Durable drawer guide rail damper

Abstract

The utility model discloses a durable drawer guide rail damper which comprises a mounting seat, a sliding seat, a hook block, an extension spring and a damper, the mounting seat is fixedly arranged, the sliding seat is connected with the mounting seat in a front-back sliding mode, the hook block is hinged to the sliding seat, and an avoiding vacancy used for avoiding the hook block is formed in the front portion of the mounting seat. A hooking face used for hooking a hook block is formed at the rear end of the receding vacancy, a hook groove used for hooking a trigger column on the movable rail is formed in the hook block, the rear portion of the mounting base is rotationally connected with a wheel, one end of the extension spring is connected with the mounting base, the other corresponding end of the extension spring is connected with the sliding base, and the sliding base is located in front of the wheel. The extension spring is wound on the wheel, the damper comprises a cylinder body and a piston rod, the cylinder body is arranged in the mounting seat, and the piston rod is connected with the sliding seat. The drawer guide rail damper is good in durability and better in use experience feeling.

Description

Technical Field

[0001] The utility model relates to the field of dampers used in drawers, in particular to a durable drawer guide rail damper. Background Art

[0002] At present, drawers are connected to cabinets through guide rails. Some furniture is also provided with a damper, which includes a mounting seat, a slide seat, a hook block, a tension spring and a damper. The mounting seat can be positioned on the fixed rail of the guide rail, the slide seat is arranged to slide forward and backward, the hook block is hinged to the slide seat, one end of the tension spring is connected to the mounting seat, and the other end of the tension spring is connected to the slide seat. The cylinder body of the damper is arranged on the mounting seat, and the piston rod of the damper is connected to the slide seat; when the drawer is pulled forward to open, the trigger member on the movable rail of the guide rail drives the hook block to move forward, so the hook block drives the slide seat to move forward, the tension spring is elastically stretched, and the piston rod is stretched forward at the same time. When the hook block moves forward to a certain extent, the structure of the mounting seat that originally prevents the hook block from swinging relative to the slide seat is released. The drawer is configured to have an avoidance position, so that the hook block is sunk into the avoidance position, and the hook block is disengaged from the trigger member through the swinging action, that is, the trigger member is disengaged from the hook block, so that the drawer can continue to open forward, and the hook block moves backward through the elastic restoring force of the tension spring, but the hook block is immediately blocked by the wall of the avoidance position, so that the slide seat stays in the pulled-out position; when the drawer is pushed backward to a certain position by hand, the trigger member contacts and pushes the hook block to reset and swing, and at the same time, the hook block is buckled and connected with the trigger member through the reset swing, and the hook block is swung out of the avoidance position, so the elastic restoring force of the tension spring pulls the trigger member and the drawer backward together, and a damping effect is generated when the piston rod retracts to avoid collision and noise caused by rapid closing of the drawer.

[0003] In order to enable the tension spring to pull the drawer closed with a larger stroke to facilitate users to use the drawer, the prior art sets the elastic extension amplitude of the tension spring to be larger (relative to the free length of the tension spring). However, the greater the relative deformation of the tension spring, the easier it is to be damaged, resulting in the drawer guide damper being less durable. The free length of the tension spring can be increased to relatively reduce the deformation, but the tension springs in the prior art are all in a straight line shape, and the elastic expansion and contraction direction of the tension spring is also along the central axis of the tension spring. If the free length of the tension spring is significantly increased, the length of the mounting seat will also be significantly increased accordingly, resulting in the mounting seat being a slender structure. The mounting seat for an injection molded part is easily damaged during transportation or installation, and the depth of the furniture along the front-to-back direction is limited, and there may be insufficient installation space for the drawer guide damper. Therefore, it is necessary to improve the drawer guide damper in the prior art. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a drawer guide rail damper with better durability.

[0005] The purpose of the utility model is achieved through the following technical solutions.

