Damping hinge assembly and seat tea table with same

Abstract

The utility model discloses a damping hinge assembly and a seat tea table with the damping hinge assembly, and belongs to the technical field of rail transit vehicle seats. The damping hinge assembly comprises a first rod piece and a second rod piece, the second rod piece can be rotatably installed at the end of the first rod piece through a damping shaft, the damping shaft is sleeved with a damping spring capable of rotating around the axis of the damping shaft, and the damping spring is in interference fit with the damping shaft; the end of the first rod piece is provided with a damping hole which receives the damping shaft, can be coupled with the damping spring and enables the position of the damping spring to be fixed, the damping spring of the damping hinge assembly is in interference fit with the damping shaft, and damping force is provided through friction force between the inner wall of the damping spring and the outer wall of the damping shaft. The constant damping force is achieved, and the seat tea table provided with the damping hinge assembly effectively solves the problem that a table plate is instantly unfolded to make collision sounds.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit vehicle seats, in particular to a damping hinge assembly and a seat tea table with the damping hinge assembly. Background Art

[0002] At present, the seats on rail transit vehicles are generally equipped with tea tables on the back of the seats for the rear passengers to use. One side of the tea table is rotatably connected to the seat frame. When in use, the tea table is horizontally unfolded for dining. After use, it is folded behind the table and chair frame to save space and facilitate passengers to enter and exit the seats.

[0003] The traditional tea table is rotatably connected to the seat frame through a connecting shaft, and the connecting shaft has no damping effect. When the tea table knob is turned on, the tea table will instantly unfold, making a sound of rapid collision between the tea table and the limit support block, which is noisy, especially in a quiet environment in the car. The noise is particularly obvious, causing a poor riding experience for passengers who are resting. In addition, the existence of noise will also give users a feeling of poor product quality.

[0004] Therefore, there is an urgent need to develop a damping hinge assembly and a chair tea table having the damping hinge assembly. Utility Model Content

[0005] The utility model aims to provide a damping hinge assembly and a chair tea table with the damping hinge assembly which can solve the problem in the prior art that when a tea table is opened, the table top instantly unfolds and makes a collision sound, thereby generating noise.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a damping hinge assembly, comprising:

[0008] a first rod;

[0009] A second rod, which is rotatably mounted on the end of the first rod via a damping shaft, wherein a damping spring capable of rotating around its axis is sleeved on the damping shaft, and the damping spring is interference fit with the damping shaft;

[0010] Wherein, a damping hole for receiving the damping shaft and being coupled with the damping spring to fix the position of the damping spring is formed at the end of the first rod.

[0011] Further, the damping spring comprises a sleeve portion and a wing portion;

[0012] The shaft sleeve is provided with an expansion joint extending from one end of the shaft sleeve to the other end. One end of the wing portion is connected to the edge of the expansion joint of the shaft sleeve, and the other end extends in a direction away from the axis of the shaft sleeve.

[0013] Furthermore, a slot is formed on a side wall of the damping hole, and the wing portion is received through the slot to prevent the damping spring from rotating in the first rod.

[0014] Furthermore, one end of the damping shaft has a round shaft section on which the damping spring is sleeved, and the round shaft section is provided with a recessed oil storage tank for storing lubricating oil, and the oil storage tank extends from one end of the round shaft section to the other end.

[0015] Furthermore, the second rod member also includes a shaft fixing seat, and the shaft fixing seat is detachably fixedly connected to the damping shaft.

[0016] Furthermore, a plug hole is provided on the end surface of the shaft fixing seat, and a plug-in shaft section which is plug-inly connected to the plug hole is provided at one end of the damping shaft.

[0017] Furthermore, the first rod member is provided with a fourth mounting hole, the shaft fixing seat of the second rod member is provided with a second mounting hole, and the second mounting hole and the fourth mounting hole are provided with connecting members.

[0018] The utility model discloses a chair tea table, comprising: a table top installed on a chair frame, and a damping hinge assembly as described in any one of claims 1, wherein the chair frame and the table top are connected by the damping hinge assembly.

[0019] Furthermore, the seat frame is rotatably connected to the top of the table top, and the table top is locked by the knob. The seat frame is provided with a shock-absorbing rubber pad on the side of the knob for contacting the table top.

[0020] Furthermore, limiting columns are arranged at both ends of the table top on which the damping hinge assembly is mounted, and limiting holes are opened on the seat frame corresponding to the positions of the limiting columns. The limiting columns can extend into the limiting holes, and a limiting block in contact with the limiting columns is fixedly connected above the limiting holes.

