Quick locking and reversing rotary handle

Abstract

The utility model discloses a kind of quick locking and reversing rotary handle, including connecting arm, the inner end of connecting arm is equipped with transmission shaft, the outer end of connecting arm is rotatably installed with handle;The end of transmission shaft insertion connecting arm is symmetrically equipped with positioning platform, the inner end of connecting arm is equipped with installation groove, sliding block is slidably installed in installation groove, the inner end surface of sliding block cooperates with the positioning platform of transmission shaft;Screw is inserted in sliding block, the inner end of screw is installed in the inside of connecting arm by thread, the outer end of screw is equipped with locking lever rod.The utility model can be conveniently turned the installation angle of rotary handle without using tool, simultaneously, the quick disassembly of handle can be realized.

Description

Technical Field

[0001] This utility model relates to a rotary handle that allows for quick locking and reversing, and belongs to the field of rotary handle technology. Background Technology

[0002] The increasing aging of society, stroke, spinal cord injury, and other factors have led to a decline or even complete loss of limb function, severely impacting quality of life. Rehabilitation therapy is an effective way to restore motor function. However, the traditional one-on-one rehabilitation approach involving physical therapists and patients has drawbacks such as high labor intensity and high treatment costs. Therefore, rehabilitation training equipment is an effective way to resolve this contradiction.

[0003] Patients with limb motor disorders such as cerebral palsy and hemiplegia can achieve rehabilitation through upper and lower limb movement training. Existing rehabilitation training equipment has the function of training both the upper and lower limbs. When training the lower limbs, the trainee needs to sit in front of the bicycle with both feet on the pedals. When training the upper limbs, there are two crank handles at the top of the rehabilitation training equipment, which the patient cranks to perform upper limb rehabilitation exercises. However, when training the lower limbs, the patient needs to hold the crank handles with both hands for support. Since the two crank handles are not on the same axis, it is uncomfortable to place both hands on the crank handles during lower limb training. It is necessary to adjust the installation angle of one of the crank handles to make the two crank handles on the same axis. In the current technology, the crank handles need to be disassembled with tools, the angle of the crank handles adjusted, and then reinstalled, which is quite cumbersome.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a rotary handle that allows for quick locking and reversing. The handle can be easily rotated to change its installation angle without the need for tools, and it also enables quick assembly and disassembly of the handle.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A rotary handle for quick locking and reversing includes a connecting arm, an inner end of which is fitted with a drive shaft, and an outer end of which is rotatably fitted with a handle.

[0008] A positioning platform is symmetrically provided at one end of the drive shaft that is inserted into the connecting arm. A mounting groove is provided at the inner end of the connecting arm. A sliding block is slidably installed in the mounting groove. The inner end face of the sliding block cooperates with the positioning platform of the drive shaft.

[0009] A screw is inserted through the sliding block, with the inner end of the screw threaded into the connecting arm and a locking lever installed on the outer end of the screw.

[0010] Furthermore, a countersunk hole is provided at the inner end of the sliding block, and a compression spring is installed inside the countersunk hole.

[0011] Furthermore, a mounting shaft is mounted on the outer end of the screw, and the locking lever is rotatably mounted on the mounting shaft.

[0012] Furthermore, a clearance groove is provided on one side of the insertion hole that mates with the drive shaft of the connecting arm. The clearance groove is a semi-circular groove, and a locating pin is provided radially at the end of the drive shaft. The locating pin mates with the horizontal sidewall inside the clearance groove.

[0013] Furthermore, the outer end of the connecting arm is rotatably connected to the rotating shaft via a bearing, and the outer end of the rotating shaft is provided with a circular boss, on which a handle is installed.

[0014] Furthermore, the inner end of the handle is provided with a mounting hole that mates with the circular boss, and a baffle is also installed on the inner end face of the handle. The main body of the baffle is an arc-shaped structure, and one end of the baffle is hinged to a hinge screw.

[0015] Furthermore, the inner end face of the handle is also provided with a positioning screw, which is used to limit the rotational position of the baffle.

