Positioner of chair adjusting device

Abstract

A positioner of a chair adjusting device is disclosed. The positioner is formed by stacking a plurality of positioning plates together. Each of the positioning plates is formed with a positioning section, a combination section, and a penetration section. The combination section is formed of a recessed cavity recessed from one surface and a projecting peg projecting from an opposite surface, and an outside diameter of the projecting peg corresponds to an inside diameter of the recessed cavity, so that for two of the positioning plates that are stacked together to be respectively on an upper side and a lower side, the projecting peg of the positioning plate on the upper side is receivable into and fit in the recessed cavity of the positioning plate on the lower side to have the two positioning plates that are stacked together on the upper and lower sides combined together through tight fitting.

Claims

1. A positioner of a chair adjusting device, wherein the positioner is formed by stacking a plurality of positioning plates together; each individual piece of the positioning plates is formed with a positioning section, a combination section, and a penetration section; the combination section is formed of a recessed cavity recessed from one surface and a projecting peg projecting from an opposite surface, an outside diameter of the projecting peg corresponding to an inside diameter of the recessed cavity, so that for two of the positioning plates that are stacked together to be respectively on an upper side and a lower side, the projecting peg of the positioning plate on the upper side is receivable into and fit in the recessed cavity of the positioning plate on the lower side to have the two positioning plates that are stacked together on the upper and lower sides combined together through tight fitting, wherein the plurality of positioning plates comprise a lowermost positioning plate and multiple positioning plates sequentially stacked on the lowermost positioning plate in an upward direction, wherein the projecting peg of the lowermost positioning plate is pressed in the upward direction with a stamping pillar so as to cause inward shrinkage of the projecting peg of the lowermost positioning plate in the upward direction, and the multiple positioning plates stacked on the lowermost positioning plate absorb, in a progressively reducing manner, an amount of the inward shrinkage of the projecting peg of the lowermost positioning plate.

2. The positioner of the chair adjusting device according to claim 1, wherein the positioning section comprises a plurality of positioning teeth.

3. The positioner of the chair adjusting device according to claim 1, wherein the penetration section comprises a number of through holes and the number of the through holes is two.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic view showing arrangement of a prior art positioner of a chair adjusting device the positioner.

(2) FIG. 2 is a schematic view showing assembling of the prior art positioner.

(3) FIG. 3 is an exploded view showing a positioner according to the present invention

(4) FIGS. 4 and 5 are schematic views showing operation of assembling of the positioner according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(5) For better understanding of the structure of the present invention, and also the efficacy that can be achieved thereby, a description will be provided below with reference to the attached drawings:

(6) Referring firstly to FIG. 3, the present invention provides a positioner of a chair adjusting device. The positioner 3 is formed by stacking a plurality of positioning plates 4.

(7) As shown in FIGS. 3 and 4, the positioning plates 4 are plates formed through die stamping. The positioning plates 4, when being made in a plate form by means of die stamping, is also being stamped to form a positioning section 41 on an edge of one side thereof and a combination section 42 and a penetration section 43 at an opposite side.

(8) As shown in FIGS. 3 and 4, the positioning section 41 is formed of a plurality of positioning teeth 411 in a corrugated form.

(9) As shown in FIGS. 3 and 4, the combination section 42 is formed of a recessed cavity 421 formed by recessing one surface and a projecting peg 422 formed to project from an opposite surface, and an outside diameter of the projecting peg 422 corresponds to an inside diameter of the recessed cavity 421, so that two of the positioning plates 4 that are stacked on upper and lower sides are such that the projecting peg 422 of the upper-side positioning plate 4a is receivable into and fit in the recessed cavity 421 of the lower-side positioning plates 4b to have the two positioning plates 4 stacked on the upper and lower sides to be combined together in a tight fitting manner. In the present invention, an arrangement of two combination sections 42 is taken as an example for illustration.

(10) As shown in FIG. 3, the penetration section 43 is formed of a through hole 431, and in the present invention, an arrangement of two such through holes 431 are taken as example for illustration of the penetration section 43.

(11) As shown in FIGS. 3, 4, and 5, one way of assembling the positioner 3 according to the present invention is such that die stamping is applied to form an individual piece of the positioning plates 4 that is made in the form of plate including a positioning section 41, a combination section 42, and a penetration section 43; an automatized operation is conducted to automatically move the individual piece of the positioning plates 4 that is stamped with the positioning section 41, the combination section 42, and the penetration section 43 to stack at a site of a combination stamping die, so that one individual piece of the positioning plates 4 is stacked on another one individual piece of the positioning plates 4 and are subjected to stamping to combine together, namely the projecting peg 422 of the upper-side positioning plate 4a is fit, by means of the stamping force, into the recessed cavity 421 of the lower-side positioning plate 4b to have the two positioning plates 4a, 4b stacked on each other at the upper and lower sides to combine together through tight fitting therebetween; and as such, a further piece of the positioning plates 4 is then stacked and subsequent subjected to stamping for combination, and when the plurality of positioning plates 4 are combined, through stamping, to show a preset thickness, a stamping pillar A is applied to press on the projecting peg 422 of a lowermost positioning plate 4c to force the projecting peg 422 of the lowermost positioning plate 4c to shrink inward in the upward direction thereby making the portion of the lowermost positioning plate 4c on which the projecting peg 422 is located inwardly recessed, namely the surface of the lowermost positioning plate 4c where the projecting peg 422 is located is set in a condition of being slightly flat without projecting therefrom, and this completes the assembling of the positioner 3. It is noted that when the projecting peg 422 of the lowermost positioning plate 4c is being stamped to shrink inward in the upward direction, all the positioning plates 4 that are located above the lowermost positioning plate 4c can absorb, in a progressively reducing manner, the amount of inward shrinkage of the projecting peg 422 of the lowermost positioning plate 4c.

(12) The efficacy of the present invention is that the positioner 3 is formed by stacking a plurality of positioning plates 4 together; each individual piece of the positioning plates 4 is formed with a positioning section 41, a combination section 42, and a penetration section 43; the combination section 42 is formed of a recessed cavity 421 recessed from one surface and a projecting peg 422 projecting from an opposite surface, an outside diameter of the projecting peg 422 corresponding to an inside diameter of the recessed cavity 421, so that for two of the positioning plates 4 that are stacked together to be respectively on an upper side and a lower side, the projecting peg 422 of the positioning plate 4a on the upper side is receivable into and fit in the recessed cavity 421 of the positioning plate 4b on the lower side to have the two positioning plates 4 that are stacked together on the upper and lower sides combined together through tight fitting. As such, the operation of assembling of the positioner 3 is simplified, so as to reduce the cost of the chair adjusting device.