CN218817870U - anti-falling device - Google Patents

Abstract

The utility model discloses an anti-falling device, which relates to the technical field of springs and comprises an outer spring, an inner spring and a mounting assembly. The tail end of the inner spring and the head end of the inner spring, the head end of the outer spring on the outer spring and the head end of the inner spring on the inner spring are all wound into four ring-shaped dead loops, and the inner spring can be embedded in the outer spring. An anti-falling assembly that prevents the inner spring from falling off from the outer spring is arranged between the outer spring head end on the outer spring and the inner spring head end on the inner spring. By embedding the inner spring into the outer spring, an arc-shaped composite spring with an embedded tail-end connection method is formed. Compared with a single spring, the arc-shaped composite spring has a better damping effect, and the arc-shaped composite spring is effective. The amount of compression is also large, the torsional stiffness is small, and the resonance frequency is low, so the ability to control torsional vibration and noise is strong.

Description

An anti-falling device

technical field

The utility model relates to the technical field of springs, in particular to an anti-falling device.

Background technique

The power transmission system of an automobile is a multi-degree-of-freedom torsional vibration system. The torsional vibration and the noise generated by the torsional vibration are an important aspect that affects the performance of the car. The dual-mass flywheel is a new configuration that appeared on the car in the late 1980s. . Compared with the single-mass flywheel, it has the advantages of avoiding idling resonance, vibration reduction, noise reduction and easy shifting. Dual-mass flywheels are increasingly used as a core component for reducing torsional vibrations in modern automotive powertrains. Since the dual-mass flywheel is an important part connected between the engine and the gearbox, the technical performance requirements for component products are particularly stringent. Whether domestic companies can provide dual-mass flywheel components with mature technology, technical performance that meets product design requirements, and low price plays a key role in whether domestic dual-mass flywheels can be truly localized. Otherwise, for the dual-mass flywheel produced by relying on imported components, the damping spring is the core component of the dual-mass flywheel, and its elastic characteristics directly affect the performance of the dual-mass flywheel.

Publication number CN 217234266 U discloses a dual-mass flywheel provided with a shock-absorbing spring seat, including a primary flywheel, a secondary flywheel and a torsional vibration damping mechanism. The outer side is provided with a shaft plate that is rotatably connected to the center of the first-stage flywheel shaft. The position of the first-stage flywheel near the edge of the flywheel is provided with a guide groove. . By setting the spring seat in the guide groove, and the position of the spring seat can be adjusted by the cooperation between the fastening bolt, the arc chute, the fixing nut and the compression spring, so that the two springs can be changed according to the elastic force of the shock absorbing spring. The distance between the spring seats makes the shock absorbing spring unnecessary to be replaced, which enables better shock absorption and improves the service life of the shock absorbing spring. But the damping spring in the above-mentioned patent is a single spring, and the effective compression amount of the single spring is small, so that the relative rotation angle between the primary and secondary flywheels is small. In addition, the torsional stiffness of the single spring is large and the resonance frequency is high. The ability of vibration and noise is weak.

Utility model content

In view of the problems existing in the above-mentioned existing anti-falling device, the utility model is proposed.

Therefore, the purpose of this utility model is to provide an anti-falling device, which solves the problem that the effective compression amount of the single spring is small, and the relative rotation angle between the primary and secondary flywheels is small, and the torsional stiffness of the single spring is large, and the resonance frequency is high. , so the ability to control torsional vibration and noise is weak.

In order to achieve the above object, the utility model provides the following technical solutions:

An anti-falling device, comprising an outer spring, an inner spring and a mounting assembly, the two ends of the outer spring are respectively the tail end of the outer spring and the head end of the outer spring, and the two ends of the inner spring are respectively the tail end of the inner spring and the inner spring end. The head end of the spring, the head end of the outer spring on the outer spring and the head end of the inner spring on the inner spring are all wound into four ring-shaped dead loops, the inner spring can be embedded in the outer spring, the An anti-falling component that prevents the inner spring from falling off from the outer spring is arranged between the head end of the outer spring on the outer spring and the head end of the inner spring on the inner spring. Between the head of the spring and the head of the inner spring on the inner spring.

Preferably, the falling-off preventing assembly includes an annular sleeve, and the outer wall of the annular sleeve is equidistantly provided with a plurality of primary connectors, and the inner wall of the annular sleeve is equidistantly provided with a plurality of secondary connectors.

Preferably, the primary connecting piece is used to fix the annular sleeve at the inner wall of the head end of the outer spring, and the secondary connecting piece is used to fix the annular sleeve at the outer wall of the head end of the inner spring.

Preferably, both the primary connecting piece and the secondary connecting piece are composed of an inclined plate and an interfering plate, the top of the inclined plate is fixed to the annular sleeve, and the bottom of the inclined plate is fixed to the top of the interfering plate.