[0006] The utility model discloses a durable drawer guide rail damper, comprising a mounting seat, a sliding seat, a hook block, a tension spring and a damper, wherein the mounting seat is fixedly arranged, the sliding seat is slidably connected to the mounting seat forward and backward, the hook block is hinged to the sliding seat, a clearance space for avoiding the hook block is formed at the front of the mounting seat, a hanging surface for hanging the hook block is formed at the rear end of the clearance space, a hook groove for hooking a trigger column on a movable rail is formed on the hook block, the rear part of the mounting seat is rotatably connected to a wheel, one end of the tension spring is connected to the mounting seat, and the other end corresponding to the tension spring is connected to the sliding seat, the sliding seat is located in front of the wheel, the tension spring is folded around the wheel, and the damper comprises a cylinder body and a piston rod, the cylinder body is arranged in the mounting seat, and the piston rod is connected to the sliding seat.

[0007] Preferably, an anti-slip ring groove adapted to the tension spring is formed on the outer circumference of the wheel.

[0008] Preferably, the tension spring is configured to be folded 180°.

[0009] Preferably, a damper accommodating groove is formed in the mounting seat, the cylinder body is adapted to be arranged in the damper accommodating groove, the cylinder body is arranged in the interval surrounded by the tension spring, and the wheel is located at the rear side of the damper accommodating groove.

[0010] Preferably, a rotation support shaft is formed on one side of the mounting seat, and the wheel is formed with a center hole, and the rotation support shaft is adaptively connected to the center hole.

[0011] Preferably, an axial stopper is formed at the end of the rotation support shaft, and the axial stopper is buckled with the edge of the center hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a slide is slidably connected to the mounting seat forward and backward, a hook block is hinged to the slide, a hook groove for hooking the trigger column on the movable rail is formed on the hook block, the rear of the mounting seat is rotatably connected to the wheel, one end of the tension spring is connected to the mounting seat, the other end of the tension spring corresponding to the slide is connected to the slide, the slide is located in front of the wheel, the tension spring is folded around the wheel, the damper includes a cylinder body and a piston rod, the cylinder body is arranged in the mounting seat, the piston rod is connected to the slide, so that the elastic elongation of the tension spring relative to the free length becomes relatively small, so that the tension spring is prevented from being easily fatigued and damaged, which is beneficial to improving the durability of the drawer guide rail damper of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a bottom-up stereoscopic structural schematic diagram of the durable drawer guide rail damper of the utility model in a retracted state.

[0014] Figure 2 for Figure 1 Schematic diagram of the local structure at point A.

[0015] Figure 3 for Figure 1 Schematic diagram of the local structure at location B.

[0016] Figure 4 It is a top view of the three-dimensional structure of the durable drawer guide damper of the utility model in a retracted state.

[0017] Figure 5 It is a bottom-up stereoscopic structural schematic diagram of the mounting base of the utility model.

[0018] Figure 6 It is a top view of the three-dimensional structure of the assembly of the hook block and the slide seat of the utility model.

[0019] Figure 7 It is an exploded schematic diagram of the hook block and the slide seat combination of the utility model.

[0020] Figure 8 It is a bottom-up stereoscopic structural schematic diagram of the hook block and the slide seat of the utility model.

[0021] Fig. 9 It is a schematic cross-sectional structural diagram of the wheel of the utility model.

[0022] Fig.10 It is a front perspective structural diagram of the durable drawer guide rail damper and the guide rail of the utility model.

[0023] Fig.11 The utility model is a bottom-up stereoscopic structural schematic diagram of the durable drawer guide rail damper and the guide rail assembly.

[0024] Fig.12 It is a bottom-up stereoscopic structural schematic diagram of the durable drawer guide rail damper of the utility model in an extended state.

[0025] Fig.13 The utility model is a top view structural schematic diagram of the durable drawer guide rail damper and the trigger column combination in the extended state.

[0026] Fig.14 It is a schematic diagram of the state in which the trigger column moves backward to contact the hook block of the utility model.

