CN217124610U - Tailor-welded high-tone toothed plate energy absorption structure - Google Patents

Abstract

The utility model relates to a tailor-welded high-speed adjusting pinion rack energy-absorbing structure, the cushion back tube is rotationally installed on the cushion curb plate, pinion rack and cushion back tube fixed connection and be connected with motor drive, the pinion rack includes base plate and rack, rack tailor-welded fixed connection is on the base plate, the base plate includes body, strake and turn-ups, the turn-ups outwards stretches out from the body side direction and supports in order to form the rack, the rack passes through the welding seam difference fixed connection on strake and turn-ups. According to the utility model discloses a tailor-welded high modulation pinion rack energy-absorbing structure, rack and base plate tailor-welded are connected and are formed the pinion rack, and the fine blanking processing of rack part can obtain higher intensity, prevents that the rack from peeling off the inefficacy, and the turn-ups plays the supporting role to the rack in normal use, takes place plastic deformation when receiving the impact and plays the effect of energy-absorbing. Compare in the riveting of the rack among the prior art and energy-absorbing deformation, the utility model discloses a tailor-welded high tone pinion rack energy-absorbing structure has reduced part quantity, structure complexity and manufacturing cost.

Description

Tailor-welded high-tone toothed plate energy absorption structure

Technical Field

The utility model relates to a car seat, more specifically relate to a tailor welding height transfers pinion rack energy-absorbing structure.

Background

In order to adjust the height of the seat cushion, the car seat is generally provided with a height adjusting structure, which is used particularly for adjusting the height of the rear tube of the seat cushion. The safety performance of the car seat is increasingly required, and the need to reduce the impact of the occupant in the collision is also increasing. The energy-absorbing design in the present high tone structure often increases new energy-absorbing part and effectively reduces the energy impact that the passenger received when externally striking, adopts each part of riveted mode connection simultaneously, and the structure is comparatively complicated, leads to higher manufacturing cost. For example, CN107107786B discloses a high-speed adjusting toothed plate energy-absorbing structure for a motor vehicle seat, in which a base plate, an energy-absorbing deformation member and a toothed plate portion are three independent parts, and are connected by rivets, and the energy-absorbing structure realizes functions through plastic deformation of the energy-absorbing deformation member when in effect. For another example, in the high-speed adjustable toothed plate energy absorption mechanism disclosed in DE102018207637B4, the base plate and the toothed plate are two independent parts and are connected by rivets, the energy absorption structure is integrated on the toothed plate, and the energy absorption effect can be improved by adding an energy absorption patch.

SUMMERY OF THE UTILITY MODEL

In order to solve the energy-absorbing design in the high tone structure among the above-mentioned prior art often increase the high scheduling problem with high costs that new energy-absorbing part leads to, the utility model provides a tailor-welding high tone pinion rack energy-absorbing structure.

According to the utility model discloses a tailor welding height adjusting toothed plate energy-absorbing structure, it includes the pinion rack, the cushion back tube, motor and cushion curb plate, wherein, the cushion back tube is rotationally installed on the cushion curb plate, pinion rack and cushion back tube fixed connection and be connected with motor drive, the pinion rack includes base plate and rack, rack tailor welding fixed connection is on the base plate, the base plate includes body, strake and turn-ups, the turn-ups outwards stretches out from the body side direction and supports in order to form the rack, the rack passes through welding seam difference fixed connection on strake and turn-ups.

Preferably the end of the edge strip is formed as a free end and spaced from the body.

Preferably, the body and the cuff define an energy absorbing slot to provide a deformation space.

Preferably, the free end of the edge strip projects into the energy absorption groove.

Preferably, the opposite ends of the edge strip are integrally formed with the body.

Preferably, one end of the edge strip is formed as a deformation zone.

Preferably, the pinion rack is located the inboard of cushion curb plate, and the motor is located the outside of cushion curb plate and its gear passes cushion curb plate and pinion rack meshing.

Preferably, the tailor-welded high tone plate energy-absorbing structure further comprises a cover plate, nuts, a bracket and bolts, wherein the cover plate and the bracket are respectively located on two opposite sides of the cushion side plate, and the bolts penetrating through the bracket, the cushion side plate and the cover plate are fastened through the nuts so as to be used for mounting the motor on the cushion side plate.

Preferably, the body and the edge strip define mounting slots for bolts to pass through to limit the stroke of height adjustment.

Preferably, the toothed plate and the cushion rear tube are welded and fixed.

