Guide rail return buffering device

Abstract

The utility model discloses a guide rail return buffering device which comprises a fixed rail, a sliding rail, a buffer, a rotary shifting block, a spring and a trigger rod. The buffer is arranged on the fixed rail and is positioned outside the fixed rail; the rotary shifting block is rotationally arranged in the fixed rail and partially penetrates out of the fixed rail to be matched with the buffer; one end of the spring is connected to the rotary shifting block, and the other end of the spring is connected into the fixed rail; and the trigger rod is arranged on the inner side wall of the sliding rail. Therefore, the buffer is arranged outside the fixed rail, so that a space is vacated for the interior of the fixed rail, the size of the fixed rail does not need to be increased, and the cost is reduced; in addition, the buffer is arranged outside the fixed rail, so that the buffer is more convenient to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of drawer guide rails, in particular to a guide rail return buffer device. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] At present, drawers installed with guide rails are very smooth to drag. In order to avoid impact and noise when the drawer is closed, most guide rails are equipped with a return buffer mechanism. In the later stage of drawer closing, the drawer is dragged slowly by the combined action of the pre-stretched spring and the buffer until it is completely closed.

[0004] Among them, patent publication number CN117461952A discloses a return buffer device for a guide rail, including a damper, a rotating member, an elastic member and a trigger member, wherein the damper is arranged inside the fixed rail; the rotating member is rotatably arranged inside the fixed rail and cooperates with the damper; one end of the elastic member is connected to the rotating member, and the other end is connected to the fixed rail; the trigger member is arranged on the sliding rail. When the sliding rail is driven to return to a certain position, the trigger member can drive the rotating member to rotate to a state out of balance, and then the elastic member drives the rotating member to continue to rotate and compress the damper to achieve damping buffering, and at the same time, the rotating member drives the trigger member to move to achieve automatic return of the sliding rail.

[0005] However, this product has the following problems during use: first, since the damper is arranged inside the fixed rail, the damper will occupy the internal space of the fixed rail. In order to avoid interference with other structures inside the fixed rail, the fixed rail can only be made larger, thereby increasing the cost; second, when the damper needs to be repaired or disassembled, since the damper is arranged inside the fixed rail, the operating space is relatively small, which is also inconvenient for the operator. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a guide rail return buffer device, which frees up space inside the fixed rail by arranging the buffer outside the fixed rail, thereby eliminating the need to increase the size of the fixed rail and reducing costs; in addition, arranging the buffer outside the fixed rail also makes it easier to repair and replace it.

[0007] The utility model is implemented by the following technical solutions:

[0008] A guide rail return buffer device, comprising:

[0009] A fixed rail and a sliding rail, wherein the sliding rail is slidably arranged on the fixed rail;

[0010] a buffer, which is arranged on the fixed rail and located outside the fixed rail;

[0011] A rotating block, which is rotatably disposed inside the fixed rail and partially passes through the fixed rail to cooperate with the buffer;

[0012] A spring, one end of which is connected to the rotating block, and the other end of which is connected to the inside of the fixed rail;

[0013] A trigger rod, which is arranged on the sliding rail;

[0014] Wherein, when the sliding rail is pulled out to a certain position, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is in an uncompressed state at this time;

[0015] When the sliding rail is pushed in to a certain position, the trigger rod abuts against the rotating block and drives the rotating block to rotate until it is out of balance. At this time, under the elastic force of the spring, the spring drives the rotating block to continue to rotate and compress the buffer to achieve buffering. At the same time, the rotating block drives the trigger rod to move to achieve automatic return of the sliding rail.

[0016] Furthermore, the buffer is arranged on the outer side of the fixed rail.

[0017] Furthermore, it also includes a bracket arranged on the outer side of the fixed rail, and the buffer is arranged on the bracket.

[0018] Furthermore, the buffer is an oil cylinder, which includes a cylinder body and a rod body that moves relative to the cylinder body to achieve buffering, and the cylinder body is connected to the rotating shift block.

[0019] Further, when the rotating block is in a balanced state, the connection point between the rotating block and the fixed rail is located on the straight line formed by the spring; or,

[0020] The connection point between the rotating block and the fixed rail deviates from the straight line formed by the spring, and the rotating block abuts against the fixed rail under the elastic force of the spring.

[0021] Furthermore, a fixing column is protruded inside the fixing rail, and when the connection point between the rotating block and the fixing rail deviates from the straight line formed by the spring, the rotating block abuts against the fixing column under the elastic force of the spring.

[0022] Furthermore, a first slot that matches the trigger rod is provided on the rotating block. When the sliding rail is pushed in until the trigger rod is engaged with the first slot, the rotating block can be driven to rotate until it is out of balance. Then, the spring continues to drive the rotating block to rotate, and the trigger rod is engaged with the first slot.

[0023] When the sliding rail is pulled out, the trigger rod is engaged with the first slot to drive the rotating block to overcome the elastic force of the spring and reset and rotate, and at the same time, the rotating block drives the buffer to reset, until the trigger rod is disengaged from the first slot, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is reset to its initial state.