[0027] Fig.15 It is a schematic diagram of a state in which a trigger column is relatively buckled into a hook groove of a hook block of the utility model.

[0028] Explanation of reference numerals: mounting seat 1; slide groove 101; damper accommodating groove 102; spring accommodating chamber 103; rotating support shaft 1031; spring fixed groove 1032; axial stopper 1033; convex buckle block 104; avoidance space 1050; hanging surface 105; transition fillet 1051; side leaning surface 106; step surface 1061; slide seat 2; slider portion 21; sliding buckle 211; hinged column 22; piston rod groove 201; spring movable groove 202; hook block 3; hook groove 31; hanging block 32; hinged hole 301; tension spring 4; fixed end neck 401; movable end neck 402; damper 5; cylinder body 51; piston rod 52; wheel 6; anti-slip ring groove 601; center hole 602; fixed rail 99; movable rail 98; trigger column 97. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] The durable drawer rail damper of the utility model is as follows Figures 1 to 3 As shown, it includes a mounting seat 1, a sliding seat 2, a hook block 3, a tension spring 4 and a damper 5. The mounting seat 1 is fixedly arranged. Fig.10 As shown, the mounting base 1 can be placed against the upper side of the fixed rail 99 of the guide rail, as shown in FIG. Figure 5 As shown, the bottom of the mounting base 1 is formed with a plurality of protruding buckle blocks 104, such as Fig.11 As shown, the fixed rail 99 is formed with a buckle groove, and the convex buckle block 104 is arranged in the corresponding buckle groove, so as to position the mounting seat 1 relative to the fixed rail 99; Figure 1 As shown, the slide seat 2 is slidably connected to the mounting seat 1 forward and backward. Specifically, as Figure 5 As shown, a slide groove 101 is formed on the lower side of the mounting seat 1. Figure 6 As shown, the slide seat 2 is formed with a slider portion 21, and the slider portion 21 is adapted to slide in the slide groove 101, and a sliding button 211 is formed on the slide seat 2. Figure 4 As shown, a step structure is formed on one side (in the left-right direction) of the mounting seat 1, and the step structure includes a side leaning surface 106 and a step surface 1061. The sliding buckle 211 is slidably buckled on the upper side of the step surface 1061, thereby preventing the slider 21 from slipping out of the slide groove 101. Figure 6 and Figure 7 As shown, the hook block 3 is hinged to the slide seat 2. Specifically, the slide seat 2 is formed with a hinge column 22, and the hook block 3 is formed with a hinge hole 301. The hinge hole 301 is adapted to be connected with the hinge column 22. Figure 4 and Figure 5As shown, the front part of the mounting seat 1 is formed with an escape space 1050 for escaping the hook block 3. The escape space 1050 is actually relative to the side surface 106. The rear end of the escape space 1050 is formed with a hanging surface 105 for hanging the hook block 3. The hanging surface 105 is perpendicular to the side surface 106. A transition fillet 1051 is formed between the hanging surface 105 and the side surface 106. Figure 6 and Figure 7 As shown, the hook block 3 is formed with a hook groove 31 for hooking the trigger column 97 on the movable rail 98. Figure 1 and Figure 3 As shown, the rear portion of the mounting base 1 is rotatably connected to a wheel 6, as shown in FIG. Figure 1 and Figure 2 As shown, one end of the tension spring 4 is connected to the mounting seat 1, and the other end of the tension spring 4 is connected to the slide seat 2. Specifically, Figure 5 As shown, the mounting seat 1 is formed with a spring fixing groove 1032, as shown in FIG. Figure 8 As shown, the slide seat 2 is formed with a spring movable groove 202, as shown in FIG. Figure 2 As shown, one end of the tension spring 4 is formed with a fixed end neck 401, which is clamped in the spring fixed clamping groove 1032, and the other end of the tension spring 4 is formed with a movable end neck 402, which is clamped in the spring movable clamping groove 202; Figure 1 As shown, the slide 2 is located in front of the wheel 6, and the tension spring 4 is folded around the wheel 6, that is, the tension spring 4 is bent against the outer circumference of the wheel 6, which can be understood as the tension spring 4 is close to and around the wheel 6. Figure 1 and Figure 2 As shown, the damper 5 includes a cylinder 51 and a piston rod 52. The cylinder 51 is arranged in the mounting seat 1, and the piston rod 52 is connected to the sliding seat 2. Specifically, as shown in Figure 8 As shown, the slide seat 2 is formed with a piston rod slot 201, and the end of the piston rod 52 is formed with an annular groove, such as Figure 2 As shown, the piston rod clamping groove 201 is clamped with the above-mentioned annular groove, so as to position the slide seat 2 relative to the piston rod 52 axially.

