Buckle for backrest of vehicle for disability

Abstract

The utility model is applicable to the technical field of medical equipment, and provides a backrest buckle for a disability vehicle, which comprises a connecting plate and a supporting plate, a locking mechanism is detachably and fixedly mounted between the connecting plate and the supporting plate, the locking mechanism is provided with a locking plate connected with the supporting plate and a locking piece connected with the connecting plate, and the locking plate is fixedly connected with the supporting plate. According to the device, through the arrangement of movable blocks (a poke rod and a locking rod), when the locking column is located in the locking hole, the locking rod is rotated to one side of the locking hole and abuts against the outer wall of the locking column, the locking column is limited and prevented from being separated from the plate body, and then fixing of the connecting plate and the supporting plate can be completed; on the contrary, when the locking rod loses the limiting of the locking column, the locking column can be taken out from the locking hole, the disassembly of the connecting plate and the supporting plate is completed, the operation mode is simple and convenient, and the preparation and maintenance cost is also effectively controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment especially relates to a disabled car backrest buckle. BACKGROUND

[0002] Wheelchair is the important tool of rehabilitation, it is not only the walking aid of the limb disabled and the person who is inconvenient to move, more important is to make them to carry out body exercise and participate in social activities by means of wheelchair, wheelchair is generally composed of wheelchair frame, direction wheel, brake device and seat back, the existing wheelchair is generally set as detachable structure between seat back and wheelchair frame for pursuing convenience.

[0003] In the prior art, the design of the backrest lock is often too complex, involving many parts and mechanical connections, which not only increases the manufacturing cost, but also makes the maintenance and repair process more difficult, which means that once a part fails or is damaged, it will be very difficult and time-consuming to replace, and at the same time, the cost and difficulty of maintenance are increased. SUMMARY

[0004] The utility model provides a disabled car backrest buckle, aims at solving the technical problem mentioned in the above background art.

[0005] The utility model is such realization, a disabled car backrest buckle, include: connecting plate spare and support plate spare, the connecting plate spare detachable fixed mounting in wheelchair main frame, and support plate spare and wheelchair seat back movable connection, detachable fixed mounting has locking mechanism between connecting plate spare and support plate spare, locking mechanism has: and support plate spare is connected locking plate, and with connecting plate spare is connected locking spare, locking plate and locking spare detachable connection, support plate spare has backrest support, and locking plate and backrest support fixed connection, this scheme, the connecting plate spare and fixed beam on wheelchair main frame are connected in the device, and support plate spare and wheelchair seat back are connected, when needing to disassemble, the connecting plate spare and support plate spare are split using locking mechanism.

[0006] The bottom of the connecting plate is fixedly provided with a plate body, two locking holes are formed in the plate body, and a movable column is rotatably connected to the plate body between the two locking holes. An active block is arranged on the outer wall of the movable column, a mounting plate is fixedly connected to the first clamping plate, locking columns are arranged at the two ends of the mounting plate, and in the actual assembly process, the two locking columns are inserted into the two corresponding locking holes, and the limiting rings at the two ends of the locking columns and the annular seats are located on the two sides of the plate body. After assembly is completed, the active block is rotated, the actuating rod on the active block is attached to the side wall of the plate body, the locking rod is moved to one side of one of the locking holes and abuts against the outer wall of the locking column inside the locking hole, the locking column is limited (to prevent it from being separated from the locking hole), the locking of the locking plate and the locking piece is completed, and vice versa. When disassembly is required, the active block is rotated, the locking rod is rotated away from the locking hole, and then the locking column can be taken out.

[0007] It should be explained that the active block (actuating rod, locking rod) is arranged in the device, the locking rod is rotated to one side of the locking hole and abuts against the outer wall of the locking column when the locking column is in the locking hole, the locking column is limited to prevent it from being separated from the plate body, the fixing of the connecting plate and the supporting plate is completed, vice versa. When the locking rod loses the limitation of the locking column, the locking column can be taken out from the locking hole, the disassembly of the connecting plate and the supporting plate is completed, the operation mode is simple and convenient, and the preparation and maintenance cost is effectively controlled.

