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 damper is fixedly arranged in the mounting groove; 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; one end of the connecting rod is hinged to the telescopic end of the damper through a second shaft, and the other end is eccentrically hinged to the spring bolt through a third shaft; the first spring is arranged in the mounting groove and applies acting force towards the spring bolt to the telescopic end; a limiting shaft capable of entering the limiting groove is arranged on one side of the door suction head; when the third shaft is located on one side of the connecting line of the first shaft and the second shaft, the limiting groove faces the limiting shaft. When the door stopper seat and the door stopper head get close to each other, the limiting shaft enters the limiting groove and drives the spring bolt to rotate until the third shaft is located on the other side of the connecting line of the first shaft and the second shaft. According to the door stopper, large impact force generated on the door stopper head and the door stopper seat during locking can be reduced, and meanwhile the door stopper is simple in structure, small in size and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of door hardware, in particular to a door stopper. Background Art

[0002] In the prior art, door catches are mostly column-type, suction plate-type, vertical and horizontal-type, and electromagnetic electric-type structures. Among them, the electromagnetic electric-type door catch has a high cost and a complex internal structure, making it unsuitable for most households. The column-type door catch generates a large impact force when closing and a great pulling force when opening the door, with uneven force, but a relatively small resistance to impact and pulling force, and frequent use can easily damage the door and door frame. The suction plate-type door catch has a low suction efficiency and little effect because the suction direction is inconsistent with the movement direction of the door leaf. Therefore, there is a need for a door catch that can effectively withstand and reduce impact and pulling force and has a lower manufacturing cost.

[0003] The Chinese patent application with the authorization announcement number CN219299032U discloses a door stopper, which has a buffering function, but has the disadvantage that after the lock tongue is touched by mistake, it cannot be automatically reset, resulting in the door stopper seat and the door stopper head being unable to be adsorbed together. It can only be used normally after the lock tongue is pushed back to its original position, which brings inconvenience to the user. In addition, the elastic telescopic member needs to swing back and forth in the seat body, resulting in a larger seat body thickness, increasing the production cost, and requiring a higher installation space for the door stopper, requiring a larger space to install the door stopper. Utility Model Content

[0004] The utility model provides a door stopper to at least solve one of the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a door stopper, including: a door stopper seat, a mounting groove is formed in the middle part; a damper is fixed in the mounting groove; a lock tongue is hinged in the mounting groove via a first axis, 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 axis, and the other end is eccentrically hinged to the lock tongue via a third axis; a first spring is arranged in the mounting groove, applying a force toward the lock tongue to the telescopic end; a door stopper head, one side of which is provided with a limiting shaft that can enter the limiting groove; wherein when the third shaft is on one side of the 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 are close to 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 line connecting the first shaft and the second shaft.

[0006] Preferably, a side wall of the mounting groove is provided with a sliding hole, and the telescopic end is slidably disposed in the sliding hole via the second shaft.

[0007] Preferably, the third shaft is arranged at the inner end of the lock tongue, and the outer end of the lock tongue extends outside the mounting groove.

[0008] 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.

[0009] Preferably, a first buffer is provided on the side wall of the limiting groove.

[0010] Preferably, the inner wall of the mounting groove is provided with a second buffer member opposite to the locking tongue.

[0011] Preferably, it also includes: an axle seat, which is fixed on the door suction head and has a second spring therein, and the limiting shaft is axially slidably arranged in the axle seat, and the second spring applies a force toward the outer end to the limiting shaft; wherein an inclined guide surface is formed on the side of the lock tongue, and when the third axis is on the other side of the line connecting the first axis and the second axis, if the door suction seat and the door suction head are close to each other, the outer end surface of the limiting shaft will abut against the guide surface and retract into the axle seat until it is opposite to the limiting groove and enters the limiting groove under the action of the second spring.

[0012] Preferably, two opposite shaft seats and limiting shafts are provided on the door suction head; and two opposite guide surfaces are formed on the side of the lock tongue.

[0013] Preferably, the outer end surface of the limiting shaft is an inclined surface or a curved surface.

[0014] Preferably, it also includes: an outer cover, which is arranged on the outer periphery of the door stopper and has a through hole at one end for the lock tongue to extend outward.

[0015] According to the above description and practice, the door suction described in the utility model fixes the damper that plays a buffering role in the door suction seat, and realizes an indirect connection with the lock tongue through a connecting rod. The lock tongue can rotate within a preset range when locked. When locking or unlocking, the damper can play a role in buffering and absorbing impact energy, so that the door suction can be locked and unlocked more smoothly, avoiding instantaneous large impact and pulling force, extending the service life of the door suction, and protecting the door frame, floor, and wall at the same time. In addition, the damper only expands and contracts in the door suction seat, avoiding the situation of reciprocating swinging left and right, which can reduce the thickness of the door suction seat, reduce the production cost to a certain extent, and reduce the requirements for installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a door stopper involved in one embodiment of the utility model.

