A right angle prism clamping and fixing device

Abstract

The utility model discloses a right-angle prism clamping and fixing device, comprising a base, fixed blocks welded on both sides of the upper end of the base, a transmission cavity opened inside the base, the inside of the transmission cavity is rotatably connected to a double-threaded transmission rod, and the outer sides of the double-threaded transmission rod are threadedly connected to moving blocks, the upper ends of the moving blocks are extended to the outside of the transmission cavity, and the moving blocks are slidably matched with the transmission cavity, clamping plates are arranged on both sides above the base, and the clamping plates are connected to one end of the moving block located outside the transmission cavity, and a second guide rod is arranged between the fixed blocks, two second guide rods are arranged, and the second guide rods are welded and fixed to the fixed blocks. The clamping force of the clamping plates on both sides of the right-angle prism clamping and fixing device on the right-angle prism is evenly distributed, thereby avoiding damage or position displacement of the right-angle prism that may be caused by uneven clamping force.

Description

Technical Field

[0001] The utility model relates to the technical field of right-angle prisms, in particular to a right-angle prism clamping and fixing device. Background Art

[0002] A right-angle prism is a transparent object surrounded by two planes that intersect but are not parallel to each other. It is mainly used to turn the light path or deflect the image formed by the optical system by 90°. Its imaging method can be consistent left and right but upside down, or inconsistent left and right but consistent up and down, depending on the orientation of the prism. The right-angle prism can also be used for applications such as image combination and beam deviation. The processing of right-angle prisms requires high precision and stability. The clamping device can ensure that the right-angle prism remains fixed during the processing process to avoid processing errors caused by vibration or movement.

[0003] The existing Chinese patent with announcement number CN220428137U discloses a right-angle prism clamping and fixing device, including a connecting plate, the upper surface of which is fixedly connected to a fixing plate, the right side surface of which is fixedly inlaid with two sliding cylinders, the inner wall of each sliding cylinder is slidably connected to a sliding rod, and the right ends of the two sliding rods are commonly fixedly connected to a movable plate.

[0004] Although the above scheme can clamp and fix the right-angle prism, the device can only drive one of the push plates to fix it through the crank when clamping and fixing, which will cause the clamping plates on both sides to be inconsistent in moving speed and force. The right-angle prism may tilt or rotate slightly during the clamping process, resulting in uneven force and affecting the clamping and fixing effect. Therefore, it does not meet the existing needs. In this regard, we propose a right-angle prism clamping and fixing device. Utility Model Content

[0005] The utility model aims to provide a right-angle prism clamping and fixing device to solve the problem that the right-angle prism clamping and fixing device proposed in the above background technology is subjected to uneven force on both sides during clamping and fixing, which affects the clamping effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a right-angle prism clamping and fixing device, comprising a base, and fixing blocks are welded on both sides of the upper end of the base;

[0007] It also includes a transmission cavity, which is opened inside the base, the inside of the transmission cavity is rotatably connected to a double-threaded transmission rod, and the outer sides of the double-threaded transmission rod are threadedly connected with moving blocks, the upper ends of the moving blocks are extended to the outside of the transmission cavity, and the moving blocks are slidably matched with the transmission cavity, and clamping plates are provided on both sides above the base, and the clamping plates are connected to one end of the moving block located outside the transmission cavity;

[0008] It also includes a second guide rod, which is arranged between the fixed blocks. There are two second guide rods, and the second guide rods are welded and fixed to the fixed blocks. The second guide rods all pass through the clamping plate, and the second guide rods all slide in cooperation with the clamping plate.

[0009] Preferably, a buffer spring is sleeved on the outside of the second guide rod, and both ends of the buffer spring are connected to the clamping plate.

[0010] Preferably, first guide rods are welded to the front and rear sides of the transmission cavity, the first guide rods pass through the moving blocks, and the first guide rods are slidably matched with the moving blocks.

[0011] Preferably, a rotating shaft is provided at the movable end of the double-threaded transmission rod, one end of the rotating shaft extends to the outside of the transmission cavity, and the rotating shaft rotates with the transmission cavity, and a knob is installed at one end of the rotating shaft located outside the transmission cavity.

