JPH0535745Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a seat with side supports that can be moved forward and backward.

Conventional Technology In recent years, side supports have been installed on the back sides of the driver's seat, passenger seat, and passenger seat of automobiles, railway vehicles, etc., to improve the stability of the occupants, safety of driving, and riding against vibrations and rolling motions during driving. Both side supports were molded integrally with the seat frame to maintain comfort.

Problems that the invention aims to solve However, conventional side supports that are molded integrally with the frame protrude forward from the side of the back of the seat and are shaped to wrap around the body of the seated person. Because the seat is in close contact with the body, there is a drawback that when leaving or sitting down, the body comes into contact with the seat, making it difficult to perform these movements.

In order to solve the above-mentioned drawbacks, the present invention has a structure in which the side support on the door side of the car seat or the entrance/exit side of the vehicle can be slid and fixed in the front and rear directions with respect to the back. The purpose of this system is to allow the side supports to be displaced and fixed rearward to prevent any hindrance from occurring, to ensure smooth movement of the side supports, and to allow the side supports to be fixed in the reverse position when seated, retaining their conventional functions.

Means for solving the problem This invention is based on support 1 on the door side or entrance/exit side.
The support 1a is installed so that it can be slid in the front and rear directions and can be stopped freely, and when the user leaves the seat, the support 1a is slid backward, retreated to a predetermined position, and once stopped and fixed, and after the seat is seated, the support 1a is slid back again. In order to release the stop and allow it to slide forward and protrude from the side, the side bars 6 of the back frame 4 forming the seat 1 and the support frame 7 opposed to the front of the side bars 6 are connected. Above and below,
A spring 8 having elasticity that presses the support frame 7 forward, a guide mechanism 9 that guides the sliding movement of the support frame 7 in the front and back direction, and a mechanism that temporarily stops and fixes the support frame 7 when the support frame 7 is retreated to a predetermined position. When the support frame 7 is pressed backward again, the support frame 7 is released due to the elasticity of the spring 8.
A sliding and stopping mechanism 12 that can slide forward is installed respectively. The guide mechanism 9 has a pin 10 projecting horizontally and parallelly to the rear above and below the support frame 7, and has a guide part 11 fixed to the side rod 6 facing the pin 10 and guiding the pin 10. configured,
Furthermore, the sliding/stopping mechanism 12 fixes the outer cylinder 13 horizontally and rearwardly with respect to the support 1a, and slidably fits the inner cylinder 17 into the outer cylinder 13. A lock plate 20 is fixed to the rod 6 and rotates vertically on the front side wall 17b of the inner cylinder 17 with a slight upward bias, and the lock plate 20 rotates on the inner upper wall 17a. An inner window hole 18 having a length M from which at least the corner portion 20c can protrude is formed in the outer upper wall 13a of the outer cylinder 13, and when the outer cylinder 13 is retreated together with the support frame 7, the inner window hole 18 is formed. 18, an outer window hole 14 with a length N that allows the corner 20c of the rotating lock plate 20 to protrude is bored, and the outer window hole 14 is formed in the bottom wall 13b of the outer cylinder 13.
At the rear of the outer cylinder 1 due to the elasticity of the spring 8,
The rear stopper 15 that contacts the lock plate 20 when the outer cylinder 3 is extended is fixed, and a rear stopper 15 that contacts the lock plate 20 when the outer cylinder 13 is moved backward against the elasticity of the spring 8 is placed near the front of the bottom wall 13b. Before starting to rotate the lock plate 20, the stopper 16 is fixed, and the long side B of the lock plate 20 has a length L that allows the corner 20c to protrude from the outer window hole 14 when the lock plate 20 is upright, and the short side A is outer cylinder 1
When the outer cylinder 1 is moved backward, the front stopper 16 comes into contact and starts rotating the lock plate 20,
The recess 20b and the contact side 20a are formed so that the rear edge 14a of the outer window hole 14 comes into contact and restricts the forward movement of the outer tube 13 when the outer tube 3 attempts to return to the front position by the elasticity of the spring 8. do.