[0017] Figures 2 to 6 It is a schematic diagram of the cross-sectional structure of the door suction involved in an embodiment of the present utility model, which shows the process of locking the door suction seat and the door suction head when they are close to each other.

[0018] Figure 7 It is a schematic diagram of the cross-sectional structure of a door stopper seat in a door stopper involved in one embodiment of the utility model.

[0019] Figure 8 The present invention is a schematic structural diagram of a locking tongue in a door stopper according to an embodiment of the present invention.

[0020] The reference numerals in the figure are:

[0021] 11. Door stopper 12. Damper

[0022] 13. Lock tongue 14. Connecting rod

[0023] 15. Door suction head 16. Limit axis

[0024] 17. Axle seat 21. First spring

[0025] 22. Second spring 31. First shaft

[0026] 32. Second axis 33. Third axis

[0027] 34. fourth shaft 41. first buffer

[0028] 42. second buffer member 111. mounting groove

[0029] 112, sliding hole 121, telescopic end

[0030] 131, limiting groove 132, guide surface DETAILED DESCRIPTION

[0031] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0032] In addition, the accompanying drawings are only schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the 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 therefore cannot be understood as a limitation on the utility model.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In this embodiment, a door stopper is disclosed. Please refer to Figures 1 to 6 The door stopper includes a door stopper seat 11, a damper 12, a lock tongue 13, a connecting rod 14, a first spring 21 and a door stopper head 15. A mounting groove 111 is formed in the middle of the door stopper seat 11 for accommodating structures such as the damper 12, the lock tongue 13, the connecting rod 14 and the first spring 21. Specifically, the damper 12 is fixedly arranged in the mounting groove 111, and its telescopic end 121 can be telescoped in the mounting groove 111. The lock tongue 13 is hinged in the mounting groove 111 via the first shaft 31, and a limiting groove 131 is formed at the outer end of the lock tongue 13 for cooperating with the door stopper head 15 to realize the locking function.

[0035] The connecting rod 14 is used to connect the telescopic end 121 of the damper 12 with the lock 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 lock tongue 13 via the third shaft 33. The eccentricity refers to the third shaft 33 deviating from the rotation axis of the lock tongue 13, that is, deviating from the first shaft 31. Therefore, when the lock tongue 13 rotates, the telescopic end 121 of the damper 12 can be driven to extend and retract through the connecting rod 14. The first spring 21 is arranged in the mounting groove 111, and applies a force toward one side of the lock tongue 13 to the telescopic end 121 of the damper 12, so that the lock tongue 13 can be stably in its position after the rotation is completed. A limiting shaft 16 that can enter the limiting groove 131 is provided on one side of the door suction head 15.

[0036] When the third axis 33 is on one side of the line connecting the first axis 31 and the second axis 32, that is, Figure 2 In the state shown, the limiting groove 131 faces the limiting shaft 16. Afterwards, when the door suction seat 11 and the door suction head 15 approach each other, the limiting shaft 16 enters the limiting groove 131 and drives the lock 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 shown in FIG. Figure 6 In the state shown, the locking of the door suction seat 11 and the door suction head 15 is completed.

[0037] When the door suction is in use, one of the door suction seat 11 and the door suction head 15 is installed on the door leaf, and the other is installed on the ground or wall. When the door leaf is opened, the door suction seat 11 and the door suction head 15 are close to each other until the limiting shaft 16 enters the limiting groove 131 to reach Figure 6 The state shown is that the locking is completed and the door leaf is fixed.

[0038] In this embodiment, the working principle is described by taking the case where the door suction seat 11 is fixedly installed on the door leaf and the door suction head 15 is fixedly installed on the ground as an example. In other embodiments, the door suction head 15 can also be fixedly installed on the door leaf and the door suction seat 11 can be fixedly installed on the ground or wall. The working principle is similar to that in this embodiment, and the locking of the door suction head 15 and the door suction seat 11 is realized by the cooperation of the limiting shaft 16 and the limiting groove 131, and finally the door leaf is fixed. Therefore, the specific structure is not repeated here.

[0039] Please refer to Figures 2 to 6 ,exist Figure 2 When the door leaf is open but the door stopper 11 is not in contact with the door stopper head 15, the third axis 33 is on the right side of the line connecting the first axis 31 and the second axis 32, and the limiting groove 131 at the outer end of the lock tongue 13 faces the limiting axis 16. At this time, the first spring 21 applies a force toward the lock tongue 13 to the telescopic end 121, and the force forms a clockwise torque on the lock tongue 13 through the connecting rod 14. Since the side of the lock tongue 13 is blocked by other structures, it can only be locked. Figure 2 and Figure 6 In the state shown, the lock tongue 13 is reciprocated, so the moment can stably keep the lock tongue 13 in this state. That is, when the door suction seat 11 is not in contact with the door suction head 15, the lock tongue 13 can stably face the outside if it is not subjected to other external forces.