[0024] Furthermore, a second slot is provided on the rotating block to engage with the trigger rod. When the trigger rod is inserted into the second slot and pulled out of the sliding rail again until the trigger rod is disengaged from the second slot, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is reset to its initial state.

[0025] Furthermore, it also includes a cover plate arranged on the fixed rail, and the cover plate shields part of the spring.

[0026] Compared with the prior art, the utility model has the following beneficial effects: the utility model arranges the buffer on the outer side of the fixed rail, thereby freeing up space inside the fixed rail, thereby eliminating the need to increase the size of the fixed rail and reducing costs; in addition, arranging the buffer outside the fixed rail also makes it more convenient to repair and replace it. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of the guide rail return buffer device of the utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0029] Figure 3 The present invention is a schematic diagram of the structure of the guide rail return buffer device after the cover plate is hidden.

[0030] The numbers in the figure represent the following meanings: 1. fixed rail; 11. fixed column; 12. protrusion; 2. sliding rail; 21. trigger rod; 3. oil cylinder; 31. cylinder body; 32. rod body; 4. rotating dial block; 41. first slot; 42. second slot; 43. protrusion; 5. bracket; 6. cover plate; 7. spring; 8. pin. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present application are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0032] In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0033] It should also be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] See also Figure 1-3 The utility model discloses a guide rail return buffer device, comprising a fixed rail 1, a sliding rail 2 that slides linearly relative to the fixed rail 1, and a return buffer mechanism arranged between the fixed rail 1 and the sliding rail 2. By arranging the return buffer device, the drawer can be moved slowly until it is completely closed in the later stage of closing the drawer, thereby avoiding collision and noise when the drawer is closed, thereby extending the service life of the drawer.

[0036] Specifically, the return buffer mechanism includes a buffer, a rotating block 4, a spring 7 and a trigger rod 21. The buffer is arranged on the fixed rail 1 and is located at the outer side of the fixed rail 1. Preferably, the buffer is an oil cylinder 3 and includes a cylinder body 31 and a rod body 32. The cylinder body 31 and the rod body 32 move relative to each other to form a buffer. The rotating block 4 is rotatably arranged inside the fixed rail 1 and partially passes through the fixed rail 1 and is connected to the cylinder body 31. One end of the spring 7 is connected to the rotating block 4, and the other end thereof is connected to the inside of the fixed rail 1. The trigger rod 21 is arranged on the sliding rail 2 and cooperates with the rotating block 4.

[0037] Preferably, a bracket 5 is provided on the outer side of the fixed rail 1, and a mounting groove for mounting the oil cylinder 3 is provided in the bracket 5. The rod body 32 in the oil cylinder 3 is fixed on the mounting groove, and the cylinder body 31 in the oil cylinder 3 is telescopically moved relative to the rod body 32 to form a buffer; the rotating block 4 is provided with a mounting hole, and the rotating block 4 can be rotatably connected to the fixed rail 1 by using a pin 8 to pass through the mounting hole and fixed on the fixed rail 1; in addition, a boss 43 is provided on the rotating block 4, and a convex block 12 is provided on the fixed rail, one end of the spring is sleeved on the boss 43, and the other end of the spring is sleeved on the convex block 12; the rotating block 4 is provided with a first slot 41 that matches the trigger rod 21.

[0038] Therefore, by arranging the buffer on the outer side of the fixed rail 1, space is freed up inside the fixed rail 1, so there is no need to increase the size of the fixed rail 1, thereby reducing costs; in addition, arranging the buffer outside the fixed rail 1 also makes it more convenient to repair and replace it.

[0039] Furthermore, when the drawer is fully closed, the trigger rod 21 is inserted into the first slot 41; when the drawer is subsequently pulled outward to drive the sliding rail 2 to move relative to the fixed rail 1, the sliding rail 2 drives the rotating block 4 to overcome the elastic force of the spring 7 and reset to rotate through the engagement between the trigger rod 21 and the first slot 41, and the rotating block 4 drives the cylinder body 31 of the oil cylinder 3 to reset until the trigger rod 21 is disengaged from the first slot 41. At this time, the rotating block 4 abuts against the fixed column 11 inside the fixed rail 1 under the elastic force of the spring 7 and is in a balanced state, and the oil cylinder 3 is reset to the initial state (such as Figure 3 shown).

[0040] It should be noted that when the rotating block 4 is in a balanced state, there are two states: one is that the connection point between the rotating block 4 and the fixed rail 1 is located on the straight line formed by the spring 7, and the rotating block 4 is in a force balanced state; the other is that the connection point between the rotating block 4 and the fixed rail 1 deviates from the straight line formed by the spring 7, and the rotating block 4 abuts against the fixed column 11 of the fixed rail 1 under the elastic force of the spring 7 (such as Figure 3 shown).

