CN208655097U - A kind of trigonometric function comparison device - Google Patents

Abstract

The utility model discloses a kind of trigonometric function comparison device, including Z axis bar, auxiliary flute, X-axis bar, Y-axis bar, adjustable type angle scale and catch tray, the upper center of the catch tray is transversely provided with center groove, the Z axis bar is located in center groove, and one end of Z axis bar is run through equipped with central axis, the both ends of central axis connect the side wall of center groove by floating bearing, the upper end two sides of the catch tray are transversely provided with auxiliary flute, and X-axis bar and Y-axis bar are respectively equipped in two auxiliary flutes, the upper end two sides of the X-axis bar and Y-axis bar are fitted and connected with one end of retention bead, the other end of retention bead is fixedly connected on the downside of one end of square locating rod, the catch tray of setting is to Z axis bar, X-axis bar and Y-axis bar are reasonably stored, largely reduce single unit system when not in use Multiple square locating rods of occupied space, setting limit the position of Z axis bar, X-axis bar and Y-axis bar well.

Description

A kind of trigonometric function comparison device

Technical field

The utility model relates to teaching aid correlative technology field, specially a kind of trigonometric function comparison device.

Background technique

During mathematical education, many functional relations are mostly abstract literal interpretation, need to be obtained by calculation and confirm, So that many students understand extremely difficult, such as the functional relation of trigonometric function of getting up, substantial variations in angle caused by function, Only lean on literal interpretation, be it is elusive, this can the understanding of explanation and student to teacher bring very big difference.

In the prior art, number of patent application is 201720086724 .1, a kind of entitled trigonometric function calculating demonstration of patent The Chinese patent of device, the patent are equipped with Z axis bar, X-axis bar and Y-axis bar, three angle scales are recycled, so that being integrally formed one Adjustable pyrometric cone, in teaching in use, this device, which facilitates student to compare books, understands trigonometric function, the device is generally Mosaic type structure is installed, since the space of classroom and office is limited, this device when not in use, occupies very big sky Between, the practicability is poor, and this device is that triangular pyramidal accidentally collides on device if student is at play, can be to student Body damage, there is very big security risk.

Utility model content

The purpose of this utility model is to provide a kind of trigonometric function comparison devices, to solve in above-mentioned background technique The problem of proposition.

To achieve the above object, the utility model provides the following technical solutions: a kind of trigonometric function comparison device, packet Z axis bar, auxiliary flute, X-axis bar, Y-axis bar, adjustable type angle scale and catch tray are included, the upper center of the catch tray is laterally set There is center groove, the Z axis bar is located in center groove, and one end of Z axis bar is run through equipped with central axis, and the both ends of central axis are equal The side wall of center groove is connected by floating bearing, the upper end two sides of the catch tray are transversely provided with auxiliary flute, and two auxiliary It helps groove to be symmetrical arranged along center groove, and is respectively equipped with X-axis bar and Y-axis bar in two auxiliary flutes, the X-axis bar and Y-axis The upper end two sides of bar are fitted and connected with one end of retention bead, and the other end of retention bead is fixedly connected with square locating rod On the downside of one end, the other end of the square locating rod is located in the right angle mouth on the outside of catch tray, and square locating rod is another One end, which is run through, is equipped with circular hole, one end of Damping rotation shaft is plugged in circular hole, one end of the Damping rotation shaft is fixedly connected with extension block One end, the other end of extension block is fixedly connected with the side wall of right angle mouth.

Preferably, the quantity of adjustable type angle scale is three, and three adjustable type angle scales, which are respectively positioned on, to be placed in inside groove, and three A adjustable type angle scale is respectively X-Z angle scale, X-Y angle scale and Y-Z angle scale.

Preferably, the placement inside groove is located in the side of catch tray, then the length for placing inside groove is catch tray length One third.

Preferably, in the fixation hole of other end insertion fixing sleeve one end of the Damping rotation shaft, and Damping rotation shaft is another End is cooperatively connected by internal and external threads and fixation hole.

Compared with prior art, the utility model has the beneficial effects that structurally reasonable, the catch tray of setting is to Z axis bar, X Shaft and Y-axis bar are reasonably stored, and the occupied space of single unit system when not in use, practicability are largely reduced By force, multiple square locating rods of setting limit the position of Z axis bar, X-axis bar and Y-axis bar well, have prevented entirety Security risk existing for device, very good solution shortcoming in the prior art.

Detailed description of the invention

Fig. 1 is the utility model structural profile illustration；

Fig. 2 is the utility model structure top view；

Fig. 3 is structure enlargement diagram at A in the utility model Fig. 2.