[0031] The following briefly describes the working principle of the durable drawer rail damper of the utility model: Fig.10 As shown, a trigger column 97 is provided on one side of the movable rail 98 of the guide rail, and the movable rail 98 is fixedly installed and connected to the drawer. Fig.12 As shown, when the durable drawer rail damper of the utility model is in the extended state (the drawer is also opened at this time), the slide 2 and the piston rod 52 are in the extended state, and the tension spring 4 is in the elastic tension state, such as Figure 6 and Figure 7 As shown, a hanging block 32 is formed on the hook block 3, and the hanging block 32 is hung on the hanging surface 105 of the mounting seat 1. Fig.12As shown, at this time, the pulling force of the tension spring 4 on the slide 2 is roughly in the direction passing through the center of the hinge column 22, so at this time, the pulling force of the tension spring 4 on the slide 2 will not cause the hanging block 32 to swing away from the hanging surface 105; Fig.13 As shown, when the user pushes the drawer backward, the movable rail 98 and the trigger column 97 move backward together, as shown in FIG. Fig.14 As shown, the trigger column 97 then contacts the entrance of the hook groove 31 of the hook block 3, so that the trigger column 97 pushes the hook block 3 to swing clockwise, so that the hook groove 31 hooks the trigger column 97. At the same time, the hanging block 32 also separates from the hanging surface 105 through the above-mentioned swing. Because the blocking effect of the hanging surface 105 is lost, the hook block 3 and the slide seat 2 will be pulled backward by the elastic restoring force of the tension spring 4, and the hook block 3 also hooks the trigger column 97 and moves backward synchronously, so that the drawer can complete the subsequent closing action by itself. In this process, the slide seat 2 also drives the piston rod 52 to move backward and retract. Fig.15 As shown, the rear end of the slide 2 is finally blocked by the mounting seat 1, and the drawer is closed to the end. When the piston rod 52 is retracted into the cylinder body 51, the damper 5 plays a damping effect to prevent the drawer from closing too fast and causing a violent collision when the drawer is closed to the end, and avoids obvious collision noise. When the user needs to open the drawer, the user first pulls the drawer forward by hand, so that the trigger column 97 drives the hook block 3 and the slide 2 to move forward, the piston rod 52 is pulled forward, and the slide 2 also elastically stretches the tension spring 4. During this period, the thrust of the trigger column 97 on the hook groove 31 will cause the hook block 3 to have a tendency to swing counterclockwise (in Fig.15 In terms of vision), however, since the hanging block 32 slides along the side leaning surface 106, the hook block 3 will not swing temporarily. When the hanging block 32 reaches the front end of the side leaning surface 106, due to the loss of the obstruction of the side leaning surface 106, the hanging block 32 will be swung counterclockwise into the avoidance space 1050 due to the thrust of the trigger column 97 on the hook groove 31, and at the same time, the trigger column 97 is relatively separated from the hook groove 31, so that the drawer is separated from the durable drawer guide rail damper of the utility model, and the hanging block 32 is hung on the hanging surface 105 of the mounting seat 1, and the hanging block 32 is restored to the hanging surface 105 of the mounting seat 1. Fig.12 Status shown.