[0008] Preferably, the backrest support includes: first and second connecting parts arranged at an angle, the first connecting part is obliquely arranged above the second connecting part and fixedly connected between adjacent end portions, the second connecting part is fixedly connected with the locking plate, and two strip-shaped grooves are symmetrically formed in the first connecting part. In this scheme, in actual use, the second connecting plate is horizontally arranged, the first connecting plate is obliquely arranged above the second connecting plate, the seat back of the wheelchair is attached to the inclined surface of the first connecting part, and a fastening bolt fixing piece is slidably arranged in each strip-shaped groove. The first connecting part and the wheelchair seat back are stably fixed by the fastening bolt fixing piece.

[0009] Preferably, the connecting plate member comprises: oppositely arranged first clamping plates and second clamping plates, first arc-shaped grooves and second arc-shaped grooves are respectively arranged on the outer walls of the first clamping plates and the second clamping plates, when the first clamping plates and the second clamping plates abut, the first arc-shaped grooves and the second arc-shaped grooves are clamped on the outer sides of the fixed beams of the wheelchair main frames, the outer walls of the first clamping plates away from the second clamping plates are further provided with accommodating grooves, the accommodating grooves accommodate connecting blocks, two threaded holes are symmetrically arranged on the connecting blocks, first through holes and second through holes are arranged on the first clamping plates and the second clamping plates corresponding to the two threaded holes, and locking bolts are arranged, threaded sections of the locking bolts are sequentially inserted through the second through holes, the first through holes, and then are threadedly connected in the threaded holes; in this scheme, when the connecting plate member is assembled, the first clamping plates and the second clamping plates are first separated, then the first clamping plates and the second clamping plates are respectively placed on the two sides of the fixed beams of the clamped and fixed wheelchair main frames, the first clamping plates and the second clamping plates are clamped and attached on the two sides of the fixed beams through the first arc-shaped grooves and the second arc-shaped grooves, the connecting blocks are then placed in the accommodating grooves, so that the threaded holes on the connecting blocks are aligned with the corresponding first through holes (the corresponding first through holes and the second through holes on the first clamping plates and the second clamping plates are aligned), then the threaded sections of the locking bolts are inserted from the second through holes, threaded connection is performed in the threaded holes after the threaded sections are inserted through the first through holes (the nuts of the locking bolts abut against the outer walls of the second clamping plates away from the first clamping plates), so that the connection and fixation of the first clamping plates and the second clamping plates are completed, and the fixation and assembly of the connecting plate member are completed through the first arc-shaped grooves and the second arc-shaped grooves.

[0010] Preferably, the locking plate comprises: a plate body, which is fixedly connected to the bottom of the second connecting portion in parallel, and two locking holes are further arranged on the plate body, and a locking member is rotatably connected to the plate body between the two locking holes, the locking member is located on one side of the plate body, and the locking member has: a movable column rotatably connected to the plate body, a movable block fixedly connected to the outer wall of the movable column, and a locking rod and a pulling rod arranged at an angle and fixedly connected to the outer side wall of the movable column, when the pulling rod abuts against the side wall of the plate member, the locking rod moves into one of the locking holes; in this scheme, in the device, the two locking holes are on the same horizontal line, and the movable block is rotatably connected between the two locking holes, for example, Figure 4As shown, the plate body side wall below the left locking hole is provided with a let-in slot, and the let-in slot can accommodate a movable block (locking rod). When the locking rod is in the let-in slot and abuts against the plate body side edge, it cannot shield the left locking hole. At this time, the locking column can be easily taken out of the locking hole, and at this time, the lever does not abut against the plate body side edge. When the lever rotates away from the left locking hole, it will abut against the plate body side edge, and at this time, the locking rod will move to one side of the left locking hole, thereby limiting the locking column in the locking hole to prevent it from being taken out of the locking hole.

