Seat table plate with stepless adjustment
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to a seat table plate with stepless adjustment.
Background
With the improvement of society and economic level of people, most families are equipped with automobiles for convenience of traveling, and meanwhile, the requirement of people on the comfort of the automobiles is gradually improved. In order to meet the requirement of people on comfort, a small table plate capable of rotating is arranged at the back of the front row automobile seat, so that the rear row passengers can place articles conveniently. The small table plate is internally provided with an adjusting mechanism which can rotate and be horizontally fixed, and the adjusting mechanism is divided into step adjustment and stepless adjustment. In the prior art, the stepless adjusting mechanism has complex structure, more parts and complex processing and manufacturing.
Disclosure of Invention
The invention aims to provide the seat table plate with the stepless adjustment, which is simple in structure and can effectively reduce the difficulty of processing and manufacturing.
Therefore, the technical scheme adopted by the invention is as follows: a seat table plate with stepless adjustment comprises a stepless adjustment mechanism and an unlocking mechanism, wherein the stepless adjustment mechanism is arranged below the rear end of the table plate and used for fixing the angle of the table plate;
the stepless adjusting mechanism comprises a shell body, rollers, a body outer cover and an unlocking arm, wherein the shell body is fixedly arranged with the table plate, the body outer cover is buckled at the left side of the shell body, a stepped hole is arranged in the shell body, the large end of the stepped hole is arranged at the left end of the shell body, a fixed seat is arranged in the stepped hole, one end of the fixed seat is provided with a circular boss, the outer diameter of the circular boss is larger than the diameter of the small end of the stepped hole, at least three rollers are arranged between the circular boss and the large end of the stepped hole, a notch matched with the rollers is arranged on the circular boss, a locking hole is arranged at the upper end of the shell body, the locking hole is positioned at the inner side of the large end of the stepped hole and adopts an arc hole which is uniformly transited from large to small, a locking pin is arranged in the locking hole, and the outer diameter of the locking pin is between, one end of the unlocking arm is fixedly connected with the locking pin, the front upper end of the shell body is also provided with a support arm extending outwards, the middle part of the unlocking arm is fixed on the support arm through a pin shaft, and the unlocking structure is arranged at the other end of the unlocking arm;
when the table plate rotates under the action of external force, the shell body is driven to rotate, the roller rotates around the fixed seat, and meanwhile, the locking hole rotates, so that the fit between the roller and the locking pin is changed from clearance fit to interference fit, and locking is realized; when the other end of the unlocking arm is rotated, the locking pin can be moved from the small end to the large end of the locking hole, so that unlocking is realized.
Preferably, the seat armrest further comprises a thrust pin, a mounting hole for inserting the connecting shaft is formed in the fixing seat along the axis, a first slot and a second slot which correspond to each other up and down are formed in the position, close to the end face, of the fixing seat, the second slot is communicated with the mounting hole, the thrust pin is inserted into the first slot and the second slot, one end of the connecting shaft is fixedly arranged on the seat, a groove is formed in the other end of the connecting shaft, and when the connecting shaft is inserted into the mounting hole, the thrust pin just falls into the groove, so that the seat armrest is mounted on the seat.
Preferably, the other end of the connecting shaft is a square shaft, the mounting hole corresponding to the inserting mounting is a square hole, an inclined plane is arranged on the end face of the square shaft, and the inclined plane and the groove are both arranged below the square shaft.
Further preferably, the release mechanism includes pull rod and switch, the front end below of table is provided with supplies the switch gliding spout from beginning to end, the one end of pull rod is colluded at the rear end middle part of switch, and the other end colludes on the other end of unblock arm, the interval is provided with return spring about the rear end of switch, return spring's the other end sets up on the table, when pushing forward the switch, drives the pull rod and pulls the unblock arm to make the locking round pin remove to the main aspects by the tip in locking hole and realize the unblock, under return spring's effect, switch and pull rod return.
It is further preferred that the angle between two of said rollers near the upper end is between 125 ° and 155 °, the remaining rollers being uniformly disposed within the reflex angle.
Further preferably, the body enclosing cover evenly is provided with at least three back-off, the position department that corresponds the back-off on the shell body is provided with the breach.
More preferably, the notch is a semicircular notch.
Preferably, the unlocking arm is in a V shape, and one end of the unlocking arm is forked and then fixedly connected with the left end and the right end of the locking pin.
The invention has the beneficial effects that: the roller is arranged on the shell body, the rotation of the shell body is realized through the roller, but the fixed seat does not rotate, the locking hole and the locking pin which are in a circular arc shape from large to small are also arranged on the shell body, when the shell body rotates to a certain angle, the locking function is realized through the matching of the locking hole and the locking pin, the unlocking arm is arranged on the locking pin, the shell body can be unlocked, the number of integrally arranged parts is small, and the structure is simple; only two surfaces matched with the roller are required to be subjected to finish machining, and the machining difficulty is low; when the body enclosing cover is provided with the working of plastics, can effectively reduce the weight and the cost of whole seat table.
Drawings
Fig. 1 is a rear view of the present invention.
Fig. 2 is a cross-sectional view a-a of fig. 1.
Fig. 3 is an exploded view of the unlocking mechanism.
Fig. 4 is a structural schematic of the unlocking mechanism in fig. 1.