[0012] Preferably, a protective cover is provided on the outside of the knob, and the upper end of the inner side of the protective cover is rotatably connected to the base, and the lower end of the inner side of the protective cover and one side of the base are both adhered and fixed with a magnetic iron sheet.

[0013] Preferably, rollers are installed on the front and rear sides of the lower end of the clamping plate, and guide grooves are opened on the front and rear sides of the upper end of the base, and the guide grooves are adapted to the rollers.

[0014] Preferably, a rubber pad is bonded and fixed to the inner side of the clamping plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model opens a transmission cavity inside the base, places the right-angle prism on the upper end of the base and then turns the knob, the knob drives the rotating shaft to rotate the double-threaded transmission rod synchronously, and the double-threaded transmission rod drives the two moving blocks to move synchronously, the two moving blocks move in opposite or opposite horizontal straight lines, the two moving blocks move towards each other, and can drive the clamping plate to clamp and fix the right-angle prism in the middle, because the two moving blocks are synchronously and symmetrically driven by the double-threaded transmission rod, the clamping force of the clamping plates on the two sides on the right-angle prism is evenly distributed, thereby avoiding damage or position displacement of the right-angle prism caused by uneven clamping force.

[0017] The utility model provides a second guide rod between the two fixing blocks. When the two clamping plates move toward each other, they will be guided by the second guide rod, thereby avoiding deviation during clamping and ensuring the clamping effect of the right-angle prism. At the same time, when the two clamping plates move toward each other, they will gradually squeeze the buffer spring. When the buffer spring is squeezed, it will generate a certain reverse force to resist the clamping plates in the opposite direction. This resistance force can play a role of buffering and adjustment in the process of the clamping plates continuing to move. The clamping plates will not immediately clamp the right-angle prism with a rigid force, but will first perform a certain buffering through the elasticity of the buffer spring. In this way, even if the operator uses too much force when turning the knob, it will not immediately cause an excessive clamping force on the right-angle prism, thereby avoiding possible damage to the right-angle prism when it is clamped and fixed.

[0018] The utility model has rollers installed on the front and rear sides of the lower end of the clamping plate, and guide grooves are opened on the front and rear sides of the upper end of the base. When the clamping plate moves, the rollers roll inside the guide grooves. The guiding effect of the guide grooves not only ensures the linearity of the clamping plate during movement, but also avoids directional deviation due to improper operation or mechanical errors. This design greatly improves the movement accuracy and stability of the clamping plate, thereby ensuring the safety and accuracy of the right-angle prism during the clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic top view of the overall structure of the utility model;

[0020] Figure 2 It is a front view schematic diagram of the internal structure of the utility model;

[0021] Figure 3 It is a side view schematic diagram of the internal structure of the utility model;

[0022] Figure 4 For the utility model Figure 2 A partial enlarged view of area A.

[0023] In the figure: 1. base; 2. transmission chamber; 3. double-threaded transmission rod; 4. rotating shaft; 5. knob; 6. protective cover; 7. moving block; 8. magnetic iron sheet; 9. first guide rod; 10. clamping plate; 11. rubber pad; 12. second guide rod; 13. buffer spring; 14. roller; 15. guide groove; 16. fixing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides a technical solution: a right angle prism clamping and fixing device, comprising a base 1, and fixing blocks 16 are welded on both sides of the upper end of the base 1;

[0026] It also includes a transmission chamber 2, which is opened inside the base 1, and the inside of the transmission chamber 2 is rotatably connected to a double-threaded transmission rod 3, and the outer sides of the double-threaded transmission rod 3 are threadedly connected with moving blocks 7, and the upper ends of the moving blocks 7 are extended to the outside of the transmission chamber 2, and the moving blocks 7 are slidably matched with the transmission chamber 2, and clamping plates 10 are provided on both sides above the base 1, and the clamping plates 10 are connected to one end of the moving block 7 located outside the transmission chamber 2;

[0027] It also includes a second guide rod 12, which is arranged between the fixed blocks 16. Two second guide rods 12 are arranged, and the second guide rods 12 are welded and fixed to the fixed blocks 16. The second guide rods 12 all pass through the clamping plate 10, and the second guide rods 12 all slide in cooperation with the clamping plate 10.