According to the utility model discloses a tailor-welded high tone pinion rack energy-absorbing structure, rack and base plate tailor-welded are connected and are formed the pinion rack, and the fine blanking processing of rack part can obtain higher intensity, prevents that the rack from peeling off inefficacy, and the turn-ups plays the supporting role to the rack in normal use, takes place plastic deformation when receiving the impact and plays the effect of energy-absorbing. Compare in the riveting of the rack among the prior art and energy-absorbing deformation, the utility model discloses a tailor-welded high tone pinion rack energy-absorbing structure has reduced part quantity, structure complexity and manufacturing cost. The design of the energy absorption groove reduces the strength of the corresponding position, the rack and the connecting part can deform along the direction of the energy absorption groove when being impacted by the outside, and the energy absorption effect is achieved in the plastic deformation process of the position of the energy absorption groove. The deformation direction of energy-absorbing trench position is inwards shrink, and the back gear of deformation reduces with pinion rack centre-to-centre spacing, prevents that the gear from deviating from, increases the security.

Drawings

Fig. 1 illustrates an installation environment of a tailor welded high tone plate energy absorbing structure according to a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the tailor welded high tone plate energy absorbing structure of FIG. 1;

figure 3 is a schematic structural view of the tooth plate of figure 2;

figure 4 is a first view showing a deformation of the tooth plate of figure 2;

figure 5 is a second view illustrating a deformation of the tooth plate of figure 2;

figure 6 is a third view illustrating a deformation of the tooth plate of figure 2;

figure 7 is a fourth view illustrating a deformation of the tooth plate of figure 2;

figure 8 is a schematic structural view of a toothed plate according to another preferred embodiment of the present invention;

figure 9 is a schematic structural view of a toothed plate according to yet another preferred embodiment of the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, according to the utility model discloses a tailor-welded height adjusting pinion rack energy-absorbing structure of a preferred embodiment includes pinion rack 1, cushion back tube 2, motor 3 and cushion curb plate 4, wherein, cushion back tube 2 rotationally installs on cushion curb plate 4, pinion rack 1 with cushion back tube 2 fixed connection (for example welding) and with motor 3 drive connection to drive pinion rack 1 through motor 3, drive cushion back tube 2 is in order to adjust its height then. In this embodiment, the toothed plate 1 is located inside the cushion side plate 4, and the motor 3 is located outside the cushion side plate 4 and its gear passes through the cushion side plate 4 to mesh with the toothed plate 1.

As shown in fig. 2, the tailor welded high tone plate energy absorbing structure according to the present embodiment further includes a cover plate 5, a nut 6, a bracket 7, and a bolt 8, wherein the cover plate 5 and the bracket 7 are respectively located at opposite sides of the cushion side plate 4, and the bolt 8 passing through the bracket 7, the cushion side plate 4, and the cover plate 5 is fastened by the nut 6 for mounting the motor 3 on the cushion side plate 4.

As shown in fig. 3, the toothed plate 1 includes a base plate 11 and a rack 12, wherein the rack 12 is fixedly connected to the base plate 11 by a welding seam 13. The rack 12 and the base plate 11 are connected in a tailor welding mode to form the toothed plate 1, the rack 12 is partially subjected to fine punching, the tailor welding mode can obtain higher strength, and the rack 12 is prevented from being stripped and failed.

The base plate 11 includes a body 111 and an edge bar 112, wherein the body 111 and the edge bar 112 define a mounting groove 113 for passing the bolt 8 (see fig. 1), an end of the edge bar 112 is formed as a free end and spaced apart from the body 111, and the rack 12 is fixedly attached to the edge bar 112 by a weld 13. In fact, the extended length of the mounting groove 113 may be used to limit the stroke of the height adjustment, i.e. the stroke is limited by the abutment of the bolt 8 against both ends of the mounting groove 113. In addition, the base plate 11 further includes a flange 114 extending laterally outward from the body 111 to support the rack 12, and the rack 12 is fixedly connected to the flange 114 by the weld 13. In particular, the body 111 and the cuff 114 define an energy absorbing groove 115 to provide a deformation space, the energy absorbing groove 115 being in communication with the mounting groove 113 in this embodiment. The design of the turned-up edge 114 positioned below the rack 12 ensures that the turned-up edge 114 supports the rack 12 in the normal use process, and makes up for the strength reduction caused by the energy absorption groove 115. When the shock is applied, the flanging 114 is plastically deformed, so as to absorb the energy. The design of the energy absorption groove 115 reduces the strength of the corresponding position, the rack and the connecting part can deform along the direction of the energy absorption groove when being impacted externally, and the energy absorption function is realized in the plastic deformation process of the position of the energy absorption groove.

