Spring preassembling structure of damping buffer device

Abstract

The utility model discloses a spring preassembling structure of a damping buffer device, which comprises a first hinge arranged on a door frame and a second hinge arranged on a door body, the first hinge and the second hinge are rotatably connected through the damping buffer device, a compression spring is arranged in the damping buffer device, and the compression spring is arranged on the first hinge. The compression spring provides compression stored energy when the first hinge and the second hinge rotate relatively; wherein the compression spring is sleeved on the spring pin, one end of the spring pin is provided with a stop part, the other end of the spring pin is provided with an expansion part, the expansion part is provided with a limiting ring in a penetrating mode, one end of the compression spring abuts against the stop part, the other end of the compression spring abuts against the limiting ring, and an expansion piece is inserted in the expansion part. The expansion part is pulled out of the expansion part, the expansion part elastically retracts out of the limiting ring, the compression spring is released and acts on the transmission shaft, and therefore the pre-pressing installation work is completed, installation personnel do not need to adjust the door closing force any more, the later debugging work of the installation personnel is reduced, and the installation progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers, in particular to a spring pre-installed structure of a damping buffer device. Background Art

[0002] Damping buffers are used to consume impact energy. The most common type is hydraulic damping buffers. Its working principle is: when the hydraulic damping buffer is subjected to impact force, the piston in the buffer is pushed to move, and at the same time, the oil in the buffer cavity is squeezed out from the throttle port and enters another cavity. At this time, the friction between the throttle port and the oil and the internal friction between the oil molecules form a damping force on the impact load. This process consumes a lot of kinetic energy and plays a buffering role. However, when the hydraulic damping buffer is subjected to an impact load, due to the built-in oil circuit to achieve a buffering effect, a large oil pressure will be formed locally in the buffer cavity. The structure of the door for adjusting the tightness of the opening and closing is relatively complex and requires good sealing. Not only is the processing technology complicated and the production cost high, but also due to structural limitations, the service life is short, making it difficult to repair and replace important parts.

[0003] On January 13, 2023, the applicant applied for a multi-scenario damping and buffering device structure with announcement number CN218294298U. The damper is installed on the inside of the spring. When the spring energy is released instantly, the shaft core is pressed to slide, and the shaft core drives the movable shaft of the damper to move. At this time, the damper offsets part of the spring energy storage, causing the shaft core to slide slowly to achieve the buffering function. However, during the door installation process, the hinge with a damping and buffering device needs to be installed when the hinge is in the open state. At this time, the spring in the damping and buffering device is still in a fully released state. In order to achieve the automatic return effect of the door body, the customer must adjust the compression force of the spring after the door installation is completed, resulting in low installation efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a spring pre-installed structure of a damping buffer device, which has solved the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spring pre-installed structure of a damping and buffering device, comprising a first hinge installed on a door frame and a second hinge installed on a door body, wherein the first hinge and the second hinge are rotationally connected via a damping and buffering device, wherein a compression spring is arranged in the damping and buffering device, and the compression spring provides compression energy storage when the first hinge and the second hinge rotate relative to each other; wherein the compression spring is sleeved on a spring pin, wherein a stop portion is arranged at one end of the spring pin, and an expansion portion is arranged at the other end, a limiting ring is passed through the expansion portion, so that one end of the compression spring abuts against the stop portion, and the other end abuts against the limiting ring, and an expansion piece is inserted in the expansion portion.

[0006] Furthermore, the diameter of the expansion member is consistent with the inner diameter of the expansion portion.

[0007] Furthermore, a hand-pull portion is provided at one end of the expansion member away from the expansion portion.

[0008] Furthermore, the damping and buffering device also includes a sleeve, a rotating sleeve, a transmission shaft and a damper. The rotating sleeve is rotatably arranged on the outer wall surface of the sleeve, and the rotating sleeve drives the transmission shaft in the sleeve to move axially. The two ends of the transmission shaft are respectively in contact with the stopper and the damper.

[0009] Furthermore, a cross pin is radially penetrated on the transmission shaft, a rotating part for rotating the rotating sleeve is provided on the sleeve, a spiral groove is provided on the wall of the rotating part, the spiral groove radially penetrates the active cavity, a long groove is axially provided on the wall of the rotating sleeve, the cross pin is slidably matched with the spiral groove and the long groove, and the end of the cross pin is slidably matched with the long groove, so that the transmission shaft is driven to move axially when the rotating sleeve rotates.