[0028] When in use, the right-angle prism is placed on the base 1, and the double-threaded transmission rod 3 is driven by turning the knob 5, so that the two moving blocks 7 move toward each other, driving the clamping plate 10 to evenly clamp the right-angle prism to avoid damage or position displacement. During the clamping process, the roller 14 slides in the guide groove 15 to ensure linearity. At the same time, the second guide rod 12 provides additional guidance, and the buffer spring 13 adjusts the clamping force to prevent excessive force from damaging the prism. When not in use, the magnetic iron sheet 8 makes the protective cover 6 fit with the base 1, and the protection knob 5 avoids accidental touch, ensuring stable clamping and protection of the right-angle prism.

[0029] See also Figure 1 and Figure 2 The second guide rod 12 is sleeved with a buffer spring 13 on its exterior, and both ends of the buffer spring 13 are connected to the clamping plate 10. When the clamping plates 10 move toward each other to clamp the right-angle prism, the buffer spring 13 can absorb and adjust the clamping force to prevent the right-angle prism from being damaged due to excessive clamping force, while maintaining the stability and reliability of the clamping;

[0030] See also Figure 3The front and rear sides of the transmission cavity 2 are welded with first guide rods 9, which penetrate the moving block 7 and slide with the moving block 7. The setting of the first guide rods 9 ensures that the moving block 7 maintains linear motion during the movement process, prevents deviation, and improves the clamping accuracy.

[0031] See also Figure 2 A rotating shaft 4 is provided at one moving end of the double-threaded transmission rod 3, one end of the rotating shaft 4 extends to the outside of the transmission chamber 2, and the rotating shaft 4 rotates with the transmission chamber 2. A knob 5 is installed at one end of the rotating shaft 4 located outside the transmission chamber 2. The synchronous movement of the clamping plate 10 can be achieved by simply operating the knob 5, which is easy and efficient to operate.

[0032] See also Figure 1 , Figure 2 and Figure 4 A protective cover 6 is provided on the outside of the knob 5, and the upper end of the inner side of the protective cover 6 is rotatably connected to the base 1, and a magnetic iron sheet 8 is adhered and fixed to the lower end of the inner side of the protective cover 6 and one side of the base 1. The protective cover 6 can prevent the knob 5 from being accidentally touched or affected by the outside world, and the magnetic iron sheet 8 ensures that the protective cover 6 can fit the base 1 tightly when closed, further enhancing the protection effect;

[0033] See also Figure 3 Rollers 14 are installed on the front and rear sides of the lower end of the clamping plate 10, and guide grooves 15 are opened on the front and rear sides of the upper end of the base 1, and the guide grooves 15 are adapted to the rollers 14. The rollers 14 slide in the guide grooves 15, so that the movement of the clamping plate 10 is smoother and more accurate, avoiding direct friction with the base 1 and reducing wear;

[0034] See also Figure 1 and Figure 2 The inner side of the clamping plate 10 is bonded and fixed with a rubber pad 11, which can increase the friction between the clamping plate 10 and the right-angle prism to prevent slipping, and at the same time play a buffering role to prevent the right-angle prism from being damaged by hard clamping.