It should be noted that the annular sleeve, the inclined plate, and the resisting plate are all made of the same metal material as the outer spring and the inner spring.

Preferably, the inclined plate on the first-level connecting piece and the inclined plate on the second-level connecting piece are arranged symmetrically with respect to the annular sleeve, and the inclined plate on the first-level connecting piece and the inclined plate on the second-level connecting piece are formed by the annular sleeve. The axis of symmetry is designed in the shape of "eight".

It should be noted that since the inclined plate on the first-level connecting piece and the inclined plate on the second-level connecting piece are designed in an “eight” shape with the ring sleeve as the axis of symmetry, it will be convenient to embed the inner spring into the ring sleeve, and also It is convenient to set the outer spring sleeve outside the annular sleeve.

Preferably, the installation assembly includes a base plate, and a disc is fixed on the top of the base plate, and two clamping plates are symmetrically fixed on the disc, and two clamping grooves are symmetrically opened on the bottom of the annular sleeve, and the clamping plates can be Embedded in the card slot.

It should be noted that the thickness of the clamping plate is equal to the thickness of the annular sleeve, so that when the clamping plate is stuck in the slot, the clamping plate will not affect the insertion of the inner spring into the annular sleeve, nor will it affect the fitting of the outer spring. out of the ring.

In the above-mentioned technical scheme, the technical effects and advantages provided by the utility model:

1. By embedding the inner spring into the outer spring, an arc-shaped combined spring with an embedded tail end connection method is formed. Compared with a single spring, the arc-shaped combined spring has a better shock absorption effect, and this arc-shaped combined spring The effective compression amount is also large, the torsional stiffness is small, and the resonance frequency is low, so the ability to control torsional vibration and noise is strong.

2. Through the setting of the installation components, the inner spring can be conveniently embedded in the annular sleeve, and then the outer spring can be sleeved outside the annular sleeve, so that the collision plates on the inner and outer walls of the annular sleeve are respectively pressed against the inner spring head on the inner spring end and the outer spring head on the outer spring, so that the outer spring and the inner spring are fixed, avoiding the falling off between the outer spring and the inner spring, not only the stability is good, but also the structure is very simple.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the structural representation of outer spring and inner spring that the utility model provides;

Fig. 2 is the structural representation of the mounting assembly provided by the utility model;

Fig. 3 is the disassembly structure schematic diagram of Fig. 2 provided by the utility model;

Fig. 4 is a schematic cross-sectional structure diagram of the annular sleeve provided by the present invention.

Explanation of reference signs:

1. Outer spring; 2. Inner spring; 3. Outer spring tail end; 4. Outer spring head end; 5. Inner spring tail end; 6. Inner spring head end; 7. Ring sleeve; 8. Primary connector; 9. Secondary connector; 10. Card slot; 11. Bottom plate; 12. Disc; 13. Clamping plate; 14. Inclined plate; 15. Interference plate.

Detailed ways

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.

The embodiment of the utility model discloses an anti-falling device.

The utility model provides an anti-falling device as shown in Figure 1-4, which includes an outer spring 1, an inner spring 2 and a mounting assembly, and the two ends of the outer spring 1 are respectively the outer spring tail end 3 and the outer spring head end 4, The two ends of the inner spring 2 are respectively the inner spring tail end 5 and the inner spring head end 6, and the outer spring head end 4 on the outer spring 1 and the inner spring head end 6 on the inner spring 2 are all wound into four turns Ring dead circle, the inner spring 2 can be embedded in the outer spring 1, and the outer spring head 4 on the outer spring 1 and the inner spring head 6 on the inner spring 2 are arranged to prevent the inner spring 2 from falling off from the outer spring 1 The anti-falling assembly, the installation assembly is used to install the anti-falling assembly between the outer spring head end 4 on the outer spring 1 and the inner spring head end 6 on the inner spring 2, the anti-falling assembly includes an annular sleeve 7, and the annular sleeve The outer wall of 7 is equidistantly provided with a plurality of primary connectors 8, and the inner wall of the annular sleeve 7 is equidistantly provided with a plurality of secondary connectors 9, the installation assembly includes a bottom plate 11, and the top of the bottom plate 11 is fixed with a disc 12, Two clamping plates 13 are symmetrically fixed on the disc 12 , and two clamping grooves 10 are symmetrically formed on the bottom of the ring sleeve 7 , and the clamping plates 13 can be embedded in the clamping grooves 10 .

