JP2740840B2 - Headless holding device - Google Patents

Description

The present invention relates to a headrest holding device.

(Prior Art) JP-A-61-60763 and JP-A-57-1
Japanese Patent No. 52055 discloses a support cylinder inserted into a mounting member provided in a backrest sheet, a housing integrally formed on an upper portion of the support cylinder, and a pillar of a headrest provided in the housing. In a headrest holding device having an engagement body having an engagement portion engaged with an engagement recess and a spring biasing the engagement portion to engage the engagement recess, the engagement body is a pair of engagement members. It describes a headrest holding device in which a pressing coil spring is provided between a knob provided at a base of the moving arm and the housing and attached to a tip of the moving arm through an engaging groove provided in the housing.

Further, conventionally known Japanese Utility Model Application Publication No. Sho 60-108241 discloses a supporting cylinder inserted into a mounting member provided in a backrest sheet, a housing integrally formed on an upper portion of the supporting cylinder, Holding of a headrest having an engaging body having an engaging portion that engages with an engaging concave portion of a pillar of a headrest provided in a housing, and a spring biasing the engaging portion to engage with the engaging concave portion. In the device, the engagement body is configured to rotate and engage around a pillar axis, the spring locks one end to the housing,
It describes a configuration in which the other end is locked to the seat side.

(Problems to be Solved by the Invention) Japanese Utility Model Application Laid-Open No. 61-60763 and Japanese Utility Model Application Laid-Open No.
In the configuration described in Japanese Patent Laid-Open Publication No. H06-27139, all of the configurations are configured so that the engaging body is inserted from the side and locked at the tip of the moving arm provided on the housing.
There is a problem that the configuration is complicated and the assembly is considerably troublesome. That is, first, the pressing coil spring is mounted between the knob and the housing, and then, the moving arm is pushed in against the elasticity of the pressing coil spring, so that the insertion hole at the tip of the moving arm and the engaging groove provided in the housing. Are superposed, and while maintaining this state, the shaft-shaped engaging body is inserted and locked from the side, which is considerably troublesome.

Further, the device described in the conventionally known Japanese Utility Model Application Laid-Open No. 60-108241 does not stand alone as a headrest holding device due to the configuration in which the other end of the spring is locked to the seat side. However, there is also a problem that the management and storage before assembling is considerably troublesome, and the operation is uncertain due to the configuration of rotating the engagement body.

The present application relates to a headrest holding device that is easy to assemble and operates reliably.

(Means for Solving the Problems) Therefore, according to the present invention, the mounting member 6 provided in the backrest sheet 1 is provided.
, A housing 9 integrally formed on an upper portion of the support cylinder 5, and an engagement portion that engages with an engagement recess 8 of a pillar 7 of a headrest provided on the housing 9. In a headrest holding device having an engagement plate 16 having an engagement plate 15 and a spring 22 for urging the engagement portion 15 to engage with the engagement recess 8, the engagement portion 15 of the engagement plate 16 is provided. Is configured so as to engage only with the engaging recess 8 of the pillar 7 and not to engage with the housing 9. The engaging plate 16 is provided with a projection 19 protruding downward. The spring 22 is fitted into a vertical moving groove 21 provided in the body 9 from above. The spring 22 is formed as a pressing coil spring and inserted into a housing 23 provided below the engaging plate 16 of the housing 9. This is a device for holding the headrest in contact with the projection 19.

Therefore, in the present invention, in the above-mentioned device, the engaging plate 16 slides between the locked position and the unlocked position on the housing 9 and engages with the engaging concave portion 8 of the pillar 7 of the headrest. It has an insertion hole 17 provided with
The housing 23 is configured to be opened with an insertion hole 24 provided on only one side, and one of the springs 22 is
23 is a headrest holding device in contact with an inner surface and a projection 19 projecting downward from the moving groove 21 on the other side.

Accordingly, the present invention provides the device, wherein the housing 9 is provided with an engaging recess 31 at a position closer to the insertion hole 17 than the end surface of the moving groove 21 opposite the insertion hole 17, and the engagement plate 16 is provided with the engagement recess 31. An engagement projection 32 is provided for engagement with the engagement recess 31. The projection 19 is fitted into the movement groove 21 from above to abut the spring 22, and then the engagement plate 16 is further moved in the locking direction. And a headrest holding device configured such that the engaging projections 32 engage with the engaging concave portions 31.

