CN106080330B - A kind of hard and soft adjustable bus pull ring - Google Patents

Abstract

The invention relates to a rigid-flexible adjustable bus pull ring, which comprises an upper fixed component, a lower movable component, and a rigid-flexible adjustment component; the upper fixed component is fixed relative to a horizontal bar; the upper fixed component and the lower movable component pass through a spherical Cooperate to form a rotating pair; the rigid-flexible adjustment component slides in the cavity of the upper fixed component and the lower movable component through the compression and reset of the spring. According to the rigid-flexible adjustable bus pull ring of the present invention, passengers can adjust the rigidity and flexibility of the pull ring in real time according to their own needs, and the pull ring automatically returns to a flexible state after the passenger leaves, avoiding the existing bus pull. The problem of insufficient ring rigidity.

Description

A Rigid-Flexible Adjustable Pull Ring for Buses

technical field

The invention relates to a bus pull ring with adjustable rigidity and flexibility, which is used in bus or subway carriages.

Background technique

The bus is a common means of transportation for people's daily trips, but the number of seats on the bus often cannot meet the needs of passengers, so there must be some passengers who can only stand. In order to make it easier for passengers without seats to stand firmly, a crossbar is generally provided in the bus, and a pull ring for passengers to hold is suspended on the cross rod. The staff standing in the compartment grasps the pull ring to maintain balance, so as not to fall. Nylon straps are mostly used for flexible connections in current bus pull rings. However, during the driving process of the bus, whenever it stops, starts, turns, or brakes suddenly, due to the existence of inertia and the soft connection of the pull ring, passengers who are standing and grabbing the pull ring are not easy to fall, but shaking is inevitable. , Unstable shaking makes people very uncomfortable, and sometimes even leads to some disputes and safety accidents. If the pull ring can be fixed firmly under the necessary conditions, the body of the passenger is not easy to shake when holding the pull ring, and the balance of the body can be maintained more easily.

Contents of the invention

The purpose of the present invention is to address the deficiencies of the prior art, combined with the external dimensions of the existing bus pull ring, to provide a rigid and flexible adjustable bus pull ring, passengers can switch the rigidity and flexibility of the pull ring in real time according to their own needs , and the pull ring automatically returns to a flexible state after the passenger leaves, avoiding the problem of insufficient rigidity of the pull ring of the existing bus.

To solve the above problems adopt the following technical solutions:

A rigid-flexible adjustable bus pull ring, comprising an upper fixed component, a lower movable component, and a rigid-flexible adjustment component; the upper fixed component is fixed relative to a horizontal bar; the upper fixed component and the lower movable component form a rotation through spherical fit Auxiliary; the rigidity and flexibility adjustment component slides in the cavity of the upper fixed component and the lower movable component through the compression and reset of the spring.

The upper fixing assembly includes two fixing rings, a ball head piece and a fixing retaining ring; the two fixing rings tightly embrace the horizontal bar to form a shaft hole fit, and are fixed on the horizontal bar through bolt connection; the lower end of the fixing ring is provided with a through hole , The upper end surface of the ball joint is provided with a threaded hole, and the fixed ring and the ball joint are fixedly connected by bolts; the cylindrical surface of the ball joint and the surface of the inner through hole of the fixed retaining ring are threaded, and the two are fixedly connected by threads.

The lower movable assembly includes a spherical end cap, a force transmission column, two protective blocks, a transition retaining ring and a handle; the spherical end cover and the ball joint form a rotating pair through spherical cooperation; the cylindrical surface of the upper end of the force transmission column cuts threads and The inner hole of the spherical end cover is fixedly connected by thread; the handle is fixedly connected with the lower end surface of the force transmission column through bolts; the transition retaining ring is sleeved on the outside of the force transmission column, and is fixedly connected with the handle by screws; two protective blocks are distributed on both sides of the transition retaining ring, It is fixed on the handle by bolts.

The rigidity-flexible adjustment assembly includes a spring, a stiffness cylinder, two outer pins, two flexible ropes, two sliding shafts and a pull rod; the stiffness cylinder is located in the annular space formed by the inner cylindrical surface of the transition retaining ring and the outer cylinder of the force transmission column. In the cavity; the spring is located between the lower end surface of the inner cylinder of the rigidity cylinder and the large end surface of the force transmission column; a threaded hole is provided on the side of the rigidity cylinder, and the outer pin is fixed on the rigidity cylinder through threads; the flexible rope is located in the groove of the protection block, One end of the flexible rope is an external bolt, and the other end is a sliding shaft; the sliding shaft passes through the slot on the handle and the through hole provided on the pull rod to fix.

Compared with the prior art, the present invention has the following obvious advantages:

1. The invention relates to a rigid-flexible adjustable bus pull ring, passengers can switch the rigidity and flexibility of the pull ring in real time, and the operation is simple and convenient.

