CN216168372U - Locking assembly - Google Patents

Abstract

The utility model relates to a locking assembly, which comprises a linkage rod and a sliding locking piece connected with one end of the linkage rod; the sliding locking piece comprises a sliding block body and a sliding block seat which are in sliding fit, and the sliding locking piece further comprises a driving piece and a locking pin, wherein the driving piece and the locking pin are movably arranged in the two driving chutes, and one end of the locking pin is movably connected with the driving piece and is perpendicular to the axis of the driving piece. When the linkage rod is pulled, the slider body moves along with the linkage rod, and the driving piece is connected with the lock pin which is limited in the slider seat, so that when the slider body moves, two side surfaces of the driving chute are in contact with the surface of the driving piece, the driving piece is forced to retract inwards, the lock pin connected with the driving piece is synchronously retracted inwards, and the unlocking function of the lock pin is completed. The utility model adopts the inclined plane movement as the drive, and the whole body is in rigid sliding fit, thereby ensuring good synchronism and use durability.

Description

Locking assembly

Technical Field

The utility model belongs to the technical field of wheelchairs, and particularly relates to a locking assembly.

Background

The locking device is an indispensable device for a folding electric wheelchair, and is generally required to have both a simple structure, convenient operation, and good safety.

The electric wheelchair locking device in the prior art is not enough in the convenience and the sensitivity of the storage operation, like the Chinese utility model patent of the publication No. CN208405140U, discloses a folding locking device and uses the wheelchair of the device, the folding locking device is installed on the frame body, because the locking position is pulled and executed by the transmission rod which is worn in the tube during the folding operation, and the transmission rod has small diameter and long length and is integrally fine and thin, so the rigidity is not enough, and the folding operation is not sensitive or the unlocking of both sides can not be synchronous because the transmission rod is bent and flexible during the torque transmission easily.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a locking assembly, which adopts a rigid connection to unlock the locking assembly, so as to ensure the sensitivity and synchronization of the storage operation.

The purpose of the utility model is realized by the following technical scheme: a locking assembly comprises a linkage rod and a sliding locking piece connected with one end of the linkage rod; the sliding lock piece comprises a sliding block body and a sliding block seat which are in sliding fit, a driving chute is arranged on the upper surface of the sliding block body, two side surfaces of the sliding block body are respectively provided with a transverse moving groove and a driving chute communicated with the same side, the sliding lock piece further comprises a driving piece and a lock pin, the driving piece and the lock pin are movably arranged in the two driving chutes, one end of the driving piece is connected with the driving piece, and the lock pin is perpendicular to the axis of the driving piece.

Preferably, the overall shape of the slider body is rectangular, and a mounting part for mounting the linkage rod is concavely arranged from the center of the upper surface of the slider body to one side surface of the slider body. The installation part is used for connecting the linkage rod.

Preferably, the upper surface of the slider body is provided with driving chutes symmetrically arranged towards two sides in a mirror image mode by taking the mounting part as a center, and the driving part is mounted by arranging the driving chutes and the transverse moving groove.

Preferably, the free end of the locking pin has a taper tapering towards the outer end. The taper can ensure that the lock pin is not blocked when the lock pin is switched to unlock and lock.

Preferably, the driving piece is in sliding fit with the driving chute, and the lower part of the driving piece is integrally a cylinder with the diameter matched with the width of the driving chute. The size matching of the two can reduce the dynamic clearance during matching, and can better ensure the synchronism of the lock pins at the two sides.

Preferably, the upper part of the driving piece is a rectangular cap with the side length larger than the width of the driving chute, and the rectangular cap is exposed on the upper surface of the slider body. The rectangular cap is arranged so that the axial direction of the drive member is defined, with the rectangular cap being located on the upper surface of the drive chute.

Preferably, the slider seat cover is established in the slider body outside, and the slider seat provides certain sliding space for the slider body, and the slider seat is the blind end in one side towards the trace, and this blind end is equipped with the through-hole that supplies the trace to pass. The through hole also limits the active space of the linkage rod.

