Damping buffer device capable of increasing assembling speed

Abstract

The utility model discloses a damping buffer device capable of accelerating assembly speed, which comprises a sleeve, a transmission shaft sleeve, a shaft core, a damper and a spring, the transmission shaft sleeve, the shaft core, the damper and the spring are arranged in the sleeve, one end of the transmission shaft sleeve is provided with a limiting part, a movable cavity for axial movement of the shaft core part is arranged in the limiting part, and the wall surface of the movable cavity is provided with a through hole. Spiral grooves are symmetrically formed in the wall face of the front end of the shaft core, the spiral grooves penetrate through the shaft core in the radial direction, and the two ends of a sliding pin penetrate through the spiral grooves to extend to the through hole correspondingly, so that the transmission shaft sleeve drives the shaft core to axially move in the movable cavity when rotating, and the damper and the spring abut against the two ends of the shaft core correspondingly; compared with the conventional steel ball rolling structure for the axial movement of the spiral shaft, the sliding pin sliding structure is used for the axial movement of the spiral shaft, and compared with the conventional steel ball rolling structure, the sliding pin sliding structure has the advantages that the installation difficulty is reduced, the installation time is shorter, and the assembly efficiency is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers, in particular to a damping buffer device capable of accelerating assembly speed. 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 disclosed 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; and a spiral damping and buffering device with announcement number CN218294297U. Both are damping and buffering devices developed to meet the application of various scenarios; but both have a problem. The spiral rotating shaft structure of both uses a rolling structure of steel balls and spiral grooves. During the actual assembly process of the damping and buffering device, this structure has a small steel ball and high assembly difficulty, and the current assembly efficiency of workers is not ideal; therefore, it is necessary to make further improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a damping and buffering device which can accelerate the assembly speed, and 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 damping and buffering device that can speed up the assembly speed, comprising a sleeve and a transmission sleeve, a shaft core, a damper, and a spring arranged in the sleeve, a limiting portion being arranged at one end of the transmission sleeve, an active cavity for axial movement of the shaft core portion being opened in the limiting portion, a through hole being arranged on the wall surface of the active cavity, and spiral grooves being symmetrically arranged on the front end wall surface of the shaft core, the spiral grooves radially penetrate the shaft core, and extend to the through hole through the spiral grooves at both ends of the sliding pin, so that the shaft core is driven to move axially in the active cavity when the transmission sleeve rotates, and the damper and spring are respectively abutted against the two ends of the shaft core.

[0006] In a further preferred embodiment, a guide groove is radially penetrated on the shaft core, the guide groove extends axially, a guide pin is axially slidably arranged in the guide groove, limiting holes are symmetrically arranged on the wall surface of the sleeve, and the two ends of the guide pin extend respectively and are inserted into the two limiting holes. By changing the guide structure from the internal tooth group structure of the shaft core to the guide pin, this structure not only has higher production efficiency in actual application, but also is more convenient to install.

[0007] In a further preferred embodiment, the sleeve includes a first sleeve and a second sleeve, the limiting portion of the transmission sleeve is rotatably arranged in the second sleeve, a connecting portion is arranged at one end of the transmission sleeve away from the limiting portion, the connecting portion is connected to the first sleeve, limiting holes are symmetrically arranged on the wall surface of the second sleeve, and the shaft core moves linearly in the second sleeve through a guide pin; in this structure, the connecting portion and the damper of the transmission sleeve are installed in the first sleeve, and the limiting portion, the shaft core and the spring of the transmission sleeve are all installed in the second sleeve, so as to realize the split sleeve installation, which is convenient for assembly and later maintenance and disassembly.

[0008] In a further preferred embodiment, the connecting portion is a flat key structure, and a key groove is provided on the inner side of the end of the first sleeve close to the second sleeve, and the connecting portion is inserted into the key groove; in this structure, the first sleeve and the second sleeve adopt a flat key structure as a connection method to facilitate the connection between the two.

[0009] In a further preferred embodiment, the damper is arranged in the first sleeve, and the extending end of the damper passes through the connecting part and abuts against the end of the shaft core; through this structure, when the damping buffer device is in the closing process, the shaft core is axially moved toward the damper due to the elastic potential energy of the spring, and the extending end of the damper provides buffering damping for the shaft core, offsetting part of the spring energy storage, causing the shaft core to slide slowly, thereby achieving buffering.

[0010] In a further preferred embodiment, a damping adjustment member is provided at one end of the damper away from the shaft core, and the damping adjustment member is threadedly connected to the end of the first sleeve and abuts against the damper; through this structure, the damping force can be adjusted according to different moment of inertia requirements, so that the damping buffer device can be applied to a variety of environmental occasions.