[0021] In the above technical solution, the utility model provides a damping hinge assembly and a chair tea table having the damping hinge assembly, and the beneficial effects are:

[0022] The damping hinge assembly provided by the utility model has a damping spring sleeved on the damping shaft of the second rod, the first rod receives the damping shaft and the damping spring through the damping hole, the damping spring and the damping shaft are interference fit to provide a constant damping force, when in use, the damping force is constant when the second rod rotates relative to the first rod under the action of an external force, and the rotation can be stopped when the external force is lost at any position;

[0023] The utility model provides a seat tea table, whose table top is connected to the seat frame by a damping hinge assembly, so that the tea table behind the seat has a damping effect, and has the same beneficial effects as the above-mentioned damping hinge assembly. After the table top is unfolded, the table top can stop at any rotation position of 0-80 degrees, and after the knob is turned on, the table top will not unfold instantly and make a rapid collision sound, which provides a good user experience and helps to improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is an axonometric view of the damping hinge assembly disclosed in the utility model;

[0026] Figure 2 It is an exploded view of the damping hinge assembly disclosed in the utility model;

[0027] Figure 3a It is an axonometric view of the first rod member of the damping hinge assembly disclosed in the utility model;

[0028] Figure 3b It is an exploded view of the first rod member of the damping hinge assembly disclosed in the utility model;

[0029] Figure 3c It is a left view of the first rod of the damping hinge assembly disclosed in the utility model;

[0030] Figure 3d It is a front view of the damping shaft of the damping hinge assembly disclosed in the utility model;

[0031] Figure 3e It is a left view of the damping spring of the damping hinge assembly disclosed in the utility model;

[0032] Figure 4 It is an axonometric drawing of the chair tea table disclosed in the utility model;

[0033] Figure 5 This is a diagram showing the assembly state of the chair tea table board and the damping hinge assembly disclosed in the utility model;

[0034] Figure 6 This is a diagram showing the assembly state of the seat frame and the damping hinge assembly of the chair tea table disclosed in the utility model;

[0035] Figure 7 This is a schematic diagram of the chair tea table disclosed in the utility model in a folded state;

[0036] Figure 8 The utility model is a schematic diagram of a chair tea table in an open state.

[0037] Description of reference numerals:

[0038] 10. first rod; 11. damping hole; 111. slot; 12. fourth mounting hole;

[0039] 20, second rod; 21, shaft fixing seat; 211, plug hole; 212, second mounting hole; 22, damping shaft; 221, round shaft section; 222, oil storage tank; 23, damping spring; 231, wing portion; 232, expansion joint;

[0040] 30. Table top; 31. Screw assembly; 32. Screw assembly; 33. Limiting column;

[0041] 40. Seat frame; 41. Knob; 42. Shock-absorbing rubber pad; 43. Limit block. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] See also Figure 1 , 2 As shown;

[0044] The utility model discloses a damping hinge assembly, comprising: a first rod 10 and two second rods 20;

[0045] The first rod 10 is rotatably connected to the second rod 20 at both ends;

[0046] The second rod 20 includes a shaft fixing seat 21, a damping shaft 22 and a damping spring 23;

[0047] The shaft fixing seat 21 is located at the end of the first rod 10 and is fixedly connected with a damping shaft 22. The damping shaft 22 is sleeved with a damping spring 23 that can rotate around the axis of the damping shaft 22. The end of the first rod 10 is provided with a damping hole 11 that receives the damping shaft 22 and can couple with the damping spring 23 and fix the position of the damping spring 23. The damping spring 23 is elastically deformed to be interference fit with the damping shaft 22, so that the friction between the inner wall of the damping spring 23 and the outer wall of the damping shaft 22 provides a damping force.

[0048] When in use, the first rod 10 is fixed in position, the second rod 20 rotates relative to the first rod 10, and the damping spring 23 is fixed in position in the damping hole 11 of the first rod 10 and provides a constant damping force, so that the damping force is constant when the second rod 20 rotates relative to the first rod 10 under the action of an external force, and the second rod 20 can stop rotating when the external force is lost at any position;

[0049] See also Figure 3e As shown:

[0050] The damping spring 23 includes a sleeve portion and a wing portion 231;