Function Since the present invention is configured as described above, the outer cylinder 13 and the support frame 7 normally protrude forward together with the support frame 7 due to the elasticity of the spring 8 that tends to expand.
The support 1a protrudes from the side of the back 2 together with the support frame 7 at the tip of the lock plate 2.
Although the rear stopper 15 is in contact with the rear stopper 15, since the long side B is in contact with the lower surface of the outer upper wall 13a of the outer cylinder 13, rotation is restricted and does not occur (FIG. 4).
When you leave your seat, support 1 is shown in Figure 7.
When a is pushed backward against the elasticity of spring 8,
The outer cylinder 13 is guided by the inner cylinder 17 and begins to slide rearward, and at this time, the rear stopper 15 also retreats together with the outer cylinder 13 and separates from the lock plate 20, and the outer window hole 14 is also displaced rearward and moves inside. When the front stopper 16 begins to overlap the window hole 18 and moves back together with the outer cylinder 13 to press the lower front corner 20c of the lock plate 20, the lock plate 20 begins to rotate forward, and at the same time the upper rear parts 20c It begins to protrude from the inner window hole 18 to the outer window hole 14, and soon the front stopper 1
The rear wall 16a of the lock plate 20 has a concave portion 20.
At the stage when the contact side 20a of the front stopper 16 is brought into pressure contact with the rear corner 16b of the front stopper 16 and the recess 20b, the rear upper corner 20c protrudes from the outer window hole 14 and the outer cylinder 1
3's retreat is prevented. Next, when you release your hand from the support 1a, the outer cylinder 13 and the outer window hole 14 begin to slide forward due to the elasticity of the spring 8, which tries to expand as shown in FIG. Since the corner 20c and the recess 20b of the plate 20 protrude, the rear edge 14a of the outer window hole 14 is located in the recess 20.
At the same time, the lower surface 13c of the outer upper wall 13a near the rear edge 14a comes into contact with the contact side 20a of the recess 20b, and the lock plate 20 receives a force that causes the outer cylinder 13 to move forward due to the elasticity of the spring 8. is added and tries to rotate the lock plate 20, but
Lower surface 13c near the rear edge 14a of the outer window hole 14
The contact between the lock plate 20 and the concave portion 20b is a line contact, and the contact position is different from the axis O of the shaft 19, which is the rotation center of the lock plate 20. Therefore, the lock plate 20 cannot rotate, and the outer cylinder 13 and the support 1a
progress is also blocked. At this stage, depending on the relationship between the drilling positions of the outer window hole 14 and the inner window hole 18,
Since the length of the support 1a protruding from the sides of the back 2 is smaller than the original length of the support 1a, it becomes easier for the seated person to leave or sit down.

Next, when you sit down and push the support 1a backward again, the front stopper 16 pushes the front lower corner 20c of the lock plate 20, causing it to rotate further forward, and the lock plate 20 eventually stands upright. The front edge 14b of the outer window hole 14 and the rear wall 16a of the front stopper 16 abut on the upper and lower sides of the long sides, and the rotation of the lock plate 20 is supported by two points, the front edge 14b and the rear wall 16a. At the same time, the outer cylinder 13 is prevented from retreating, so when the user releases the hand, the outer cylinder 13 moves forward again together with the front stopper 16 due to the elasticity of the spring 8, and the front edge 14b and rear wall 16a are locked. The outer window hole 1 of the outer cylinder 13 becomes rotatable because it separates from the plate 20 and eventually moves forward.
The rear edge 14a of 4 pushes the corner 20c and further rotates the lock plate 20, and as the rear edge 14a moves forward, the lock plate 20 rotates and is pressed by the outer upper end 13a, approaching the lying state (Fig. 10). , the rear stopper 15 hits the corner 20c of the lying lock plate 20, and the forward movement of the outer cylinder 13 is stopped (the fourth
), the support 1a returns to its original state in which it protrudes from the side of the back 2.

Embodiment An example of the implementation of the present invention will be explained with reference to a drawing illustrating a car seat in which a side support provided on the side of the door side can be moved forward and backward.
1 is a seat, and the right side in FIG. 1 is assumed to be the door (not shown) side of the car. 2 and 3 are the back and seat portion of the seat 1; 4 and 5 are the back frame and seat frame forming the inside of the back and the seat, respectively; Support frame 7
are disposed facing each other, and a spring 8 having elasticity in the direction of extension is disposed above and below between the side rod 6 and the support frame 7.
are installed horizontally at appropriate intervals so that they can move forward and backward. Reference numeral 9 denotes a guide mechanism installed above and below between the side rod 6 and the support frame 7. A pin 10 is provided in a protruding manner, and a cylindrical guide portion 11 is fixed to the side rod 6 to face the pin 10 and to fit and guide the pin 10 so that the pin 10 can be moved in and out. Reference numeral 12 denotes a sliding and stopping mechanism installed between the upper and lower springs 8 and between the side rod 6 and the support frame 7. As shown in FIGS. 4 to 6, this sliding/stopping mechanism 12 includes 13
is an outer cylinder having a rectangular cross section, and an outer window hole 14 is bored in the outer upper wall 13a toward the rear, and the bottom wall 13b is
A rear stopper 15 and a front stopper 16 are fixed to the rear stopper 15 and the front stopper 16. Reference numeral 17 denotes an inner cylinder into which the outer cylinder 13 is slidably fitted, and has a U-shaped cross section with an opening 17c at the bottom, and an inner window hole 18 near the front end of the inner upper wall 17a.
A shaft 1 installed on the left and right side walls 17b of the inner cylinder 17 is provided below the inner window hole 18.
9, the lock plate 20 is rotatably attached. The lock plate 20 has a substantially rectangular shape, and when the lock plate 20 is in the upright state shown in FIG. The recesses 20b, 20b are formed.