[0032] like Figure 1 As shown, since the tension spring 4 is folded around the wheel 6, that is to say, the tension spring 4 is in a bent state, under the premise that the length dimension of the mounting seat 1 in the front-to-rear direction remains unchanged, the free length of the tension spring 4 can be increased (relative to the linear shape of the tension spring in the prior art). Therefore, under the premise that the elastic elongation length remains unchanged, the elastic elongation of the tension spring 4 becomes relatively smaller relative to the free length of the tension spring 4, thereby avoiding fatigue damage of the tension spring 4 and improving the durability of the drawer guide damper of the utility model.

[0033] Since the free length of the stretch spring in the prior art is shorter, the effective number of coils of the stretch spring is less, and thus the stiffness coefficient is larger. Therefore, the drawer guide damper in the prior art will cause the user to feel relaxed when pulling the drawer at the beginning, but as the drawer is pulled out, the resistance felt by the user will increase significantly, and when the drawer is separated from the drawer guide damper, the resistance will be felt to decrease dramatically, making the experience of opening the drawer very poor; since the free length of the stretch spring 4 of the utility model can be significantly increased, the effective number of coils of the stretch spring 4 is also greatly increased, so that the stiffness coefficient of the stretch spring 4 is significantly reduced, and in the process of the elastic elongation of the stretch spring 4 gradually increasing, according to Hooke's law, the increase in the elastic force of the stretch spring 4 is relatively gentle, so that in the process of pulling open the drawer, the user does not feel a significant change in resistance, so the utility model is conducive to improving the experience of opening the drawer. Since the wheel 6 is rotatable, the wheel 6 can be driven to rotate when the tension spring 4 is extended or retracted, thereby preventing the tension spring 4 from being blocked in extension and retraction. Since the tension spring 4 is folded around the wheel 6, the tension spring 4 is bent in an arc shape, thereby preventing the tension spring 4 from being damaged due to sharp bending. Since the wheel 6 is arranged at the rear of the mounting seat 1 and the slide seat 2 is located in front of the wheel 6, the interval of the mounting seat 1 in the front-to-back direction that can be used for structural connection is fully utilized, which is beneficial to increasing the free length setting of the tension spring 4.

[0034] Furthermore, if Fig. 9 As shown, the outer periphery of the wheel 6 is formed with an anti-slip ring groove 601 adapted to the tension spring 4. Figure 3 As shown, that is to say, the tension spring 4 is partially sunken into the anti-slip ring groove 601, so the displacement of the tension spring 4 along the axial direction of the wheel 6 will be blocked by the groove wall of the anti-slip ring groove 601, thereby preventing the tension spring 4 from detaching from the wheel 6 during the elastic expansion and contraction process, which is beneficial to improving the reliability of the drawer guide damper. Specifically, the cross-sectional shape of the anti-slip ring groove 601 is an arc shape, which is beneficial to reducing the pressure of the anti-slip ring groove 601 on the tension spring 4, thereby preventing the wheel 6 from relatively pressing the tension spring 4 and causing local plastic deformation of the tension spring 4.

[0035] Furthermore, if Figure 1 As shown, the tension spring 4 is set to be folded 180°, so that the tension spring 4 is bent into two mutually balanced left and right parts, which is beneficial to increase the free length setting of the tension spring 4 and also beneficial to relatively reduce the space occupied by the drawer guide damper in the left and right directions.

[0036] Furthermore, if Figure 5 As shown, a damper receiving groove 102 is formed in the mounting seat 1. Figure 1 As shown, the cylinder 51 is adapted to be disposed in the damper receiving groove 102, and the cylinder 51 is disposed in the interval surrounded by the tension spring 4. Specifically, as shown in FIG. Figure 5As shown, a spring accommodating cavity 103 is formed in the mounting seat 1, and the damper accommodating groove 102 is located within the range of the spring accommodating cavity 103. Figure 6 As shown, the wheel 6 is located at the rear side of the damper accommodating groove 102, that is, the cylinder body 51 is arranged between the left and right parts of the tension spring 4, which makes full use of the internal space of the mounting base 1, which is conducive to making the structure of the drawer guide rail damper of the utility model compact.

