Bidirectional buffer

Abstract

The utility model relates to the technical field of buffers for sliding doors, in particular to a bidirectional buffer. Comprising an installation guide rail connected with a door frame of the sliding door, a first trigger and a second trigger which are connected with a door rail of the sliding door, a first hook capable of being connected with the first trigger or the second trigger in an abutting mode, and a second hook capable of being connected with the first trigger or the second trigger in an abutting mode. A spring and a buffer assembly are accommodated in the mounting guide rail; when a damper used by the buffer reaches a damping point, the damper firstly makes contact with the protruding block, after the damper makes contact with the protruding block, the circulation opening is partially sealed, a part of damping force is generated, then the damper makes contact with the piston head to seal the circulation opening, complete damping force is generated, the sliding door is buffered, and the sliding door is made to move gently and evenly enough.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers for sliding doors, and more specifically, to a bidirectional buffer. Background Art

[0002] The existing two-way buffer of the sliding door generates a large damping force in an instant when the damper moves to the damping point and starts to be triggered, causing the piston rod inside the damper to move unsmoothly and unbalancedly, causing the sliding door to pause briefly and move unsmoothly in this instant. If the sliding door is made of glass, the glass may be damaged, which does not meet the actual use requirements and has low scene adaptability. For example, patent publication number CN213269428U discloses a buffer structure with this problem. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a bidirectional buffer to solve the problems existing in the above-mentioned background technology.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions: a two-way buffer, comprising: a mounting rail connected to the door frame of the sliding door, a first trigger and a second trigger connected to the door rail of the sliding door, a first hook that can abut against the first trigger or the second trigger, and a second hook that can abut against the first trigger or the second trigger; a first card slot that can be engaged with the first hook is provided in one end of the mounting rail, and a second card slot that can be engaged with the second hook is provided in the other end of the mounting rail; the first hook and the second hook are both slidably arranged on the mounting rail; a spring and a buffer assembly are accommodated in the mounting rail; one end of the spring is fixedly connected to the first hook, and the other end is fixedly connected to the second hook; one end of the buffer assembly is hinged to the first hook, and the other end is hinged to the second hook; the buffer assembly comprises: a cylinder body with damping fluid inside, a piston rod, a piston The piston rod is fixedly connected to the piston head, and the other end is hinged to the first hook after passing through the inner wall of the cylinder body; the end of the cylinder body away from the piston rod is hinged to the second hook; the first hook and the second hook can be respectively engaged with the mounting guide rail; a receiving groove is provided on the piston head; the sealing ring can be slidably arranged in the receiving groove; a flow port for the flow of damping fluid is also provided on the piston head, which is connected with the receiving groove; the protrusion is arranged on a side wall of the receiving groove close to the flow port; the sealing ring can abut against the protrusion and the inner wall of the receiving groove respectively; when the sealing ring abuts against the protrusion and the inner wall of the receiving groove at the same time, the flow port is in a closed state.

[0005] Optionally, the first hook includes: a first support portion, a first end portion, and a second end portion; the first support portion is hinged to the piston rod; the first end portion and the second end portion are respectively arranged on the first support portion; the first end portion, the second end portion and the first support portion cooperate to form a first accommodating groove; the inner wall of the first accommodating groove can be respectively abutted against the first trigger or the second trigger; the first end portion can be engaged with the first slot; the first support portion is fixedly connected to one end of the spring.

[0006] Optionally, the second hook includes: a second support portion, a third end, and a fourth end; the second support portion is hinged to the cylinder body; the third end and the fourth end are respectively arranged on the second support portion; the third end, the fourth end and the second support portion cooperate to form a second accommodating groove; the inner wall of the second accommodating groove can be respectively abutted against the first trigger or the second trigger; the third end can be engaged with the second slot; the second support portion is fixedly connected to the other end of the spring.

[0007] Optionally, two first clamping columns are symmetrically arranged on the first trigger; the two first clamping columns can respectively abut against the inner wall of the first accommodating groove or the inner wall of the second accommodating groove.

[0008] Optionally, a second clamping column is provided on the second trigger; the second clamping column can abut against the inner wall of the first accommodating groove or the inner wall of the second accommodating groove respectively.