[0016] Furthermore, the inner end face of the handle is provided with a positioning steel ball, and the corresponding position of the baffle is provided with a positioning hole, wherein the positioning steel ball cooperates with the positioning hole of the baffle.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0018] A positioning platform is symmetrically provided at one end of the drive shaft that inserts into the connecting arm. The inner end of the connecting arm is provided with a mounting groove, in which a sliding block is slidably installed. The inner end face of the sliding block cooperates with the positioning platform of the drive shaft. The locking lever presses the sliding block tightly, so that the inner end of the sliding block rests against the positioning platform of the drive shaft. When it is necessary to change the position of the handle, the locking lever is released, so that the sliding block is disengaged from the positioning platform of the drive shaft. The connecting arm is rotated 180 degrees around the drive shaft, and then the locking lever is used to lock the sliding block. This makes it easy to rotate the handle 180 degrees and lock it without completely disassembling the handle and the connecting arm.

[0019] After the circular boss is inserted into the mounting hole of the handle, rotate the baffle so that the baffle blocks the inner end face of the circular boss, fixing the handle on the rotating shaft. Rotating the baffle can separate the handle from the circular boss, making it easy to remove the handle for easy replacement or transportation.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a first-angle perspective view of the present invention;

[0022] Figure 2 This is a perspective view of the present invention from a second angle;

[0023] Figure 3 This is a top view of the present invention;

[0024] Figure 4 yes Figure 3 Sectional view along the middle AA;

[0025] Figure 5 This is a diagram illustrating the assembly of the handle and the baffle.

[0026] Figure 6 This is a schematic diagram of the handle's structure;

[0027] Figure 7 This is a schematic diagram of the assembly of the rotating shaft and the connecting arm.

[0028] In the diagram, 1-drive shaft, 101-positioning platform, 2-positioning pin, 3-connecting arm, 4-avoidance groove, 5-bearing, 6-sliding block, 7-countersunk hole, 8-screw, 9-locking lever, 10-rotating shaft, 11-circular boss, 12-handle, 13-mounting hole, 14-hinged screw, 15-baffle, 1501-positioning hole, 16-positioning screw, 17-positioning ball, 18-mounting shaft. Detailed Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0030] like Figure 1-3 As shown, this utility model provides a rotary handle for quick locking and reversing, including a connecting arm 3, a drive shaft 1 installed at the inner end of the connecting arm 3, and a handle 12 rotatably installed at the outer end of the connecting arm 3.

[0031] A positioning platform 101 is symmetrically provided at one end of the drive shaft 1 that is inserted into the connecting arm 3. The inner end of the connecting arm 3 is provided with a mounting groove, and a sliding block 6 is slidably installed in the mounting groove. The inner end face of the sliding block 6 cooperates with the positioning platform 101 of the drive shaft 1.

[0032] A screw 8 is inserted through the sliding block 6. The inner end of the screw 8 is threaded into the connecting arm 3. A locking lever 9 is installed on the outer end of the screw 8.

[0033] The locking lever 9 presses the sliding block 6, so that the inner end of the sliding block 6 abuts against the positioning platform 101 of the drive shaft 1, thus fixing the drive shaft 1 to the connecting arm 3. When it is necessary to change the position of the handle 12, the locking lever 9 is released, so that the sliding block 6 is disengaged from the positioning platform 101 of the drive shaft 1. The connecting arm 3 is rotated 180 degrees around the drive shaft 1, so that the positioning platform 101 on the other side of the drive shaft 1 is opposite to the inner end face of the sliding block 6. Then the locking lever 9 is used to lock the sliding block 6, so that the connecting arm 3 can easily drive the handle 12 to rotate 180 degrees and lock it without completely disassembling the handle and the connecting arm.

[0034] like Figure 4 A countersunk hole 7 is provided at the inner end of the sliding block 6, and a compression spring is installed in the countersunk hole 7. When the locking lever 9 is released, the compression spring pushes the sliding block 6 to slide outward, which facilitates the rotation of the connecting arm 3 and the drive shaft 1.

[0035] The outer end of the screw 8 is fitted with a mounting shaft 18, and the locking lever 9 is rotatably mounted on the mounting shaft 18.

[0036] The connecting arm 3 has a recessed groove 4 on one side of the insertion hole that mates with the drive shaft 1. The recessed groove 4 is a semi-circular groove. Figure 2 A locating pin 2 is radially provided at the end of the drive shaft 1, and the locating pin 2 cooperates with the horizontal sidewall inside the clearance trough 4. After the connecting arm 3 rotates 180 degrees, the locating pin 2 abuts against the horizontal sidewall inside the clearance trough 4, thereby limiting the rotation angle of the connecting arm 3.