[0011] Preferably, the locking member comprises: a mounting plate fixedly installed on the first clamping plate, both ends of the mounting plate extend to the outside of the first clamping plate, and an annular seat is fixedly installed on the top wall of each end, and a locking column is vertically fixed on the annular seat, and a limiting ring parallel to the annular seat is fixedly installed on the top wall of the locking column. In this scheme, the mounting plate is fixedly installed on the outer wall of the first clamping plate away from the second clamping plate, the mounting direction of the mounting plate is perpendicular to the first clamping plate, and both ends of the mounting plate extend to the outside of the first clamping plate.

[0012] It should be explained that the height of the locking column is greater than the height of the locking hole (the thickness of the plate), which is to facilitate the stable insertion of the locking column into the locking hole. The diameters of the fiber ring and the annular seat are both greater than the diameter of the locking column, and also greater than the diameter of the locking hole, which is to avoid the locking column from being taken out of the locking hole.

[0013] Compared with the prior art, the utility model discloses a wheelchair backrest buckle:

[0014] 1. In the device, the movable block (lever, locking rod) is arranged, when the locking column is in the locking hole, the locking rod is rotated to one side of the locking hole and abuts against the outer wall of the locking column, the locking column is limited, and the connecting plate and the supporting plate are fixed. When the locking rod loses the limitation of the locking column, the locking column can be taken out of the locking hole, the connecting plate and the supporting plate are disassembled, the operation mode is simple and convenient, and the preparation and maintenance cost are effectively controlled. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the utility model;

[0016] Figure 2 It is another perspective schematic view of the utility model;

[0017] Figure 3 It is a schematic view of the connecting plate in the utility model;

[0018] Figure 4It is the schematic view of the support plate piece in the utility model;

[0019] Figure 5 It is the schematic view of the movable block in the utility model;

[0020] In the drawing,

[0021] 1, connecting plate piece;11, first clamping plate;111, first arc-shaped groove;12, second clamping plate;121, second arc-shaped groove;13, accommodating groove;14, connecting block;141, threaded hole;

[0022] 2, support plate piece;21, backrest support;211, first connecting part;212, second connecting part;213, strip-shaped groove;

[0023] 3, locking mechanism;31, locking plate;311, plate body;312, locking hole;313, movable column;314, push rod;315, locking rod;32, locking piece;321, mounting plate;322, annular seat;323, locking column;324, limiting ring. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0025] The components of the utility model embodiment generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0026] Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0027] In the description of the utility model, it is necessary to explain that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it is necessary to explain that, unless there are definite provisions and limitations, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0029] Please refer to Figures 1-5 The utility model provides a technical scheme: a disabled car backrest buckle, it includes: connecting plate piece 1 and support plate piece 2, connecting plate piece 1 detachable fixed mounting is installed on the wheelchair main frame, and support plate piece 2 and wheelchair seat back movable connection, detachable fixed mounting has locking mechanism 3 between connecting plate piece 1 and support plate piece 2, locking mechanism 3 has: and the locking plate 31 of support plate piece 2 is connected, and the locking piece 32 of connecting plate piece 1 is connected, locking plate 31 and locking piece 32 detachable connection, support plate piece 2 has backrest support 21, and locking plate 31 and backrest support 21 fixedly connected.

[0030] Further, backrest support 21 includes: first connecting part 211 and second connecting part 212 arranged at an angle, first connecting part 211 is obliquely arranged above second connecting part 212, and is fixedly connected between adjacent end portions, second connecting part 212 is fixedly connected with locking plate 31, and two strip grooves 213 are symmetrically formed on first connecting part 211.

[0031] Specifically, the first connecting part 211 and the second connecting part 212 in the device are integrally formed, which can effectively enhance the structural strength of the backrest support 21, so as to ensure that it will not be broken or damaged during use.

