CN204313788U - Bevel protractor - Google Patents

Abstract

The utility model discloses an angle ruler, which comprises: a main ruler and a movable ruler which forms a rotational connection with the main ruler and takes the first axis as a rotating shaft; the angle ruler also includes: a locking mechanism capable of locking the movable ruler and the main ruler to rotate relative to each other; The locking mechanism includes: a locking member capable of moving relative to the movable ruler at least in a direction parallel to the first axis; an operating member rotatably connected to the movable ruler; a transmission member capable of moving relative to the operating member at least in a direction parallel to the first axis; The component includes: a driving part, which can apply at least a driving force parallel to the first axis to the transmission part when the operating part rotates; Movement; the transmission part can make the locking part close to the main scale. The angular ruler of the utility model can lock the movable ruler to rotate relative to the main ruler.

Description

angle ruler

technical field

The utility model relates to an angle measuring device, in particular to a digital display angle ruler.

Background technique

During engineering operations, when an angle needs to be measured, an angle ruler is usually used. Nowadays, with the advancement of technology, the electronic digital goniometer has gradually replaced the traditional manual measurement goniometer. A digital display goniometer usually includes a main scale and a movable scale, which detects the angle to be measured by sensing the position of the movable scale relative to the main scale. However, during the measurement process, when the movable ruler is rotated to a preset angle relative to the main ruler, the movable ruler is often displaced relative to the main ruler due to an external force, which inevitably affects the accuracy of angle measurement. Moreover, in many applications, it is necessary to transfer the measured angle to a suitable device for application. In order to avoid changes in the angle during the transfer, it is necessary to keep the relative position of the main ruler and the movable ruler unchanged during the transfer, so it is locked.

Contents of the invention

In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide an angle ruler capable of locking the movable ruler to rotate relative to the main ruler.

In order to achieve the above object, the utility model adopts the following technical solutions:

An angle ruler, comprising: a main ruler and a movable ruler that forms a rotational connection with the main ruler and takes the first axis as the rotation axis;

The angle ruler also includes: a locking mechanism capable of locking the relative rotation of the movable ruler and the main ruler;

Locking mechanisms include:

a locking member capable of moving relative to the movable ruler at least along a direction parallel to the first axis;

The operating part can rotate relative to the movable ruler;

a transmission member capable of moving relative to the operating member at least along a direction parallel to the first axis;

Actions include:

a driving part capable of applying at least a driving force parallel to the first axis to the transmission member when the operating member rotates;

Transmission parts include:

The force receiving part moves the transmission member in a direction parallel to the first axis when driven by the driving part;

The transmission part can make the locking part close to the main scale.

Further, the circumferential position of the locking member relative to the movable ruler is fixed; and the locking member has an unlocking function of moving in a direction parallel to the first axis to a locked position in contact with the main ruler and moving in a direction parallel to the first axis to move away from the main ruler Location.

Further, the transmission part is at least partly accommodated in the operation part, and the transmission part and the operation part form a threaded connection with the first axis as the rotation axis; the driving part and the force receiving part are screw threads that cooperate with each other.

Further, the locking mechanism further includes: a limiting member capable of limiting the maximum rotation angle of the operating member, and the limiting member is located between the transmission member and the movable ruler.

Further, a limiting groove is provided on the limiting member, and the locking mechanism also includes a limiting pin that rotates synchronously with the operating member, and the end of the limiting pin away from the operating member is embedded in the limiting groove; the limiting member is also provided with a An axis direction faces the pivot post protruding close to the operating part, and a rotating shaft capable of rotating relative to the pivot post is provided between the operating part and the pivot post, and the rotating shaft is fixedly connected with the operating part.

Further, the locking mechanism further includes: a reset member capable of moving the locking member away from the main scale along a direction parallel to the first axis.

Further, the locking member is a locking pin, the locking pin is partially accommodated in the movable ruler, and the locking pin also includes a locking end that contacts the main ruler when it is in the locked position.

Further, the end surface area of the locking end is smaller than the end surface area of the other end of the locking pin away from the locking end; or the end surface area of the locking end is smaller than the cross-sectional area of the locking pin perpendicular to the axial direction between the locking end and the other end.

Further, the locking mechanism component also includes a reset member, which is a return spring, and the locking pin also includes a stop end opposite to the locking end, and the return spring is biased and arranged between the stop end and the movable ruler of the movable rotary wheel.

Further, the locking mechanism of the driving assembly also includes a reset member, which is a magnetic member capable of generating a magnetic force between it and the locking pin. The magnetic member is fixedly connected to the drive transmission member assembly and is located between the drive assembly transmission member and the locking member. between.

The utility model is beneficial in that the angle ruler is provided with a locking mechanism, which can fix the movable ruler relative to the main ruler, so that the angle ruler can form an angle that remains fixed during the movement process, and the locking mechanism The structure is simple and the operation is convenient.