In figure: catch tray 1, center groove 2, Z axis bar 3, auxiliary flute 4, X-axis bar 5, Y-axis bar 51, square locating rod 6, Right angle mouth 7, Damping rotation shaft 9, fixing sleeve 10, places inside groove 11, adjustable type angle scale 12 at extension block 8.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of trigonometric function comparison device, including Z The upper center of shaft 3, auxiliary flute 4, X-axis bar 5, Y-axis bar 51, adjustable type angle scale 12 and catch tray 1, catch tray 1 is lateral Equipped with center groove 2, Z axis bar 3 is located in center groove 2, and one end of Z axis bar 3 is run through equipped with central axis, the both ends of central axis The side wall of center groove 2 is connected by floating bearing, the upper end two sides of catch tray 1 are transversely provided with auxiliary flute 4, and two auxiliary It helps groove 4 to be symmetrical arranged along center groove 2, and is respectively equipped with X-axis bar 5 and Y-axis bar 51, X-axis bar 5 and Y in two auxiliary flutes 4 The upper end two sides of shaft 51 are fitted and connected with one end of retention bead, and the other end of retention bead is fixedly connected with square positioning On the downside of one end of bar 6, the other end of square locating rod 6 is located in the right angle mouth 7 in 1 outside of catch tray, and square locating rod 6 The other end run through and be equipped with circular hole, one end of Damping rotation shaft 9 is plugged in circular hole, one end of Damping rotation shaft 9 is fixedly connected with extension One end of block 8, the other end of extension block 8 are fixedly connected with the side wall of right angle mouth 7；

The quantity of adjustable type angle scale 12 is three, and three adjustable type angle scales 12, which are respectively positioned on, to be placed in inside groove 11, and three A adjustable type angle scale 12 is respectively X-Z angle scale, X-Y angle scale and Y-Z angle scale；

The catch tray 1 of setting reasonably stores Z axis bar 3, X-axis bar and Y-axis bar 51, largely reduces whole The occupied space of body device when not in use, practical, multiple square locating rods 6 of setting are to Z axis bar 3, X-axis bar and Y The position of shaft 51 is limited well, has prevented security risk existing for single unit system；

Inside groove 11 is placed to be located in the side of catch tray 1, then place the length of inside groove 11 for 1 length of catch tray three/ One, the other end of Damping rotation shaft 9 is inserted into the fixation hole of 10 one end of fixing sleeve, and the other end of Damping rotation shaft 9 passes through inside and outside spiral shell Line and fixation hole are cooperatively connected.

Working principle: when single unit system when not in use, first outward pull square locating rod 6, then by Z axis bar 3 to Side is mobile, and Z axis bar 3 is moved in center groove 2, then X-axis bar 5 and Y-axis bar 51 are respectively put into two placement inside grooves 11, Square locating rod 6 is unclamped again, under the action of Damping rotation shaft, square locating rod 6 resets, and retention bead is to placement inside groove 11 Interior X-axis bar 5 and Y-axis bar 51 are formed to squeeze and be fixed, then adjustable type angle scale 12 is put into and places inside groove 11, the collection of setting Disk 1 reasonably stores Z axis bar 3, X-axis bar and Y-axis bar 51, largely reduces single unit system when not in use Occupied space.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of trigonometric function comparison device, including Z axis bar (3), auxiliary flute (4), X-axis bar (5), Y-axis bar (51), tune Section formula angle scale (12) and catch tray (1), it is characterised in that: the upper center of the catch tray (1) is transversely provided with center groove (2), the Z axis bar (3) is located in center groove (2), and one end of Z axis bar (3) is run through equipped with central axis, the both ends of central axis By the side wall of floating bearing connection center groove (2), the upper end two sides of the catch tray (1) are transversely provided with auxiliary flute (4), two auxiliary flutes (4) are symmetrical arranged along center groove (2), and are respectively equipped with X-axis bar (5) in two auxiliary flutes (4) With Y-axis bar (51), the upper end two sides of the X-axis bar (5) and Y-axis bar (51) are fitted and connected with one end of retention bead, limit The other end of protrusion is fixedly connected on the downside of one end of square locating rod (6), and the other end of the square locating rod (6) is located at In right angle mouth (7) on the outside of catch tray (1), and the other end of square locating rod (6) is plugged in circular hole through circular hole is equipped with One end of Damping rotation shaft (9), one end of the Damping rotation shaft (9) are fixedly connected with one end of extension block (8), extension block (8) it is another One end is fixedly connected with the side wall of right angle mouth (7).

2. a kind of trigonometric function comparison device according to claim 1, it is characterised in that: the adjustable type angle scale (12) quantity is three, and three adjustable type angle scales (12), which are respectively positioned on, places in inside groove (11), and three adjustable type angle scales It (12) is respectively X-Z angle scale, X-Y angle scale and Y-Z angle scale.

3. a kind of trigonometric function comparison device according to claim 1 or 2, it is characterised in that: the placement inside groove (11) in the side of catch tray (1), then the length for placing inside groove (11) is the one third of catch tray (1) length.

4. a kind of trigonometric function comparison device according to claim 1, it is characterised in that: the Damping rotation shaft (9) The other end insertion fixing sleeve (10) one end fixation hole in, and the other end of Damping rotation shaft (9) pass through internal and external threads and fixation Hole is cooperatively connected.