CN209921408U - Shrapnel type shear block crumpling device - Google Patents

Abstract

The utility model relates to a shell fragment formula shear block device that contracts that bursts, which comprises a bracket, the plastic sheath, spring shim, the metal covering, an opening has on the support, this open-ended side is the face of opening for confining surface and another side, the opening top is arranged in to the upper end of plastic sheath, the lower extreme of plastic sheath passes the opening and arranges the opening in, the spring shim sleeve is established in the outside of metal sheath, the upper end of metal sheath and the lower extreme block setting of plastic sheath simultaneously, the metal sheath supports spring shim at the lower terminal surface of support, the shear block is arranged in the top of plastic sheath and is run through the setting from top to bottom through a bolt. The utility model has the advantages of it is following: the control error is small, and the collapse stability of the tubular column at the initial stage is facilitated.

Description

Shrapnel type shear block crumpling device

The technical field is as follows:

the utility model belongs to the technical field of the auto steering, concretely relates to shell fragment formula shear block device that contracts bursts.

Background art:

with the increase of the number of automobiles, traffic accidents on roads also increase, and more people pay special attention to the fact that the automobiles are protected to the maximum degree in the collision process. When the automobile collides, the steering wheel and the steering column of the automobile can cause great harm to the driver. The energy when the automobile receives frontal collision makes the automobile front portion take place plastic deformation, and the steering column that is located the automobile front portion moves to driver chest direction promptly to the steering spindle backward under the effect of collision force, makes the driver receive the injury. When an automobile collides, a driver can also be influenced by inertia to move towards a steering wheel, one part of the movement energy of the driver is absorbed by an automobile safety restraint device, an air bag and the like, and the other part of the movement energy is directly transmitted to the steering wheel and a steering column system, so that the driver collides with the steering wheel and the steering column, and personal injury is caused. In order to enhance the anti-collision ability of the automobile and ensure the safety of the driver, a collapsing device is generally installed on the steering column of the automobile.

The traditional automobile steering column generally adopts a cast aluminum shear block to be connected with a metal support through POM injection molding, when the column begins to collapse, the shear block can be separated from the support firstly, and the POM of injection molding breaks and the mutual friction between the shear block and the support provides collapse initial force. Often, due to the injection molding process parameters, the part size and other reasons, the initial collapse force is very unstable, and the collapse force of a larger tolerance zone is usually required; however, the cast aluminum shear block is connected with the metal support by plastic, and the shear block is usually also used as a mounting point of the tubular column, so that the overall rigidity performance of the tubular column is reduced to a certain extent, the control error is large, and the collapse stability of the tubular column at the initial stage is not facilitated; and the existing shear block damages other parts when collapsing.

The utility model has the following contents:

the utility model aims at overcoming the above insufficiency, providing a shrapnel formula clipper ulcerate device that contracts.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a shell fragment formula shear block device that contracts that bursts, which comprises a bracket, the plastic sheath, the spring gasket, the metal covering, an opening has on the support, this open-ended side is the closing surface and another side is the face of opening, the opening top is arranged in to the upper end of plastic sheath, the lower extreme of plastic sheath passes the opening and arranges the opening in and set up, the outside at the metal sheath is established to the spring gasket cover, the upper end of metal sheath sets up with the lower extreme block of plastic sheath simultaneously, the metal sheath supports the spring gasket at the lower terminal surface of support, the shear block is arranged in the top of plastic sheath and is run through the setting from top to bottom through a bolt.

The utility model discloses a further improvement lies in: the plastic sleeve and the metal sleeve are of T-shaped structures, the plastic sleeve comprises a first horizontal portion and a first vertical portion, the upper end face of the support is arranged in the first horizontal portion, the first vertical portion is arranged in an opening of the support, the metal sleeve comprises a second horizontal portion and a second vertical portion, the second vertical portion is clamped in the first vertical portion, the second horizontal portion is arranged on the lower end face of the support, and the spring gasket is arranged between the lower end face of the support and the upper end face of the second horizontal portion.

The utility model discloses a further improvement lies in: the baffle plates are respectively arranged at the positions of two sides of the first vertical part below the first horizontal part, and the baffle plates are arranged corresponding to the two sides of the opening.

The utility model discloses a further improvement lies in: the opening is in a U-shaped structure.