Fig. 5 is a schematic view of the unlocking mechanism of the present invention mounted on the connecting shaft.
Fig. 6 is a sectional view of B-B in fig. 5.
Fig. 7 is a schematic view of the unlocking mechanism of the present invention mounted on the connecting shaft.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 7, a seat table with stepless adjustment comprises a stepless adjustment mechanism and an unlocking mechanism, wherein the stepless adjustment mechanism is arranged below the rear end of the table 12 and used for fixing the angle of the table 12, and the unlocking mechanism is arranged below the front end of the table 12 and can unlock the stepless adjustment mechanism so that the table 12 can rotate.
The specific structure of the stepless adjusting mechanism is as follows: including housing body 1, roller 2, body enclosing cover 3 and unblock arm 6, housing body 1 sets up with table 12 is fixed, 3 locks of body enclosing cover are in housing body 1's left side, be provided with shoulder hole 1a in housing body 1, the main aspects setting of shoulder hole 1a is at housing body 1's left end, be provided with fixing base 4 in the shoulder hole 1a, the one end of fixing base 4 is provided with circular boss 4a, for preventing that circular boss 4a from deviating from the tip of shoulder hole 1a, circular boss 4 a's external diameter is greater than the diameter of shoulder hole 1a tip.
Be provided with three roller 2 at least between circular boss 4a and the shoulder hole 1a main aspects, be provided with on the circular boss 4a with roller 2 assorted scarce groove a, the upper end of shell body 1 is provided with locking hole 1b, locking hole 1b is located the inboard of shoulder hole 1a main aspects, and adopt the circular arc hole of evenly transiting from big to small, be provided with locking pin 5 in the locking hole 1b, the external diameter of locking pin 5 is between locking hole 1b main aspects diameter and tip diameter, the one end and the locking pin 5 of unblock arm 6 are fixed continuous, the preceding upper end of shell body 1 still is provided with outside support arm 1c that stretches out, the middle part of unblock arm 6 is fixed on support arm 1c through round pin axle 7, unlocking structure sets up the other end at unblock arm 6.
When table 12 rotated under the exogenic action, driven shell body 1 rotated, roller 2 rotated round fixing base 4, and locking hole 1b rotated simultaneously, made its cooperation with locking round pin 5 become interference fit by clearance fit, realized locking. When the other end of the unlocking arm 6 is rotated, the locking pin 5 can be moved from the small end to the large end of the locking hole 1b, thereby unlocking.
Set up the mounting hole 4b that is used for cartridge connecting axle 9 along the axis on fixing base 4, fixing base 4 is provided with the first scarce groove 4c and the second that correspond from top to bottom near the position department of terminal surface and lacks groove 4d, and the second lacks groove 4d and mounting hole 4b intercommunication, thrust pin 8 cartridge is in first scarce groove 4c and the second lacks groove 4d, the one end of connecting axle 9 is fixed to be set up on the seat, be provided with recess 9a on the other end, when connecting axle 9 inserts mounting hole 4b, thrust pin 8 just falls in recess 9a for the seat handrail is installed on the seat. The installation structure of the seat armrest is simple, excessive parts do not need to be arranged on the seat, and the modularization of the whole seat armrest is facilitated.
In order to make the thrust pin 8 contact the recess 9a more, i.e. to get stuck more tightly, the other end of the connecting shaft 9 is configured as a square shaft, and its corresponding mounting hole 4b is a square hole. In order to facilitate the insertion of the connecting shaft 9 into the mounting hole 4b, an inclined surface 9b is arranged on the end surface of the square shaft, and the inclined surface 9b and the groove 9a are both arranged below the square shaft.
The unlocking mechanism specifically comprises a pull rod 10 and a switch 11, a sliding groove 12a for the switch 11 to slide back and forth is arranged below the front end of the table plate 12, one end of the pull rod 10 is hooked in the middle of the rear end of the switch 11, the other end of the pull rod is hooked on the other end of the unlocking arm 6, return springs (not shown in the figure) are arranged at the left and right of the rear end of the switch 11 at intervals, the other end of each return spring is arranged on the table plate 12, when the switch 11 is pushed forwards, the pull rod 10 is driven to pull the unlocking arm 6, therefore, the locking pin 5 moves to the large end from the small end of the locking hole 1b to realize unlocking, and under the action of the return springs, the switch 11 and.
In order to facilitate the rotation of the shell body 1, the included angle between two rollers 2 close to the upper end is between 125 degrees and 155 degrees, and the other rollers 2 are uniformly arranged in the reflex angle.
For making the body enclosing cover 3 and the housing body 1 between the lock more firm, the body enclosing cover 3 evenly is provided with at least three back-off 3a, and the position department that corresponds the back-off on the housing body 1 is provided with breach 1 d.
In order to prevent the rollers 2 from leaving the notch a during rotation and to facilitate the processing of the notch a, the notch a is formed into a semicircular notch.
To reduce the length of the unlocking arm 6, the unlocking arm 6 is designed in a V-shape. When 6 unblock arms are needed, locking round pin 5 is interference fit with locking hole 1b, for guaranteeing that 6 can become clearance fit with locking round pin 5 by interference fit of unblock arms, with the one end forked back of 6 of unblock arms and the fixed linking to each other of the left and right sides of locking round pin 5, can increase the unblock power of removing locking round pin 5.