Preferably, the slider body can slide relative to the slider seat only along the axial direction of the linkage rod, two opening slideways perpendicular to the axis of the linkage rod are arranged on the upper surface of the slider seat and used for accommodating the reciprocating movement of the rectangular cover cap, circular holes are formed in two side walls of the slider seat, the other end of the lock pin is a free end, and the free end penetrates through the circular holes and is exposed outside the slider seat. Therefore, after the slider body is integrally coated by the slider seat, the lock pins are exposed on the two side walls of the slider seat, so that when the slider body moves, the two side surfaces of the two driving inclined grooves are in contact with the surfaces of the two driving pieces, and the slider body can be forced; the two driving pieces simultaneously retract inwards or extend outwards, so that the two lock pins connected with the driving pieces synchronously retract inwards or extend outwards.

In summary, compared with the prior art, the utility model has the following advantages:

the utility model is provided with a linkage rod and a sliding lock piece connected with one end of the linkage rod; the trace is as drawing the piece, and the sliding lock piece has included both for sliding fit's slider body and slider seat, and the sliding lock piece still includes driving piece and the lockpin that one end and driving piece are connected and two axis mutually perpendicular that all move about setting in two drive chutes. When the linkage rod is pulled, the slider body moves along with the linkage rod, and the driving piece is connected with the lock pin which is limited in the slider seat, so that when the slider body moves, two side surfaces of the driving chute are in contact with the surface of the driving piece, the driving piece is forced to retract inwards, the lock pin connected with the driving piece is synchronously retracted inwards, and the unlocking function of the lock pin is completed.

The utility model adopts the inclined plane movement as the drive, and the whole body is in rigid sliding fit, thereby ensuring good sensitivity, synchronism and use durability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention with the slider seat hidden;

FIG. 3 is a schematic bottom view of the present invention;

fig. 4 is a schematic structural view of a slider body.

The labels in the figure are:

1, a linkage rod; 2, a sliding lock piece; 3, a sliding block body; 4, a sliding block seat; 41 opening slide ways; 5, mounting a part; 6 driving the chute; 7, transversely moving the groove; 8 driving part; 81 rectangular caps; 9 locking pin.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings to which:

example (b):

as shown in fig. 1 to 4, a locking assembly includes a linkage rod 1 and a sliding locking member 2 connected to one end of the linkage rod 1.

The sliding-locking piece 2 comprises a sliding block body 3 and a sliding block seat 4 which are in sliding fit;

the overall appearance of the slider body 3 is a cuboid, an installation part 5 for installing the linkage rod 1 is concavely arranged from the center of the upper surface of the slider body to one of the side surfaces, the linkage rod 1 is hinged with the installation part 5, driving chutes 6 are symmetrically arranged on the upper surface of the slider body 3 towards two sides by taking the installation part 5 as the center, the inclination directions of the two driving chutes 6 are that the two driving chutes tend to be away from each other towards one side of the installation linkage rod 1 and approach each other, transverse moving grooves 7 are arranged on two side surfaces adjacent to the side surface provided with the installation part 5 in the slider body 3, and the transverse moving grooves 7 on the same side are communicated with the driving chutes 6 on the same side;

the sliding locking piece 2 also comprises a driving piece 8 and a locking pin 9, wherein the driving piece 8 is movably arranged in the two driving chutes 6, one end of the locking pin is in threaded connection with the driving piece 8, and the two axes of the locking pin are mutually vertical;

the driving piece 8 is matched with the driving chute 6 in a sliding manner, the lower part of the driving piece 8 is integrally a cylinder, the diameter of the cylinder is matched with the width of the driving chute 6, the upper part of the driving piece 8 is provided with a rectangular cap 81, the side length of the rectangular cap 81 is larger than the width of the driving chute 6, and the rectangular cap 81 is exposed on the upper surface of the sliding block body 3;

as shown in fig. 1 and 3, the slider seat 4 sleeves the slider body 3, the slider seat 4 provides certain sliding space for the slider body 3, the slider seat 4 is the blind end towards one side of the linkage rod 1, this blind end is equipped with the through-hole that supplies the linkage rod 1 to pass, the slider body 3 can slide with the slider seat 4 relatively only along the axial of linkage rod 1, the upper surface of slider seat 4 is equipped with the opening slide 41 of two perpendicular linkage rod 1 axes, opening slide 41 is used for holding the reciprocating motion of rectangle block 81, two lateral walls at slider seat 4 all are equipped with the round hole, the other end of lockpin 9 is the free end, this free end passes this round hole and exposes in the slider seat 4 outsides.