The utility model discloses a further improvement lies in: the outer terminal surface of the vertical portion of second is equipped with inside sunken recess, has the stopper that sets up with the recess block on the inside wall of first vertical portion, has a bolt hole that holds the bolt and imbed from top to bottom on the vertical portion of second simultaneously.

The utility model discloses a further improvement lies in: the spring gasket is of a wedge-shaped structure, a large opening end of the spring gasket is in contact with the lower end face of the support, and a small opening end of the spring gasket is in contact with the upper end face of the second horizontal portion.

The utility model discloses a further improvement lies in: the spring gasket is provided with a plurality of through holes which are uniformly arranged along the extending direction of the outer side end face of the spring gasket.

The utility model discloses a further improvement lies in: the plastic sleeve is an injection molding one-step forming structure.

The utility model discloses a further improvement lies in: the metal sleeve is a powder metallurgy part.

Compared with the prior art, the utility model has the following advantage:

the utility model discloses a realize being connected through the spring shim between shear block and the support, after steering column received the impact of power, the shear block started to burst at first and contracts, and shear block and bolt are static relatively, and the support receives spring shim's sliding friction and breaks away from the shear block from the opening part of support, does not cause the damage to any structure, and this sliding friction power accessible bolt moment of torsion is adjusted, and control error is little, does benefit to the stability that bursts of tubular column at the beginning stage and contracts. For whole vehicle enterprises with the same installation torque requirement, the standardized design of the tubular column product collapsing and shearing structure can be realized, and the number of parts is reduced.

Description of the drawings:

fig. 1 is a schematic view of the connection between the shrinkage device and the shear block of the present invention.

Fig. 2 is a schematic structural view of the shrinkage device of the elastic sheet type shear block of the present invention.

Fig. 3 is a schematic exploded view of fig. 2.

Reference numbers in the figures: 1-support, 2-plastic sleeve, 3-spring gasket, 4-metal sleeve, 5-opening, 6-shear block, 7-bolt, 8-through hole, 21-first horizontal part, 22-first vertical part, 221-limiting block, 41-second horizontal part, 42-second vertical part, 421-groove and 422-bolt hole.

The specific implementation mode is as follows:

in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

Fig. 1 to fig. 3 show the utility model relates to an embodiment of shrapnel type shear block device that bursts, which comprises a bracket 1, plastic sheath 2, spring gasket 3, metal covering 4, an opening 5 has on the support 1, a side of this opening 5 is the closing surface and another side is the opening face, it is further, opening 5 is U type column structure, opening 5 top is arranged in to the upper end of plastic sheath 2, the lower extreme of plastic sheath 2 passes opening 5 and arranges in the opening 5 and sets up, 3 covers of spring gasket establish in the outside of metal covering 4, the upper end of metal covering 4 sets up with the lower extreme block of plastic sheath 2 simultaneously, metal covering 4 supports spring gasket 3 at the lower terminal surface of support 1, shear block 6 arranges in the top of plastic sheath 2 and runs through the setting from top to bottom through a bolt 7.

In this embodiment, the plastic sleeve 2 and the metal sleeve 4 are both T-shaped structures, the plastic sleeve 2 includes a first horizontal portion 21 and a first vertical portion 22, the first horizontal portion 21 is disposed on the upper end surface of the bracket 1, the first vertical portion 22 is disposed in the opening 5 of the bracket 1, the metal sleeve 4 includes a second horizontal portion 41 and a second vertical portion 42, the second vertical portion 42 is engaged with the first vertical portion 41, the second horizontal portion 41 is disposed on the lower end surface of the bracket 1, and the spring washer 3 is disposed between the lower end surface of the bracket 1 and the upper end surface of the second horizontal portion 41.

In this embodiment, the baffle plates 8 are respectively disposed below the first horizontal portion 21 and at two sides of the first vertical portion 22, and the baffle plates 8 are disposed corresponding to two sides of the opening 5, so as to prevent the shear block 6 from pressing the opening 5 due to sliding friction of the spring washer 3 when collapsing, and ensure that the shear block 6 is separated from the bracket 1 along the direction of the opening.