[0035] Working principle: When in use, place the right-angle prism on the upper end of the base 1, turn the protective cover 6 and turn the knob 5, the knob 5 will drive the shaft 4 to rotate synchronously, the shaft 4 will drive the double-threaded transmission rod 3 to rotate synchronously, and the double-threaded transmission rod 3 will drive the two moving blocks 7 to rotate synchronously. Since the moving blocks 7 are all slidably matched with the first guide rod 9, the first guide rod 9 will axially limit the two moving blocks 7, and the rotation of the two moving blocks 7 will be converted into opposite or opposite horizontal linear movement, so that the two moving blocks 7 move toward each other, thereby driving the clamping plate 10 to move synchronously. Since the two moving blocks 7 are synchronously and symmetrically driven by the double-threaded transmission rod 3, the clamping force of the clamping plates 10 on the right-angle prism is evenly distributed, thereby avoiding damage or position displacement of the right-angle prism due to uneven clamping force. When the clamping plate 10 moves, it drives the roller 14 to slide inside the guide groove 15. The guiding effect of the guide groove 15 ensures the linearity of the clamping plate 10 during movement, avoiding directional deviation due to improper operation or mechanical error. At the same time, when the clamping plate 10 moves, it will slide with the second guide rod 12. The second guide rod 12 can play a guiding role again to further avoid the deviation of movement. The buffer spring 13 will be gradually squeezed during the movement of the clamping plates 10. As an elastic element, the buffer spring 13 will produce a certain deformation when subjected to pressure, and at the same time generate a rebound force in the opposite direction of the pressure. The magnitude of this rebound force is proportional to the pressure applied by the clamping plate 10 on the buffer spring 13. When the clamping plate 10 starts to clamp the right-angle prism, if the clamping force is too large, the buffer spring will be further compressed to generate a larger rebound force. This The rebound force will act on the clamping plate 10, causing it to produce a small movement opposite to the clamping direction. Through this mechanism, the buffer spring 13 plays a role in buffering and adjusting the clamping force. Even if the operator uses too much force when turning the knob 5, it will not immediately cause excessive clamping force to the right-angle prism, thereby avoiding possible damage to the right-angle prism when it is clamped and fixed. When the knob 5 is not in use, the protective cover 6 can be firmly fitted with the base 1 through the magnetic iron sheet 8, so that the knob 5 can be protected by the protective cover 6 to avoid accidental touch causing the double-threaded transmission rod 3 to rotate.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A right-angle prism clamping and fixing device, comprising a base (1), wherein fixing blocks (16) are welded on both sides of the upper end of the base (1), and characterized in that: It also includes a transmission cavity (2) which is opened inside the base (1), the transmission cavity (2) is rotatably connected to a double-threaded transmission rod (3), the outer sides of the double-threaded transmission rod (3) are threadedly connected to moving blocks (7), the upper ends of the moving blocks (7) extend to the outside of the transmission cavity (2), and the moving blocks (7) are slidably matched with the transmission cavity (2), and clamping plates (10) are provided on both sides above the base (1), and the clamping plates (10) are connected to one end of the moving block (7) located outside the transmission cavity (2); It also includes a second guide rod (12), which is arranged between the fixing blocks (16), two second guide rods (12) are provided, and the second guide rods (12) are welded and fixed to the fixing blocks (16), the second guide rods (12) pass through the clamping plate (10), and the second guide rods (12) are slidably matched with the clamping plate (10).

2. A right angle prism clamping and fixing device according to claim 1, characterized in that: A buffer spring (13) is sleeved on the outside of each of the second guide rods (12), and both ends of the buffer spring (13) are connected to the clamping plate (10).

3. The right-angle prism clamping and fixing device according to claim 1, characterized in that: First guide rods (9) are welded to the front and rear sides of the transmission cavity (2), the first guide rods (9) penetrate the moving block (7), and the first guide rods (9) are slidably matched with the moving block (7).

4. The right-angle prism clamping and fixing device according to claim 1, characterized in that: A rotating shaft (4) is provided at the movable end of the double-threaded transmission rod (3), one end of the rotating shaft (4) extends to the outside of the transmission cavity (2), and the rotating shaft (4) and the transmission cavity (2) are rotatably matched, and a knob (5) is installed at one end of the rotating shaft (4) located outside the transmission cavity (2).

5. The right-angle prism clamping and fixing device according to claim 4, characterized in that: A protective cover (6) is provided on the outside of the knob (5), and the upper end of the inner side of the protective cover (6) is rotatably connected to the base (1), and a magnetic iron sheet (8) is bonded and fixed to the lower end of the inner side of the protective cover (6) and one side of the base (1).

6. The right-angle prism clamping and fixing device according to claim 1, characterized in that: Rollers (14) are installed on the front and rear sides of the lower end of the clamping plate (10), and guide grooves (15) are opened on the front and rear sides of the upper end of the base (1), and the guide grooves (15) are matched with the rollers (14).

7. The right-angle prism clamping and fixing device according to claim 1, characterized in that: A rubber cushion (11) is adhesively fixed to the inner side of each clamping plate (10).

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