(Embodiment) One embodiment of the present invention will be described with reference to the drawings. 1 is a backrest sheet for a vehicle seat, 2 is a frame of the backrest sheet 1, 3 is a cushion material of the backrest sheet 1,
The outer peripheral surface of the cushion material 3 is covered with a skin 4.

Reference numeral 5 denotes a support cylinder formed of a synthetic resin. The support cylinder 5 is fixed to an attachment member 6 fixed to the skeletal frame 2, and a pillar 7 of a headrest is inserted into the support cylinder 5 from above. Is supported up and down freely. The pillar 7 is formed of a metal round bar, and engagement recesses 8 are formed on the outer peripheral surface at predetermined intervals vertically.

On the upper part of the support cylinder 5, the housing 9 is integrally formed to form the holding body 40. At the substantially vertical center of the housing 9, a horizontal substrate 10 is formed which is in contact with the upper surface of the cushion material 3 of the backrest sheet 1, and the lower end of the lower part 43 of the substrate 10 is provided with the support cylinder 5. Connect the upper ends integrally.

The lower part 43 has an insertion hole connected to the support cylinder 5.
11 is formed, and the pillar 7 is inserted through the insertion hole 11.

The substrate 10 has a quadrangular shape, and has an upright wall 12 that rises upward on three sides of its outer peripheral edge. A horizontally protruding flange 13 is formed on the inner back side surrounded by the upright wall 12. The protruding flange 13 is provided only on the back side, and the entrance side is open. A sliding groove 14 is formed between the protruding flange 13 and the upper surface of the substrate 10, and an engaging plate 16 is slidably inserted into the sliding groove 14. Therefore, only the front end and the side edge of the engagement plate 16 fit into the slide groove 14 and slide.

Reference numeral 20 denotes an opening for attaching the housing 9 of the engagement plate 16.

The engagement plate 16 is formed of a metal flat plate, and has an insertion hole 17 that is larger than the insertion hole 11 on the distal end side. In the insertion hole 17, an engaging portion 15 overlapping with the insertion hole 11 is provided.
And the engaging portion 15 is engaged with the engaging recess 8 of the pillar 7. Reference numeral 18 denotes a knob of the engagement plate 16.

Projections 19, 19 protruding downward are formed on both left and right sides of the side edge between the insertion hole 17 and the knob portion 18 of the engagement plate 16.
The projections 19 are formed by bending to secure strength in the moving direction of the engagement plate 16.

The substrate 10 is formed with moving grooves 21, 21 parallel to the moving direction of the engaging plate 16, and the moving grooves 21, 21
The projections 19, 19 projecting downward from 16 are fitted from above.

Housings 23 of the coil springs 22 are formed in a lower portion 43 below the moving grooves 21. Housing 2
3 and 23 communicate with the outside through insertion holes 24 and 24,
Insert the coil springs 22, 22 from 4, 24. The coil springs 22 are buried in the cushion member 3 of the backrest sheet 1 below the substrate 10. Coil spring 2
The projections 19 of the engagement plate 16 abut against the ends of the engagement plates 2 and 22, and constantly urge the engagement portion 15 of the engagement plate 16 to engage with the engagement recess 8 of the pillar 7. .

A recess 25 in which the head 41 of the screw 26 is depressed is formed in the substrate 10 and the lower portion between the movement groove 21 and the movement groove 21, and an insertion port 42 for the screw 26 is formed in the center of the recess 25. A screw 26 is inserted into the recess 25 from above and screwed to the upper plate 27 of the mounting member 6.

The screw 26 has a protrusion 1 on the engagement plate 16 so that the screw 26 can be fixed with the engagement plate 16 attached to the housing 9.
An insertion hole 30 larger than the head 41 of the screw 26 is formed between 9 and 19, and the screw 26 is inserted into the insertion opening 42 through the insertion hole 30.

On the opening 20 side of the substrate 10, an engagement recess 31 is formed, and the engagement recess 31 has a knob portion 18 of the engagement plate 16.
The engagement protrusion 32 formed on the lower surface of the second member is fitted. Engagement projection 32
Abuts against the wall 33 in the engagement recess 31 to prevent the engagement plate 16 from coming off.

Reference numeral 34 denotes a lid attached to the upper part of the housing 9, and an insertion hole 35
And an opening 36, and the projection 37 formed on the periphery is
Is mounted by engaging with an engagement groove 38 formed on the outer periphery of the.

(Operation) Next, the operation will be described.

