CN210038284U

CN210038284U - Square rod fixing device and optical equipment

Info

Publication number: CN210038284U
Application number: CN201920432730.7U
Authority: CN
Inventors: 陈永壮; 但佳鹏
Original assignee: Shenzhen Appotronics Technology Co Ltd
Current assignee: Shenzhen Appotronics Corp Ltd; Shenzhen Appotronics Technology Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-02-07
Anticipated expiration: 2029-04-02
Also published as: WO2020199916A1

Abstract

The utility model provides a square bar fixing device, it include the support and can dismantle connect in the elastic component of support, the support includes the first fixed plate and the second fixed plate that mutually perpendicular connected, the elastic component cross-over connection in first fixed plate with the second fixed plate. The utility model also provides an optical device, it includes the utility model discloses a square bar fixing device and be fixed in square bar fixing device's square bar. Compared with the prior art, the utility model discloses a square bar fixing device reliability is high and be applicable to the fixed of miniature square bar.

Description

Square rod fixing device and optical equipment

Technical Field

The utility model relates to an optics field especially relates to a square bar fixing device and optical equipment.

Background

In the optical field, a square bar (or called a light homogenizing bar) is one of optical elements indispensable to an optical apparatus, and the reliability of fixing the square bar directly affects the optical performance of the optical apparatus, and the square bar is usually fixed by a square bar fixing device in the optical apparatus such as a projector, a camera, a microscope, and the like.

In the related art, the square bar fixing device includes a bracket, a square bar supported by the bracket, and an elastic member detachably fixed to the bracket and pressing and fixing the square bar to the bracket; the elastic piece comprises an elastic piece body and an elastic arm, wherein the elastic piece body is fixedly formed with the support, the elastic arm extends towards the direction of the square rod from the elastic piece body, and the elastic arm abuts against the square rod and is fixedly formed.

However, in the square bar fixing device of the related art, the elastic arm of the same elastic member abuts against one side surface of the square bar, so that when the square bar is fixed, at least two elastic members are required to abut against different side surfaces of the square bar respectively to form a fixing, and due to different installation sequences, the plurality of elastic members generate moment due to asynchronous installation, which easily causes the installation position of the square bar to deviate, thereby causing poor installation reliability; in the related art, the elastic member and the square bar have a large compressive stress and a large contact area, and cannot be used for fixing the miniature square bar.

Therefore, there is a need to provide a new square bar fixing device and an optical apparatus to solve the above-mentioned problems.

Disclosure of Invention

An object of the utility model is to provide a square bar fixing device and optical equipment, this square bar fixing device's reliability is high and be applicable to the fixed of miniature square bar.

In order to achieve the above object, the utility model provides a square bar fixing device, it includes the support and can dismantle the elastic component who connects in the support, and the support includes first fixed plate and the second fixed plate that mutually perpendicular connects, and the elastic component cross-over connection is in first fixed plate and second fixed plate.

Preferably, the bracket further comprises a third fixing plate connected to the same end of the first fixing plate and the second fixing plate, and a light inlet port penetrating through the third fixing plate; the square rod fixing device also comprises a grating which is fixedly contained in the light inlet opening.

Preferably, the first fixing plate, the second fixing plate and the third fixing plate are perpendicular to each other two by two.

Preferably, the elastic element comprises an elastic element main body which is bridged on the first fixing plate and the second fixing plate, and an elastic arm which is bent and extended from one side of the elastic element main body along the long axis to the joint of the first fixing plate and the second fixing plate.

Preferably, the resilient arm is recessed to form a catch with rounded corners.

Preferably, one side of the first fixing plate, which faces the elastic part, protrudes to form at least two boss parts distributed at intervals, each boss part comprises a first positioning boss and a second positioning boss which are respectively abutted to the second fixing plate, the first positioning bosses and the second positioning bosses are arranged in a staggered mode, and the height of each second positioning boss is smaller than that of each first positioning boss; the first positioning boss and the second positioning boss form a limiting space with the clamping groove.

Preferably, the orthographic projection of the spacing space towards the grating falls completely within the range of the grating.

Preferably, the first fixing plate and the second fixing plate are respectively provided with a threaded hole, and two opposite sides of the elastic element main body are respectively provided with a through hole which penetrates through the elastic element main body and is arranged corresponding to the threaded holes; the square bar fixing device also comprises a screw which passes through the through hole and forms thread fixing with the threaded hole and enables the elastic part main body to be fixed on the support.

Preferably, the elastic element further comprises a reinforcing rib which is protruded and extended from the elastic element main body, and the reinforcing rib is arranged opposite to the elastic arm and is respectively positioned at two opposite sides of the elastic element main body along the long axis of the elastic arm.