[0010] Further, the sleeve includes a first sleeve and a second sleeve, the rotating part is provided on one end of the first sleeve, and one end of the rotating part away from the first sleeve is connected to the second sleeve.

[0011] Furthermore, the compression spring is arranged in the second sleeve, so that one end of the compression spring acts on one end of the transmission shaft and the other end abuts against a limit ring, and the limit ring is threaded in the second sleeve.

[0012] Furthermore, one end of the damper abuts against one end of the transmission shaft away from the compression spring, and the other end abuts against the damping adjustment member, and the damping adjustment member is threaded in the first sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: a compression spring for providing compression energy storage is sleeved on a spring pin, one end of the spring pin is provided with a stop portion, and the other end is provided with an expansion portion, so that one end of the compression spring abuts against the stop portion, and the other end abuts against the limiting ring on the expansion portion, and an expansion piece is inserted in the expansion portion before the door is installed, and the expansion portion is inserted into the expansion piece to put it in an expanded state, and the limiting ring is restricted by the expansion portion and cannot be separated from the spring pin, and the compression spring is contracted by the limiting ring and the stop portion to prevent the compression spring from exerting force on other components; the two hinges are respectively connected to the door frame and the door body, and then the expansion piece is pulled out of the expansion portion, and the expansion portion elastically shrinks and disengages from the limiting ring, so that the compression spring is released and exerts force on the drive shaft, thereby completing the pre-compression installation work, and the installer no longer needs to adjust the door closing force, thereby reducing the installer's later debugging work and speeding up the installation progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional viewing angle structure of the utility model.

[0015] Figure 2 Schematic diagram of explosion of the utility model

[0016] Figure 3 It is a three-dimensional structural diagram of the damping buffer device in the utility model.

[0017] Figure 4 It is a cross-sectional schematic diagram of the damping buffer device in the utility model.

[0018] Figure 5 It is a schematic diagram of the spring pre-installed structure in the utility model.

[0019] Figure 6 It is a connection schematic diagram of the spring pre-installed structure in the utility model.

[0020] Figure 7 It is a schematic diagram of the installation of the spring pre-installed structure in the utility model.

[0021] Figure 8 This is a schematic diagram of the installation of a spring pre-installed structure in another embodiment of the utility model.

[0022] In the figure: a first hinge 1, a second hinge 2, a damping buffer device 3, a sleeve 31, a rotating part 311, a spiral groove 312, a first sleeve 31a, a second sleeve 31b, a rotating sleeve 32, a long groove 321, a transmission shaft 33, a cross pin 331, a compression spring 34, a damper 35, a spring pin 36, a stop part 361, an expansion part 362, a limiting ring 37, an expansion part 38, and a damping adjustment part 39. DETAILED DESCRIPTION

[0023] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0024] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0025] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0026] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0027] like Figures 1 to 7 A spring pre-installed structure of a damping buffer device shown in the figure comprises a first hinge 1 installed on a door frame and a second hinge 2 installed on a door body, the first hinge 1 and the second hinge 2 are rotatably connected via a damping buffer device 3, a compression spring 34 is arranged in the damping buffer device 3, and the compression spring 34 provides compression energy storage when the first hinge 1 and the second hinge 2 rotate relative to each other;

[0028] Specifically, the compression spring 34 is sleeved on the spring pin 36, one end of the spring pin 36 is provided with a stop portion 361, and the other end is provided with an expansion portion 362, and a limiting ring 37 is passed through the expansion portion 362, so that one end of the compression spring 34 abuts against the stop portion 361, and the other end abuts against the limiting ring 37, and an expansion piece 38 is inserted in the expansion portion 362; to be precise, by sleeveing ​​the compression spring 34 for providing compression energy storage on a spring pin 36, one end of the spring pin 36 is provided with a stop portion 361, and the other end is provided with an expansion portion 362, so that one end of the compression spring 34 abuts against the stop portion 361, and the other end abuts against the limiting ring 37 on the expansion portion 362, and an expansion piece 38 is inserted in the expansion portion 362 before the door is installed. The expansion piece 38 and the expansion part 362 are inserted into the expansion piece 38 to make it in an expanded state. The limiting ring 37 is restricted by the expansion part 362 and cannot be separated from the spring pin 36. The compression spring 34 is contracted by the limiting ring 37 and the stop part 361 to prevent the compression spring 34 from exerting force on other components. It should be understood that the first hinge 1 and the second hinge 2 are fixedly connected to the door frame and the door body respectively. After the installation is completed, the expansion piece 38 can be pulled out from the expansion part 362, and the expansion part 326 elastically retracts and disengages from the limiting ring 37, so that the compression spring 34 releases its force on the drive shaft, thereby completing the pre-compression installation work. The installer no longer needs to adjust the closing force of the door, which reduces the installer's later debugging work and speeds up the installation progress.

