CN103671474B - A kind of angle demodulator with rotary switch - Google Patents

Abstract

The invention provides an angle adjuster with a rotary switch, which includes a cam with a shaft, a fixed cover plate, an attached plate, two forks, two springs, a main plate seat, and a knob, and the two springs are respectively sleeved on the two forks. On the spring guide post of the fork body, the moving guide posts of the two fork bodies are inserted into the chute of the main disc seat oppositely, the fixed cover plate is fixed on the upper end surface of the boss, and the attached disc is sleeved on the boss of the main disc seat, and is connected with the main disc seat. The main disk seat is hinged, and interlocking components are respectively provided on the inner wall of the attached disk and on the side of the fork body; the shaft of the cam with shaft is inserted into the axial through hole of the main disk seat, and the roller of the fork body is inserted into the arc-shaped hole on the cam with shaft. In the groove; the knob is connected to the shaft with the shaft cam. Turn the knob to rotate the belt shaft cam, the roller drives the fork to move towards the axis of the main disc seat, the spring is compressed, the fork and the attached disc are unlocked, and the relative angle between the main disc seat and the attached disc can be adjusted at this time. When the knob is released, the spring returns to its deflection and re-interlocks for angle adjustment. The invention has the advantages of simple structure, convenient use and flexible adjustment.

Description

An angle adjuster with a knob switch

technical field

The invention belongs to the mechanical field and relates to an angle adjuster with a rotary switch.

Background technique

With the advancement of productivity, angle adjusters play an important role. Angle adjuster, commonly used between two rods, is used to change the angle between the two rods. The existing angle adjuster is usually two friction discs, which are connected by screw parts, so it is very inconvenient to readjust the angle.

Contents of the invention

The object of the present invention is to overcome the defects of the prior art and provide an angle adjuster with a rotary switch which is simple in structure, easy to use and flexible in adjustment.

The present invention achieves the above-mentioned technical purpose through the following technical means.

An angle adjuster with a rotary switch, comprising a cam with a shaft, a countersunk screw, a fixed cover, an attached disc, two forks, two springs, a main disc seat, and a knob, and the cam with a shaft includes a wheel disc And the shaft welded on the wheel disc, there are two arc-shaped grooves distributed symmetrically with the center of the wheel disc on the said wheel disc, the centers of the two arc-shaped grooves are staggered from the center of the wheel disc, and are located in a On a straight line; the fork body has a roller, a moving guide post, and a spring guide post, the moving guide post and the spring guide post are located on one side, and the roller is located on the top surface; the main disc seat has a The boss inserted into the inner part of the attachment plate is provided with an axial through hole, and the boss is provided with a chute and a radial circular hole that runs through the boss transversely; the two springs are respectively sleeved on the spring guides of the two forks. On the column, the moving guide columns of the two forks are inserted into the chute oppositely, and the position of the radial circular hole corresponds to the position of the spring guide column; There are two axially symmetrical notches, the fixed cover is located on the upper part of the fork body and fixed on the upper end surface of the boss, the roller is located at the gap of the fixed cover; the attached disc is sleeved on the boss of the main disc seat, and The attached disk can rotate around the axis of the main disk seat, and the inner wall of the attached disk and the side opposite to the side where the moving guide column is provided with interlocking components capable of interlocking; the shaft of the cam with shaft is inserted into the main disk The axial through hole of the seat, the rollers of the two forks are embedded in the two arc-shaped grooves on the wheel respectively; connect.

Preferably, an uncovered cover is also provided on the upper end surface of the attachment plate.

Preferably, the end face of the free end of the shaft cam with shaft is provided with a screw hole, and the end of the free end is a flat structure, and the center of the knob is provided with a flat shape conforming to the cross-sectional shape of the free end of the shaft. Counterbore, the flat structure matches the flat counterbore, the cam with the shaft and the knob are fixed by countersunk screws, and the countersunk screws cooperate with the screw holes on the shaft end face.

Preferably, the interlocking members on the inner surface of the attachment plate and the side of the fork are respectively internal teeth located on the inner surface of the attachment plate and outer teeth located on the side of the fork body that mesh with the inner teeth of the attachment plate.

Preferably, the root of the spring guide post on the fork body is provided with an annular groove, and one end of the spring is embedded in the annular groove.

According to the angle adjuster with the knob switch of the present invention, the knob is connected with the cam with the shaft, and the cam with the shaft can be rotated synchronously by turning the knob. In the natural state, under the elastic force of the spring, the fork body expands radially along the main disc seat, the interlocking components on the side of the fork body and the inner surface of the attached disc interlock, and the relative angle between the attached disc and the main disc seat is fixed, which cannot Change. When the knob is turned, the cam with shaft drives the fork to move through the roller, and the fork moves along the radial direction of the main disk seat to the axis of the main disk seat, the spring is compressed, and the interlocking components on the side of the fork body and the inner surface of the attached disk Break away, unlock. At this time, the relative angle between the main disc seat and the attached disc can be adjusted. When the knob is loosened, the spring resumes its deformation and pushes the fork to move away from the axis of the main disc seat along the radial direction of the main disc seat. The interlocking components on the side of the fork body and the inner surface of the attached disc interlock again, The relative angle with the attached plate is fixed, and the knob returns to the initial position to realize angle adjustment.