When the toothed plate is impacted, referring to fig. 1, the toothed plate 1 is deformed by the impact force transmitted from the gear of the motor 3, as shown in fig. 4-6, so that the flange 114 deforms downwards to absorb energy, the energy absorption groove 115 is a stress concentration position, and the two sides of the groove collapse inwards to absorb energy, thereby playing a role in absorbing energy and buffering. The deformation direction of the energy absorption groove position is inwards contracted, the center distance between the deformed gear and the toothed plate is reduced, the gear is prevented from falling off, and the safety is improved. In this way, after impact, the rack 12 of the toothed plate 1 and the gear of the motor 3 remain engaged, preventing failure, as shown in figure 7.

It should be understood that the specific arrangement of the edge strips 112 in the above embodiments is merely exemplary and not limiting, and provides a greater energy-absorbing deformation, which is more effective in preventing damage to the remaining functional components. As shown in fig. 8, the opposite ends of the edge strip 112' of another embodiment are integrally formed with the body 111, thereby providing high strength. Accordingly, end 112a of strake 112' is formed as a deformation zone that provides a smaller amount of deformation under impact conditions relative to energy absorption slots 115 of the above-described embodiments. As shown in FIG. 9, the free end of the edge strip 112 "of the other embodiment extends into the energy absorption groove 115" and contacts the body 111 "after being deformed to a certain extent in a collision state, thereby generating a multi-stage energy absorption effect.

In a word, the utility model discloses a tailor-welded high tone plate energy-absorbing structure prevents through controllable energy-absorbing mode that the experiment is inefficacy, has increased the security performance, compares in like product and has reduced part quantity, and structure complexity and manufacturing cost have reached same energy-absorbing safe effect.

What has been described above is only the preferred embodiment of the present invention, not for limiting the scope of the present invention, but various changes can be made to the above-mentioned embodiment of the present invention. All the simple and equivalent changes and modifications made according to the claims and the content of the specification of the present invention fall within the scope of the claims of the present invention. The present invention is not described in detail in the conventional technical content.

Claims (10)

1. The utility model provides a piece together and weld high modulation pinion rack energy-absorbing structure, a serial communication port, this piece together and weld high modulation pinion rack energy-absorbing structure includes the pinion rack, the cushion back tube, motor and cushion curb plate, wherein, the cushion back tube is rotationally installed on the cushion curb plate, pinion rack and cushion back tube fixed connection and be connected with motor drive, the pinion rack includes base plate and rack, rack piece welds fixed connection on the base plate, the base plate includes the body, strake and turn-ups, the turn-ups outwards stretches out in order to form the support to the rack from the body side direction, the rack passes through welding seam difference fixed connection at strake and turn-ups.

2. The tailor welded high tone plate energy absorbing structure of claim 1, wherein the end of the strake is formed as a free end and spaced apart from the body.

3. The tailor welded high tone plate energy absorbing structure of claim 2, wherein the body and the cuff define an energy absorbing slot to provide a deformation space.

4. Tailor welded high tone plate energy absorbing structure according to claim 3, wherein the free end of the edge strip extends into the energy absorbing groove.

5. The tailor welded high tone plate energy absorbing structure of claim 1, wherein opposite ends of the strake are integrally formed with the body.

6. Tailor welded high tone plate energy absorbing structure according to claim 5, wherein one end of the edge strip is formed as a deformation zone.

7. The tailor welded high tone plate energy absorbing structure of claim 1, wherein the toothed plate is located inside the cushion side plate, the motor is located outside the cushion side plate and its gear passes through the cushion side plate to mesh with the toothed plate.

8. The tailor welded high tone plate energy absorbing structure of claim 7, further comprising a cover plate, a nut, a bracket and a bolt, wherein the cover plate and the bracket are located on opposite sides of the cushion side plate, respectively, the bolt passing through the bracket, the cushion side plate and the cover plate being fastened by the nut for mounting the motor on the cushion side plate.

9. The tailor welded high tone plate energy absorbing structure of claim 8, wherein the body and the strake define mounting slots for bolts to pass through to limit a height adjustment stroke.

10. The tailor welded high tone plate energy absorbing structure of claim 1, wherein the tooth plate is welded to the cushion back tube.

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