Preferably, the elastic members include two, and the two elastic members are parallel to each other and spaced apart from each other.

The utility model also provides an optical device, which comprises the square rod fixing device and the square rod; the square rod is supported on the support, and the elastic piece presses the square rod against the support to form fixation.

Compared with the prior art, the square bar fixing device of the utility model comprises a bracket and an elastic part which is detachably connected with the bracket, wherein the bracket comprises a first fixing plate and a second fixing plate which are mutually and vertically connected, and the elastic part is bridged on the first fixing plate and the second fixing plate; the optical equipment comprises the utility model discloses a square bar fixing device and a square bar, the square bar is supported on the first fixed plate and the second fixed plate, the elastic component presses the square bar against the first fixed plate and the second fixed plate and forms fixation, the application of the fixing device on the optical equipment can avoid the square bar from being influenced by the moment generated by the elastic component when the square bar is installed, so that the installation precision of the square bar is high and the position deviation is small, thereby the reliability of the square bar fixing device is high; meanwhile, the pressure between the elastic piece and the square rod is reduced by increasing the contact area, and the square rod is prevented from being crushed, so that the square rod fixing device can be also suitable for the miniature square rod.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of the square rod fixing device of the present invention;

FIG. 2 is an exploded perspective view of the square rod fixing device of the present invention;

fig. 3 is a schematic perspective view of the elastic member of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 5 is an enlarged view of a portion B shown in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a square bar fixing device 100 and an optical apparatus (not shown) using the square bar fixing device 100.

The square bar fixing device 100 comprises a support 1, an elastic part 2 and a grating 3, wherein the elastic part 2 is detachably connected to the support 1, and the grating 3 is fixed on the support 1.

The optical device includes a square bar fixing device 100 and a square bar 4, and the square bar 4 is fixedly supported by the square bar fixing device 100.

Specifically, support 1 is used for supporting fixed square rod and grating 3, and elastic component 2 bridges in support 1 and supports square rod 4 to support 1's direction and form fixedly, and square rod 4 sets up with grating 3 relative interval.

In the present embodiment, the bracket 1 includes a first fixing plate 11 and a second fixing plate 12 which are vertically connected to each other, a third fixing plate 13 which is connected to the same end of the first fixing plate 11 and the second fixing plate 12, and a light inlet port 130 which is formed through the third fixing plate 13; the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13 are perpendicular to each other two by two.

The square bar is fixedly supported on the bracket 1, and the elastic part 2 is bridged on the first fixing plate 11 and the second fixing plate 12 and presses the square bar against the bracket 1 to form fixation. That is, one end of the elastic member 2 is fixed to a side of the first fixing plate 11 away from the connection of the first fixing plate 11 and the second fixing plate 12, and the other end of the elastic member 2 is fixed to a side of the second fixing plate 12 away from the connection of the second fixing plate 12 and the first fixing plate 11.

Further, in order to facilitate the installation of the square bar 4, the bracket 1 is further provided with a boss portion 110 for positioning and supporting the square bar 4, and the boss portion 110 includes a first positioning boss 111 and a second positioning boss 112.

The first fixing plate 11 protrudes towards one side of the elastic member 2 to form at least two boss portions 110 distributed at intervals, each boss portion 110 includes a first positioning boss 111 and a second positioning boss 112 respectively abutted against the second fixing plate 12, the first positioning bosses 111 and the second positioning bosses 112 are arranged in a staggered manner, and the height of the second positioning bosses 112 is smaller than that of the first positioning bosses 111; the square rod 4 abuts against the first positioning boss 111 and the second positioning boss 112, respectively.

The grating 3 is fixedly accommodated in the light inlet port 130, the square rod 4 is opposite to the light inlet port 130 and extends along the optical axis direction (i.e. the X axis) of the light inlet port 130, and the two boss parts 110 are distributed at intervals along the optical axis direction (i.e. the X axis); more preferably, the orthographic projection of the square bar in the optical axis direction (X-axis) towards the grating 3 falls entirely within the range of the grating 3.

In the present embodiment, the square rod 4 includes four side surfaces respectively parallel to the optical axis direction (X axis) and two end surfaces perpendicular to the optical axis direction (X axis) and disposed opposite to the grating 3.

The side surface of the square rod 4 comprises a first surface 41 and a second surface 42 which are respectively parallel to the first fixing plate 11 and are oppositely arranged at intervals, and a third surface 43 and a fourth surface 44 which are respectively parallel to the second fixing plate 12 and are oppositely arranged at intervals, wherein the first surface 41 is adjacent to the third surface 43, and the second surface 42 is adjacent to the fourth surface 44; the first surface 41 is close to the first fixing plate 11 and abuts against the first positioning boss 111, the third surface 43 is close to the second fixing plate 12 and abuts against the second positioning boss 112, and the second surface 42 and the fourth surface 44 are close to the elastic member 2.