[0009] Optionally, at least one set of pulleys is respectively provided on both sides of the mounting rail.

[0010] In summary, the utility model has the following beneficial effects:

[0011] 1. The damper used will not completely close the flow port when the sealing ring moves to the damping point. Instead, it will first contact the bump, and then partially close the flow port to generate part of the damping force. Then it will contact the piston head to close the flow port to generate complete damping force. This method makes the process of the damper generating damping force smoother, and will not suddenly generate excessive damping force, resulting in unbalanced and unsmooth movement of the piston rod, and the movement of the sliding door is not smooth and unbalanced.

[0012] 2. The first hook and the second hook respectively contact and trigger the first trigger and the second trigger, so that the damper can be triggered to make the buffer take effect when moving forward or reverse, so that the forward and reverse movements of the sliding door can be buffered. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the main structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the specific structure of Part A of the utility model;

[0016] Figure 4 It is a schematic diagram of the specific structure of Part B of the utility model;

[0017] Figure 5 It is a specific structural schematic diagram of the piston head of the utility model.

[0018] In the figure: 1. mounting rail; 11. first slot; 12. second slot; 2. first hook; 21. first support portion; 22. first end portion; 23. second end portion; 3. second hook; 31. second support portion; 32. third end portion; 33. fourth end portion; 4. spring; 5. buffer assembly; 51. cylinder body; 52. piston rod; 53. piston head; 531. flow port; 54. sealing ring; 55. bump; 6. pulley; 7. first trigger; 71. first clamping column; 8. second trigger; 81. second clamping column. DETAILED DESCRIPTION

[0019] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0020] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 it can be indirectly connected 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 the present utility model can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0021] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply 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 present invention.

[0022] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The utility model provides a bidirectional buffer, such as Figure 1As shown, it includes: a mounting rail 1 connected to the door frame of the sliding door, a first trigger 7 and a second trigger 8 connected to the door rail of the sliding door, a first hook 2 that can abut against the first trigger 7 or the second trigger 8, and a second hook 3 that can abut against the first trigger 7 or the second trigger 8; a first card slot 11 that can be engaged with the first hook 2 is provided in one end of the mounting rail 1, and a second card slot 12 that can be engaged with the second hook 3 is provided in the other end of the mounting rail 1; the first hook 2 and the second hook 3 are both slidably arranged on the mounting rail 1; a spring 4 and a buffer assembly 5 are accommodated in the mounting rail 1; one end of the spring 4 is fixedly connected to the first hook 2, and the other end is fixedly connected to the second hook 3; one end of the buffer assembly 5 is hinged to the first hook 2, and the other end is hinged to the second hook 3; the buffer assembly 5 includes: a cylinder body 51 with damping fluid inside, a piston rod 52, a piston head 53, and a seal used to cooperate with the piston head 53 to isolate the flow of damping fluid The sealing ring 54 and at least one protrusion 55 for delaying the deformation of the sealing ring 54; the cylinder body 51 can be slidably arranged on the mounting rail 1; the piston head 53 is slidably arranged in the cylinder body 51; one end of the piston rod 52 is fixedly connected to the piston head 53, and the other end passes through the inner wall of the cylinder body 51 and is hinged to the first hook 2; the end of the cylinder body 51 away from the piston rod 52 is hinged to the second hook 3; the first hook 2 and the second hook 3 can be respectively engaged with the mounting rail 1; The piston head 53 is provided with a receiving groove; the sealing ring 54 can be slidably arranged in the receiving groove; the piston head 53 is also provided with a flow port 531 for the flow of the damping fluid, which is connected to the receiving groove; the protrusion 55 is arranged on the side wall of the receiving groove close to the flow port 531; the sealing ring 54 can abut against the protrusion 55 and the inner wall of the receiving groove respectively; when the sealing ring 54 is in abutment with the protrusion 55 and the inner wall of the receiving groove at the same time, the flow port 531 is in a closed state.

[0024] Specifically, Figure 5 As shown, the protrusion 55 in the buffer assembly 5 is used to delay the deformation of the sealing ring 54, so that when the piston rod 52 moves to the damping point, the flow port 531 on the piston head 53 will not be completely closed, so that the movement of the piston rod 52 is smoother. Therefore, when the buffer takes effect, the buffer drives the sliding door to move more smoothly, and there will be no pause or uneven movement.