[0040] When the door stopper 11 continues to move toward the door stopper head 15, that is, moves to the left, the limiting shaft 16 first enters the opening of the limiting groove 131 and abuts against the lower side of the limiting groove 131, that is, Figure 3 In the state shown, the third axis 33 is still on the right side of the line connecting the first axis 31 and the second axis 32 .

[0041] If the door stopper 11 continues to move to the left, it needs to overcome the clockwise moment indirectly applied to the lock tongue 13 by the first spring 21, and the lock tongue 13 will gradually rotate counterclockwise, and the magnitude of the moment will gradually decrease until it reaches Figure 4 At this time, the first axis 31, the second axis 32, and the third axis 33 are located in the same straight line, and the torque is reduced to zero.

[0042] As the door stopper 11 moves further to the left, the third axis 33 will be on the left side of the line connecting the first axis 31 and the second axis 32, that is, Figure 5 In the state shown, the force applied by the first spring 21 to the telescopic end 121 passes through the connecting rod 14, and forms a counterclockwise torque on the lock tongue 13, which can guide the door stopper 11 to continue to move to the left, and the torque gradually increases during the process. Finally, the lock tongue 13 rotates to the right end, that is, Figure 6 The door stopper 11 and the door stopper 15 are locked together. The door leaf is fixed accordingly. When closing the door, the door stopper 11 and the door stopper 15 can be separated only by overcoming the torque. Figure 6 to Figure 2 The order of implementation.

[0043] The door stopper in this embodiment has a damper 12 that plays a buffering role fixed in the door stopper seat 11, and an indirect connection with the lock tongue 13 is achieved through a connecting rod 14. The lock tongue 13 can rotate within a preset range when locked. When locking or unlocking, the damper 12 can play a role in buffering and absorbing impact energy, so that the door stopper can be locked and unlocked more smoothly, avoiding instantaneous large impact and pulling forces, and extending the service life of the door stopper. In addition, the damper 12 only expands and contracts in the door stopper seat 11, avoiding the situation of reciprocating left and right swinging, which can reduce the thickness of the door stopper seat 11, which can reduce the production cost to a certain extent, and reduce the requirements for installation space.

[0044] Please refer to Figure 1In this embodiment, a sliding hole 112 is provided on the side wall of the mounting groove 111, and the second shaft 32 is slidably disposed in the sliding hole 112. Accordingly, the telescopic end 121 of the damper 12 is slidably disposed in the sliding hole 112 via the second shaft 32, so that the damper 12 can be more stably located in the mounting groove 111. The top end of the damper 12 is fixedly mounted on the two side walls of the mounting 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 mounting groove 111 with a simple structure and low cost.

[0045] Further, in this embodiment, the third shaft 33 is disposed at the inner end of the lock tongue 13, and the outer end of the lock tongue 13 extends outside the mounting groove 111. Figures 1 to 6 In this structural form, the door stopper seat 11 does not need to completely accommodate the lock tongue 13, which can further reduce the thickness of the door stopper seat 11, thereby reducing costs and reducing the requirements for installation space.

[0046] 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 is against the telescopic end 121, and can apply a force toward the lock tongue 13 to the telescopic end 121. Compared with the spring arranged on one side of the damper 12 in the installation groove 111, this structural form can further reduce the size of the door stopper 11.

[0047] In addition, since the door suction seat 11 and the door suction head 15 are prone to collision noise when they come into contact, a first buffer member 41 is provided on the side wall of the limiting groove 131. The first buffer member 41 is made of a flexible material, such as rubber, silicone, foam, etc., and will not produce obvious noise when it comes into contact with other structures. Figure 3 and Figure 8 As shown, the first buffer member 41 is embedded in the side wall of the limiting groove 131 . When the limiting shaft 16 approaches the limiting groove 131 , it first abuts against the first buffer member 41 , which can reduce collision noise.

[0048] Furthermore, since the lock tongue 13 is likely to contact the inner wall of the door stopper 11 and generate noise when rotating, a second buffer member 42 is provided on the inner wall of the mounting groove 111 opposite to the lock tongue 13, and the second buffer member 42 is also made of a flexible material. Figure 2 and Figure 6 As shown, the second buffer member 42 has two abutment surfaces. Figure 2 and Figure 6 In the state shown in , the side surfaces of the locking tongue 13 respectively abut against the two abutting surfaces, so that the locking tongue 13 can be rotationally limited, and no obvious noise is generated when in contact.

