Adjustable support

Abstract

The utility model provides an adjustable support which comprises an upper body and a lower body which are connected in a clamped mode, a worm is arranged in the lower body, a worm gear meshed with the worm is arranged on the upper body, and according to the rotation ratio between the worm gear and the worm, the worm rotates by a circle to enable the worm gear to rotate by a corresponding angle, so that the upper body is driven to move by a corresponding angle. One end of the worm is connected with an adjusting hand wheel, a plurality of positioning grooves are formed in the adjusting hand wheel, positioning steel balls are arranged at the positions, corresponding to the adjusting hand wheel, in the lower body, and the positioning steel balls are used for being connected with the positioning grooves of the adjusting hand wheel in a clamped mode for positioning. Through mutual cooperation of the worm gear and the worm, according to the rotation ratio of the worm gear and the worm, the worm rotates by a circle to enable the worm gear to rotate by a corresponding angle, and accurate adjustment of the angle of the upper body is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of gun sight support technology, specifically relating to an adjustable support. Background Technology

[0002] A support bracket is a structural component that provides support, primarily used to support the object to which it is attached. In rifle sight brackets, most are fixed structures. Once the sight is fixed to the firearm, it is inconvenient to calibrate and adjust the sight. Furthermore, some sights have limited adjustment range and insufficient flexibility.

[0003] Chinese utility model patent CN215261418U discloses a gun sight bracket that is convenient for multi-angle adjustment. By manually rotating the handle, a threaded rod can be rotated, which in turn drives the lifting block to move up and down. The movement of the lifting block can drive the support plate to move, and the movement of the support plate can adjust the height of the fixed plate, thereby adjusting the height of the scope body. At the same time, by adjusting the height of the two support plates to create a height difference between them, the tilt angle of the fixed plate can be adjusted, thereby adjusting the angle of the scope body, which is convenient for calibration.

[0004] The aforementioned patent adjusts the angle of the scope body by adjusting the height of the two support plates to create a height difference, thereby adjusting the tilt angle of the fixed plate. However, the adjustment accuracy is low, and the user cannot obtain the specific value of the scope body angle adjustment by rotating the handle. Utility Model Content

[0005] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide an adjustable bracket, which, through the cooperation between the worm gear and the worm, according to the rotation ratio between the worm gear and the worm, the worm gear rotates one revolution and the worm gear rotates by a corresponding angle, thereby achieving precise adjustment of the angle of the upper body.

[0006] An adjustable bracket includes an upper body and a lower body that are interlocked. The lower body is equipped with a worm gear, and the upper body is provided with a worm wheel that meshes with the worm gear. According to the rotation ratio between the worm wheel and the worm gear, the worm gear rotates one revolution, causing the worm wheel to rotate by a corresponding angle, thereby driving the upper body to move by a corresponding angle.

[0007] Preferably, one end of the worm gear is connected to an adjusting handwheel, which has multiple positioning slots. A positioning steel ball is disposed inside the lower body at a position corresponding to the adjusting handwheel. The positioning steel ball is used to engage with the positioning slot of the adjusting handwheel for positioning.

[0008] Preferably, the lower body is also equipped with a positioning spring, one end of which is connected to the lower body and the other end is connected to a positioning steel ball. The positioning steel ball abuts against the adjusting handwheel through the elastic action of the positioning spring.

[0009] Preferably, the upper body and the lower body are connected by a dovetail groove, and the lower body is provided with a locking block controlled by a locking screw at the position corresponding to the dovetail groove. The locking block has a slot that matches the dovetail groove.

[0010] Preferably, a first sliding sleeve and a second sliding sleeve are respectively fitted onto both ends of the worm, and a first pressure ring and a second pressure ring are respectively provided between both ends of the worm and the lower body.

[0011] Preferably, the two ends of the upper body are connected to cover plates by cover plate screws at the positions corresponding to the worm gears, and the two cover plates are used to limit the left and right movement of the upper body.

[0012] Preferably, the upper body is U-shaped, and the upper body has a cover installed on the protrusions at both ends by cover screws, forming a circular cavity between the cover and the upper body.

[0013] Preferably, a clamping block is installed at the bottom of the lower body via clamping screws.