[0025] Specifically, the cylinder body 51 can slide on the mounting rail 1. When the first hook 2 and the mounting rail 1 are in a locked state, the buffer assembly 5 exerts a positive resistance on the buffer; when the second hook 3 and the mounting rail 1 are in a locked state, the buffer assembly 5 exerts a reverse resistance on the buffer; the two different states achieve a bidirectional buffering effect.

[0026] Further, the first hook 2 includes: a first support portion 21, a first end portion 22, and a second end portion 23; the first support portion 21 is hinged to the piston rod 52; the first end portion 22 and the second end portion 23 are respectively arranged on the first support portion 21; the first end portion 22, the second end portion 23 and the first support portion 21 cooperate to form a first accommodating groove; the first trigger 7 and the second trigger 8 can respectively abut against the inner wall of the first accommodating groove; the first end portion 22 can be engaged with the first clamping groove 11; the first support portion 21 is fixedly connected to one end of the spring 4.

[0027] Specifically, Figure 3 As shown, the first hook 2 and the piston rod 52 are hinged. When the first end 22 and the second end 23 of the first hook 2 abut against the first trigger 7 and the second trigger 8, the piston rod 52 can be pulled out to put the damper in a triggered state; when the piston rod 52 is pulled out and the second end 23 contacts the first trigger 7, the damper is triggered to retract, thereby causing resistance, so that the buffer takes effect and drives the sliding door to move slowly.

[0028] Further, the second hook 3 includes: a second support portion 31, a third end portion 32, and a fourth end portion 33; the second support portion 31 is hinged to the cylinder body 51; the third end portion 32 and the fourth end portion 33 are respectively arranged on the second support portion 31; the third end portion 32, the fourth end portion 33 and the second support portion 31 cooperate to form a second accommodating groove; the first trigger 7 and the second trigger 8 can respectively abut against the inner wall of the second accommodating groove; the third end portion 32 can be engaged with the second card slot 12; the second support portion 31 is fixedly connected to the other end of the spring 4.

[0029] Specifically, Figure 4 As shown, the second hook 3 is connected to the first hook 2 through the spring 4. When the third end 32 and the fourth end 33 contact the second trigger 8 in the triggered state, the first hook 2 is driven by the spring 4 to put the damper in the triggered state. The damper retracts to create resistance, so that the buffer drives the sliding door to move slowly.

[0030] Furthermore, two first clamping columns 71 are symmetrically arranged on the first trigger 7; the two first clamping columns 71 can respectively abut against the inner wall of the first receiving groove or the inner wall of the second receiving groove.

[0031] Specifically, Figure 1-2 As shown, the first trigger 7 is a plate with a mounting hole formed on the plate, which is fixed on the door rail of the sliding door by bolts or rivets, and the first clamping columns 71 are symmetrically arranged on the plate.

[0032] Specifically, the two first clamping columns 71 can be clamped in the first receiving groove and the second receiving groove, so that the first hook 2 and the second hook 3 can be triggered by the first trigger 7 or driven to be clamped in the first clamping groove 11 or the second clamping groove 12 and are in a clamping state.

[0033] Furthermore, a second clamping column 81 is disposed on the second trigger 8; the second clamping column 81 can abut against the inner wall of the first receiving groove or the inner wall of the second receiving groove respectively.

[0034] Specifically, Figure 1-2 As shown, the second trigger 8 is a plate with a mounting hole formed on the plate, which is fixed on the door rail of the sliding door by bolts or rivets, and the second clamping columns 81 are symmetrically arranged on the plate.

[0035] Specifically, the second clamping column 81 can be clamped in the first receiving groove and the second receiving groove, so that the first hook 2 and the second hook 3 can be triggered by the second trigger 8 or driven to be clamped in the first clamping groove 11 or the second clamping groove 12 and are in a clamping state.

[0036] Specifically, Figure 2-3 As shown, the first hook 2 can be clamped by the first clamping column 71 of the first trigger 7 or the second clamping column 81 of the second trigger 8 until it moves to the position of the first clamping slot 11 and is clamped in the first clamping slot 11. At this time, the first hook 2 and the mounting rail 1 are in a clamped state.