[0011] In a further preferred embodiment, the spring is arranged in the second sleeve, and one end of the spring abuts against the shaft core; through this structure, when the damping buffer device is driven, the shaft core moves axially toward the spring, and energy is stored by compression of the spring to achieve automatic closing.

[0012] In a further preferred embodiment, a speed adjusting member is provided at one end of the spring away from the shaft core, and the speed adjusting member is screwed to the end of the second sleeve and abuts against the spring; through this structure, the upper or lower limit of the accumulated torque of the spring can be adjusted to adjust the self-closing speed of the shaft core to meet the needs of various occasions.

[0013] In a further preferred embodiment, spline patterns are provided on the outer wall surfaces of the first sleeve and the second sleeve. Through this structure, spline patterns are processed at different positions on the outer wall surfaces of the first sleeve and the second sleeve according to different usage scenarios to enhance the connection friction between the first sleeve, the second sleeve and the external connection unit.

[0014] In a further preferred embodiment, a plane bearing is further arranged in the second sleeve, and the plane bearing is sleeved on the connecting portion, so that one end face of the plane bearing abuts against the inner end face of the second sleeve, and the other end face abuts against the step surface between the connecting portion and the limiting portion; through this structure, it is ensured that the transmission sleeve can rotate smoothly in the second sleeve, thereby reducing the noise of the damping buffer device during the opening and closing process.

[0015] Compared with the prior art, the main beneficial effects of the utility model are: compared with the previous use of a steel ball rolling structure for the axial movement of the spiral rotor, the utility model is changed to a sliding pin sliding structure for the axial movement of the spiral rotor, wherein a spiral groove is provided on the wall surface of the shaft core, and the two ends of the sliding pin respectively pass through the spiral groove and extend into the through hole on the wall surface of the shaft core; when the damping buffer device is opened and closed, the transmission sleeve drives the sliding pin to move along the spiral groove, and the shaft core moves axially in the active cavity under the limiting action between the sliding pin and the spiral groove, and moves back and forth relative to the transmission sleeve as a whole, thereby realizing the axial movement of the spiral rotor; compared with the existing steel ball rolling structure, this sliding pin sliding structure reduces the installation difficulty, shortens the installation time, and speeds up the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a subjective three-dimensional schematic diagram of the utility model.

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0018] Figure 3 It is an explosion diagram of the utility model.

[0019] Figure 4 This is a schematic diagram of the first installation process of the utility model.

[0020] Figure 5 This is a schematic diagram of the second installation process of the utility model.

[0021] Figure 6 This is a schematic diagram of the utility model in use.

[0022] Figure 7 It is a schematic diagram of the installation state of the utility model and the hinge.

[0023] In the figure: a first sleeve 100, a second sleeve 200, a limiting hole 201, a transmission sleeve 300, a limiting portion 301, a connecting portion 302, a movable cavity 303, a through hole 304, a shaft core 400, a spiral groove 401, a sliding pin 402, a guide groove 403, a guide pin 404, a damper 500, a spring 600, a damping adjustment member 700, a speed adjustment member 800, and a plane bearing 900. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] like Figures 1 to 5 A damping and buffering device capable of accelerating assembly speed is shown, comprising a sleeve and a transmission sleeve 300, a shaft core 400, a damper 500, and a spring 600 arranged in the sleeve;

[0029] The sleeve includes a first sleeve 100 and a second sleeve 200. The limiting portion 301 of the transmission sleeve 300 is rotatably disposed in the second sleeve 200. The other end of the transmission sleeve 300 is provided with a connecting portion 302, which is plugged into the first sleeve 100.

[0030] The limiting part 301 is provided with an active cavity 303 for the axial movement of the shaft core 400. The wall of the active cavity 303 is provided with a through hole 304. The front end wall of the shaft core 400 is symmetrically provided with a spiral groove 401. The spiral groove 401 penetrates the shaft core 400 in the radial direction, and the two ends of the sliding pin 402 pass through the spiral groove 401 and extend to the through hole 304, so that the shaft core 400 is driven to move axially in the active cavity 303 when the transmission sleeve 300 rotates; to be precise, when the damping buffer device is opened and closed, the transmission sleeve 300 00 drives the sliding pin 402 to move along the spiral groove 401, and under the limiting action between the sliding pin 402 and the spiral groove 401, the shaft core 400 moves axially in the movable cavity 303, and moves back and forth as a whole relative to the transmission sleeve 300, thereby realizing the axial movement of the spiral shaft. Compared with the previous use of a steel ball rolling structure for the axial movement of the spiral shaft, the sliding pin 402 sliding structure is used for the axial movement of the spiral shaft. In actual application, this structure shortens the installation time of the assembly workers and improves the assembly efficiency.