[0014] The beneficial effects of this utility model are: the adjustable bracket, through the cooperation between the worm gear and the worm, according to the rotation ratio between the worm gear and the worm, the worm gear rotates one revolution and the worm gear rotates by a corresponding angle, thereby achieving precise adjustment of the angle of the upper body.

[0015] Furthermore, by adjusting the handwheel to drive the worm gear to rotate, and by setting a positioning groove on the handwheel, combined with the action of the positioning steel ball and the positioning spring, the number of rotations of the worm gear can be sensed by the click sensation generated between the positioning steel ball and the positioning groove when the handwheel is rotated, thereby obtaining the angle at which the upper body moves the gun sight. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is the left view of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 2 Mid-section view AA;

[0020] Figure 4 This is the front view of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of this utility model. Figure 4 Middle section view CC.

[0022] The markings in the diagram are as follows: 1. Top cover; 2. Upper body; 201. Worm gear; 3. Cover plate; 4. Positioning spring; 5. Positioning steel ball; 6. Adjusting handwheel; 7. Pressure ring one; 8. Sliding sleeve one; 9. Lower body; 10. Clamping block screw; 11. Clamping block; 12. Worm; 13. Sliding sleeve two; 14. Pressure ring two; 15. Top cover screw; 16. Cover plate screw; 17. Locking screw; 18. Locking block; 19. Dovetail groove. Detailed Implementation

[0023] Example 1

[0024] like Figure 1 , Figure 3 As shown, an adjustable bracket includes an upper body 2 and a lower body 9. A worm gear 12 is disposed inside the lower body 9, and a worm wheel 201 adapted to the worm gear 12 is disposed on the upper body 2. The worm gear 12 meshes with the worm wheel 201. Rotating the worm gear 12 drives the worm wheel 201 to rotate, so that the position of the upper body 2 relative to the lower body 9 is adjustable. At this time, the upper body 2 moves along the rotation direction of the worm wheel 201.

[0025] Based on the rotation ratio between the worm gear 201 and the worm 12, one rotation of the worm 12 causes the worm gear 201 to rotate by a corresponding angle, thereby moving the upper body 2 by the corresponding angle. In this embodiment, the transmission ratio between the worm gear 201 and the worm 12 is 360:1, that is, for every 360 rotations of the worm, the worm gear rotates once; conversely, for every one rotation of the worm, the worm gear rotates only 1°, thus achieving fine adjustment.

[0026] In addition, such as Figure 1 , Figure 3 As shown, one end of the worm gear 12 is connected to an adjusting handwheel 6, allowing the user to rotate the worm gear 12 by adjusting the handwheel 6. The adjusting handwheel 6 has multiple positioning slots. Correspondingly, the lower body 9 has positioning steel balls 5 and positioning springs 4 positioned inside the lower body 9 at the locations corresponding to the adjusting handwheel 6. One end of the positioning spring 4 is connected to the lower body 9, and the other end is connected to the positioning steel ball 5. The positioning steel ball 5 abuts against the adjusting handwheel 6 through the elastic action of the positioning spring 4.

[0027] When the adjusting handwheel 6 is rotated, if the positioning steel ball 5 is engaged in the positioning groove of the adjusting handwheel 6, a clicking sensation will be produced, which makes it easier for the user to position the ball. In this embodiment, the adjusting handwheel 6 is provided with 6 positioning grooves, that is, each rotation of one groove is 1 / 6 of 1°, and each click rotates 1 / 6°, which is 10moa.

[0028] like Figure 3 As shown, two sliding sleeves 8 and 13 are respectively fitted onto both ends of the worm 12, and pressure rings 7 and 14 are respectively provided between both ends of the worm 12 and the lower body 9. The sliding sleeves 8, 13, 7, and 14 improve the rotational stability of the worm 12.

[0029] like Figure 1 , Figure 3 , Figure 4 As shown, the two ends of the upper body 2 are connected to cover plates 3 by cover plate screws 16 at the positions corresponding to the worm gear 201. The two cover plates 3 are used to limit the upper body 2 to the left and right to prevent the upper body 2 from falling off.

[0030] like Figure 1 , Figure 2 As shown, the upper body 2 is U-shaped, and the upper cover 1 is installed on the protrusions at both ends of the upper body 2 via upper cover screws 15. A circular cavity is formed between the upper cover 1 and the upper body 2 for mounting the gun sight. Figure 3 , Figure 5 As shown, a clamping block 11 is installed at the bottom of the lower body 9 via a clamping block screw 10 for locking the gun body.

