CN202676159U - Height positioning scale - Google Patents

Abstract

The utility model is suitable for a positioner field provides a height positioning scale, include a chassis and locate outer sleeve on the chassis be equipped with a telescopic inner skleeve in the outer sleeve have the scale mark of sign height on the outer wall of inner skleeve the upper portion of inner skleeve is equipped with the illuminator that can be to the direction light-emitting of the center pin of perpendicular to inner skleeve. The utility model provides a height positioning scale adopts the light that the illuminator sent to come the meaning height, and is visual good, and need not keep on human eye and object bottom surface are in same horizontal plane, has avoided the error that human eye observation caused for the test result is more accurate. Moreover, the ruler is simple in structure, low in cost, convenient to operate and move, suitable for various height positioning occasions and particularly suitable for object drop tests.

Description

a height gauge

technical field

The utility model belongs to the field of positioning devices, in particular to a height positioning scale.

Background technique

In laboratory testing work, product packaging drop tests are often done. According to the provisions of the national standard GB4857, during the drop test process, there are certain requirements for the height of the package drop, and different package weights correspond to different drop heights. The current laboratory test method is: put a height gauge next to the object to be tested, then place the packaging box at a certain height, observe with the naked eye whether the bottom of the packaging box reaches the required height, and then perform a drop test. During this process, the packaging box will not be very close to the scale, so as to avoid inconvenience in operation, there is a distance between the scale and the packaging box, and they are not in the same vertical space. In this way, when the operator observes with the naked eye whether the bottom of the packing box is equal to the predetermined height scale on the scale, the height of the human eye will inevitably be higher or lower than the bottom height of the packing box, causing the height perceived by the human eye to be different from the actual height. If it does not match, it will cause the error of the drop height, which will bring errors to the product test.

Utility model content

The purpose of the utility model is to provide a height positioning scale used in drop testing, which solves the problem of height positioning error caused by inaccurate naked eye perception.

The utility model is achieved in this way. A height positioning scale includes a chassis and an outer sleeve arranged on the chassis. A retractable inner sleeve is arranged in the outer sleeve. The outer wall of the barrel is provided with graduation marks representing the height, and a light emitter capable of emitting light in a direction perpendicular to the central axis of the inner sleeve is provided on the upper part of the inner sleeve.

Further, the outer wall of the inner sleeve is provided with a slide groove parallel to the central axis of the inner sleeve, and the inner wall of the outer sleeve is provided with a slide rail matched with the slide groove.

Further, the length of the slide rail is shorter than the length of the chute and is arranged on the upper part of the inner wall of the outer sleeve, and the end of the chute extending toward the chassis ends between the lower edge of the inner sleeve and form a limiting slot.

Further, the inner sleeve is compressed and fixed by a fixing member passing through the outer sleeve and the slide rail.

Further, the light emitter is arranged at an angle of 90° to the chute and the slide rail.

Specifically, the light emitter is a laser pointer.

Further, two symmetrical through holes for assembling the laser pointer are provided on the upper part of the inner sleeve.

Further, a locking screw for locking the laser pointer is provided on the top of the inner sleeve.

Further, the bottom of the locking screw is provided with a bar-shaped groove matching the shape of the laser pointer body, so that the pen body can be embedded in the bar-shaped groove to lock the laser pointer.

Further, the lower edge of the outer sleeve is provided with external threads, and the chassis is provided with threaded holes matching the external threads.