[0037] The outer end of the connecting arm 3 is rotatably connected to the rotating shaft 10 via a bearing 5. The outer end of the rotating shaft 10 is provided with a circular boss 11, on which a handle 12 is mounted. Figure 7 .

[0038] like Figure 5 , Figure 6 The handle 12 has an inner end with a mounting hole 13 that mates with a circular boss 11. A baffle 15 is also mounted on the inner end face of the handle 12. The baffle 15 has a circular arc shape, and one end is hinged to a hinge screw 14, allowing it to be rotatably mounted on the inner end face of the handle 12. After the circular boss 11 is inserted into the mounting hole 13 of the handle 12, rotating the baffle 15 causes it to block the inner end face of the circular boss 11, fixing the handle 12 to the rotating shaft 10. Rotating the baffle 15 allows the handle 12 to be separated from the circular boss 11, making it easy to remove the handle 12 for replacement or transport.

[0039] The inner end face of the handle 12 is also provided with a positioning screw 16, which is used to limit the rotation position of the baffle 15.

[0040] like Figure 6 The inner end face of the handle 12 is provided with a positioning steel ball 17, and the corresponding position of the baffle 15 is provided with a positioning hole 1501. The positioning steel ball 17 cooperates with the positioning hole 1501 of the baffle 15. When the baffle 15 is rotated to the locking position, the positioning hole 1501 of the baffle 15 cooperates with the positioning steel ball 17 to fix the position of the baffle 15.

[0041] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A rotary handle for quick locking and reversing, characterized in that: It includes a connecting arm (3), the inner end of which is equipped with a drive shaft (1), and the outer end of which is rotatably equipped with a handle (12); A positioning platform (101) is symmetrically provided at one end of the drive shaft (1) inserted into the connecting arm (3). The inner end of the connecting arm (3) is provided with an installation groove. A sliding block (6) is slidably installed in the installation groove. The inner end face of the sliding block (6) cooperates with the positioning platform (101) of the drive shaft (1). A screw (8) is inserted through the sliding block (6). The inner end of the screw (8) is threaded into the connecting arm (3). A locking lever (9) is installed on the outer end of the screw (8).

2. A rotary handle for quick locking and reversing as described in claim 1, characterized in that: A countersunk hole (7) is provided at the inner end of the sliding block (6), and a compression spring is installed in the countersunk hole (7).

3. A rotary handle for quick locking and reversing as described in claim 1, characterized in that: The outer end of the screw (8) is fitted with a mounting shaft (18), and the locking lever (9) is rotatably mounted on the mounting shaft (18).

4. A rotary handle for quick locking and reversing as described in claim 1, characterized in that: The connecting arm (3) has a recessed groove (4) on one side of the insertion hole that mates with the drive shaft (1). The recessed groove (4) is a semi-circular groove. A positioning pin (2) is provided radially at the end of the drive shaft (1). The positioning pin (2) mates with the horizontal sidewall inside the recessed groove (4).

5. A rotary handle for quick locking and reversing as described in claim 1, characterized in that: The outer end of the connecting arm (3) is rotatably connected to the rotating shaft (10) via a bearing (5). The outer end of the rotating shaft (10) is provided with a circular boss (11), and a handle (12) is installed on the circular boss (11).

6. A rotary handle for quick locking and reversing as described in claim 1, characterized in that: The inner end of the handle (12) is provided with a mounting hole (13) that matches the circular boss (11). The inner end face of the handle (12) is also equipped with a baffle (15). The main body of the baffle (15) is an arc-shaped structure, and one end of the baffle (15) is hinged to the hinge screw (14).

7. A rotary handle for quick locking and reversing as described in claim 6, characterized in that: The inner end face of the handle (12) is also provided with a positioning screw (16), which is used to limit the rotation position of the baffle (15).

8. A rotary handle for quick locking and reversing as described in claim 7, characterized in that: The inner end face of the handle (12) is provided with a positioning steel ball (17), and the corresponding position of the baffle (15) is provided with a positioning hole (1501). The positioning steel ball (17) cooperates with the positioning hole (1501) of the baffle (15).

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