[0031] Specifically, a guide groove 401 is radially penetrated on the shaft core 400, and the guide groove 401 extends axially. A guide pin 402 is axially slidably arranged in the guide groove 401. The wall surface of the second sleeve 200 is symmetrically provided with limit holes 201. The two ends of the guide pin 402 extend and are respectively inserted into the two limit holes 201. The shaft core 400 cooperates with the guide pins 402 inserted into the wall surface of the second sleeve 200 at both ends, so that when the transmission sleeve 300 rotates, the shaft core 400 is driven to move axially in the second sleeve 200. Compared with the traditional shaft core 400, the tooth group structure is easier to produce, has higher production efficiency, and is more convenient to install, thereby reducing production costs;

[0032] The damper 500 and the spring 600 are respectively abutted against the two ends of the shaft core 400. On the one hand, the shaft core 400 is continuously compressed by the spring 600 during the opening process of the damping buffer device to accumulate torque energy, so that the shaft core 400 has a self-closing function of returning. On the other hand, during the closing process of the damping buffer device, the damper 500 offsets part of the energy storage of the spring 600, so that the shaft core 400 slides slowly to achieve a buffering function. To be precise, the spring 600 is arranged in the second sleeve 200, and one end of the spring 600 is abutted against the shaft core 400. When the damping buffer device is opened, the shaft core 400 moves toward the spring 600. 0 direction, the spring 600 is continuously compressed by the driving force of the shaft core 400 and accumulates torque energy, so that the shaft core 400 has a self-closing function of returning, the damper 500 is arranged in the first sleeve 100, and the extended end of the damper 500 passes through the connecting part 302 of the transmission sleeve 300 and abuts against the shaft core 400. Through this structure, when the damping buffer device is in the closing process, the shaft core 400 moves axially toward the damper 500, and the extended end of the damper 500 provides buffering damping for the shaft core 400, offsetting part of the spring energy storage, and causing the shaft core 400 to slide slowly, thereby achieving buffering.

[0033] Specifically, the connecting portion 302 is a flat key structure, and a key slot is provided on the inner side of the end of the first sleeve 100 close to the second sleeve 200, and the connecting portion 302 is inserted into the key slot. Using the flat key structure as a connection method is more convenient for connecting the first sleeve 100 and the second sleeve 200.

[0034] Specifically, a damping adjustment member 700 is provided at one end of the damper 500 away from the shaft core 400. The damping adjustment member 700 is screwed to the end of the first sleeve 100 and abuts against the damper 500. Through this structure, the damping force can be adjusted according to different moment of inertia requirements, so that the damping buffer device can be applied to a variety of environmental occasions.

[0035] Specifically, a speed adjusting member 800 is provided at one end of the spring 600 away from the shaft core 400. The speed adjusting member 800 is screwed to the end of the second sleeve 200 and abuts against the spring 600. The speed adjusting member 800 is twisted by a tool to adjust the upper or lower limit of the accumulated torque of the spring 600, thereby adjusting the self-closing speed of the shaft core 400 to meet the needs of various occasions.

[0036] Specifically, a spline pattern is provided on the outer wall surface of the first sleeve 100 and the second sleeve 200 or on one of the sleeves. The spline pattern is processed on the outer wall surface of the first sleeve 100 and the second sleeve 200 according to different usage scenarios to enhance the connection friction between the first sleeve 100, the second sleeve 200 and the external connection unit.

[0037] Specifically, a plane bearing 900 is also provided in the second sleeve 200, and the plane bearing 900 is sleeved on the connecting portion 302, so that one end face of the plane bearing 900 abuts against the inner end face of the second sleeve 200, and the other end face abuts against the step surface between the connecting portion 302 and the limiting portion 301. Through this structure, it is ensured that the transmission sleeve 300 can rotate smoothly in the second sleeve 200, thereby reducing the noise of the damping buffer device during the opening and closing process.

[0038] This application is mainly used for hinges, which are mainly used for the movable connection between doors and windows and door frames or window frames. Figure 6-7 The hinge in this embodiment consists of a left hinge piece and a right hinge piece that can rotate coaxially relative to each other, wherein the upper and lower ends of one side of the left hinge piece are respectively provided with an upper sleeve and a lower sleeve, and the middle sleeve is provided in the middle of one side of the right hinge piece, and the upper sleeve, the lower sleeve and the middle sleeve are all coaxially sleeved on the damping buffer device provided in the present application. To be precise, the middle sleeve is fixed with the spline pattern provided on the outer wall of the first sleeve 100, and the lower sleeve is fixed with the spline pattern provided on the outer wall of the first sleeve 100.