The height positioning scale provided by the utility model adopts the combination of the inner and outer sleeves that can be relatively stretched to determine the height, and indicates the height through the light emitted by the light emitter, which has good visibility and does not need to keep the human eye and the bottom surface of the object at the same On the horizontal plane, errors caused by human eye observation are avoided, making the test results more accurate. Moreover, the scale has a simple structure, low cost, and is easy to operate and move, and is suitable for various height positioning occasions, especially suitable for object drop testing.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the height positioning scale embodiment of the present utility model;

Fig. 2 is the exploded structure schematic diagram of the utility model height positioning ruler embodiment;

Fig. 3 is the three-dimensional structure schematic diagram of the inner sleeve in the embodiment of the height positioning scale of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of an assembled inner sleeve and an outer sleeve in an embodiment of the height positioning scale of the present invention;

Fig. 5 is a three-dimensional structural schematic diagram of the locking member in the embodiment of the height positioning scale of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Figures 1 and 2 respectively show a three-dimensional and exploded schematic view of a specific embodiment of the height positioning scale of the present invention. For the convenience of description, only the parts related to this embodiment are shown.

The height positioning scale includes a chassis 101, and an outer sleeve 102 is arranged on the chassis 101. It can be understood that the chassis 101 is usually an object with a certain thickness and weight, and can be stably positioned on the ground or a table. In the drop test , the chassis 101 is usually placed on a certain level. A retractable inner sleeve 103 is arranged in the outer sleeve 102, and a light emitter 104 is arranged on the upper part of the inner sleeve 103 (it may be close to the upper edge), and the light emitter 104 can be perpendicular to the central axis of the inner sleeve 103. It emits colored light in the direction of , and its beam is so narrow that its diameter can be ignored. The outer sleeve 102 and the inner sleeve 103 are generally perpendicular to the bottom surface of the chassis 101 and further perpendicular to the horizontal plane, so the light emitted by the light emitter 104 can be parallel to the horizontal plane. In addition, the outer wall of the inner sleeve 103 is engraved with a scale line representing the height (not shown in the figure). The scale value represents the height of the horizontal light emitted by the light emitter 104 from the bottom of the chassis 101 , that is, the height from the horizontal ground or supporting platform.

When using the height positioning scale for drop testing, the inner sleeve 103 is stretched to a corresponding height and fixed in advance. The stretched height is determined by the scale line on the inner sleeve 103, and then the light emitter 104 is turned on to lift the object upwards. , so that the bottom is at the same height as the horizontal light beam emitted by the illuminator 104, and then the drop test is performed. After the test, the light emitter 104 is turned off, and the inner sleeve 103 is retracted into the outer sleeve 102 to save space.

Because the horizontal light beam is used to indicate the height, the visibility is good, so that the operator can accurately grasp the height at any position, and it is not necessary to keep the line of sight horizontally aligned with the bottom of the object and the reticle representing the preset height as in the traditional method. The accuracy of height positioning is greatly improved, and it is more convenient to operate.

In this embodiment, the scale line on the inner sleeve 103 can be scored after the inner sleeve 103 and the outer sleeve 102 are assembled. Because the height of the bottom of the object is determined by looking at the scale line aligned with the top of the outer sleeve 102, then after the outer sleeve 102 is installed, the length of its exposure above the chassis 101 will directly affect the corresponding scale at the top Therefore, when there is an error between the assembly height of the outer sleeve 102 and the preset height, measurement errors will be brought. Therefore, in this embodiment, after the inner and outer sleeves are assembled, the scale marking can ensure the accuracy of height positioning.

The outer sleeve 102 in this embodiment can be fixed on the chassis 101 in various ways. Referring to FIG. 2 , an external thread 1021 can be provided at the lower edge of the outer sleeve 102 , and a threaded hole 1011 can be provided on the chassis 101 to screw the outer sleeve 102 into the chassis 101 for fixing. It can also be directly welded or inserted into the chassis 101 , or directly integrally formed with the chassis 101 . This embodiment is preferably threaded, so as to facilitate assembly, disassembly, maintenance and portability.