Description of drawings

Shown in Fig. 1 is the structural representation of angle ruler of the present utility model;

Figure 2 is an enlarged schematic view of part of the structure in Figure 1;

Figure 3 is a plan view of the structure shown in Figure 2;

Figure 4 is a cross-sectional view of the structure shown in Figure 3 along the direction of the B-B line;

Figure 5 shows an exploded view of the structure shown in Figure 3 .

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is made concrete introduction.

The utility model relates to an angle ruler, the movable ruler of the angle ruler can be locked relative to the main ruler.

Fig. 1 shows the structural representation of the angle ruler of the present utility model; Fig. 2 shows the enlarged schematic diagram of part of the structure in Fig. 1; Fig. 3 shows the plan view of the structure shown in Fig. 2 . Please also refer to Fig. 1 to Fig. 3, the angle ruler 100 of the present utility model comprises: main ruler 10, movable ruler 20 and locking mechanism 30, wherein movable ruler 20 can rotate relative to main ruler 10, and forms a preset angle.

The main ruler 10 is a side for forming a preset angle, for example, a reference side of a preset angle, and the corresponding movable ruler 20 is used for forming a movable side of a preset angle. Specifically, the main scale 10 has a substantially rectangular structure, which has an inner side for forming a reference side, and one end of the main scale 10 is also provided with a main rotating wheel 11 rotatably connected with the movable scale 20 . The angle ruler 100 of the present utility model is preferably a digital display angle meter. Correspondingly, the main ruler 10 is also provided with a display screen 12 for displaying the size of the angle to be measured. The display screen 12 can be an LED display screen 12 or can be a A liquid crystal display screen 12, preferably also provided with a human-computer interaction interface on the display screen 12.

The movable ruler 20 includes a movable rotating wheel 21, through the rotational connection between the movable rotating wheel 21 and the main rotating wheel 11, the movable ruler 20 and the main ruler 10 form a rotational connection with the first axis A as the rotation axis, wherein the first axis A is perpendicular to the length direction of the main ruler 10 and the movable ruler 20 . In order to illustrate the technical solution of the utility model, the following definitions are specially made: the direction parallel to the first axis A is defined as the axial direction, and the circumferential direction perpendicular to the first axis A is defined as the circumferential direction.

Movable ruler 20 also is rectangular structure roughly, and when movable ruler 20 rotates with respect to main ruler 10, its inner edge near main ruler 10 is used to form movable edge, and when carrying out angle measurement like this, the inner edge of main ruler 10 and movable The preset angle formed between the inner sides of the ruler 20 is the angle to be measured. Preferably, the inside of the movable ruler 20 is roughly a U-shaped structure, so that the main ruler 10 can be accommodated in the movable ruler 20 from the opening of the U-shaped structure, so as to protect the main ruler 10. At this time, in order to observe To display data on the display screen 12 , the movable ruler 20 is also provided with a visible window 22 that can expose the display screen 12 .

As a preferred solution, a rotating shaft 13 is also provided between the main rotating wheel 11 in the main ruler 10 and the movable rotating wheel 21 in the movable ruler 20, and the rotating shaft 13 includes: a first guide part 131 and a second guide Section 132. Wherein the first guide part 131 passes through the main rotating wheel 11 and the movable rotating wheel 21 along the direction of the first axis A, and the movable rotating wheel 21 uses the first guiding part 131 as the rotating shaft to rotate relative to the main rotating wheel 11, so as to avoid the The plane in the direction of an axis A moves relative to the main rotating wheel 11; the second guide part 132 extends from the edge of the end of the first guide part 131, and the second guide part 132 is a ring structure, and the second guide part 132 is also connected to the first guide part 132 A guide portion 131 is vertical, and the second guide portion 132 can prevent the moving rotating wheel 21 from moving relative to the main rotating wheel 11 along the first axis A. Referring to FIG.

As a preferred solution, in order to realize the versatility of the angle ruler 100 of the present utility model, a horizontal indicating device (not shown in the figure) is also provided on the main ruler 10, and the horizontal indicating device may be a blister, for example.

Fig. 4 is a sectional view of the structure shown in Fig. 3 along the line B-B; Fig. 5 is an exploded view of the structure shown in Fig. 3 . Please refer to FIG. 4 and FIG. 5 together. The locking mechanism 30 is used to lock the relative rotation of the movable ruler 20 and the main ruler 10 , and includes: a locking member 31 , an operating member 32 , a transmission member 33 , a limiting member 34 and a reset member 35 .