[0051] The damping spring 23 is made of an elastic material, such as spring steel, and can of course be made of other elastic materials that can achieve self-elastic deformation in the prior art. The sleeve portion of the damping spring 23 is provided with an expansion joint 232, and the expansion joint 232 extends from one end of the sleeve portion to the other end. The sleeve portion is symmetrically integrally formed with wing portions 231 on both sides of the expansion joint 232. One end of the wing portion 231 is connected to the edge position of the expansion joint 232 of the sleeve portion, and the other end extends in a direction away from the axis of the sleeve portion. The first rod 10 has damping holes 11 at both ends, and the damping shaft 22 and the damping spring 23 are accommodated through the damping hole 11. The cross-sectional shape of the damping hole 11 is adapted to the cross-sectional shape of the damping spring 23, see Figure 2 As shown, the damping hole 11 is provided with a slot 111, and the slot 111 receives two wing portions 231 to block the damping spring 23 from rotating in the first rod 10;

[0052] See also Figure 3b As shown:

[0053] One end of the shaft fixing seat 21 can be detachably connected to the damping shaft 22, and the end surface of the shaft fixing seat 21 is provided with a plug hole 211, see Figure 3c As shown, first mating surfaces are processed on both sides of the plug hole 211, so that the plug hole 211 is a square circular hole, and a plug-in shaft section is provided at one end of the damping shaft 22, and second mating surfaces are processed on both sides of the plug-in shaft section, so that the plug-in shaft forms a square circular shaft whose cross section matches the cross section of the plug hole 211. When assembling, the plug-in shaft section can be inserted into the plug hole 211 of the shaft fixing seat 21, and the first mating surface and the second mating surface cooperate to prevent the damping shaft 22 from rotating relative to the shaft fixing seat 21, which is convenient for assembly. The damping shaft 22 has a round shaft section 221 away from the plug-in shaft section end, and a damping spring 23 is sleeved on the round shaft section 221;

[0054] See also Figure 3d As shown:

[0055] The damping shaft 22 is a stepped shaft, one end of the damping shaft 22 is a plug-in shaft section, and the other end is a round shaft section 221. The round shaft section 221 is provided with a recessed oil storage tank 222, and the oil storage tank 222 extends from one end of the round shaft section 221 to the other end. The oil storage tank 222 is used to store lubricating oil. There can be multiple oil storage tanks 222, which are evenly distributed along the circumference of the round shaft section 221. The damping spring 23 is installed on the round shaft section 221 of the damping shaft 22. The damping spring 23 can rotate on the round shaft section 221, and lubricating oil is stored in the oil storage tank 22. Under the action of lubrication by the lubricating oil, an oil film is formed between the inner wall of the damping spring 23 and the outer wall of the round shaft section 221. When the damping spring 23 rotates on the round shaft section 221, no sound of frictional contact between metals is emitted.

[0056] In the above technical solution, the damping hinge assembly provided by the utility model has a damping spring 23 sleeved on the damping shaft 22 of the second rod 20, and the first rod 10 receives the damping shaft 22 and the damping spring 23 through the damping hole 11. The damping spring 23 and the damping shaft 22 are interference-fitted to provide a constant damping force. When in use, the damping force is constant when the second rod 20 rotates relative to the first rod 10 under the action of an external force, and the second rod 20 can stop rotating when the external force is lost at any position.

[0057] See also Figure 4 , 5 , 6 as shown:

[0058] The utility model discloses a chair tea table, comprising a table board 30 mounted on a chair frame 40, and the above-mentioned damping hinge assembly;

[0059] A first mounting hole is provided on one side of the table top 30, and the first mounting hole is a threaded hole. Second mounting holes 212 are provided at both ends of the second rod 20 of the damping hinge assembly. The screw assembly 31 passes through the second mounting hole 212 and is threadedly connected to the first mounting hole to achieve a fixed connection between the tea table top 30 and the damping hinge assembly. Figure 5 As shown;

[0060] The seat frame 40 is provided with a third mounting hole, the first rod 10 is provided with a fourth mounting hole 12, the fourth mounting hole 12 is a threaded hole, the screw assembly 32 passes through the third mounting hole and is threadedly connected to the fourth mounting hole 12, so as to realize the fixed connection between the seat frame 40 and the damping hinge assembly, see Figure 6 As shown;

[0061] See also Figure 7 As shown:

[0062] In order to ensure that the table board 30 is fixed in position when folded, in a preferred embodiment, the seat frame 40 is rotatably connected to the top of the table board 30, and after the table board 30 is folded and stowed, the table board 30 is locked by the knob 41 to fix the table board 30 to the rear side of the seat frame;

[0063] In order to further reduce the noise when the tea table is in use, the seat frame 40 is also provided with a shock-absorbing rubber pad 42, and the shock-absorbing rubber pad 42 is distributed on both sides of the knob 42. After the table top 30 is folded, the shock-absorbing rubber pad 42 is in buffer contact with the table top 30;