In this embodiment, the outer terminal surface of second vertical portion 42 is equipped with inside sunken recess 421, has the stopper 221 who sets up with recess 421 block on the inside wall of first vertical portion 22, has a bolt hole 422 that holds bolt 7 and imbed from top to bottom on the second vertical portion 42 simultaneously, is convenient for realize the installation cooperation of metal covering 4 and plastic sheath 2, and bolt 7 runs through bolt hole 422 simultaneously and realizes the stability of being connected of shear block 6 and the device that contracts of bursting.

In this embodiment, the spring washer 3 is in a wedge-shaped structure, the large opening end of the spring washer 3 contacts with the lower end surface of the bracket 1, and the small opening end of the spring washer 3 contacts with the upper end surface of the second horizontal portion 41.

In the present embodiment, the spring washer 3 has a plurality of through holes 9 uniformly arranged along the extending direction of the outer end surface of the spring washer 3, so that the structure is further reduced in weight.

In this embodiment, the plastic sheath 2 is an injection molding one-step molding structure, and has the advantages of high production speed and high efficiency, and the automatic production of the plastic sheath 2 can be realized.

In the embodiment, the metal sleeve 4 is a powder metallurgy part, so that the production loss is less, the cost is reduced, and the oxidation resistance is high.

The working principle is as follows: the shear block 6 is connected with the support 1 through the spring gasket 3, after the steering column is impacted by force, the shear block 6 starts to collapse firstly, the shear block 6 and the bolt 7 are relatively static, the support 1 is separated from the shear block 6 from the opening of the support 1 due to sliding friction of the spring gasket 3, no damage is caused to any structure, the sliding friction force can be adjusted through the torque of the bolt 7, the control error is small, and the collapse stability of the column at the beginning stage is facilitated. For whole vehicle enterprises with the same installation torque requirement, the standardized design of the tubular column product collapsing and shearing structure can be realized, and the number of parts is reduced.

The disclosures of all parts of the present invention are within the scope of the common general knowledge of those skilled in the art. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a shell fragment formula shears piece device that contracts which characterized in that: including support, plastic sheath, spring gasket, metal covering, an opening has on the support, and this open-ended side is the face of opening for confining surface and another side, the opening top is arranged in to the upper end of plastic sheath, and the lower extreme of plastic sheath passes the opening and arranges the opening in and sets up, the spring gasket cover is established in the outside of metal covering, and the upper end of metal covering and the lower extreme block setting of plastic sheath simultaneously, the metal sheath supports the spring gasket at the lower terminal surface of support, the top of plastic sheath is arranged in to the shear block and runs through the setting from top to bottom through a bolt.

2. The shrapnel shear block crumple device of claim 1, wherein: the plastic sleeve and the metal sleeve are of T-shaped structures, the plastic sleeve comprises a first horizontal portion and a first vertical portion, the upper end face of the support is arranged in the first horizontal portion, the first vertical portion is arranged in an opening of the support, the metal sleeve comprises a second horizontal portion and a second vertical portion, the second vertical portion is clamped in the first vertical portion, the lower end face of the support is arranged in the second horizontal portion, and the spring gasket is arranged between the lower end face of the support and the upper end face of the second horizontal portion.

3. The shrapnel shear block crumple device of claim 2, wherein: the baffle plates are respectively arranged at the positions of two sides of the first vertical part below the first horizontal part, and the baffle plates are arranged corresponding to the two sides of the opening.

4. The apparatus of claim 3, wherein: the opening is of a U-shaped structure.

5. The shrapnel shear block crumple device of claim 2, wherein: the outer terminal surface of the vertical portion of second is equipped with inside sunken recess, have the stopper that sets up with the recess block on the inside wall of first vertical portion, have a bolt hole that holds the bolt and imbed from top to bottom on the vertical portion of second simultaneously.

6. The shrapnel shear block crumple device of claim 2, wherein: the spring gasket is of a wedge-shaped structure, a large opening end of the spring gasket is in contact with the lower end face of the support, and a small opening end of the spring gasket is in contact with the upper end face of the second horizontal portion.

7. The shrapnel shear block crumple device of claim 6, wherein: the spring gasket is provided with a plurality of through holes which are uniformly arranged along the extending direction of the outer side end face of the spring gasket.

8. The apparatus of claim 1 or 2, wherein: the plastic sleeve is of an injection molding one-step forming structure.

9. The apparatus of claim 1 or 2, wherein: the metal sleeve is a powder metallurgy part.

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