As shown in Figure 1, by embedding the inner spring 2 into the outer spring 1, and fixing the heads of the outer spring 1 and the inner spring 2 together through the anti-loosening component, due to the embedding of the outer spring 1 and the inner spring 2 In this way, the tail ends of the outer spring 1 and inner spring 2 are connected in an arc-shaped combined spring. The arc-shaped combined spring has the characteristics of long arc and stable connection of the inner and outer springs, which can effectively help the inner spring 2 to work back and forth in the outer spring 1. When compressed, the head ends are firmly connected together and will not fall off. When the head ends of the outer spring 1 and inner spring 2 are fixed, the cross-sectional view of the joint of the tail ends of the outer spring 1 and inner spring 2 is shown in Figure 1 A in the.

In order to fix the inner spring head end 6 on the inner spring 2 and the outer spring head end 4 on the outer spring 1 together, as shown in Fig. 2-Fig. At the inner wall of the spring head end 4, the secondary connecting piece 9 is used to fix the annular sleeve 7 at the outer wall of the inner spring head end 6. Composition, it should be noted that the annular sleeve 7, the inclined plate 14, and the interference plate 15 are all made of the same metal material as the outer spring 1 and the inner spring 2, and the top of the inclined plate 14 is fixed to the annular sleeve 7, and the bottom of the inclined plate 14 Fixed with the top of the collision plate 15, the inclined plate 14 on the primary connector 8 and the inclined plate 14 on the secondary connector 9 are arranged symmetrically about the annular sleeve 7, and the inclined plate 14 on the primary connector 8 and the second The inclined plate 14 on the stage connector 9 is designed in the shape of "eight" with the annular sleeve 7 as the axis of symmetry.

During the specific operation, first align the clamping groove 10 on the annular sleeve 7 with the clamping plate 13 on the disc 12, then put down the annular sleeve 7 so that the clamping plate 13 is embedded in the clamping groove 10, and then insert the inner spring 2 Set to the annular sleeve 7, so that the outer wall of the inner spring head end 6 on the inner spring 2 and the collision plate 15 in the secondary connector 9 are pressed against each other, and then the outer spring 1 is penetrated so that the inner spring 2 is located in the outer spring 1, and then Move the outer spring 1 downwards so that the inner wall of the outer spring 1 is pressed against the contact plate 15 in the primary connector 8, that is, the outer spring 1 and the inner spring 2 are fixed, and then the outer spring 1 and the inner spring 2 are removed, and the ring The sleeve 7 is fixed between the outer spring head 4 on the outer spring 1 and the inner spring head 6 on the inner spring 2 .

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Undoubtedly, for those skilled in the art, without departing from the spirit and scope of the present utility model, various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (6)

1. The utility model provides an anti-drop device, includes outer spring (1), inner spring (2) and installation component, its characterized in that, the both ends of outer spring (1) are outer spring tail end (3) and outer spring head end (4) respectively, the both ends of inner spring (2) are inner spring tail end (5) and inner spring head end (6) respectively, outer spring head end (4) department on outer spring (1) and inner spring head end (6) department on inner spring (2) all wind into the annular of four rings and die the circle, inner spring (2) can inlay and establish in outer spring (1), set up the anti-drop component that prevents that inner spring (2) from droing in outer spring (1) between outer spring head end (4) on outer spring (1) and inner spring head end (6) on inner spring (2) between the installation component is used for installing outer spring head end (4) on outer spring (1) and inner spring (6) on inner spring (2).

2. A dropout prevention means according to claim 1, wherein the dropout prevention means comprises an annular sleeve (7), and the outer wall of the annular sleeve (7) is provided with a plurality of primary connecting members (8) at equal intervals, and the inner wall of the annular sleeve (7) is provided with a plurality of secondary connecting members (9) at equal intervals.

3. A dropout prevention means in accordance with claim 2, wherein the primary connector (8) is adapted to fix the annular sleeve (7) at the inner wall of the outer spring head end (4), and the secondary connector (9) is adapted to fix the annular sleeve (7) at the outer wall of the inner spring head end (6).

4. An anti-drop device according to claim 2, characterized in that the primary connecting piece (8) and the secondary connecting piece (9) are both composed of an inclined plate (14) and an interference plate (15), the top of the inclined plate (14) is fixed with the annular sleeve (7), and the bottom of the inclined plate (14) is fixed with the top of the interference plate (15).

5. The fall-off prevention device according to claim 4, wherein the inclined plate (14) on the primary connecting piece (8) and the inclined plate (14) on the secondary connecting piece (9) are symmetrically arranged about the annular sleeve (7), and the inclined plate (14) on the primary connecting piece (8) and the inclined plate (14) on the secondary connecting piece (9) are designed in a shape of a Chinese character 'ba' with the annular sleeve (7) as a symmetry axis.

6. The anti-falling device according to claim 2, wherein the mounting assembly comprises a bottom plate (11), a disc (12) is fixed on the top of the bottom plate (11), two clamping plates (13) are symmetrically fixed on the disc (12), two clamping grooves (10) are symmetrically formed in the bottom of the annular sleeve (7), and the clamping plates (13) can be embedded into the clamping grooves (10).

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