The locking member 31 can move relative to the movable ruler 20 in a direction parallel to the first axis A, and is fixed relative to the movable ruler 20 in the circumferential direction perpendicular to the first axis A, and the locking member 31 has the ability to move in a direction parallel to the first axis A to a locked position in contact with the main scale 10 and to an unlocked position moving away from the main scale 10 in a direction parallel to the first axis A. Specifically, the locking member 31 is a locking pin, and the locking pin includes: a locking end 311 and a stop end 312 . The locking member 31 is partly accommodated in a receiving hole (not shown) provided in the movable rotating wheel 21 of the movable ruler 20 and extending along a direction parallel to the first axis A. When the locking member 31 is in the locked position, the locking end 311 is in contact with the main rotating wheel 11 of the main ruler 10, and the stopper end 312 can stop the movable rotating wheel 21 of the movable ruler 20 from moving in a direction away from the main rotating wheel 11. Under the friction between the locking end 311 and the main rotating wheel 11 and the elastic force between the stop end 312 and the movable rotating wheel 21, the movable rotating wheel 21 can be fixed circumferentially relative to the main rotating wheel 11, thereby locking the movable ruler 20 relative to the relative rotation of the main scale 10. When the locking member 31 is in the unlocked position, the locking end 311 is disengaged from the main rotating wheel 11, and the elastic force between the stopper end 312 and the movable rotating wheel 21 is reduced. At this time, the movable rotating wheel 21 can rotate relative to the main rotating wheel 11. Therefore, the movable ruler 20 can rotate relative to the main ruler 10 .

As a preferred solution, the end surface area of the locking end 311 is also smaller than the end surface area of the other end (stop end 312) of the locking pin away from the locking end 311. Further, the end surface area of the locking end 311 is also smaller than that of the locking pin located at the locking end 311 and The cross-sectional area perpendicular to the axial direction of the part between the other ends (stopping ends 312 ) can reduce the contact area between the locking end 311 and the main ruler 10 and increase the frictional force. Specifically, the locking end 311 is further formed with a groove 311 a that is recessed toward the other end of the locking end 311 , that is, the stop end 312 . In this way, when the locking end 311 contacts the main rotating wheel 11 , the groove 311 a makes the end of the locking end 311 form a substantially annular locking surface 311 b that contacts the surface of the main rotating wheel 11 . Of course, it can be understood that the locking end 311 can also be a pointed structure with its edge cut off, or the like.

The operating member 32 is used for user operation, and the operating member 32 can rotate relative to the movable rotating wheel 21 of the movable ruler 20 . The operating member 32 includes: a driving portion 321 , and the driving portion 321 can apply a driving force parallel to the first axis A to the transmission member 33 when the operating member 32 rotates.

The transmission member 33 can move in a direction parallel to the first axis A relative to the operating member 32 . The transmission part 33 includes: a force receiving part 331 and a transmission part 332. When the force receiving part 331 is driven by the driving part 321, the transmission part 33 can move along a direction parallel to the first axis A. The transmission part 332 moves along the direction of the transmission part 33. When the first axis A moves close to the main scale 10 , it can drive the locking member 31 to also move close to the main scale 10 .

As a preferred solution, the transmission part 33 is partly accommodated in the operation part 32, and a threaded connection is formed between the transmission part 33 and the operation part 32 with the first axis A as the rotation axis; the driving part 321 and the force receiving part 331 are screw threads that cooperate with each other Specifically, the driving portion 321 is an external thread provided inside the operating member 32 , and the force receiving portion 331 is an internal thread provided outside the transmission member 33 and matched with the external thread. Through the cooperation of the internal thread and the external thread, the transmission member 33 can generate relative movement in the direction of the first axis A while rotating relative to the operating member 32 .

The limiting member 34 can limit the maximum rotation angle of the transmission member 33 and is located between the transmission member 33 and the movable rotating wheel 21 of the movable ruler 20 . Further, the limiting member 34 is located on one side of the second guiding portion 132 of the rotating shaft 13 and is fixedly connected with the second guiding portion 132 . The limiting member 34 is provided with a limiting groove 341 extending along a circumferential direction perpendicular to the direction of the first axis A. Correspondingly, the locking mechanism 30 further includes a limiting pin 36 that rotates synchronously with the operating member 32. The limit pin 36 can be integrally formed with the operating member 32 or can be formed separately. Under the cooperation with the limiting groove 341, the angle at which it can rotate relative to the limiting member 34 is limited by the circumferential length of the limiting groove 341, so as to avoid the excessive force on the locking member 31 caused by the maximum rotation angle of the operating member 32 Large and broken or worn.

As a preferred solution, the limiting member 34 is further provided with a pivot post 342 , and the pivot post 342 protrudes from the limiting member 34 in a direction parallel to the first axis A toward the operating member 32 . A rotating shaft 36 is arranged between the operating member 32 and the pivot post 342, and the rotating shaft 36 can rotate in the circumferential direction relative to the pivot post 342, and the rotating shaft 36 is also fixedly connected with the operating member 32, so that the operating member 32 can rotate relative to the pivot post 342. The limiting member 34 rotates in the circumferential direction.