[0049] In addition, when the door stopper 11 and the door stopper head 15 are in a separated state, the lock tongue 13 is easily rotated after being operated by someone by mistake, so that the limiting groove 131 faces the inside of the installation groove 111. After that, when the door stopper 11 and the door stopper head 15 are close to each other, the limiting shaft 16 cannot enter the limiting groove 131 to achieve locking. For this reason, in this embodiment, the structure of the lock tongue 13 and the door stopper head 15 is also specially configured. Figure 1 , Figure 7 and Figure 8 A shaft seat 17 is also provided on the door suction head 15, and 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 a force toward the outer end 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, so as to cooperate with the limiting groove 131 to achieve locking.

[0050] At the same time, an inclined guide surface 132 is formed on the side of the lock tongue 13, and the guide surface 132 is opposite to the outer end of the limit shaft 16. When the lock tongue 13 is rotated by mistake so that the limit groove 131 faces the inside of the installation 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 in (but the limiting shaft 16 has not entered the limiting groove 131), if the door suction seat 11 and the door suction head 15 are close to each other, the outer end face of the limiting shaft 16 will first abut against the guide surface 132 of the lock tongue 13. Under the compression 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 of the limiting shaft 16 will enter the limiting groove 131 to realize the locking function.

[0051] Furthermore, in this embodiment, the door suction head 15 is provided with two opposite shaft seats 17 and two opposite limiting shafts 16, and the side surface of the lock tongue 13 is formed with two opposite guide surfaces 132. Figure 8 As shown, the middle part of one side of the lock 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 limit shafts 16. When the door suction seat 11 and the door suction head 15 are close to each other, if the limit groove 131 faces the inner side of the installation groove 111, the two guide surfaces 132 can guide the two limit shafts 16 to retract into the shaft seat 17 until the limit shaft 16 is opposite to the limit groove 131, and then enters the limit groove 131 to realize the locking function. Compared with only one shaft seat 17 and guide surface 132, this structural form can balance the force between the limit shaft 16 and the door suction seat 11, so that the door suction can be used stably for a long time and is not prone to loosening.

[0052] Furthermore, the outer end surface of the limiting shaft 16 is an inclined surface or an arc surface. When it contacts the guide surface 132, it can be more easily retracted into the shaft seat 17, so that the locking process is smoother and noise can also be reduced.

[0053] In addition, in this embodiment, an outer cover is provided on the periphery of the door stopper 11, and one end of the outer cover is provided with a through hole for the lock tongue 13 to extend outward. On the basis of ensuring that the above functions can be realized, the internal structure of the door stopper 11 can also be covered, making the appearance of the door stopper more concise.

[0054] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A door stopper, characterized in that: include: The door stopper seat has a mounting groove formed in the middle; A damper, fixed in the mounting groove; The locking tongue is hinged in the installation groove via a first axis, 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 axis, and the other end of which is eccentrically hinged to the locking tongue via a third axis; A first spring, disposed in the mounting groove, exerting a force toward the locking tongue on the telescopic end; The door suction head has a limiting shaft on one side which can enter the limiting groove; in When the third axis is on one side of the line connecting the first axis and the second axis, the limiting groove faces the limiting axis; when the door suction seat and the door suction head are close to each other, the limiting axis enters the limiting groove and drives the lock tongue to rotate until the third axis is on the other side of the line connecting the first axis and the second axis.

2. The door stopper according to claim 1, characterized in that: 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.

3. The door stopper according to claim 1, characterized in that: The third shaft is arranged at the inner end of the locking tongue, and the outer end of the locking tongue extends out of the mounting groove.

4. The door stopper according to claim 1, characterized in that: 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.

5. The door stopper according to claim 1, characterized in that: The side wall of the limiting groove is provided with a first buffer member.

6. The door stopper according to claim 1, characterized in that: The inner wall of the installation groove is provided with a second buffer member opposite to the locking tongue.

7. The door stopper according to claim 1, characterized in that: Also includes: An axle seat is fixedly arranged on the door suction head, and a second spring is arranged inside the axle seat. The limit shaft is axially slidable in the axle seat, and the second spring applies a force toward the outer end to the limit shaft; in An inclined guide surface is formed on the side of the lock tongue. When the third axis is on the other side of the line connecting the first axis and the second axis, if the door suction seat and the door suction head are close to each other, the outer end surface of the limiting axis will abut against the guide surface and retract into the axis seat until it is opposite to the limiting groove and enters the limiting groove under the action of the second spring.

8. The door stopper according to claim 7, characterized in that: The door suction head is provided with two opposite shaft seats and a limit shaft; Two opposite guide surfaces are formed on the side surface of the locking tongue.

9. The door stopper according to claim 8, characterized in that: The outer end surface of the limiting shaft is an inclined surface or a curved surface.

10. The door stopper according to any one of claims 1 to 9, characterized in that: Also includes: An outer cover is arranged on the outer periphery of the door stopper, and one end of the outer cover is provided with a through hole for allowing the lock tongue to extend outwards.

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