Damping rotating shaft mechanism

Abstract

The utility model relates to the technical field of damping rotating shafts, and discloses a damping rotating shaft mechanism which comprises a shell body, a shaft body is arranged on the shell body, a clamping spring is arranged in the middle of the shaft body in a sleeved mode, a cover is arranged on the side edge of the shell body, and a plurality of damping elastic pieces are arranged in the shell body. By means of the assembly capable of achieving different torque of clockwise rotation and anticlockwise rotation, different torque can be provided in the clockwise rotation direction and the anticlockwise rotation direction in the rotation process, different requirements of users for force are met, and the assembly is particularly suitable for the fields of automobile seat headrests and small table plates. And the forward turning operation force is light, and meanwhile, the support with relatively large force can be provided backwards, so that different forward and backward moments are needed, and the use of a user is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to damping rotation shaft technical field, concretely is a kind of damping rotation shaft mechanism. BACKGROUND

[0002] In daily application, two parts with rotational relationship, when one of the rotating parts needs to be paused at any rotation angle, and manually push one of the rotating parts, damping feeling is a common application requirement.

[0003] To solve the demand of comfort in car, the armrest, auxiliary instrument panel and the like of car interior can be angle-adjustable, can realize turnover, folding at different angles and multiple states, provide hovering state, meet the demand of reliable support core rotating assembly of human comfort, the core rotating assembly needs to be rotated by output shaft to achieve the demand of 0-360 ° folding, and the core mechanism of folding has a rotating shaft, when rotating shaft, 0-360 ° can be in a relatively stable damping force by the friction between torsion unit and shaft, more smooth and have good service life.

[0004] And the damping angle of the existing damping rotation shaft mechanism needs to reach 0-360 ° or more folding angle, and needs to have certain supporting effect on cover plate or connecting structure, but it is difficult to provide different torque for forward rotation and reverse rotation in the same rotation process, so it cannot meet the demand of force and hand feeling of product, and there is certain inconvenience in use. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of damping rotation shaft mechanism, solve the demand of the damping angle of the existing damping rotation shaft mechanism to reach 0-360 ° or more folding angle, and need to have certain supporting effect on cover plate or connecting structure, but it is difficult to provide different torque for forward rotation and reverse rotation in the same rotation process, so it cannot meet the demand of force and hand feeling of product, and there is certain inconvenience in use.

[0006] The utility model provides following technical scheme: a kind of damping rotation shaft mechanism, including shell body, the shell body is provided with shaft body, the middle part of the shaft body is equipped with snap spring, the side of the shell body is provided with lid, the shell body is provided with several damping spring leafs in;

[0007] The top of the shell body is equipped with top opening, the bottom of the side of the shell body is equipped with shell recess, the side of the shell recess is provided with shell lug, the middle part of the shell body is equipped with inner circle, the shell body is provided with shell inner plate in;

[0008] The end of the shaft body is provided with a knurled surface, the side of the knurled surface is provided with a shaft body, the end of the shaft body is provided with an end face thread, and a shaft slot is arranged between the shaft body and the shaft body.

[0009] Preferably, the top of the damping elastic sheet is provided with an upper matching end, the side of the upper matching end is provided with an upper fixed end, the inner wall of the damping elastic sheet is provided with an inner recess structure, the bottom side of the upper fixed end is provided with a lower fixed end, and two outer recesses are symmetrically arranged on the two sides of the bottom end of the damping elastic sheet.

[0010] Preferably, the bottom end of the damping elastic sheet is provided with a bottom matching end, the side of the damping elastic sheet is provided with a lower end opening, the side of the upper fixed end is provided with a deformation matching part, the middle part of the damping elastic sheet is provided with an inner hole, and the inner side of the top end of the damping elastic sheet is provided with an inner recess.

[0011] Preferably, the inner wall of the clamping spring is provided with an inner circular surface.

[0012] Preferably, the middle part of the cover is provided with an opening.

[0013] The cover can be more conveniently sleeved on the shaft body.

[0014] Preferably, the side of the clamping spring is in an open shape.

[0015] The clamping spring can better clamping and limiting at the shaft slot.