[0032] Further, connecting plate piece 1 includes: first clamping plate 11 and second clamping plate 12 arranged opposite to each other, first arc-shaped groove 111 and second arc-shaped groove 121 are respectively formed on the outer walls of the first clamping plate 11 and the second clamping plate 12 close to each other, when the first clamping plate 11 and the second clamping plate 12 abut, the first arc-shaped groove 111 and the second arc-shaped groove 121 are clamped on the outer side of the fixed beam of the wheelchair main frame, a receiving groove 13 is further formed on the outer wall of the first clamping plate 11 away from the second clamping plate 12, the receiving groove 13 contains a connecting block 14, two threaded holes 141 are symmetrically formed on the connecting block 14, a first through hole and a second through hole are formed on the first clamping plate 11 and the second clamping plate 12 corresponding to the two threaded holes 141, and a locking bolt is provided, the threaded section of the locking bolt is sequentially threaded through the second through hole, the first through hole and then is threadedly connected in the threaded hole 141.

[0033] Further, the locking plate 31 comprises a plate body 311 fixedly connected to the bottom of the second connecting part 212 in parallel, and two locking holes 312 are formed in the plate body 311, and a locking piece is rotatably connected to the plate body 311 between the two locking holes 312, and the locking piece is located on one side of the plate body 311, and the locking piece comprises a movable column 313 rotatably connected to the plate body 311, a movable block is fixedly connected to the outer wall of the movable column 313, the movable block comprises a pushing rod 314 and a locking rod 315, the pushing rod 314 and the locking rod 315 are arranged at an angle, and adjacent end portions are fixedly connected to the outer side wall of the movable column 313, and when the pushing rod 314 abuts against the side wall of the plate body 311, the locking rod 315 moves into one of the locking holes 312.

[0034] Further, the locking piece 32 comprises an installation plate 321 fixedly installed on the first clamping plate 11, both ends of the installation plate 321 extend to the outer side of the first clamping plate 11, and annular seats 322 are fixedly installed on the top walls of the two ends, locking columns 323 are fixedly connected to the annular seats 322 in a vertical manner, and limiting rings 324 parallel to the annular seats 322 are fixedly installed on the top walls of the locking columns 323.

[0035] Specifically, two first connecting holes are symmetrically formed in the installation plate 321, a fastening bolt penetrates through the first connecting holes, and second connecting holes are formed in the first clamping plate 11 corresponding to the two first connecting holes, the two second connecting holes form a group, a plurality of groups of second connecting holes are equidistantly formed on the first clamping plate 11 along the extension direction of the first clamping plate 11, and an inner thread is arranged in each second connecting hole and matched with a threaded section of the fastening bolt.

[0036] During assembly, the installation position of the installation plate 321 can be adjusted according to actual needs, and at the same time, the two first connecting holes and the two second connecting holes corresponding to a group are aligned, then the threaded end of the fastening bolt is screwed into the inner threads in the first connecting holes and the second connecting holes, so that the assembly of the installation plate 321 is completed.

[0037] It should be noted that a first circular hole is formed at the center of the limiting ring 324, a columnar groove is formed in the top wall of the locking column 323 corresponding to the first circular hole, a second circular hole concentric with the first circular hole is formed in the annular seat 322 corresponding to the columnar groove, and an inner thread is arranged on the inner wall of the second circular hole, and the threaded section of the fastening bolt is screwed into the second circular hole after penetrating through the first circular hole and the columnar groove in sequence, so that the connection and fixation of the limiting ring 324, the locking column 323 and the annular seat 322 are completed.

[0038] The working principle and use process of the utility model are as follows:

[0039] In the device, the connecting plate 1 is fixedly installed on the fixed beam of the wheelchair main frame, and the wheelchair seat back is fixedly installed on the backrest support 21.