Since the present invention is configured as described above, housings 23 of the coil springs 22, 22 are formed in a lower portion 43 below the substrate 10 of the housing 9 of the holder 40, and the housings 23, 23
4, 24, because it communicates with the outside, the insertion holes 24, 24
From above, the coil springs 22, 22 are inserted.

A sliding groove 14 is provided between the rear upper surface of the substrate 10 and the protruding flange portion 13.
Are formed on the side of the opening 20 of the substrate 10 so that the leading end of the engaging plate 16 is fitted into the sliding groove 14 of the housing 9, and the protrusion of the engaging plate 16 is formed. 19, 19 to substrate 10
When the coil spring 22 is resiliently contacted with the engagement plate 16, the engagement projection 32 on the lower surface of the knob 18 contacts the wall 33 of the engagement recess 31. , Attached to the housing 9.

When the support cylinder 5 of the holding body 40 is inserted into the mounting holes formed in the upper part 27 and the lower plate 39 of the mounting member 6 provided in the backrest sheet 1, the housing 9 is inserted into a part of the upper plate 27. The lower part 43 abuts. In this case, the concave portion 25 is formed in the substrate 10 and the lower portion 43 of the housing 9 of the holding body 40, and the insertion hole 42 of the screw 26 is formed in the center of the concave portion 25. A screw 26 is inserted from above, and the support cylinder 5 is fixed to the upper plate 27 of the mounting member 6 by a screw.

In this case, since the insertion hole 30 larger than the head 41 of the screw 26 is formed between the projections 19 of the engagement plate 16, the screw 26 Can be fixed with the attached.

Since the engagement groove 38 is formed at the lower edge of the side portion of the substrate 10, the cover 34 is attached to the housing 9 by pushing in while the projection 37 of the cover 34 is engaged with the engagement groove 38.

When the knob 18 of the engagement plate 16 is pushed forward, the insertion hole 17 of the engagement plate 16 coincides with the insertion hole 11 of the substrate 10, so that the pillar of the headrest is inserted from above.

When the knob 18 of the engagement plate 16 is released, the engagement plate
Since the coil spring 22 is in contact with the 16 projections 19, the coil spring 22 returns to the original position by the elastic force of the coil spring 22, and the engagement plate
The engaging portion 15 of the engaging portion 16 engages with the engaging concave portion 8 of the pillar 7,
Hold the headrest.

In this case, the coil spring 22 that urges the engagement plate 16 so that the engagement portion 15 of the engagement plate 16 engages with the engagement recess 8 of the pillar 7 includes a holding member 40 that contacts the upper surface of the backrest sheet 1.
Is housed in a lower portion 43 below the substrate 10 of the housing 9,
Since the lower portion 43 is embedded in the cushion member 3 of the backrest sheet 1, the thickness of the housing 9 exposed on the upper surface of the backrest sheet 1 can be reduced. Therefore, when the headrest is lowered to the lowest position, the backrest sheet 1
And the height adjustment range of the headrest can be increased.

(Effects) Accordingly, the present invention provides the mounting member 6 provided in the backrest sheet 1.
, A housing 9 integrally formed on an upper portion of the support cylinder 5, and an engagement portion that engages with an engagement recess 8 of a pillar 7 of a headrest provided on the housing 9. In a headrest holding device having an engagement plate 16 having an engagement plate 15 and a spring 22 for urging the engagement portion 15 to engage with the engagement recess 8, the engagement portion 15 of the engagement plate 16 is provided. Is configured so as to engage only with the engaging recess 8 of the pillar 7 and not to engage with the housing 9. The engaging plate 16 is provided with a projection 19 protruding downward. 9 is fitted into a vertical moving groove 21 provided from above, the spring 22 is formed as a pressing coil spring, and inserted into a housing 23 provided at a position below the engaging plate 16 of the housing 9. Since the headrest holding device is in contact with the projection 19, the engagement of the engagement plate 16 15 is configured to engage only with the engaging recess 8 of the pillar 7 and not to engage with the housing 9, so that the mounting is easy, and the engaging plate 16 has a projection protruding downward. The assembly is completed only by bringing the spring 22 into contact with 19, so that the assembly is very easy.

