Damper with adjustable damping angle

Abstract

The invention discloses a damper with adjustable damping angle, which comprises: an outer shell, comprising an inner cavity, wherein the lower end of the inner cavity is open, an end portion is arranged at the upper end, a through hole is arranged in the middle of the end portion, and a radial spacer A is arranged on the inner wall of the inner cavity; a rotating shaft, comprising a circular shaft section and a flat shaft section, rotatably arranged in the inner cavity, the circular shaft section is provided with a radial spacer B, the spacer B extends to the inner wall of the inner cavity, and the spacer A and the spacer B separate the inner cavity into a front cavity and a rear cavity; an end cover, fixedly arranged at the lower end opening of the inner cavity; an adjusting disk, comprising a circular disk portion and an extending portion, and a rotating seal is arranged on the end cover, the upper end surface of the circular disk portion is simultaneously pressed against the lower end surfaces of the spacer A and the spacer B, the upper end surface of the circular disk portion is provided with an oil groove, and the extending portion is inserted from the shaft hole M to the outside; the invention realizes adjusting the damping angle of the damper by setting the relative rotation angle between the adjusting disk and the outer shell.

Description

Technical Field

[0001] The invention relates to a damper, in particular to a damper with adjustable damping angle. Background Art

[0002] In the prior art, the damper used in the toilet cover is generally a rotary damper, which is required to have no damping and save effort when opening the cover, and to play a damping role when closing the cover, so that it falls slowly, for the sake of safety and silence. The means of implementation is to set an oil groove on the outer shell of the damper, and the cross-sectional area of ​​the oil groove changes with the rotation of the shaft. However, there are many types of covers with different weights, and customers have different requirements for the slow-falling angle of the damper. Therefore, it is necessary to develop multiple dampers for different usage occasions and different customer needs. The basic changes are also achieved by changing the parameters of the oil groove, which will greatly increase the design and development costs, mold costs, and production management costs of the damper manufacturers. Summary of the invention

[0003] The technical problem to be solved by the present invention is aimed at the deficiencies of the above-mentioned prior art. A damper with adjustable damping angle is provided, which can freely adjust the internal oil groove according to different customer needs and different cover plate weights, thereby realizing the control of the damping angle and the control of the damping time.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a damper with adjustable damping angle, characterized by comprising: a shell, including an inner cavity, the lower end of the inner cavity is open, the upper end is provided with an end portion, the middle of the end portion is provided with a through hole, a radial spacer A is provided on the inner wall of the inner cavity, and the upper part of the spacer A is fixedly connected to the end portion;

[0005] A rotating shaft, comprising a round shaft section and a flat shaft section, rotatably arranged in the inner cavity, the round shaft section is provided with a radial spacer B, the spacer B extends to the inner wall of the inner cavity, the flat shaft section extends outward through the through hole, and the spacer A and the spacer B separate the inner cavity into a front cavity and a rear cavity;

[0006] An end cover is fixedly arranged at the lower end opening of the inner cavity, and an axial hole M is arranged in the middle;

[0007] The adjusting disk includes a disc portion and an extension portion, wherein a rotary seal is arranged on the end cover, wherein the upper end surface of the disc portion abuts against the lower end surfaces of the diaphragm A and the diaphragm B at the same time, an oil groove is arranged on the upper end surface of the disc portion, and the extension portion is inserted from the shaft hole M to the outside;

[0008] The damping angle of the damper is adjusted by setting the relative rotation angle between the adjustment disk and the housing.

[0009] Preferably, it further comprises an adjusting knob and a fastening nut, wherein the adjusting knob is fixedly arranged on the extending portion and is stopped in cooperation with the end cover through a stop structure, and the fastening nut is used to fix the adjusting knob.

[0010] Preferably, the stop structure includes a protrusion and a recessed hole that cooperate with each other and are respectively arranged on the contact surface between the end cover and the adjusting knob.

[0011] Preferably, the extension portion is provided with a cutout and a thread, and an axial hole N matching with the cutout is provided in the middle of the adjusting knob; the fastening nut matches with the thread and fastens the adjusting knob.

[0012] Preferably, it also includes a one-way valve, which is fixedly arranged on the rotating shaft to allow the liquid between two adjacent chambers to flow in one direction.