[0039] Among them, in actual application, two sliding bearings are provided on the damping buffer device, and the two sliding bearings are arranged between the upper sleeve and the middle sleeve, and between the lower sleeve and the middle sleeve to ensure the smooth rotation of the left hinge piece and the right hinge piece.

[0040] In a preferred embodiment, an upper end cover is installed in the upper end portion of the upper sleeve, and a lower end cover is installed in the lower end portion of the lower sleeve. The upper end cover and the lower end cover are respectively fixed in the upper sleeve and the lower sleeve by snap-fitting. Through holes are provided in the centers of the upper end cover and the lower end cover corresponding to the adjustment ports of the damping adjustment member 700 and the speed adjustment member 800, respectively, to facilitate personnel to perform adjustment work.

[0041] 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 damping and buffering device capable of accelerating assembly speed, characterized in that: The invention comprises a sleeve, a transmission shaft sleeve (300), a shaft core (400), a damper (500) and a spring (600) arranged in the sleeve. A limiting portion (301) is arranged at one end of the transmission shaft sleeve (300). An active cavity (303) for axial movement of part of the shaft core (400) is provided in the limiting portion (301). A through hole (304) is arranged on the wall surface of the active cavity (303). Spiral grooves (401) are symmetrically arranged on the front end wall surface of the shaft core (400). The spiral grooves (401) penetrate the shaft core (400) in the radial direction, and extend to the through hole (304) through the two ends of a sliding pin (402) passing through the spiral grooves (401) respectively, so that when the transmission shaft sleeve (300) rotates, the shaft core (400) is driven to move axially in the active cavity (303). The damper (500) and the spring (600) are respectively abutted against the two ends of the shaft core (400).

2. A damping and buffering device capable of accelerating assembly speed according to claim 1, characterized in that: A guide groove (403) is radially penetrated on the shaft core (400), and the guide groove (403) extends axially. A guide pin (404) is axially slidably arranged in the guide groove (403). Limiting holes (201) are symmetrically arranged on the wall surface of the sleeve, and two ends of the guide pin (404) respectively extend and are inserted into the two limiting holes (201).

3. A damping and buffering device capable of accelerating assembly speed according to claim 2, characterized in that: The sleeve comprises a first sleeve (100) and a second sleeve (200); a limiting portion (301) of the transmission sleeve (300) is rotatably arranged in the second sleeve (200); a connecting portion (302) is arranged at one end of the transmission sleeve (300) away from the limiting portion (301); the connecting portion (302) is connected to the first sleeve (100); limiting holes (201) are symmetrically arranged on the wall surface of the second sleeve (200); and the shaft core (400) moves linearly in the second sleeve (200) via a guide pin (404).

4. A damping and buffering device capable of accelerating assembly speed according to claim 3, characterized in that: The connecting portion (302) is a flat key structure, and a key groove is provided on the inner side of the end of the first sleeve (100) close to the second sleeve (200), and the connecting portion (302) is inserted into the key groove.

5. A damping and buffering device capable of accelerating assembly speed according to claim 3, characterized in that: The damper (500) is disposed in the first sleeve (100), and the protruding end of the damper (500) passes through the connecting portion (302) and abuts against the end of the shaft core (400).

6. A damping and buffering device capable of accelerating assembly speed according to claim 5, characterized in that: A damping adjustment member (700) is provided at one end of the damper (500) away from the shaft core (400); the damping adjustment member (700) is threadedly connected to the end of the first sleeve (100) and abuts against the damper (500).

7. A damping and buffering device capable of accelerating assembly speed according to claim 3, characterized in that: The spring (600) is disposed in the second sleeve (200), and one end of the spring (600) is in contact with the shaft core (400).

8. A damping and buffering device capable of accelerating assembly speed according to claim 7, characterized in that: A speed adjusting member (800) is provided at one end of the spring (600) away from the shaft core (400); the speed adjusting member (800) is threadedly connected to the end of the second sleeve (200) and abuts against the spring (600).

9. A damping and buffering device capable of accelerating assembly speed according to claim 3, characterized in that: Spline patterns are provided on the outer wall surfaces of the first sleeve (100) and the second sleeve (200).

10. A damping and buffering device capable of accelerating assembly speed according to claim 3, characterized in that: A plane bearing (900) is also provided in the second sleeve (200). The plane bearing (900) is sleeved on the connecting portion (302), so that one end surface of the plane bearing (900) abuts against the inner end surface of the second sleeve (200), and the other end surface abuts against the step surface between the connecting portion (302) and the limiting portion (301).

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