The angle adjuster with the rotary switch of the present invention has simple structure, convenient use and flexible adjustment.

Description of drawings

Fig. 1 is an exploded view of an embodiment of an angle adjuster with a rotary switch according to the present invention.

Fig. 2 is an axial half-sectional view of the angle adjuster with a rotary switch according to the present invention.

Fig. 3 is a radial partial sectional view of the angle adjuster with a rotary switch according to the present invention.

Fig. 4 is a schematic diagram of the assembly relationship of the main disc components.

FIG. 5 is an enlarged view at point A in FIG. 4 .

Fig. 6 is a schematic diagram of the assembly relationship of the main disk component, the attached disk, and the fixed cover.

Figure 7 is a schematic diagram of the installation of the cam with shaft and the knob.

Fig. 8 is a self-locking state diagram of the angle adjuster with a rotary switch according to the present invention.

Fig. 9 is an unlocked state diagram of the angle adjuster with a rotary switch according to the present invention.

The reference signs are explained as follows:

1-No cover, 2-Cam with shaft, 201-Arc groove, 202-Flat structure, 3-Front head screw, 4-Fixed cover, 401-Notch, 5-Attachment plate, 6-Fork body, 601 -Roller, 602-moving guide post, 603-spring guide post, 7-spring, 8-main disc seat, 801-boss, 802-axial through hole, 803-chute, 9-knob, 901-flat counterbore.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

As shown in Fig. 1, Fig. 2 and Fig. 3, the angle adjuster with the rotary switch provided by the present invention includes an uncovered 1, a cam with a shaft 2, a countersunk screw 3, a fixed cover plate 4, an attached plate 5, two A fork body 6, two springs 7, a main disc seat 8, a knob 9. As shown in FIG. 6 , the cam with shaft 2 includes a wheel disc and a shaft welded on the wheel disc, and the wheel disc has two arc-shaped grooves 201 distributed symmetrically about the center of the wheel disc. As shown in Figure 5, the fork body 6 has a roller 601, a moving guide post 602, and a spring guide post 603, the moving guide post 602 and the spring guide post 603 are located on one side, and the roller 601 is located on the top On the surface; the side opposite to the side where the external teeth moving guide post 602 is provided with external teeth.

As shown in FIG. 4 , the main disk base 8 has a boss 801 that can be inserted into the interior of the accessory disk 5 , and an axial through hole 802 is provided at the center of the axis, and the boss 801 is provided with a chute that runs through the boss 801 transversely. 803 and radial round holes. The two springs 7 are sleeved on the spring guide posts 603 of the two fork bodies 6 respectively, and the moving guide posts 602 of the two fork bodies 6 are inserted into the sliding slots 803 facing each other. The position of the radial circular hole corresponds to the position of the spring guide post 603. When the two forks 6 move along the radial direction of the main disc seat 8 to the direction close to the axis of the main disc seat 8, the spring guide post 603 can Enter radial circular hole, make fork body 6 move freely. Preferably, an annular groove is provided at the root of the spring guide post 603 on the fork body 6 , and one end of the spring 7 is embedded in the annular groove for easy assembly.

As shown in FIG. 6 , the fixed cover 4 has a central through hole and two notches 401 symmetrical to the central axis. The fixed cover 4 is located on the upper part of the fork 6 and fixed on the upper end surface of the boss 801 , and the roller 601 is located at the notch 401 of the fixed cover 4 . The attached disk 5 is sleeved on the boss 801 of the main disk base 8 , and the attached disk 5 can rotate around the axis of the main disk base 8 . The inner wall of the attachment plate 5 is provided with inner teeth that mesh with the outer teeth on the fork body 6 . The uncovered 1 is fixed on the upper surface of the attached plate 5, and the uncovered 1 and the attached plate 5 are fastened by glue.

As shown in FIG. 7 , the shaft of the cam with shaft 2 is inserted into the axial through hole 802 of the main disc seat 8 , and the rollers 601 of the two fork bodies 6 are inserted into the two arc-shaped grooves 201 on the disc respectively. The end surface of the free end of the shaft of the cam with shaft 2 is provided with a screw hole (not shown in the figure), and the end of the free end of the shaft is a flat structure 202 . The center of the knob 9 is provided with a flat counterbore 901 conforming to the cross-sectional shape of the free end of the shaft. The knob 9 is located under the main disk base 8, the flat structure 202 is matched with the flat counterbore 901, the cam 2 with the shaft and the knob 9 are fixed by the countersunk screw 3, and the countersunk screw 3 is connected with the screw hole on the end surface of the shaft. Cooperate.