[0013] Preferably, the one-way valve includes a spring and a blocking ball, and an oil filling hole section, an oil through hole section, a channel E, and a channel F are arranged in the middle of the rotating shaft. The diameter of the oil filling hole section is larger than the diameter of the oil through hole section. The channel E connects the oil filling hole section and the front cavity, and the channel F connects the oil through hole section and the rear cavity; the blocking ball is movably arranged in the oil filling hole section under the action of the preload force of the spring and moves between blocking and opening the opening position of the oil through hole section.

[0014] Preferably, it further comprises a plug, which is sealingly fixedly arranged on the rotating shaft to block the oil filling hole and is pre-tightened against the spring.

[0015] Preferably, a pre-tightening member is provided on the surface of the end cover against which the adjusting disk abuts.

[0016] Preferably, the plug is connected and fixed to the rotating shaft via a threaded structure.

[0017] Preferably, the spacers A are provided in pair, arranged at 180° with the axis array of the shell; and the spacers B are provided in pair, arranged at 180° with the axis array of the rotating shaft.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention achieves the purpose of controlling the damping angle and damping time according to the cover plate weight requirements and customer requirements by setting the oil groove on the adjustable angle adjustment disk;

[0020] 2. The present invention has a simple structure, is easy to form, assemble and adjust;

[0021] 3. The present invention replaces the performance of multiple products with one product, saving production and manufacturing costs and management and after-sales costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A three-dimensional diagram of a damper with adjustable damping angle according to a preferred embodiment of the present invention;

[0024] Figure 2 , 3 A three-dimensional exploded view of a damper with adjustable damping angle according to a preferred embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of a damper with adjustable damping angle according to a preferred embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a damper oil flow with adjustable damping angle according to a preferred embodiment of the present invention;

[0027] Figure 6 A detailed diagram of a damper shaft with adjustable damping angle according to a preferred embodiment of the present invention.

[0028] In the figure:

[0029] 100-housing; 110-inner cavity; 120-end; 121-through hole; 130-spacer A; 131-front cavity; 132-rear cavity; 140-anti-rotation rib

[0030] 200-rotating shaft; 210-round shaft section; 220-flat shaft section; 230-spacer B; 240-oil injection hole section; 250-channel E; 260-channel F; 270-oil hole section; 280-positioning shaft;

[0031] 300-adjusting plate; 310-disc portion; 311-oil groove; 320-extension portion; 330-cut; 340-thread; 350-positioning hole

[0032] 400-end cover; 410-fixing groove; 420-concave hole; 430-axis hole M

[0033] 500-adjustment knob; 510-axis hole N; 520-anti-slip groove; 530-protrusion

[0034] 600-fastening nut; 610-anti-slip pattern

[0035] 700-Spring

[0036] 800-Ball Blocking

[0037] 900-plug; 910-seal; 920-slot

[0038] 1100-Preload. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. The embodiments in the basic present invention, all other embodiments obtained by ordinary technicians in this field without creative work, belong to the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does 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 limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 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 the present invention can be understood according to specific circumstances.

[0044] The following is a specific description with reference to embodiments.

[0045] like Figures 1 to 6 As shown, a damper with adjustable damping angle of the present invention is characterized by comprising:

[0046] The housing 100 comprises an inner cavity 110, wherein the lower end of the inner cavity 110 is open, an end portion 120 is arranged at the upper end, a through hole 121 is arranged in the middle of the end portion 120, a radial spacer A130 is arranged on the inner wall of the inner cavity 110, and the upper part of the spacer A130 is fixedly connected to the end portion 120, and a pair of anti-rotation ribs 140 are arranged on the outer wall of the housing 100;

[0047] The rotating shaft 200 is provided with a flat shaft section 220, a round shaft section 210, and a positioning shaft 280 in order from top to bottom, and is rotatably arranged in the inner cavity 110. The round shaft section 210 is provided with a radial spacer B230, and the spacer B230 extends to the inner wall of the inner cavity 110. The flat shaft section 220 extends outward through the through hole 121, and the spacer A130 and the spacer B230 separate the inner cavity 110 into a front cavity 131 and a rear cavity 132;

[0048] The end cover 400 is fixedly arranged at the lower opening of the inner cavity 110, and an axial hole M430 is arranged in the middle;

[0049] The adjusting disk 300 includes a disk portion 310 and an extension portion 320. The rotary seal is arranged on the end cover 400. The upper end surface of the disk portion 310 abuts against the lower end surfaces of the diaphragm A130 and the diaphragm B230. The upper end surface of the disk portion 310 is provided with an oil groove 311 and a positioning hole 350. The oil groove 311 is arranged in an annular shape. The positioning hole 350 cooperates with the positioning shaft 280. The extension portion 320 is inserted from the shaft hole M430 to the outside. The oil groove 311 includes two sections, which are arranged in an annular shape with the axis of the rotating shaft 200, and the cross-sectional area of ​​each section is different.