2. In the present invention, the transition cylinder is embedded into the annular space formed by the ball joint and the fixed retaining ring in the upper fixed assembly, and then the indirect fixation of the upper fixed part and the lower movable assembly is realized. The embedding length is relatively large, and the cylindrical surface adopts a small clearance fit , fixed firmly, high strength.

3. The present invention adopts the spherical surface of the ball joint and the rotating joint of the ball end cap to realize the connection between the upper fixed assembly and the lower movable assembly. When the pull ring is in a flexible state, the lower movable assembly can swing freely. Therefore, even if a passenger accidentally bumps into the tab, it will not be injured.

4. A rigid-flexible adjustable pull ring for buses of the present invention. When the pull ring is in a rigid state, the cutout at the upper end of the rigidity cylinder engages with the cutout at the side of the cylinder of the ball head, and the rotation of the transition cylinder around the axis is locked. At the same time, the latch pin is located in the open groove of the transition retaining ring, so the axial rotation of the transition retaining ring is locked, and furthermore, the axial rotation of the entire lower movable assembly is locked, so the pull ring does not rotate.

5. The present invention uses the deformation recovery of the spring itself to realize the reset of the stiffness cylinder in the stiffness adjustment component. After the passenger leaves, the tab is automatically switched from a rigid state to a flexible state, avoiding accidental bumping into the tab by tall passengers And hurt.

Description of drawings

Fig. 1 is a schematic diagram of the initial state of a bus pull ring with adjustable rigidity and flexibility according to the present invention.

Fig. 2 is a cross-sectional view of a rigid-flexible adjustable bus pull ring in the initial state of the present invention.

Fig. 3 is a cross-sectional view of a rigid-flexible adjustable bus pull ring in a rigid state according to the present invention.

Fig. 4 is a schematic diagram of an upper fixing assembly of a bus pull ring with adjustable rigidity and flexibility according to the present invention.

Fig. 5 is a schematic diagram of a lower movable assembly of a bus pull ring with adjustable rigidity and flexibility according to the present invention.

Fig. 6 is a schematic diagram of a rigid-flexible adjustment assembly of a bus pull ring with adjustable rigidity and flexibility according to the present invention.

Detailed ways

Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

As shown in Figure 1, a rigid-flexible adjustable bus pull ring includes an upper fixed assembly I, a lower movable assembly II, and a rigid-flexible adjustment assembly III; the upper fixed assembly I is fixed relative to the horizontal bar 1; the upper The fixed component I and the lower movable component II form a rotating pair through spherical fit; the rigid-flexible adjustment component III slides in the cavity of the upper fixed component I and the lower movable component II through the compression and reset of the spring.

As shown in Figures 2 and 4, the upper fixing assembly I includes two fixing rings 2, a ball joint 3 and a fixing retaining ring 4; the two fixing rings 2 tightly embrace the horizontal bar 1 to form a shaft-hole fit, through which the bolts It is connected and fixed on the horizontal bar 1; the lower end surface of the fixed ring 2 is provided with a through hole, and the upper end surface of the ball joint 3 is provided with a threaded hole, and the fixed ring 2 and the ball joint 3 are fixedly connected by bolts; the cylindrical surface of the ball joint 3 and the fixed stop Threads are cut on the surface of the through hole in the circle 4, and the two are fixedly connected by threads.

As shown in Figures 2 and 5, the lower movable assembly II includes a spherical end cover 5, a force transmission column 6, two protection blocks 7, a transition ring 8 and a handle 9; the spherical end cover 5 and the ball joint 3. The rotating pair is formed through spherical fit; the cylindrical surface cutting thread at the upper end of the force transmission column 6 is fixedly connected with the inner hole of the spherical end cover 5 through threads; the handle 9 is fixedly connected with the lower end surface of the force transmission column 6 through bolts; The outer side of the force column 6 is fixedly connected with the handle 9 by screws; two protective blocks 7 are distributed on both sides of the transition retaining ring 8 and fixed on the handle 9 by bolts.

As shown in Figures 2 and 6, the stiffness-flexibility adjustment assembly III includes a spring 10, a stiffness cylinder 11, two outer pins 12, two flexible ropes 13, two sliding shafts 14 and a pull rod 15; the stiffness cylinder 11 Located in the annular cavity formed by the inner cylindrical surface of the transition ring 8 and the outer cylinder of the force transmission column 6; the spring 10 is located between the lower end surface of the inner cylinder of the rigidity cylinder 11 and the large end surface of the force transmission column 6; the side of the rigidity cylinder 11 is threaded hole, the outer pin 12 is fixed on the rigidity cylinder 11 by threads; the flexible rope 13 is located in the groove of the protection block 7, one end of the flexible rope 13 is the outer pin 12, and the other end is the sliding shaft 14; the sliding shaft 14 passes through the handle 9 The through hole that offers on the empty groove on the top and pull bar 15 is fixed.