[0031] Example 2

[0032] like Figure 5 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, except that: in this embodiment, the upper body 2 and the lower body 9 are engaged by a dovetail groove 19. A locking block 18, controlled by a locking screw 17, is positioned on the lower body 9 corresponding to the dovetail groove 19. The locking block 18 has a slot that matches the dovetail groove 19. The locking screw 17 is rotated to adjust the position of the locking block 18. When the position of the upper body 2 needs adjustment, the locking screw 17 is rotated to move the locking block 18 away from the dovetail groove 19. After the position of the upper body 2 is adjusted, the locking screw 17 is rotated to move the locking block 18 closer to the dovetail groove 19 and engage, thus achieving a locking engagement.

[0033] Working principle: When using this adjustable bracket, the gun sight is installed through the cooperation between the upper cover 1 and the upper body 2. When the gun sight angle needs to be adjusted, the locking screw 17 is turned to move the locking block 18 away from the dovetail groove 19. Then, the adjusting handwheel 6 is turned to drive the worm gear 12 to rotate. Utilizing the meshing between the worm gear 12 and the worm wheel 201, when the worm gear 12 rotates, the worm wheel 201 rotates accordingly, thereby driving the gun sight on the upper body 2 to move along the rotation direction of the worm wheel 201, thus realizing the angle adjustment of the upper body 2.

[0034] Since the rotation ratio between the worm gear 201 and the worm 12 is 360:1, and the adjusting handwheel 6 is equipped with 6 positioning slots, the user can calculate the rotation angle of the worm gear 201 by the engagement of the positioning steel ball 5 with the positioning slot when rotating the adjusting handwheel 6, thereby achieving precise adjustment of the movement of the upper body 2.

[0035] After the position of the upper body 2 is adjusted, rotate the locking screw 17 to bring the locking block 18 close to the dovetail groove 19 and achieve locking.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable bracket, characterized in that, The device includes an upper body (2) and a lower body (9) that are interlocked. The lower body (9) is equipped with a worm gear (12), and the upper body (2) is provided with a worm wheel (201) that meshes with the worm gear (12). According to the rotation ratio between the worm wheel (201) and the worm gear (12), the worm gear (12) rotates one revolution, causing the worm wheel (201) to rotate by a corresponding angle, thereby driving the upper body (2) to move by a corresponding angle.

2. The adjustable bracket according to claim 1, characterized in that, One end of the worm (12) is connected to an adjusting handwheel (6), which has multiple positioning grooves. The lower body (9) is equipped with positioning steel balls (5) at the position corresponding to the adjusting handwheel (6). The positioning steel balls (5) are used to engage with the positioning grooves of the adjusting handwheel (6) for positioning.

3. The adjustable bracket according to claim 2, characterized in that, The lower body (9) is also equipped with a positioning spring (4). One end of the positioning spring (4) is connected to the lower body (9), and the other end is connected to the positioning steel ball (5). The positioning steel ball (5) abuts against the adjusting handwheel (6) through the elastic action of the positioning spring (4).

4. The adjustable bracket according to claim 1, characterized in that, The upper body (2) and the lower body (9) are connected by a dovetail groove (19). The lower body (9) is provided with a locking block (18) controlled by a locking screw (17) at the position corresponding to the dovetail groove (19). The locking block (18) has a slot that matches the dovetail groove (19).

5. The adjustable bracket according to claim 1, characterized in that, The two ends of the worm (12) are respectively fitted with a first sliding sleeve (8) and a second sliding sleeve (13), and a first pressure ring (7) and a second pressure ring (14) are respectively provided between the two ends of the worm (12) and the lower body (9).

6. The adjustable bracket according to claim 1, characterized in that, The upper body (2) has cover plates (3) connected to the positions of the worm gear (201) at both ends by cover plate screws (16). The two cover plates (3) are used to limit the upper body (2) to the left and right.

7. The adjustable bracket according to claim 1, characterized in that, The upper body (2) is configured as a U-shape, and the upper cover (1) is installed on the protrusions at both ends of the upper body (2) by upper cover screws (15). A circular cavity is formed between the upper cover (1) and the upper body (2).

8. The adjustable bracket according to claim 1, characterized in that, The bottom of the lower body (9) is fitted with a clamp (11) by a clamp screw (10).

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