Therefore, in the present invention, in the above-mentioned device, the engaging plate 16 slides between the locked position and the unlocked position on the housing 9 and engages with the engaging concave portion 8 of the pillar 7 of the headrest. It has an insertion hole 17 provided with
The housing 23 is configured to be opened with an insertion hole 24 provided on only one side, and one of the springs 22 is
23 is a device for holding the headrest in contact with the inner surface and the other in contact with the projection 19 projecting downward from the moving groove 21. Therefore, the engagement plate 16 is connected to the housing 9 between the locked position and the unlocked position. Since it is formed in a single plate shape with an insertion hole 17 provided with an engagement portion 15 that slides between and engages with the engagement recess 8 of the pillar 7 of the headrest, it can be easily formed by press working, One of the springs 22 is the housing 23.
Assembly is completed simply by contacting the inner surface with the projection 19 projecting below the moving groove 21 on the other side, so that assembly is extremely easy.

Accordingly, the present invention provides the device, wherein the housing 9 is provided with an engaging recess 31 at a position closer to the insertion hole 17 than the end surface of the moving groove 21 opposite the insertion hole 17, and the engagement plate 16 is provided with the engagement recess 31. An engagement projection 32 is provided for engagement with the engagement recess 31. The projection 19 is fitted into the movement groove 21 from above to abut the spring 22, and then the engagement plate 16 is further moved in the locking direction. And the headrest holding device is configured so that the engagement protrusion 32 is engaged with the engagement recess 31, so that the protrusion 19 of the engagement plate 16 abuts against the elasticity of the spring 22. It is only necessary to make the spring 22 easy to install,
In this state, when the engagement plate 16 is moved in the locking direction, the engagement is completed because the engagement protrusion 32 engages with the engagement concave portion 31. Assembly is very easy.

[Brief description of the drawings]

1 is a vertical side view, FIG. 2 is an assembled perspective view, FIG. 3 is a perspective view of insertion of a coil spring, FIG. 4 is a vertical front view, FIG. 5 is a vertical front view, FIG. FIG. 7 is a plan view of the engagement plate. DESCRIPTION OF SYMBOLS 1 ... back seat 2 ... frame frame 3 ... cushion material 4 ... skin 5 ... support cylinder 6 ... attachment member
7 pillar, 8 engaging recess, 9 housing, 10 board, 11 insertion hole, 12 standing wall, 13 protruding flange, 14
…… Sliding groove, 15… Engagement part, 16… Engagement plate, 17…
... insertion hole, 18 ... knob, 19 ... projection, 20 ... opening, 21 ... moving groove, 22 ... coil spring, 23 ... housing, 24 ... insertion hole, 25 ... recess, 26 ... ... screws, 27 ... upper plate, 30 ... insertion holes, 31 ... engagement recesses, 32 ... engagement protrusions,
33 ... wall, 34 ... lid, 35 ... insertion hole, 36 ... opening, 37
... Projection, 38 ... engagement groove, 39 ... lower plate, 40 ... holder,
41 ... head, 42 ... insertion slot, 43 ... lower part.

Claims (3)

(57) [Claims] A support cylinder inserted into a mounting member provided in a backrest sheet, a housing integrally formed on an upper portion of the support cylinder, and a housing provided on the housing. Pillar 7 for headrest
Plate having an engaging portion 15 that engages with the engaging concave portion 8
In the headrest holding device having a spring 16 for urging the engaging portion 15 to engage with the engaging recess 8, the engaging portion 15 of the engaging plate 16 is engaged with the pillar 7. The engaging plate 16 is configured to engage only with the engaging recess 8 so as not to engage with the housing 9. The engaging plate 16 is provided with a protrusion 19 protruding downward, and the protrusion 19 is provided on the housing 9. The spring 22 is formed as a pressing coil spring and inserted into a housing 23 provided below the engaging plate 16 of the housing 9 to abut on the projection 19. Headrest holding device. 2. An engaging plate according to claim 1, wherein said engaging plate slides between said lock position and said unlock position in said housing and engages with said engaging recess of said pillar of said headrest. The housing 23 is formed in a single plate shape with an insertion hole 17 provided with an engagement portion 15 to be provided, the housing 23 is configured to be opened by providing an insertion hole 24 only on one side, and one of the springs 22 is A headrest holding device that abuts against the inner surface of the housing and the other abuts against a projection 19 that protrudes below the moving groove 21. 3. The housing 9 according to claim 1, wherein the housing 9 is provided with an engaging recess 31 at a position closer to the insertion hole 17 than an end face of the moving groove 21 on the side opposite to the insertion hole 17, The engaging plate 16 is provided with an engaging protrusion 32 for engaging with the engaging concave portion 31, and the protrusion 19 is fitted into the moving groove 21 from above and brought into contact with the spring 22, and then further engaged. When the mating plate 16 is moved in the locking direction, the engaging projections 32
A headrest holding device configured to engage with 31.