[0037] Specifically, Figure 2 and Figure 4 As shown, the second hook 3 can be clamped by the first clamping column 71 of the first trigger 7 or the second clamping column 81 of the second trigger 8 until it moves to the position of the second clamping slot 12 and is clamped in the second clamping slot 12. At this time, the second hook 3 is in a clamped state.

[0038] Furthermore, at least one set of pulleys 6 is respectively provided on both sides of the mounting rail 1 .

[0039] Specifically, Figure 1-2 As shown, the pulleys 6 on both sides can make the movement of the mounting rail 1 on the door track of the sliding door smoother, further increasing the scene adaptability of the buffer.

[0040] In the specific implementation process, when the bidirectional buffer is installed on the sliding door, the first trigger 7 and the second trigger 8 are fixed on the door track of the sliding door by bolts, rivets, etc., and the damping trigger point of the damper is adjusted to a position suitable for the scene by adjusting the installation position of the first trigger 7 and the second trigger 8 on the door track of the sliding door, and then the damping trigger point of the damper can be adjusted to a position suitable for the scene ...

[0041] When the sliding door moves in the direction from the first trigger 7 to the second trigger 8: at this time, the third end 32 of the second hook 3 is in the second clamping groove 12 and is in a clamping state; during the movement, the first clamping column 71 of the first trigger 7 and the inner wall of the first accommodating groove formed by the first end 22 and the second end 23 of the first hook 2 are in abutment state, thereby continuously stretching the piston rod 52 until the first hook 2 moves to the position of the first clamping groove 11 of the mounting guide rail 1, and the first end 22 is rotated and clamped in the first clamping groove 11 by the drive of the first clamping column 71, and the first hook 2 is in a clamping state at this time; during the continued movement, the fourth end 33 of the second hook 3 touches the second clamping column 81 of the second trigger 8, causing the second supporting portion 31 to rotate, thereby making the third end 33 of the second hook 3 The end portion 32 rotates from the second slot 12 and is no longer engaged in the second slot 12, while the first hook 2 is still engaged in the first slot 11. At this time, since the second hook 3 and the first hook 2 are connected by the spring 4, due to the pulling force of the spring 4, the cylinder body 51 moves as a whole toward the direction of the first hook 2, and the piston rod 52 in the cylinder body 51 begins to retract, causing resistance. During the retraction of the piston rod 52, the damping fluid in the cylinder body 51 causes the sealing ring 54 to first abut against the protrusion 55 on the piston head 53 to deform, thereby closing part of the flow port 531, causing a smaller damping force; during the continued movement of the piston rod 52, the damping fluid in the cylinder body 51 causes the sealing ring 54 and the protrusion 55 on the piston head 53 to abut against the inner wall of the receiving groove, thereby causing a larger positive resistance, causing the sliding door to slowly stop;

[0042] When the moving direction of the sliding door is from the second trigger 8 to the first trigger 7: at this time, the first hook 2 is clamped in the first clamping groove 11 and is in a clamping state; during the movement, the inner wall of the second accommodating groove formed by the third end 32 and the fourth end 33 of the second hook 3 will abut against the clamping column of the second trigger 8, so that the second hook 3 drives the cylinder body 51 to move as a whole, thereby stretching the piston rod 52 again until the third end 32 of the second hook 3 is rotated and clamped in the second clamping groove 12, and the second hook 3 is in a clamping state; during the continued movement, the second end 23 of the first hook 2 will contact and abut against the first clamping column 71 of the first trigger 7, thereby causing the first support portion 21 to rotate and rotate, thereby causing the first end 22 to move from the first clamping groove 11 is transferred out and is no longer in the abutment state. At this time, the second hook is still in the engaging state. Since the second hook 3 and the first hook 2 are connected by the spring 4, due to the pulling force of the spring 4, the cylinder body 51 moves as a whole in the direction of the first hook 2, and the piston rod 52 in the cylinder body 51 begins to retract and cause resistance. During the retraction of the piston rod 52, the damping fluid in the cylinder body 51 will cause the sealing ring 54 to abut against the protrusion 55 on the piston head 53 first and deform, thereby closing part of the flow port 531 and causing a smaller damping force; during the continued movement of the piston rod 52, the damping fluid in the cylinder body 51 causes the sealing ring 54 and the protrusion 55 on the piston head 53 to abut against the inner wall of the accommodating groove, thereby causing a larger reverse resistance, causing the sliding door to slowly stop.