In the above structure, the boss portion 110 provides a positioning support for the square rod 4, so that the installation of the square rod 4 is more convenient, and the positioning accuracy of the square rod 4 is effectively improved.

It should be noted that the position where the boss portion is disposed is not limited to the first fixing plate, and the boss portion may also be disposed on the second fixing plate, that is, the first positioning boss and the second positioning boss are formed by protruding the second fixing plate; of course, it is also possible that the first positioning projection is formed by the first fixing plate being projected and the second positioning projection is formed by the second fixing plate being projected.

In the present embodiment, the elastic element 2 includes an elastic element main body 21 bridging the first fixing plate 11 and the second fixing plate 12, and an elastic arm 22 extending from the elastic element main body 21 along one side of the long axis thereof to the connection of the first fixing plate 11 and the second fixing plate 12; the resilient arms 22 are recessed to form a catch 220 with rounded corners.

The elastic arm 22 abuts against two adjacent side surfaces of the square bar 4 and close to the elastic element 2, that is, the elastic arm 22 abuts against the second surface 42 and the fourth surface 44 respectively; the elastic arm 22 includes a first arm 221 abutting against the second surface 42 and a second arm 222 abutting against the fourth surface 44, the first arm 221 and the second arm 222 are spaced to form a slot 220, and the right angle 40 formed by the second surface 42 and the fourth surface 44 is clamped in the slot 220.

The first positioning boss 111 and the second positioning boss 112 form a limiting space (not shown) with the card slot 220, and further, the orthographic projection of the limiting space towards the grating 3 completely falls within the range of the grating 3; the square rod 4 is fixedly accommodated in the limiting space, at the moment, the first arm 221 abuts against the second face 42, due to elastic deformation, the first arm 221 generates a compressive stress towards the first positioning boss 111 along the Y-axis direction, and the compressive stress enables the first face 41 to press towards the first positioning boss 111 and form fixation; the second arm 222 presses against the fourth surface 44, and due to the elastic deformation, the second arm 222 generates a compressive stress toward the second positioning boss 112 along the Z-axis direction, and the compressive stress causes the third surface 43 to press toward the second positioning boss 112.

In the structure, through the setting of the elastic arm 22, the support 1, the elastic part 2 and the square rod 4 are fixed in multiple points, the reliability of fixing the square rod 4 is ensured, the square rod fixing device 100 is suitable for the square rods with different sizes or different structural forms, the applicability of the fixing device 100 is enhanced, and the fixing device can be used for the miniature square rod with smaller fixed size.

Meanwhile, the fillet position of the first arm 221 abuts against the second surface 42, and the fillet position of the second arm 222 abuts against the fourth surface 44, so that the contact area between the elastic arm 22 and the square rod 4 is small, that is, the contact area between the elastic member 2 and the square rod 4 is increased, the pressure between the elastic member 2 and the square rod 4 is reduced, the square rod 4 is prevented from being damaged by the elastic arm 22, and the square rod fixing device 100 can also be applied to a miniature square rod under the condition that the square rod 4 is reliably fixed; simultaneously, 2 at the elastic component simultaneously support and press in two adjacent sides of square bar 4, when the installation, avoided the moment that elastic component 2 produced to produce harmful effects to square bar 4, improve the precision of square bar 4 installation, and reduce offset to make square bar fixing device 100's reliability high.

Furthermore, the elastic member 2 in this embodiment is generally a sheet metal member, the sheet metal member has a relatively thin thickness, and in order to avoid bending deformation of the elastic member main body 21 when the elastic arms 22 are pressed against the square rods 4, the elastic member 2 is further provided with reinforcing ribs 23 protruding and extending from the elastic member main body 21, and the reinforcing ribs 23 are disposed corresponding to the elastic arms 22 and respectively located on two opposite sides of the elastic member main body 21 along the long axis thereof; through the setting of strengthening rib 23, increased the thickness of the position that elastic component main part 21 and elastic arm 22 correspond for the position that has set up strengthening rib 23 is not flexible deformation, thereby further improves the reliability of elastic component 2, makes the fixed more reliable of square rod 4, has further improved square rod fixing device 100's reliability effectively.

Further, the number of the elastic members 2 is provided corresponding to the boss portion 110. For example, in the present embodiment, the boss portion 110 includes two, and the two elastic members 2 also include two, and the two elastic members 2 are arranged in parallel and spaced apart from each other. Of course, the number of the boss portion 110 and the elastic member 2 is not limited, and it may be specifically set according to the actual use requirement.