[0040] In the process of assembling the locking mechanism 3, first rotate the movable column 313, so that the side of the push rod 314 is away from the side of the plate body 311, and the side of the locking rod 315 is in contact with the side of the plate body 311, and then the plate body 311 is attached to the mounting plate 321, and the two locking columns 323 are respectively inserted into the two locking holes 312, and then the movable column 313 is rotated, so that the locking rod 315 is located on one side of one of the locking holes 312 and in contact with the side of the locking column 323, and the locking column 323 is limited, and the locking column 323 is limited by the annular seat 322 and the limiting ring 324, so that the plate body 311 and the mounting plate 321 are prevented from being separated.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wheelchair backrest buckle for disabled persons, characterized by: The utility model relates to a wheelchair backrest locking device, including: Connecting plate spare (1) and support plate spare (2); The connecting plate spare (1) is detachably fixed on the wheelchair main frame, and the support plate spare (2) is movably connected with the wheelchair seat backrest; Detachable fixing installation has locking mechanism (3) between the connecting plate spare (1) and the support plate spare (2), and the locking mechanism (3) has: Locking plate (31) connected with the support plate spare (2) and locking piece (32) connected with the connecting plate spare (1), and the locking plate (31) and the locking piece (32) are detachably connected; The support plate spare (2) has a backrest support (21), and the locking plate (31) and the backrest support (21) are fixedly connected.

2. The wheelchair backrest buckle of claim 1, wherein: The backrest support (21) comprises: The first connecting part (211) and the second connecting part (212) are arranged at an angle; The first connecting part (211) is obliquely arranged above the second connecting part (212), and the adjacent end portions are fixedly connected, the second connecting part (212) is fixedly connected with the locking plate (31), and two strip-shaped grooves (213) are symmetrically formed on the first connecting part (211).

3. The wheelchair backrest buckle of claim 1, wherein: The connecting plate spare (1) comprises: The first clamping plate (11) and the second clamping plate (12) are arranged opposite to each other; First arc-shaped grooves (111) and second arc-shaped grooves (121) are respectively formed on the outer walls of the first clamping plate (11) and the second clamping plate (12) close to each other; When the first clamping plate (11) and the second clamping plate (12) abut against each other, the first arc-shaped grooves (111) and the second arc-shaped grooves (121) are clamped on the outer side of the fixed beam of the wheelchair main frame; A receiving groove (13) is further formed on the outer wall of the first clamping plate (11) away from the second clamping plate (12), the receiving groove (13) contains a connecting block (14), two threaded holes (141) are symmetrically formed on the connecting block (14), and a first through hole and a second through hole are formed on the first clamping plate (11) and the second clamping plate (12) corresponding to the two threaded holes (141); A locking bolt is provided, and the threaded section of the locking bolt penetrates the second through hole, the first through hole and the threaded hole (141) in sequence and is threadedly connected in the threaded hole (141). The locking plate (31) comprises:

4. The wheelchair backrest buckle of claim 2, wherein: A plate body (311) is fixedly connected to the bottom of the second connecting part (212) in parallel, two locking holes (312) are further formed on the plate body (311), and a locking member is rotatably connected to the plate body (311) between the two locking holes (312), and the locking member is located on one side of the plate body (311); The locking member comprises: An active column (313) is rotatably connected to the plate body (311), an active block is fixedly connected to the outer wall of the active column (313), and the active block comprises a pushing rod (314) and a locking rod (315); The pushing rod (314) and the locking rod (315) are arranged at an angle, and the adjacent end portions are fixedly connected to the outer side wall of the active column (313). ​ When the toggle lever (314) is attached to the side wall of the plate body (311), the locking lever (315) is moved into one of the locking holes (312).

5. The wheelchair backrest buckle of claim 3, wherein: The locking member (32) comprises: A mounting plate (321) fixedly mounted on the first clamping plate (11), both ends of the mounting plate (321) extending to the outside of the first clamping plate (11), and an annular seat (322) fixedly mounted on the top wall of each end; A locking column (323) fixedly mounted on the annular seat (322) and vertically standing, and a limiting ring (324) fixedly mounted on the top wall of the locking column (323) and parallel to the annular seat (322).

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