[0043] The utility model provides a bidirectional buffer, in which the damper used will not completely close the flow port 531 with the sealing ring 54 when moving to the damping point, but will first contact the protrusion 55, and after contacting the protrusion 55, partially close the flow port 531 to generate a part of the damping force, and then contact the piston head 53 to close the flow port 531 to generate a complete damping force. This method makes the process of the damper generating the damping force smoother, and will not suddenly generate excessive damping force, resulting in the unbalanced and unsmooth movement of the piston rod 52, and the unsmooth and unbalanced movement of the sliding door.

[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A bidirectional buffer, characterized in that: include: A mounting rail connected to the door frame of the sliding door, a first trigger and a second trigger connected to the door rail of the sliding door, a first hook that can abut against the first trigger or the second trigger, and a second hook that can abut against the first trigger or the second trigger; A first slot that can be engaged with the first hook is provided at one end of the mounting rail, and a second slot that can be engaged with the second hook is provided at the other end of the mounting rail; The first hook and the second hook are both slidably arranged on the mounting rail; a spring and a buffer assembly are housed in the mounting rail; one end of the spring is fixedly connected to the first hook, and the other end is fixedly connected to the second hook; one end of the buffer assembly is hinged to the first hook, and the other end is hinged to the second hook; The buffer assembly comprises: a cylinder containing damping fluid, a piston rod, a piston head, a sealing ring used to cooperate with the piston head to isolate the flow of the damping fluid, and at least one protrusion used to delay the deformation of the sealing ring; The cylinder body can be slidably arranged on the mounting rail; the piston head is slidably arranged in the cylinder body; one end of the piston rod is fixedly connected to the piston head, and the other end is hinged to the first hook after passing through the inner wall of the cylinder body; one end of the cylinder body away from the piston rod is hinged to the second hook; the first hook and the second hook can be respectively engaged with the mounting rail; The piston head is provided with a receiving groove; the sealing ring can be slidably arranged in the receiving groove; the piston head is also provided with a flow port for the flow of the damping fluid, which is connected with the receiving groove; the protrusion is arranged on a side wall of the receiving groove close to the flow port; the sealing ring can abut against the protrusion and the inner wall of the receiving groove respectively; when the sealing ring is in abutment with the protrusion and the inner wall of the receiving groove at the same time, the flow port is in a closed state.

2. A bidirectional buffer according to claim 1, characterized in that: The first hook includes: a first supporting portion, a first end portion, and a second end portion; The first support portion is hinged to the piston rod; the first end portion and the second end portion are respectively arranged on the first support portion; the first end portion, the second end portion and the first support portion cooperate to form a first accommodating groove; the inner wall of the first accommodating groove can be respectively abutted against the first trigger or the second trigger; the first end portion can be engaged with the first clamping groove; the first support portion is fixedly connected to one end of the spring.

3. A bidirectional buffer according to claim 2, characterized in that: The second hook includes: a second supporting portion, a third end portion, and a fourth end portion; The second support portion is hinged to the cylinder body; the third end and the fourth end are respectively arranged on the second support portion; the third end, the fourth end and the second support portion cooperate to form a second accommodating groove; the inner wall of the second accommodating groove can be respectively abutted against the first trigger or the second trigger; the third end can be engaged with the second slot; the second support portion is fixedly connected to the other end of the spring.

4. A bidirectional buffer according to claim 3, characterized in that: The first trigger is symmetrically provided with two first clamping columns; the two first clamping columns can respectively abut against the inner wall of the first accommodating groove or the inner wall of the second accommodating groove.

5. A bidirectional buffer according to claim 3, characterized in that: The second trigger is provided with a second clamping column; the second clamping column can abut against the inner wall of the first accommodating groove or the inner wall of the second accommodating groove respectively.

6. A bidirectional buffer according to claim 1, characterized in that: At least one set of pulleys is respectively arranged on both sides of the mounting guide rail.

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