The reset member 35 can make the locking member 31 move along a direction parallel to the first axis A to an unlocked position away from the main scale 10 . Specifically, the return member 35 is a return spring, and the return spring bias is arranged between the stop end 312 of the locking member 31 and the movable rotating wheel 21, so that when the operating member 32 rotates, the transmission member 33 faces away from the main scale 10 When moving in the direction of , the locking member 31 can automatically return to the unlocked position under the action of the return spring. Of course, it can be understood that the reset member 35 can also be a magnetic member capable of generating a magnetic force between it and the locking member 31, the magnetic member is fixedly connected with the transmission member 33, and is located between the transmission member 33 and the locking member 31, so that , when the transmission member 33 drives the magnet to move away from the main ruler 10 , under the action of the magnetic force, the locking member 31 can also automatically reset to the unlocked position away from the main ruler 10 .

The locking mechanism 30 in the angle ruler 100 of the present utility model rotates the operating member 32, so that the internal transmission member 33 drives the locking member 31 to contact the main rotating wheel 11, thereby locking the rotation of the movable ruler 20 relative to the main ruler 10, and its structure is simple , easy to operate, securely locked, and high in structural strength, the locking mechanism 30 enables the angle ruler 100 to be locked at a preset angle, so that the angle ruler 100 can form a preset angle that remains fixed during the movement.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the utility model in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation all fall within the protection scope of the utility model.

Claims (10)

1. a bevel protractor, comprising: main scale and to form with described main scale with first axle be the adjustable rule be rotationally connected of rotating shaft;

It is characterized in that,

Described bevel protractor also comprises: can lock described adjustable rule and described main scale locking mechanism in relative rotation;

Described locking mechanism comprises:

Locking piece, at least can move along being parallel to described first axle direction relative to described adjustable rule;

Operating parts, can rotate relative to described adjustable rule;

Driving member, at least can move along being parallel to described first axle direction relative to described operating parts;

Described operating parts comprises:

Drive division, can at least apply to described driving member the driving force being parallel to described first axle when described operating parts rotates;

Described driving member comprises:

Forced section, makes described driving member move along being parallel to described first axle direction when being subject to described drive division and driving;

Driving section, can make described locking piece near described main scale.

2. bevel protractor according to claim 1, is characterized in that, the circumferential position of the relatively described adjustable rule of described locking piece is fixed; And described locking piece has and is moving to the latched position that contacts with described main scale along being parallel to described first axle direction and moving to unlocked position away from described main scale along being parallel to described first axle direction.

3. bevel protractor according to claim 2, is characterized in that, described driving member is contained in described operating parts at least partly, and to form with described first axle between described driving member with described operating parts be rotating shaft is threaded; Described drive division and described forced section are the screw thread cooperatively interacted.

4. bevel protractor according to claim 3, is characterized in that, described locking mechanism also comprises: the locating part that can limit the maximum rotation angle of described operating parts, described locating part is between described driving member and described adjustable rule.

5. bevel protractor according to claim 4, is characterized in that, described locating part is provided with stopper slot, and described locking mechanism also comprises the spacer pin with described operating parts synchronous axial system, and described spacer pin embeds in described stopper slot away from one end of described operating parts; Described locating part is also provided with along being parallel to described first axle direction towards the pivot post protruded near described operating parts, be provided with the rotation axis that an energy rotates relative to described pivot post between described operating parts with described pivot post, described rotation axis is fixedly connected with described operating parts.

6. the bevel protractor according to claim 1 to 5 any one, is characterized in that, described locking mechanism also comprises: described locking piece can be made to move to return unit away from described main scale along being parallel to described first axle direction.

7. bevel protractor according to claim 2, is characterized in that, described locking piece is a stop pin, and described stop pin is partially housed in described adjustable rule, and described stop pin is also included in the keyed end contacted with described main scale when it is positioned at described latched position.

8. bevel protractor according to claim 7, is characterized in that, the face area of described keyed end is less than the face area of described stop pin away from the other end of described keyed end; Or the face area of described keyed end is less than the sections transverse of described stop pin between described keyed end and the other end in the area of section of axis.

9. bevel protractor according to claim 7, it is characterized in that, described locking mechanism part also comprises return unit, described return unit is back-moving spring, described stop pin also comprises the stop end relative with described keyed end, described back-moving spring bias voltage be arranged at described stop end and described moving rotary is taken turns between adjustable rule.

10. bevel protractor according to claim 7, it is characterized in that, described driven unit locking mechanism also comprises return unit, described return unit is a magnetic part that can produce magnetic force between itself and described stop pin, described magnetic part is fixedly connected with described driving driving member assembly, and between described driven unit driving member and described locking piece.