With the angle adjuster of the rotary switch, the roller 601 of the fork body 6 is located in the arc-shaped groove 201 of the belt cam 2 wheel disc. The rotation of the knob 9 drives the belt shaft cam 2 to rotate, and indirectly realizes the radial movement of the fork body 6 along the main disc seat 8 . The knob 9 is connected with the cam 2 with the shaft, and the cam 2 with the shaft can be rotated synchronously by turning the knob 9, and the rotation range of the knob is 0-90°. In the natural state, as shown in Figure 8, under the elastic force of the spring 7, the fork body 6 radially expands along the main disc seat 8, and the interlocking components on the side of the fork body 6 and the inner surface of the attached disc 5 are interlocked, and the attached disc 5 is interlocked. The relative angle between disc 5 and main disc base 8 is fixed and cannot be changed. When the knob 9 is turned, the belt shaft cam 2 drives the fork body 6 to move through the roller 601, and the fork body 6 moves toward the axis center of the main disc seat along the radial direction of the main disc seat 8, and the spring is compressed, and the side of the fork body 6, the attached The interlocking components on the inner surface of the disc 5 are disengaged and unlocked. At this time, the state of the angle adjuster is shown in FIG. 9 , and the relative angle between the main disc base 8 and the attached disc 5 can be adjusted. When the knob 9 is loosened, the spring 7 resumes its deformation and pushes the fork body 6 to move along the radial direction of the main disc seat 8 in a direction away from the axis of the main disc seat. Interlocking, the relative angle between the main disk seat 8 and the attached disk 5 is fixed, and the knob 9 returns to the initial position to realize angle adjustment.

In the above-mentioned embodiment, the inner teeth on the inner surface of the attachment plate 5 and the outer teeth on the side of the fork body 6 can engage with each other to realize the interlock between the attachment plate 5 and the fork body 6. Therefore, this can be achieved. Other interlocking structures of functions can also be used for the angle adjuster, for example, a locking tongue is provided on the side of the fork body 6 , and a groove conforming to the shape of the locking tongue is provided on the attachment plate 5 .

The described embodiment is a preferred implementation of the present invention, but the invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make All belong to the protection scope of the present invention.

Claims (5)

1. the angle demodulator with rotary switch, it is characterized in that, comprise band axis cam (2), securing cover plate (4), attached dish (5), two forks body (6), two springs (7), master seat (8), knob (9), described band axis cam (2) comprises wheel disc and is welded on the axle on wheel disc, described wheel disc has two with the arc-shaped slot (201) of wheel disc Central Symmetry distribution, the described center of circle of two arc-shaped slots (201) and the center of wheel disc are staggered and are positioned on straight line; Described fork body (6) have roller (601), mobile guide pillar (602), spring guide pillar (603), described mobile guide pillar (602), spring guide pillar (603) are positioned on a side, and described roller (601) is positioned on end face; Described master seat (8) has can insert the inner boss (801) of attached dish (5), axle center is provided with axial hole (802), and described boss (801) is provided with and laterally runs through the chute (803) of boss (801) and radial circular hole; Two springs (7) are enclosed within the spring guide pillar (603) of two forks body (6) respectively, the mobile guide pillar (602) of described two forks body (6) inserts chute (803) in opposite directions, and the position of described radial circular hole is corresponding with the position of spring guide pillar (603); Described securing cover plate (4) has be positioned at center through hole, with axisymmetric two breach (401) in center, securing cover plate (4) is positioned at fork body (6) top, is fixed on boss (801) upper-end surface, and described roller (601) is positioned at breach (401) place of securing cover plate (4); Described attached dish (5) is enclosed within the upper and attached dish (5) of the boss (801) of master seat (8) can around master seat (8) axis rotation, and on the inwall of attached dish (5), the side relative with mobile guide pillar (602) side, place is respectively equipped with the interlocking member that can interlock with fork body (6); The axle of described band axis cam (2) inserts the axial hole (802) of master seat (8), and the roller (601) of two forks body (6) embeds in two arc-shaped slots (201) on wheel disc respectively; Described knob (9) to be positioned at below master seat (8) and to be connected with the free end of the axle of described band axis cam (2).

2. angle demodulator according to claim 1, is characterized in that, the upper-end surface of described attached dish (5) is also provided with and does not cover (1).

3. angle demodulator according to claim 1, it is characterized in that, the end face of the free end of the axle of described band axis cam (2) is provided with screw and the end of free end is flat structure (202), described knob (9) center is provided with the flat counterbore conformed to the free end end cross-sectional shape of described axle, described flat structure (202) coordinates with flat counterbore, band axis cam (2) is fixed by sunk screw (3) with knob (9), and sunk screw (3) coordinates with the screw in axial end.

4. angle demodulator according to claim 1, it is characterized in that, the interlocking member on the inwall of attached dish (5), fork body (6) side be respectively be positioned at attached dish (5) inwall internal tooth, be positioned at the external tooth that fork body (6) side is meshed with the internal tooth of attached dish (5).

5. angle demodulator according to claim 1, is characterized in that, the root of fork body (6) upper spring guide pillar (603) is provided with annular groove, and one end of described spring (7) is embedded in described circular groove.