[0029] It should be noted that before pulling out the expansion piece 38, the door body needs to be in a relatively open state, that is, when the transmission shaft 33 is relatively close to the position of the compression spring 34, to reduce the instantaneous impact force on the transmission shaft 33 when the compression spring 34 is released, so as to avoid damage to the damping buffer device.

[0030] The diameter of the expansion piece 38 is consistent with the inner diameter of the expansion part 362. To be precise, the expansion part 362 includes a symmetrical elastic sheet and a conical expansion sleeve of the elastic sheet. An expansion groove is provided between the elastic sheets. The diameter of the conical expansion sleeve is larger than the inner hole diameter of the limiting ring 37. After the expansion piece 38 is inserted into the expansion part 362, the conical expansion sleeve remains in its original state. When the expansion piece 38 is pulled out of the expansion part 362, the spring pin 36 moves axially forward under the action of the compression spring 34. It should be understood that the edges at both ends of the conical expansion sleeve are inclined structures, so that the spring pin 36 can leave the limiting ring 37 more smoothly.

[0031] A hand-pull portion 381 is provided at one end of the expansion member 38 away from the expansion portion 362. The hand-pull portion 381 is preferably a circular ring, which is movably provided at the end of the expansion member 38. After the hinge is installed, the expansion member 38 can be pulled out by hand by buckling it at the circular ring, which is convenient for operation.

[0032] Reference Figure 8 In another embodiment, the expansion member 38 is made of plastic material, and the hand-pull portion 381 can be replaced by a round cap structure that is an integral structure with the expansion member 38. The expansion member 38 made of plastic material can reduce production costs.

[0033] The damping and buffering device 3 further includes a sleeve 31, a rotating sleeve 32, a transmission shaft 33 and a damper 35. The rotating sleeve 32 is rotatably arranged on the outer wall surface of the sleeve 31, and the rotating sleeve 32 drives the transmission shaft 33 in the sleeve 31 to move axially. The two ends of the transmission shaft 33 are respectively in contact with the stopper 361 and the damper 35; wherein the sleeve 31 is connected to the first hinge 1 through the spline pattern on its outer wall surface, and the rotating sleeve 32 is connected to the second hinge 2 through the spline pattern on its outer wall surface;

[0034] Specifically, a transverse pin 331 is radially penetrated on the transmission shaft 33, a rotating portion 311 for rotating the rotating sleeve 32 is provided on the sleeve 31, a spiral groove 312 is provided on the wall surface of the rotating portion 311, and the spiral groove 312 penetrates the active cavity in the radial direction, and a long groove 321 is axially provided on the wall surface of the rotating sleeve 32, the transverse pin 331 is slidably matched with the spiral groove 312 and the long groove 321, and the end of the transverse pin 331 is slidably matched with the long groove 321, so that the transmission shaft 33 is driven to move axially when the rotating sleeve 32 rotates. It should be understood that when the first hinge 1 and the second hinge 2 are relatively opened, the rotating sleeve 32 rotates and causes the transverse pin 331 to move along the spiral groove 312 and the long groove 321. 12. The long groove 321 slides, and the cross pin 331 drives the transmission shaft 33 to move axially forward. When the rotating sleeve 32 reaches the maximum rotation angle, the cross pin 331 cooperates with the limiting part of the rotating part 311, so that the compression spring 34 is always in a compressed energy storage state. When the external force rotates the spiral sleeve, the cross pin 331 is disengaged from the limiting part of the rotating part 311, and the compression spring 34 releases the stored energy and pushes the transmission shaft 33 to move axially backward to achieve automatic return. When the transmission shaft 33 moves axially backward, it pushes the piston rod of the damping cylinder to retract inward, so that the rotation speed of the rotating sleeve 32 is limited by the axial movement speed of the transmission shaft 33, thereby achieving the effect of slowly closing the door.