[0037] Furthermore, if Figure 5 As shown, a rotation support shaft 1031 is formed on one side of the mounting base 1, and one end of the rotation support shaft 1031 is connected to the inner wall of the mounting base 1 as a whole. Fig. 9 As shown, the wheel 6 is formed with a central hole 602. Figure 3 As shown, the rotation support shaft 1031 is adapted to be connected with the center hole 602, so that the rotation setting of the wheel 6 is realized with a simple structure.

[0038] Furthermore, if Figure 3 As shown, an axial stopper 1033 is formed at the end of the rotating support shaft 1031, and the axial stopper 1033 is engaged with the edge of the center hole 602. That is to say, the axial stopper 1033 is formed at the other end corresponding to the rotating support shaft 1031. When installing the wheel 6, the center hole 602 is aligned with the rotating support shaft 1031, and then the wheel 6 is put onto the rotating support shaft 1031 along the axial direction of the rotating support shaft 1031, so that the axial stopper 1033 squeezes and stretches the center hole 602, so that the axial stopper 1033 can pass over the center hole 602, and then the center hole 602 elastically restores its shape, and the axial stopper 1033 can be engaged with the edge of the center hole 602, thereby preventing the wheel 6 from detaching from the rotating support shaft 1031.

Claims

1. A durable drawer rail damper, characterized in that: The invention comprises a mounting seat (1), a sliding seat (2), a hook block (3), a tension spring (4) and a damper (5), wherein the mounting seat (1) is fixedly arranged, the sliding seat (2) is connected to the mounting seat (1) by sliding forward and backward, the hook block (3) is hinged to the sliding seat (2), a clearance space (1050) for avoiding the hook block (3) is formed at the front of the mounting seat (1), a hook surface (105) for hanging the hook block (3) is formed at the rear end of the clearance space (1050), and a contact surface (105) for hanging the hook block (3) is formed on the hook block (3) for hanging a contact surface (105) on the movable rail (98). The hook groove (31) of the hair column (97) is connected to the rear of the mounting seat (1) in a rotatable manner with a wheel (6). One end of the tension spring (4) is connected to the mounting seat (1), and the other end of the tension spring (4) is connected to the slide seat (2). The slide seat (2) is located in front of the wheel (6). The tension spring (4) is folded around the wheel (6). The damper (5) comprises a cylinder body (51) and a piston rod (52). The cylinder body (51) is arranged in the mounting seat (1), and the piston rod (52) is connected to the slide seat (2).

2. The durable drawer rail damper according to claim 1, characterized in that: An anti-slip ring groove (601) adapted to fit the tension spring (4) is formed on the outer periphery of the wheel (6).

3. The durable drawer rail damper according to claim 1, characterized in that: The tension spring (4) is configured to be folded 180 degrees.

4. The durable drawer rail damper according to claim 2, characterized in that: A damper accommodating groove (102) is formed in the mounting seat (1), the cylinder body (51) is adapted to be arranged in the damper accommodating groove (102), the cylinder body (51) is arranged in a region surrounded by the tension spring (4), and the wheel (6) is located at the rear side of the damper accommodating groove (102).

5. The durable drawer rail damper according to claim 1, characterized in that: A rotation support shaft (1031) is formed on one side of the mounting seat (1), a center hole (602) is formed on the wheel (6), and the rotation support shaft (1031) is adaptively connected to the center hole (602).

6. The durable drawer rail damper according to claim 5, characterized in that: An axial stopper (1033) is formed at the end of the rotation support shaft (1031), and the axial stopper (1033) is buckled with the edge of the central hole (602).

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