[0050] By setting the relative rotation angle between the adjustment disk 300 and the housing 100 , the damping angle of the damper can be adjusted.

[0051] In this embodiment, an adjusting knob 500 and a fastening nut 600 are further included. The adjusting knob 500 is fixedly disposed on the extension portion 320 and is stopped by cooperating with the end cover 400 through a stop structure. The fastening nut 600 is used to fix the adjusting knob 500.

[0052] In this embodiment, the stop structure includes a protrusion 530 and a recessed hole 420 that cooperate with each other, which are respectively arranged on the contact surface of the end cover 400 and the adjusting knob 500. The protrusion 530 is arranged on the adjusting knob 500, and the recessed hole 420 is arranged on the end cover 400, and 24 protrusions 530 and recessed holes 420 are arranged in an axial array. Arranging multiple arrays can make the positioning more firm and reliable, and the number of arrays can be set according to different adjustment precisions. If the adjustment precision is 5°, 72 arrays can be arranged.

[0053] In this embodiment, the extension portion 320 is provided with a cutout 330 and a thread 340, and an axial hole N510 matching the cutout 330 is provided in the middle of the adjusting knob 500; the fastening nut 600 cooperates with the thread 340 and fastens the adjusting knob 500, and the fastening direction is the direction in which the protrusion 530 and the recessed hole 420 cooperate and press together.

[0054] In this embodiment, a one-way valve is also included, and the one-way valve is fixedly arranged on the rotating shaft 200 to allow the liquid between two adjacent chambers to flow in one direction. The purpose of setting the one-way valve is to make the rotating shaft 200 easy in one direction and damped in the opposite direction. Similarly, the one-way valve may not be set. In the case of not setting the one-way valve, the coverage range of the oil groove 311 can cover the entire rotation path of the rotating shaft 200, and its performance will become that no matter whether it is forward rotation or reverse rotation, the damping speed depends on the current oil cross-sectional area.

[0055] In this embodiment, the one-way valve includes a spring 700 and a ball blocking 800. An oil filling hole section 240, an oil through hole section 270, a channel E250, and a channel F260 are arranged in the middle of the rotating shaft 200. The diameter of the oil filling hole section 240 is larger than the diameter of the oil through hole section 270. The channel E250 connects the oil filling hole section 240 and the front cavity 131, and the channel F260 connects the oil through hole section 270 and the rear cavity 132. The ball blocking 800 is movably arranged in the oil filling hole section 240 under the action of the pre-tightening force of the spring 700 and moves between blocking and opening the opening position of the oil through hole section 270. This one-way valve mechanism reacts sensitively and quickly, and can have a damping effect even if the cover is released after being lifted at a small angle. Conventional rotary dampers use a blade-type one-way valve mechanism, and its structure requires a rotational stroke to make the one-way valve work. Therefore, the effect is that the cover will not have a damping effect when it is released after being lifted at a small angle, which will cause a lot of noise.

[0056] In this embodiment, a plug 900 is further included, which is sealed and fixedly arranged on the rotating shaft 200 to block the oil injection hole and is pre-tightened against the spring 700. A sealing member 910 is arranged on the plug 900 to block the oil injection hole.

[0057] In this embodiment, a pre-tightening member 1100 is provided on the surface where the end cover 400 abuts against the adjusting disk 300. The pre-tightening member 1100 can effectively make the adjusting disk 300 abut against the lower end surfaces of the diaphragm A130 and the diaphragm B230, ensuring the airtightness of the front cavity 131 and the rear cavity 132. Meanwhile, in this embodiment, the pre-tightening member 1100 is an O-ring, which can realize both the pre-tightening function and the sealing function.