[0035] The sleeve 31 includes a first sleeve 31a and a second sleeve 31b. A rotating portion 311 is provided on one end of the first sleeve 31a. The end of the rotating portion 311 away from the first sleeve 31a is connected to the second sleeve 31b. It should be understood that the compression spring 34 is provided in the second sleeve 31b, so that one end of the compression spring 34 acts on one end of the transmission shaft 33, and the other end abuts against the limit ring 37. The limit ring 37 is screwed into the second sleeve 31b, and the center of the limit ring 37 is provided with an external hexagonal hole If later debugging work is required, the closing speed can be adjusted by rotating the limit ring 37 with an Allen wrench; it should be understood that one end of the damper 35 abuts against the end of the transmission shaft 33 away from the compression spring 34, and the other end abuts against the damping adjustment member 39. The damping adjustment member 39 is screwed into the first sleeve 31a. The damping adjustment member 39 is rotated with an Allen wrench to adjust its front and rear position to adjust the damping buffering force of the damping cylinder, thereby adjusting the damping force of the damping mechanism when it moves relative to the transmission shaft 33.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring pre-installed structure of a damping buffer device, characterized in that: The invention comprises a first hinge (1) installed on a door frame and a second hinge (2) installed on a door body, wherein the first hinge (1) and the second hinge (2) are rotationally connected via a damping and buffering device (3), wherein a compression spring (34) is arranged inside the damping and buffering device (3), and the compression spring (34) provides compression energy storage when the first hinge (1) and the second hinge (2) rotate relative to each other; the invention is characterized in that: the compression spring (34) is sleeved on a spring pin (36), wherein one end of the spring pin (36) is provided with a stopper (361), and the other end is provided with an expansion part (362), and a limiting ring (37) is passed through the expansion part (362), so that one end of the compression spring (34) abuts against the stopper (361), and the other end abuts against the limiting ring (37), and an expansion member (38) is inserted into the expansion part (362).

2. The spring pre-installed structure of the damping buffer device according to claim 1, characterized in that: The diameter of the expansion member (38) is consistent with the inner diameter of the expansion portion (362).

3. The spring pre-installed structure of the damping buffer device according to claim 1, characterized in that: A hand-pulling portion (381) is provided at one end of the expansion member (38) away from the expansion portion (362).

4. The spring pre-installed structure of the damping buffer device according to claim 1, characterized in that: The damping and buffering device (3) further comprises a sleeve (31), a rotating sleeve (32), a transmission shaft (33) and a damper (35); the rotating sleeve (32) is rotatably arranged on the outer wall surface of the sleeve (31), and the rotating sleeve (32) drives the transmission shaft (33) in the sleeve (31) to move axially; and the two ends of the transmission shaft (33) are respectively in contact with a stopper (361) and the damper (35).

5. The spring pre-installed structure of the damping buffer device according to claim 4, characterized in that: A transverse pin (331) is radially penetrated on the transmission shaft (33); a rotating portion (311) for rotating the rotating sleeve (32) is provided on the sleeve (31); a spiral groove (312) is provided on the wall surface of the rotating portion (311); a long groove (321) is provided on the wall surface of the rotating sleeve (32) along the axial direction; the transverse pin (331) is slidably matched with the spiral groove (312) and the long groove (321); an end of the transverse pin (331) is slidably matched with the long groove (321), so that the transmission shaft (33) is driven to move axially when the rotating sleeve (32) rotates.

6. The spring pre-installed structure of the damping buffer device according to claim 5, characterized in that: The sleeve (31) comprises a first sleeve (31a) and a second sleeve (31b); the rotating portion (311) is provided on one end of the first sleeve (31a); and the end of the rotating portion (311) away from the first sleeve (31a) is connected to the second sleeve (31b).

7. The spring pre-installed structure of the damping buffer device according to claim 6, characterized in that: The compression spring (34) is arranged in the second sleeve (31b), so that one end of the compression spring (34) acts on one end of the transmission shaft (33), and the other end abuts against a limit ring (37), and the limit ring (37) is screwed into the second sleeve (31b).

8. The spring pre-installed structure of the damping buffer device according to claim 7, characterized in that: One end of the damper (35) abuts against one end of the transmission shaft (33) away from the compression spring (34), and the other end abuts against a damping adjustment member (39), and the damping adjustment member (39) is threaded into the first sleeve (31a).

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