[0016] Compared with the prior art, the damping shaft mechanism has the following beneficial effects:

[0017] (1) The assembly capable of realizing different clockwise rotation and counterclockwise rotation torques can provide different torques in clockwise rotation and counterclockwise rotation directions during rotation, meet different torque requirements of users, especially in the fields of headrests and small table plates of automobile seats, needs lighter operation force for forward turning, and can provide relatively larger support force for backward turning, so that different torques are needed for forward and backward turning, and the use of users is more convenient. DETAILED DESCRIPTION

[0018] Figure 1 is the assembly perspective exploded view of the utility model;

[0019] Figure 2 is the assembly perspective view of the utility model;

[0020] Figure 3 is the explosion view of the utility model;

[0021] Figure 4 is a shell body perspective view of the utility model;

[0022] Figure 5 is a cover perspective view of the utility model;

[0023] Figure 6 is a shaft body perspective view of the utility model;

[0024] Figure 7 is a damping spring perspective view of the utility model;

[0025] Figure 8 is a spring perspective view of the utility model;

[0026] Figure 9 is a damping spring working state view of the utility model.

[0027] In the drawing: 100, shell body;100-1, top opening;100-2, shell groove;100-3, shell protrusion;100-4, inner circle;100-5, shell inner plate;

[0028] 200, shaft body;200-1, knurled surface;200-2, shaft body;200-3, end face thread;200-4, shaft slot;

[0029] 300, cover;

[0030] 400, damping spring;400-1, upper matching end;400-2, upper fixed end;400-3, inner recess structure;400-4, lower fixed end;400-5, outer groove;400-6, bottom matching end;400-7, lower end opening;400-8, deformation matching part;400-9, inner hole;400-10, inner groove;

[0031] 500, spring;500-1, inner circle face. DETAILED DESCRIPTION

[0032] Please refer to Figures 1-4 ,

[0033] Embodiment one: a damping shaft mechanism, including shell body 100, shell body 100 is provided with shaft body 200, the middle part of shaft body 200 is provided with spring 500, the side of shell body 100 is provided with cover 300, and shell body 100 is provided with several damping springs 400.

[0034] The top end of shell body 100 is provided with top opening 100-1, the bottom end of the side of shell body 100 is provided with shell groove 100-2, the side of shell groove 100-2 is provided with shell protrusion 100-3, the middle part of shell body 100 is provided with inner circle 100-4, and shell body 100 is provided with shell inner plate 100-5.

[0035] The end of the shaft body 200 is provided with a knurled surface 200-1, the side of the knurled surface 200-1 is provided with a shaft body 200-2, the end of the shaft body 200-2 is provided with an end face thread 200-3, and the shaft body 200-2 and the shaft body 200 are provided with a shaft groove 200-4.

[0036] The top of the damping spring 400 is provided with an upper matching end 400-1, the side of the upper matching end 400-1 is provided with an upper fixed end 400-2, the inner wall of the damping spring 400 is provided with an inner recess structure 400-3, the bottom side of the upper fixed end 400-2 is provided with a lower fixed end 400-4, two outer recesses 400-5 are symmetrically arranged on the two sides of the bottom end of the damping spring 400, the bottom end of the damping spring 400 is provided with a bottom matching end 400-6, the side of the damping spring 400 is provided with a lower end opening 400-7, the side of the upper fixed end 400-2 is provided with a deformation matching part 400-8, the middle part of the damping spring 400 is provided with an inner hole 400-9, and the inner side of the top end of the damping spring 400 is provided with an inner recess 400-10.

[0037] Embodiment two: The difference between this embodiment and embodiment one is that the inner wall of the snap spring 500 is provided with an inner circular surface 500-1.

[0038] The inner wall of the snap spring 500 is provided with an inner circular surface 500-1.

[0039] Embodiment three: The difference between this embodiment and embodiment one is that the middle part of the cover 300 is provided with an opening.

[0040] So that the cover 300 is more convenient to be sleeved on the shaft body 200.

[0041] Embodiment four: The difference between this embodiment and embodiment one is that the side of the snap spring 500 is in an open shape.

[0042] So that the snap spring 500 better clamps and limits at the shaft groove 200-4.

[0043] In this embodiment, the damping angle of the existing damping shaft mechanism needs to reach 0-360° or more folding angles, and needs to have a certain supporting effect on the cover plate or the connecting structure, but it is difficult to provide different torques for forward rotation and reverse rotation in the same rotation process, so it cannot meet the product's demand for force and feel, and there is a certain inconvenience in use.

[0044] In summary, in the specific implementation, when the outer circle of the shaft body 200 has a relative movement trend through the damping spring sheet 400 composed of multiple parts, under the action of pressure, friction will be generated, when the rotating force of the shaft body 200 is greater than the friction, the shaft body 200 and the shell body 100 produce relative rotation, when the rotating force of the shaft body 200 is less than the friction, the shaft body 200 and the shell body 100 remain relatively static, when the outer circle of the shaft body 200 has a relative movement trend through the damping spring sheet 400 composed of multiple parts, under the action of pressure, friction will be generated, when the rotating force of the shaft body 200 is greater than the friction, the shaft body 200 and the shell body 100 produce relative rotation, when the rotating force of the shaft body 200 is less than the friction, the shaft body 200 and the shell body 100 remain relatively static.