It is worth mentioning that the two opposite sides of the elastic member main body 21 are detachably connected to the first fixing plate 11 and the second fixing plate 12, respectively, in this embodiment, the detachable connection is realized by screw fastening.

It should be noted that the first fixing plate 11 and the second fixing plate 12 are respectively opened with a threaded hole 10, and the two opposite sides of the elastic member main body 21 are respectively opened with a through hole 210 penetrating therethrough and disposed corresponding to the threaded hole 10, and the through hole 210 may be an unthreaded hole or a threaded hole, in this embodiment, the elastic member 2 is a thin sheet metal member, and therefore the through hole 210 is generally an unthreaded hole.

The square bar fixing device 100 further comprises a screw 5, wherein the screw 5 passes through the through hole 210 to form threaded fixation with the threaded hole 10 and fix the elastic member main body 21 to the bracket 1.

Of course, the fixing mode of the elastic element and the bracket is not limited to the form of screw fastening, and it is also possible to fix the elastic element and the bracket by adopting other fixing modes of detachable connection, for example, the elastic element can be detachably buckled on the bracket, or the elastic element is provided with a convex column, and a hole is arranged on the fixing plate for matching.

Compared with the prior art, the square bar fixing device of the utility model comprises a bracket and an elastic part which is detachably connected with the bracket, wherein the bracket comprises a first fixing plate and a second fixing plate which are mutually and vertically connected, and the elastic part is bridged on the first fixing plate and the second fixing plate; the optical equipment comprises the utility model discloses a square bar fixing device and a square bar, the square bar is supported on the first fixed plate and the second fixed plate, the elastic component presses the square bar against the first fixed plate and the second fixed plate and forms fixation, the application of the fixing device on the optical equipment can avoid the square bar from being influenced by the moment generated by the elastic component when the square bar is installed, so that the installation precision of the square bar is high and the position deviation is small, thereby the reliability of the square bar fixing device is high; meanwhile, the pressure between the elastic part and the square rod is reduced by increasing the contact area, and the square rod is prevented from being damaged, so that the square rod fixing device can be also suitable for the miniature square rod.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. The square rod fixing device is characterized by comprising a support and an elastic piece detachably connected to the support, wherein the support comprises a first fixing plate and a second fixing plate which are vertically connected with each other, and the elastic piece is bridged on the first fixing plate and the second fixing plate.

2. The square bar fixing device according to claim 1, wherein the bracket further comprises a third fixing plate connected to the same end of the first fixing plate and the second fixing plate, and a light inlet port formed through the third fixing plate; the square rod fixing device further comprises a grating which is fixedly contained in the light inlet opening.

3. The square bar fixture of claim 2, wherein the first, second and third fixing plates are perpendicular to each other two by two.

4. The square bar fixing device according to claim 2, wherein the elastic member comprises an elastic member body bridging the first fixing plate and the second fixing plate, and an elastic arm extending from the elastic member body along one side of the long axis thereof to the joint of the first fixing plate and the second fixing plate.

5. The square bar fixture of claim 4, wherein the spring arms are recessed to form a catch with rounded corners.

6. The square bar fixing device according to claim 5, wherein the first fixing plate protrudes toward one side of the elastic member to form at least two boss portions spaced apart from each other, each boss portion includes a first positioning boss and a second positioning boss abutting against the second fixing plate, the first positioning bosses and the second positioning bosses are staggered, and the height of the second positioning bosses is smaller than that of the first positioning bosses; the first positioning boss and the second positioning boss form a limiting space with the clamping groove.

7. The square bar fixture of claim 6, wherein the orthographic projection of the spacing space toward the grating falls entirely within the range of the grating.

8. The square bar fixing device according to claim 4, wherein the first fixing plate and the second fixing plate are respectively provided with a threaded hole, and two opposite sides of the elastic member main body are respectively provided with a through hole which penetrates through the elastic member main body and is arranged corresponding to the threaded holes; the square rod fixing device further comprises a screw, and the screw penetrates through the through hole and the threaded hole to form threaded fixation and enable the elastic piece main body to be fixed on the support.

9. A square bar fixture according to claim 4, wherein the spring further comprises ribs projecting from the spring body, the ribs being disposed opposite the spring arms and on opposite sides of the spring body along the longitudinal axis thereof.

10. A square bar fixture according to claim 4, wherein said resilient members comprise two, said resilient members being arranged parallel to and spaced from each other.

11. An optical apparatus comprising the square-bar fixing device according to any one of claims 1 to 10 and a square bar; the square rod is supported on the support, and the elastic piece presses the square rod against the support to form fixation.