[0041] When the drawer is closed to drive the sliding rail 2 to return relative to the fixed rail 1, the trigger rod 21 first engages with the first slot 41, and then continues to drive the sliding rail 2 to return and drives the rotating block 4 to leave the equilibrium state through the engagement between the trigger rod 21 and the first slot 41. At this time, under the elastic force of the spring 7, the spring 7 drives the rotating block 4 to continue to rotate and compress the cylinder 31 to achieve buffering. At the same time, the rotating block 4 drives the sliding rail 2 to automatically return through the engagement between the trigger rod 21 and the first slot 41 until the sliding rail 2 is completely buffered and closed.

[0042] Furthermore, the rotary dial block 4 is also provided with a second slot 42 that is engaged with the trigger rod 21 and a guide bevel block for guiding the trigger rod 21 to engage in the second slot 42; specifically, when the drawer is in a pulled-out state and the rotary dial block 4 is out of balance and is pulled by the spring 7 to completely compress the buffer (i.e., in an abnormal state), the drawer is closed again to drive the sliding rail 2 to return until the trigger rod 21 abuts against the guide bevel block and enters the second slot 42 along the guidance of the guide bevel block. At this time, the drawer is pulled out again to drive the sliding rail 2 to move until the trigger rod 21 falls off the second slot 42. At this time, the rotary dial block 4 returns to a balanced state under the elastic force of the spring 7, and then when the drawer is closed again, the trigger rod 21 can engage with the first slot 41 (i.e., return to a normal state).

[0043] In addition, a cover plate 6 is provided on the fixed rail 1 , and the cover plate 6 shields part of the tension spring 7 , so as to prevent dust and impurities from adhering to the spring 7 and affecting its elastic force.

[0044] Compared with the prior art, the utility model has the following beneficial effects:

[0045] By arranging the buffer on the outer side of the fixed rail 1, space is freed up inside the fixed rail 1, so there is no need to increase the size of the fixed rail 1, thereby reducing costs; in addition, arranging the buffer outside the fixed rail 1 also makes it more convenient to repair and replace it.

[0046] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A guide rail return buffer device, characterized in that: include: A fixed rail and a sliding rail, wherein the sliding rail is slidably arranged on the fixed rail; a buffer, which is arranged on the fixed rail and located outside the fixed rail; A rotating block, which is rotatably disposed inside the fixed rail and partially passes through the fixed rail to cooperate with the buffer; A spring, one end of which is connected to the rotating block, and the other end of which is connected to the inside of the fixed rail; A trigger rod, which is arranged on the sliding rail; Wherein, when the sliding rail is pulled out to a certain position, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is in an uncompressed state at this time; When the sliding rail is pushed in to a certain position, the trigger rod abuts against the rotating block and drives the rotating block to rotate until it is out of balance. At this time, under the elastic force of the spring, the spring drives the rotating block to continue to rotate and compress the buffer to achieve buffering. At the same time, the rotating block drives the trigger rod to move to achieve automatic return of the sliding rail.

2. The guide rail return buffer device according to claim 1, characterized in that: The buffer is disposed on an outer side of the fixed rail.

3. The guide rail return buffer device according to claim 2, characterized in that: The invention also comprises a bracket arranged at the outer side of the fixed rail, and the buffer is arranged on the bracket.

4. The guide rail return buffer device according to any one of claims 1 to 3, characterized in that: The buffer is an oil cylinder, which includes a cylinder body and a rod body that moves relative to the cylinder body to achieve buffering, and the cylinder body is connected to the rotating shift block.

5. The guide rail return buffer device according to claim 1, characterized in that: When the rotating block is in a balanced state, the connection point between the rotating block and the fixed rail is located on the straight line formed by the spring; or, The connection point between the rotating block and the fixed rail deviates from the straight line formed by the spring, and the rotating block abuts against the fixed rail under the elastic force of the spring.

6. The guide rail return buffer device according to claim 5, characterized in that: A fixing column is protruded inside the fixing rail. When the connection point between the rotating block and the fixing rail deviates from the straight line formed by the spring, the rotating block abuts against the fixing column under the elastic force of the spring.

7. The guide rail return buffer device according to claim 1, characterized in that: The rotating block is provided with a first slot that matches the trigger rod. When the sliding rail is pushed in until the trigger rod is engaged with the first slot, the rotating block can be driven to rotate until it is out of balance. Then, the spring continues to drive the rotating block to rotate, and the trigger rod is engaged with the first slot. When the sliding rail is pulled out, the trigger rod is engaged with the first slot to drive the rotating block to overcome the elastic force of the spring and reset and rotate, and at the same time, the rotating block drives the buffer to reset, until the trigger rod is disengaged from the first slot, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is reset to its initial state.

8. The guide rail return buffer device according to claim 1, characterized in that: The rotating block is also provided with a second slot that is engaged with the trigger rod. When the trigger rod is inserted into the second slot and pulled out of the sliding rail again until the trigger rod is disengaged from the second slot, the rotating block is in a balanced state under the elastic force of the spring, and the buffer is reset to its initial state.

9. The guide rail return buffer device according to claim 1, characterized in that: It also includes a cover plate arranged on the fixing rail, wherein the cover plate shields a part of the spring.

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