Next, the lengths L and l of the long side B and short side A of the lock plate 20, the mounting position of the shaft 19, the position and length M of the inner window hole 18, the positions of the rear stopper 15 and the front stopper 16, and the outer window The position and length N of the hole 14 and the mutual positional relationship of each part will be explained.

The long side B of the lock plate 20 is rotatable as shown in FIGS. 7 to 10, and has a length L such that the corner 20c slightly protrudes from the outer window hole 14 of the outer cylinder 13 when rotating and standing upright. The distance P from the center of the shaft 19 to the long side A is such that when the lock plate 20 lies horizontally as shown in FIG. Let the length l be in contact with the lower surface 13c of. Further, the shaft 19 is connected to the inner cylinder 17
In the vicinity of the front opening 17c, when the lock plate 20 is rotated, the four corners 20c protrude from the outer window hole 14, and the contact side 20a of the recess 20b
Alternatively, the inner tube may be moved so that the rear edge 14a of the outer window hole 14 is in close contact with or abuts against the corner 20c (FIG. 8), and when the rear edge 14a of the outer window hole 14 is in contact with the corner 20c (FIG. 8). The axis O is set at a position slightly above the vertical center of 17. The inner window hole 18 is located directly above the lock plate 20 with respect to the inner upper wall 17a of the inner cylinder 17, and has a length M that allows the lock plate 20 to rotate around the shaft 19.
to be drilled in

The rear stopper 15 is fixed at a position where it can abut the lock plate 20 and prevent the support frame 7 and the outer cylinder 13 from moving forward when the spring 8 is expanded and the support frame 7 protrudes forward (FIG. 4).
The front stopper 16 is attached to the corner 20c of the lock plate 20 when the outer cylinder 13 is slid by manually pushing the support frame 7 backward against the elasticity of the spring 8.
At this time, the contact side 20a of the recess 20b is pressed against the lock plate 20, and the lock plate 20 is fixed in a position where it can be rotated forward (FIG. 7). Outer window hole 14
The front edge 14b is located at the front stopper 1.
When the outer cylinder 13 is once slid forward, the rear edge 14a abuts against the recess 20b of the lock plate 20 as shown in FIG. Rotate it forward so that it stands upright as shown in Figure 9, and then bring it to the position where it hits the corner 20c and presses it, and when the front stopper 16 hits and the lock plate 20 is rotatable and begins to rotate and when it stands upright as before. , the corner 20c is the outer cylinder 1
It is bored at a position and length N that allows it to protrude slightly upwards from the outer upper wall 13a of No. 3.

Effects According to the present invention, since the side supports on the door side or entrance/exit side of the seat can be moved back, the side supports do not hit the body when leaving and sitting, making it easier to leave and sit. If you move the support back to the specified position, it will automatically lock and stop even if you release your hand, so you do not have to hold the support so that it does not move forward during the movement of leaving and sitting, and your hands are free. This makes it easier to perform various movements. Furthermore, when the seat is seated, if the support, which has been moved back and stopped, is pushed back again, the locked state between the rear edge 14a of the outer window hole 14 and the lock plate 20 is automatically released, and when the support is released, the elasticity of the spring It automatically moves forward and returns to its previous position, so you can operate it while seated, making it extremely simple and easy to operate.
The function as a support for supporting the sides when seated can also be fully demonstrated as before. Also, since the support can be moved back and automatically locked and stopped, the sides of the seat are freed, for example, if you are sitting in a seat next to each other across the aisle. However, the support does not become a barrier when talking with the person sitting next to you, and it is easy to change the direction of your body to face the other person. Furthermore, the mechanism is simple, there is little risk of failure, and it is easy to operate.This mechanism can also be used for seats with support provided on the seat, and in that case, it can also measure the smoothness of the movement of leaving and sitting. .