[0064] See also Figure 8 As shown:

[0065] Preferably, limiting posts 33 are arranged at both ends of the table top 30 on the side where the damping hinge assembly is installed, and limiting holes are opened at the positions of the limiting posts 33 on the seat frame 40, and the limiting posts 33 can be inserted into the limiting holes. A limiting block 43 is fixedly connected above the limiting hole, and the limiting block 43 abuts against the limiting posts 33 of the table top 30, so that the table top 30 is kept in a horizontal state when it is opened. When in use, the knob 41 is rotated to a horizontal position, and the table top 30 maintains a constant damping force during the flipping process and can stop at any position. When the table top 30 is rotated to a horizontal position, the limiting block 43 locks the table top 30 to prevent the table top 30 from continuing to rotate.

[0066] In the above technical scheme, the utility model provides a chair tea table, and the chair tea table table top 30 is connected to the seat frame 40 through a damping hinge assembly, so that the tea table behind the seat has a damping effect. After unfolding, the table top 30 can stop at any rotation position of 0-80 degrees, and after the knob is turned on, the table top will not unfold instantly and make a rapid collision sound, which provides a good user experience and helps to improve product quality.

[0067] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A damping hinge assembly, characterized in that: include: A first rod (10); A second rod (20) is rotatably mounted on the end of the first rod (10) via a damping shaft (22), wherein the damping shaft (22) is sleeved with a damping spring (23) capable of rotating around its axis, and the damping spring (23) is interference fit with the damping shaft (22); Wherein, a damping hole (11) is provided at the end of the first rod (10) for receiving the damping shaft (22) and being capable of coupling with the damping spring (23) and fixing the position of the damping spring (23).

2. The damping hinge assembly according to claim 1, characterized in that ； The damping spring (23) comprises a shaft sleeve portion and a wing portion (231); The shaft sleeve portion is provided with an expansion joint (232), and the expansion joint (232) extends from one end of the shaft sleeve portion to the other end; one end of the wing portion (231) is connected to the edge of the expansion joint (232) of the shaft sleeve portion, and the other end extends in a direction away from the axis of the shaft sleeve portion.

3. The damping hinge assembly according to claim 2, characterized in that; A slot (111) is provided on the side wall of the damping hole (11), and the wing portion (231) is received through the slot (111) so as to prevent the damping spring (23) from rotating in the first rod (10).

4. The damping hinge assembly according to claim 1, It is characterized by: One end of the damping shaft (22) has a circular shaft section (221) on which the damping spring (23) is mounted, and the circular shaft section (221) is provided with a recessed oil storage groove (222) for storing lubricating oil, and the oil storage groove (222) extends from one end of the circular shaft section (221) to the other end.

5. The damping hinge assembly according to claim 1, It is characterized by: The second rod (20) further comprises a shaft fixing seat (21), and the shaft fixing seat (21) is detachably fixedly connected to the damping shaft (22).

6. The damping hinge assembly according to claim 5, characterized in that ； The end surface of the shaft fixing seat (21) is provided with a plug hole (211), and one end of the damping shaft (22) is provided with a plug-in shaft section which is plug-in-pull connected to the plug hole (211).

7. The damping hinge assembly according to claim 1, characterized in that; The first rod (10) is provided with a fourth mounting hole (12), the shaft fixing seat (21) of the second rod (20) is provided with a second mounting hole (212), and the second mounting hole (212) and the fourth mounting hole (12) are provided with connecting members.

8. A chair tea table, characterized in that: include: A table top (30) mounted on a seat frame (40), and a damping hinge assembly as described in any one of claims 1 to 7, wherein the seat frame (40) and the table top (30) are connected via the damping hinge assembly.

9. The chair tea table according to claim 8, characterized in that ； The seat frame (40) is rotatably connected to the top of the table top (30) with a knob (41), and the table top (30) is locked by the knob (41). The seat frame (40) is provided with a shock-absorbing rubber pad (42) on the side of the knob (41) for contacting the table top (30).

10. The chair tea table according to claim 8, It is characterized by: Limiting columns (33) are arranged at both ends of the table top (30) on the side where the damping hinge assembly is installed, and limiting holes are provided on the seat frame (40) corresponding to the positions of the limiting columns (33). The limiting columns (33) can extend into the limiting holes, and a limiting block (43) in contact with the limiting columns (33) is fixedly connected above the limiting holes.

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