 are provided on the door stopper head 15. At the same time, two opposite guide surfaces 132 are formed on the side surface of the locking tongue 13. As Figure 8 shown, the middle of one side surface of the locking tongue 13 protrudes outward, and two opposite guide surfaces 132 are formed on both sides thereof. The middle of the two guide surfaces 132 is opposite to the middle of the two limiting shafts 16. When the door stopper base 11 and the door stopper head 15 approach each other, if the limiting groove 131 faces the inner side of the mounting groove 111, the two guide surfaces 132 can guide the two limiting shafts 16 to retract into the shaft seat 17 until the limiting shafts 16 are opposite to the limiting groove 131, and then enter the limiting groove 131 to achieve the locking function. Compared with only providing one shaft seat 17 and guide surface 132, this structural form can balance the acting force between the limiting shaft 16 and the door stopper base 11, enabling the door stopper to be used stably for a long time without being prone to loosening.

[0053] Furthermore, the outer end face of the limiting shaft 16 is an inclined plane or an arc surface. When it contacts the guiding surface 132, it can be more easily retracted into the shaft seat 17, making the locking process smoother and reducing noise at the same time.

[0054] In addition, in this embodiment, an outer cover is further sleeved on the outer periphery of the door stopper seat 11, and a through hole for the locking tongue 13 to extend outward is provided at one end thereof. On the basis of ensuring the realization of the above functions, the structure inside the door stopper seat 11 can also be covered, making the appearance of the door stopper more concise.

[0055] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A door stopper, characterized in that, Comprising: A door stopper base, with a mounting groove formed in the middle; A locking tongue, hinged in the mounting groove via a first shaft, and a limiting groove is formed at the outer end; A door stopper head, with a limiting shaft on one side that can enter the limiting groove; A shaft seat, fixedly arranged on the door stopper head, with a second spring arranged therein, the limiting shaft is slidably arranged in the shaft seat along the axial direction, and the second spring applies a force towards the outer end to the limiting shaft; Wherein An inclined guiding surface opposite to the outer end of the limiting shaft is formed on the side surface of the locking tongue.

2. The door stopper according to claim 1, wherein Two opposite shaft seats and limiting shafts are provided on the door stopper head in total; Two opposite guiding surfaces are formed on the side surface of the locking tongue.

3. The door stopper according to claim 2, wherein The outer end surface of the limiting shaft is an inclined surface or an arc surface.

4. The door stopper according to claim 1, wherein A first buffer is provided on the side wall of the limiting groove.

5. The door stopper according to claim 1, wherein A second buffer opposite to the locking tongue is provided on the inner wall of the mounting groove.

6. The door stopper according to any one of claims 1 to 5, characterized in that, Further comprising: An outer cover, covering the outer periphery of the door stopper base, and a through hole for the locking tongue to extend outwards is provided at one end.

Images