[0058] In this embodiment, the plug 900 is connected and fixed to the rotating shaft 200 via a threaded structure. A slot 920 is also provided on the plug 900 to facilitate disassembly and assembly with a screwdriver.

[0059] In this embodiment, the spacers A130 are arranged in pairs, arranged at 180° with the axis of the housing 100; the spacers B230 are arranged in pairs, arranged at 180° with the axis of the shaft 200. The symmetrical arrangement can make the force of the entire mechanism uniform and improve reliability.

[0060] In this embodiment, an anti-skid groove 520 is provided on the outer ring surface of the adjusting knob 500 , and an anti-skid pattern 610 is provided on the outer ring surface of the fastening nut 600 .

[0061] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A damper with adjustable damping angle, characterized in that ,include: The housing comprises an inner cavity, wherein the lower end of the inner cavity is open, an end portion is arranged at the upper end, a through hole is arranged in the middle of the end portion, a radial spacer A is arranged on the inner wall of the inner cavity, and the upper part of the spacer A is fixedly connected to the end portion; The rotating shaft comprises a flat shaft segment, a round shaft segment and a positioning shaft which are sequentially arranged from top to bottom, the rotating shaft is rotatably arranged in the inner cavity, the round shaft segment is provided with a radial spacer B, the spacer B extends to the inner wall of the inner cavity, the flat shaft segment extends outward through the through hole, and the spacer A and the spacer B separate the inner cavity into a front cavity and a rear cavity; An end cover is fixedly arranged at the lower end opening of the inner cavity, and an axial hole M is arranged in the middle; An adjusting disk, comprising a disk portion and an extension portion, wherein the adjusting disk is rotatably sealed and arranged on the end cover, wherein the upper end surface of the disk portion abuts against the lower end surfaces of the diaphragm A and the diaphragm B at the same time, wherein an oil groove and a positioning hole are arranged on the upper end surface of the disk portion, wherein the oil groove is arranged in an annular shape, the positioning hole cooperates with the positioning shaft, and the extension portion is inserted from the shaft hole M to the outside; The damping angle of the damper is adjusted by setting the relative rotation angle between the adjustment disk and the housing.

2. A damper with adjustable damping angle according to claim 1, characterized in that: It also includes an adjusting knob and a fastening nut. The adjusting knob is fixedly arranged on the extension portion and is stopped in cooperation with the end cover through a stop structure. The fastening nut is used to fix the adjusting knob.

3. A damper with adjustable damping angle according to claim 2, characterized in that: The stop structure comprises a protrusion and a concave hole which cooperate with each other and are respectively arranged on the contact surface between the end cover and the adjusting knob.

4. A damper with adjustable damping angle according to claim 3, characterized in that: The extension portion is provided with a cutout and a thread, and the middle of the adjusting knob is provided with an axial hole N matched with the cutout; the fastening nut is matched with the thread and fastens the adjusting knob.

5. A damper with adjustable damping angle according to claim 4, characterized in that: It also includes a one-way valve, which is fixedly arranged on the rotating shaft to allow the liquid between two adjacent chambers to flow in one direction.

6. A damper with adjustable damping angle according to claim 5, characterized in that: The one-way valve includes a spring and a blocking ball. An oil filling hole section, an oil passing hole section, a channel E, and a channel F are arranged in the middle of the rotating shaft. The diameter of the oil filling hole section is larger than the diameter of the oil passing hole section. The channel E connects the oil filling hole section and the front cavity, and the channel F connects the oil passing hole section and the rear cavity. The blocking ball is movably arranged in the oil filling hole section under the action of the preload force of the spring and moves between blocking and opening the opening position of the oil passing hole section.

7. A damper with adjustable damping angle according to claim 6, characterized in that: It also includes a plug, which is sealingly fixedly arranged on the rotating shaft to block the oil filling hole and is pre-tightened against the spring.

8. A damper with adjustable damping angle according to claim 7, characterized in that: A pre-tightening member is arranged on the surface where the end cover abuts against the adjusting disk.

9. A damper with adjustable damping angle according to claim 8, characterized in that: The plug is connected and fixed to the rotating shaft via a threaded structure.

10. A damper with adjustable damping angle according to any one of claims 1 to 9, characterized in that: The spacers A are arranged in a pair, and are arranged at 180° with the axis of the shell in an array; the spacers B are arranged in a pair, and are arranged at 180° with the axis of the shaft in an array.

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