[0045] As for the change of torque, the left and right structures of the damping spring sheet 400 are different, one side structure is a fixed and supported structure, the end faces of the upper and lower ends of the structure are matched with the shell, the lower end is a strong match, and the upper end is an auxiliary match, the other side structure is an elastic structure, the upper end of the structure is connected with the structure of the fixed end spring sheet, and the lower half of the other end is in a disconnected state, when stressed, the released end deforms under stress, forming a spring structure, providing stable counter pressure for the overall structure, when the shaft body 200 has a rotation trend inside the damping spring sheet 400, the static friction is provided by the fixed end and the elastic end, when the rotating force of the shaft body 200 is greater than the friction, the shaft body 200 starts to rotate, since the damping spring sheet 400 is composed of two different structures, when the rotation trend of the shaft body 200 turns to the fixed structure side, the friction on the shaft body 200 increases, when the rotation trend of the shaft body 200 turns to the changeable end, the friction is smaller, so that different force conditions are formed for left and right rotation, and the design intention is realized.

[0046] As above, the damping spring sheet 400 left and right structures are different, but the same proportion, the damping spring sheet 400 is installed and the number of pieces is the same, the left and right torque is not uniform, which just offsets, and becomes the same left and right torque.

[0047] The cooperation between the damping spring sheet 400 and the shell body 100, the outer groove 400-5 and the bottom cooperation end 400-6 on the damping spring sheet 400 cooperate with the shell protrusion 100-3 on the shell body 100, and are fixed with each other, the shaft body 200 is fixed on the shell body 100 and the cover 300, the fixation is through the knurl surface 200-1 of the shaft body 200 and the inner hole size provided by the customer demand to fix and stop rotation.

[0048] The shaft body 200 plays a role of generating friction force with the damping spring 400, providing reliable torque output for the system, and connecting the shell and cooperating with external components. The lower half of the shaft body 200-2 is matched with the inner circle 100-4 at the upper end of the shell body 100. The end face of the shaft body 200 is designed as a round cap type, which can prevent the spring from falling off when it is twisted and guide during installation. The shaft body 200-2 is matched with the inner hole 400-9 at the upper end of the damping spring 400. Since the damping spring 400 is composed of one or more springs, it has a certain pressure on the shaft body 200. When the shaft body 200 and the damping spring 400 have relative motion, friction will be generated under the action of pressure. When the rotating force of the shaft body 200 is greater than the friction, the shaft body 200 and the damping spring 400 rotate relatively.

[0049] When the rotating force of the shaft body 200 is less than the friction, the shaft body 200 and the damping spring 400 remain relatively stationary. The shaft body 200-2 at the middle part passes through the inner circle 100-4 of the shell, which plays a role of fixing the shaft body 200. The end face thread 200-3 of the shaft body 200 is designed for easy installation and removal. The knurled surface 200-1 at the lower end of the shaft body 200 is designed to form a non-slip grip on its surface, which makes it easier to fix the shaft body 200 during operation and ensures its stability. The structure is simple and compact, easy to assemble, and can meet the assembly needs of various products, greatly saving installation time. In order to make the shaft body 200 more stable and improve the use strength, hardening material is used, which greatly improves the working life and stability.

[0050] The two fixed ends of the damping spring 400 are composed of the upper and lower protruding parts, the upper matching end 400-1 and the bottom matching end 400-6. The two fixed ends use their protruding structure and the opening 100-1 at the top of the shell to form mutual cooperation, so that the damping spring 400 is fixed with the shell body 100 and remains relatively stationary.

[0051] The variable structure of the damping spring 400 is composed of the deformation matching part 400-8, which is composed of the right half circle from the upper end protruding part upper matching end 400-1 to the lower end opening 400-7. The main function of the lower end opening 400-7 is to cause elastic deformation of the deformation matching part 400-8 under the action of lateral external force, and to provide a stable pressure for the shaft body 200 through elastic deformation.

[0052] The upper fixed end 400-2 and the lower fixed end 400-4, and the inner side of the deformation fitting part 400-8 are directly in contact with the shaft body 200, when the shaft body 200 has a movement tendency with the damping spring sheet 400, the upper fixed end 400-2 and the inner recess structure 400-3 of the damping spring sheet 400, and the deformation fitting part 400-8 and the shaft body 200 generate mutual friction.