[Brief explanation of the drawing]

The figures show an example in which the present invention is applied to a side support on the door side of a car seat. Figure 1 is a perspective view of the seat, and Figure 2 is a back frame and side support excluding the seat skin and elastic material. A perspective view of the internal structure of the
Figure 3 is a side view of the main parts showing the relationship between the side rods of the back frame, the support frame, the upper spring, and the sliding/stopping mechanism, and Figure 4 is a side view of the main parts of the sliding/stopping mechanism. , shows the state in which the outer cylinder is extended. Figure 5 is a sectional view taken along line AA in Figure 4, Figure 6 is a sectional view taken along line BB in Figure 4, and Figure 7 shows that when the outer cylinder is manually moved back, the front stopper hits the lock plate and the lock plate is locked. Fig. 8 is a side view of the main part showing the state in which the outer cylinder has started to rotate, and the outer cylinder that has been released moves forward due to the elasticity of the spring, and the rear edge of the outer window hole hits the recess of the lock plate, locking the lock plate. Fig. 9 is a side view of the main parts showing the state in which the outer cylinder has stopped and when the outer cylinder is manually moved back, the front edge of the outer window hole and the front stopper hit the lock plate and stand upright. A side view of the main parts showing the unlocked state, Part 1
FIG. 0 is a side view of the main parts showing a state in which the outer cylinder is released and moves forward due to the elasticity of the spring, and the rear edge hits the lock plate and rotates. Code: 1...Seat, 1a...Support, 2...
Back, 3... Seat, 4... Back frame, 5... Seat frame, 6
... Side rod, 7 ... Support frame, 8 ... Spring, 9 ... Guide mechanism, 10 ... Pin, 11 ... Guide part, 12 ... Sliding and stopping mechanism, 13 ... Outer cylinder,
13a...Outer top wall, 13b...Bottom wall, 13c...
Lower surface, 14... Outer window hole, 14a... Trailing edge, 14b
... Front edge, 15 ... Rear stopper, 16 ... Front stopper, 16a ... Rear wall, 16b ... Rear corner,
17...Inner cylinder, 17a...Inner upper wall, 17b...Side wall, 17c...Opening, 18...Inner window hole, 19...
Shaft, 20... lock plate, 20a... tangent,
20b...concavity, 20c...corner, a...short side,
B...Long side, l...Length, L...Length, M...Length, N...Length, O...Axis, P...Distance.

Claims (1)

[Scope of utility model registration request] A spring 8 having elasticity that presses the Zapoto frame 7 forward is provided above and below between the side bar 6 of the back frame 4 forming the seat 1 and the support frame 7 opposed to the front of the side bar 6; A guide mechanism 9 guides the sliding movement of the support frame 7 in the front-rear direction, and when the support frame 7 is retreated to a predetermined position, the support frame 7 is temporarily stopped and fixed, and when the support frame 7 is pressed backward again, it is released and the spring is released. A sliding/stopping mechanism 12 that can slide the support frame 7 forward by the elastic force of the guide mechanism 9 is installed, and the guide mechanism 9 moves the pins 10 upward and downward of the support frame 7 horizontally and in parallel. A guide part 11 is provided protrudingly and fixed to the side rod 6 to face the pin 10 and guide the pin 10, and furthermore, the sliding/stopping mechanism 12 moves the outer cylinder 13 backwardly and horizontally with respect to the support 1a. and the outer cylinder 13
The inner cylinder 17 is slidably fitted into the inner cylinder 17, and the inner cylinder 17 is fixed to the side rod 6, and the front side wall 17b of the inner cylinder 17 has a lock plate 20 that rotates in the vertical direction.
is pivoted slightly upwardly, and the inner upper wall 17a
The inner window hole 18 has a length M that allows at least the corner portion 20c to protrude when the lock plate 20 rotates.
A lock plate 20 is provided on the outer upper wall 13a of the outer cylinder 13, and the lock plate 20 rotates while aligning with the inner window hole 18 when the outer cylinder 13 is retracted together with the support frame 7.
An outer window hole 14 with a length N that allows the corner portion 20c of the outer tube 13 to protrude is bored, and the outer tube 13 is extended by the elasticity of the spring 8 at the rear of the bottom wall 13b of the outer tube 13. The rear stopper 15, which is in contact with the lock plate 20 at times, is fixed, and the rear stopper 15, which is in contact with the lock plate 20 when the outer cylinder 13 is retreated against the elasticity of the spring 8, is placed near the front of the bottom wall 13b. Stopper 1 before starting to rotate
6 is fixed, and the long side B of the lock plate 20 has a length L that allows the corner 20c to protrude from the outer window hole 14 when standing upright, and the short side A has a length L that allows the corner 20c to protrude from the outer window hole 14 when the outer cylinder 13 is retracted. When the stopper 16 comes into contact and begins to rotate the lock plate 20, and when the outer cylinder 13 tries to return forward due to the elasticity of the spring 8, the rear edge 14a of the outer window hole 14 comes into contact and the outer cylinder 13
The recess 20b and the tangent side 20a are arranged so as to restrict the forward movement of the
A seat with side supports that can be moved forward and backward.