The free end of the lock pin 9 has a taper gradually decreasing towards the outer end. The locking pin has a certain taper, so that the locking pin cannot be blocked when unlocked, and the taper can also play a role in overcoming deviation and automatically centering when locked.

The following describes the principle of action:

under normal state, the lock pins 9 on both sides are in an outward extending state, namely a locking state, and the lock pins 9 on both sides are retracted inwards to be in an unlocking state.

The interlocking rod 1 is used as a traction piece, the interlocking rod 1 is pulled to the far end, the slider body 3 moves along with the interlocking rod, the driving piece 8 in the slider body 3 is connected with the lock pin 9, and the lock pin 9 is limited in the slider seat 4, therefore, when the slider body 3 moves, two side surfaces of the driving chute 6 are in surface contact with the driving piece 8, and the lock pin 9 is limited in the slider seat 4 due to the fact that the driving chute 6 has an inclination, therefore, the driving piece 8 is forced to retract inwards under the driving of the driving chute 6, the lock pin 9 connected with the driving piece 8 retracts inwards synchronously, and the unlocking function of the lock pin 9 is completed.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims (9)

1. A locking assembly is characterized by comprising a linkage rod (1) and a sliding locking piece (2) connected with one end of the linkage rod (1); the sliding block piece (2) comprises a sliding block body (3) and a sliding block seat (4) which are in sliding fit, a driving chute (6) is arranged on the upper surface of the sliding block body (3), the two side surfaces of the sliding block body (3) are respectively provided with a transverse moving groove (7) and a transverse moving groove (7) on the same side, the transverse moving grooves (7) are communicated with the driving chute (6) on the same side, the sliding block piece (2) further comprises a driving piece (8) and a locking pin (9), the driving piece (8) and the one end of the driving piece (8) are movably arranged in the two driving chutes (6), and the locking pin is perpendicular to the axis of the driving piece (8).

2. The locking assembly as claimed in claim 1, wherein the slider body (3) is rectangular in overall shape, and a mounting portion (5) for mounting the linkage rod (1) is concavely arranged from the center of the upper surface to one of the side surfaces.

3. Locking assembly according to claim 2, characterized in that the upper surface of the slider body (3) is provided with driving ramps (6) symmetrically mirrored on both sides about the mounting portion (5).

4. Locking assembly according to claim 1, wherein the free end of the locking pin (9) has a tapering towards the outer end.

5. Locking assembly according to claim 1, wherein the actuating member (8) is a sliding fit within the drive chute (6), the lower part of the actuating member (8) being generally cylindrical with a diameter matching the width of the drive chute (6).

6. Locking assembly according to claim 5, characterized in that the upper part of the driving member (8) is a rectangular cap (81) with a side length larger than the slot width of the driving chute (6), the rectangular cap (81) being exposed on the upper surface of the slider body (3).

7. The locking assembly according to claim 1, wherein the slider seat (4) is sleeved outside the slider body (3), the slider seat (4) provides a certain sliding space for the slider body (3), and the slider seat (4) is a closed end at a side facing the linkage rod (1), and the closed end is provided with a through hole for the linkage rod (1) to pass through.

8. The locking assembly according to claim 6, wherein the slider body (3) can slide relative to the slider seat (4) only along the axial direction of the linkage (1), the upper surface of the slider seat (4) is provided with two open slideways (41) perpendicular to the axis of the linkage (1), and the open slideways (41) are used for accommodating the reciprocating movement of the rectangular cap (81).

9. Locking assembly according to claim 8, characterized in that both side walls of the slider seat (4) are provided with a circular hole, and the other end of the locking pin (9) is a free end which is exposed outside the slider seat (4) through the circular hole.

Images