[0053] The inner recess 400-10 is located between the upper fixed end 400-2 and the deformation fitting part 400-8, and the inner recess structure 400-3 is located between the upper fixed end 400-2 and the lower fixed end 400-4, their main functions are: 1: increase the elastic deformation amount; 2: lubricant groove, used for storing grease, increasing the lubricating effect between the spring sheet and the shaft, reducing wear, and increasing the service life.

[0054] The cooperation between the shell body 100, the cover 300 and the shaft body 200 and the damping spring sheet 400 is that first the shaft body 200-2 of the shaft body 200 passes through the cover 300, then the damping spring sheet 400 is installed to be in interference fit with the outer diameter of the shaft body 200 through the inner hole 400-9, attached to the shaft body 200, then grease is applied to keep lubrication, the shell body 100 is installed to be fixed in the shell through the top opening 100-1, the shell protrusion 100-3, the upper cooperation end 400-1 and the outer recess 400-5, and the bottom cooperation end 400-6 are cooperated to fix it in the shell, after installation, it is determined whether the cover 300 is attached to the inner plate 100-5 of the shell, finally the inner circular surface 500-1 of the snap spring is installed to be clamped into the shaft slot 200-4, then the axial gap is eliminated through the two side end faces, preventing the gap from shaking to play a limiting role, the materials that can be used include extruded aluminum, die-cast zinc alloy, aluminum alloy, cast iron, etc., the overall assembly has an attractive appearance, the shell meets the assembly structure, has high strength, and good use stability.

[0055] The snap spring 500 mainly consists of two parts, the inner circular surface 500-1 is mainly used for clamping the inner circular surface into the shaft slot 200-4, then the axial gap is eliminated through the two side end faces, preventing the gap from shaking to play a limiting role, the front and rear limiting prevents the damping spring sheet 400 from moving back and forth in the inner circle to play a positioning role, at the same time, it also blocks foreign matter from entering the shell body 100, at the same time, the cooperation gap between the shell body 100 and the cover 300 is eliminated, also playing a cooperation role, the rotation force of the double rotating shafts can be the same on both sides or different on both sides, and the shell body 100 can be extruded aluminum, die-cast zinc alloy, aluminum alloy, cast iron, etc.

Claims

1. A damped rotary shaft mechanism characterized by: Including shell body (100), be provided with shaft body (200) on the shell body (100), the middle part of the shaft body (200) is sleeved with the snap spring (500), the side of the shell body (100) is provided with cover (300), a plurality of damping spring (400) is provided in the shell body (100); The top end of the shell body (100) is provided with a top opening (100-1), the bottom end of the side of the shell body (100) is provided with a shell groove (100-2), the side of the shell groove (100-2) is provided with a shell protrusion (100-3), the middle part of the shell body (100) is provided with an inner circle (100-4), and the shell body (100) is provided with a shell inner plate (100-5); The end of the shaft body (200) is provided with a knurled surface (200-1), the side of the knurled surface (200-1) is provided with a shaft body (200-2), the end of the shaft body (200-2) is provided with an end face thread (200-3), and the shaft groove (200-4) is provided between the shaft body (200-2) and the shaft body (200).

2. A damped pivot mechanism according to claim 1, wherein: The top of the damping spring (400) is provided with an upper matching end (400-1), the side of the upper matching end (400-1) is provided with an upper fixed end (400-2), the inner wall of the damping spring (400) is provided with an inner recess structure (400-3), the bottom side of the upper fixed end (400-2) is provided with a lower fixed end (400-4), and two outer recesses (400-5) are symmetrically provided on both sides of the bottom end of the damping spring (400).

3. A damped pivot mechanism according to claim 2, wherein: The bottom end of the damping spring (400) is provided with a bottom matching end (400-6), the side of the damping spring (400) is provided with a lower end opening (400-7), the side of the upper fixed end (400-2) is provided with a deformation matching part (400-8), the middle part of the damping spring (400) is provided with an inner hole (400-9), and the inner side of the top end of the damping spring (400) is provided with an inner recess (400-10).

4. A damped pivot mechanism according to claim 3, wherein: The inner wall of the snap spring (500) is provided with an inner circular surface (500-1).

5. A damped pivot mechanism according to claim 4, wherein: The middle part of the cover (300) is provided with an opening.

6. A damped pivot mechanism according to claim 5, wherein: The side of the snap spring (500) is open.

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