The present invention uses concrete steps as follows:

As shown in Figures 2 and 3, the passenger slowly pulls the pull rod 15 downwards by hand, and the pull rod 15 drives one end of the flexible rope 13 tied on the sliding shaft 14 to move downward, and the other end of the flexible rope 13 is tied to the end of the outer bolt 12, so The outer pin 12 drives the rigidity cylinder 11 to move axially, and the rigidity cylinder 11 is inserted into the cavity of the upper component I gradually vertically upward, and the groove on the upper end of the rigidity cylinder 11 engages with the groove on the side of the cylinder of the ball joint 3, slightly Turn the handle 9, if it cannot be turned, it means that the groove is engaged correctly, and the pull rod 15 is pulled to the bottom and held together with the handle 9. When the passenger leaves, the compressed spring 10 gradually returns to its original length, pushing the stiffness cylinder 11 to move downward in the axial direction, and the outer pin 12 slides downward along the open groove of the transition retaining ring 8, driving the spring fixed on the sliding shaft 14. One end of the flexible rope 13 moves upwards, and then drives the pull rod 15 to move upwards to the initial position.

Claims (3)

1. A rigid-flexible adjustable bus pull ring, characterized in that it includes an upper fixed assembly (I), a lower movable assembly (II), and a rigid-flexible adjustment assembly (III); the upper fixed assembly (I) is relatively It is fixed on the horizontal bar (1); the upper fixed component (I) and the lower movable component (II) form a rotating pair through spherical cooperation; the rigidity and flexibility adjustment component (III) is compressed and reset by the spring on the upper fixed component (I) and the lower movable component (II). The lower movable assembly (II) slides in the cavity, and the stiffness-flexibility adjustment assembly (III) includes a spring (10), a rigidity cylinder (11), two outer pins (12), two flexible ropes (13), Two sliding shafts (14) and pull rods (15); the stiffness cylinder (11) is located in the annular cavity formed by the inner cylindrical surface of the transition retaining ring (8) and the outer cylinder of the force transmission column (6); the spring (10) is located Between the lower end surface of the inner cylinder of the rigidity cylinder (11) and the large end surface of the force transmission column (6); threaded holes are provided on the side of the rigidity cylinder (11), and the outer pin (12) is fixed on the rigidity cylinder (11) through threads; The flexible rope (13) is located in the groove of the protection block (7), and one end of the flexible rope (13) is connected to the external pin (12), and the other end is connected to the sliding shaft (14); the sliding shaft (14) passes through the handle (9) The empty slot of the pull rod (15) is fixed with the through hole provided on the pull rod (15). Passengers pull the pull rod (15) down slowly by hand, and the pull rod (15) drives one end of the flexible rope (13) tied on the sliding shaft (14) to move downward. , the outer pin (12) drives the rigidity cylinder (11) to move axially, and the rigidity cylinder (11) is inserted into the cavity of the upper fixing component (I) vertically upward gradually, when the passenger leaves, the compressed spring ( 10) Gradually restore the original length, push the stiffness cylinder (11) to move downward along the axial direction, and drive one end of the flexible rope (13) fixed on the sliding shaft (14) to move upward, and then drive the pull rod (15) to move upward to the initial position Location. 2. The rigid-flexible adjustable bus pull ring according to claim 1, characterized in that, the upper fixing component (I) includes two fixing rings (2), a ball joint (3) and a fixing retaining ring (4); two fixing rings (2) tightly embrace the horizontal bar (1) to form a shaft hole fit, and are fixed on the horizontal bar (1) through bolt connection; the lower end of the fixing ring (2) has a through hole, and the ball head A threaded hole is provided on the upper surface of the piece (3), and the fixed ring (2) and the ball head piece (3) are fixedly connected by bolts; Or through the threaded fixed connection. 3. The rigid-flexible adjustable bus pull ring according to claim 2, characterized in that, the lower movable assembly (II) includes a spherical end cover (5), a force transmission column (6), two protective blocks (7), transition retaining ring (8) and handle (9); the spherical end cap (5) and the ball head (3) form a rotating pair through spherical cooperation; The inner hole of the spherical end cover (5) is fixedly connected by threads; the handle (9) is fixedly connected with the lower end surface of the force transmission column (6) by bolts; the transition ring (8) is set on the outside of the force transmission column (6), and is connected with the The handle (9) is fixedly connected; two protective blocks (7) are distributed on both sides of the transition retaining ring (8), and are fixed on the handle (9) by bolts.