As shown in Figures 2, 3, and 4, as an improvement of this embodiment, a chute 1031 parallel to the central axis of the inner sleeve 103 can be opened on the outer wall of the inner sleeve 103, and on the inner wall of the outer sleeve 102 A slide rail 1022 matched with the slide groove 1031 is provided. In this way, the movable orientation of the inner sleeve 103 can be restricted, the inner sleeve 103 can be prevented from rotating during the expansion and contraction process, so that the scale can be checked easily, and the light emitting direction of the light emitter 104 can be prevented from changing randomly, which is not convenient for testing. Certainly, the light emitter 104 is arranged at 90° to the chute and the slide rail, and the light emitted by it is perpendicular to the orientation of the chute and the slide rail.

Preferably, the length of the slide rail 1022 is much shorter than the length of the slide groove 1031, and it is located on the upper part of the inner wall of the outer sleeve. At the same time, the end of the slide groove 1031 extending toward the chassis can end at a certain distance from the lower edge of the inner sleeve. A limiting slot 1032 is formed at the end thereof. In this way, when the inner sleeve 103 protrudes upwards, when the outer sleeve 102 is about to be drawn out, one end of the slide rail 1022 will abut against the limiting groove 1032 , thereby preventing the inner sleeve 103 from continuing to be drawn out.

Further referring to Fig. 2, present embodiment can offer a hole 1023 on the outer sleeve 102, get a fixing piece 105 to penetrate this hole 1023, and make its end compress on the inner sleeve 103, make the inner sleeve 103 and the The frictional force between the fixing member 105 and the outer sleeve 102 increases, thereby fixing the inner sleeve 103 . Specifically, the fixing member 105 can be a screw or other parts that can be freely inserted and loosened.

Referring to Fig. 4, preferably, the hole 1023 can be located at the slide rail 1022 on the inner wall of the outer sleeve 102, so that the fixing member 105 is inserted from the slide rail 1022, and its end just abuts against the slide groove on the inner sleeve 103 1031 in. Because the thickness of the outer sleeve 102 is usually relatively thin, if the hole is opened at a non-slide, the penetration depth of the fixing piece 105 must be very limited. Falling off brings inconvenience to the testing work. In this embodiment, holes are made at the slide rail 1022 of the outer sleeve 102. Since the slide rail 1022 has a certain thickness, the length of the fixing part 105 stretching into the outer sleeve 102 is longer, and it is not easy to unscrew the fixing part 105. fall off, thereby avoiding the loss of the fixing part 105 and facilitating operation.

In this embodiment, the light emitter 104 is preferably a laser pointer, whose emitted light has better collimation and a narrower beam, which can be approximated as a straight line. In this way, the height can be determined more accurately, and the height error caused by the diameter of the beam itself can be avoided.

Further referring to FIG. 3 , in order to fix the laser pointer, two symmetrical through-holes 1033 can be opened in the upper part of the inner sleeve 103 near the upper edge, and the laser pointer can be passed through the two through-holes 1033 to achieve fixing.

Furthermore, a locking member 106 may also be provided on the top of the inner sleeve 103, specifically a locking screw, to further lock the laser pointer and prevent it from sliding. As shown in FIG. 5 , a bar-shaped groove 1061 matching the shape of the laser pointer body (such as a circle, a square, etc.) can also be provided at the bottom of the locking member 106 . When the laser pointer is locked, the body of the laser pointer fits into the bar-shaped groove 1061 so that it cannot slide up and down, which further enhances the stability of the laser pointer and increases the accuracy of height positioning.

The height positioning scale provided by the utility model uses the horizontal light emitted by the light emitter to indicate the height, has good visibility, and does not need to keep the human eye and the bottom surface of the object on the same horizontal plane, thereby avoiding the error caused by the human eye observation, making the test The result is more accurate. Moreover, the scale is relatively easy to operate and move, and is suitable for various height positioning occasions.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. altitude location scale, it is characterized in that, comprise a chassis and be located at outer sleeve on the described chassis, in described outer sleeve, be provided with a telescopic inner sleeve, have the scale mark that characterizes height at the outer wall of described inner sleeve, being provided with on the top of described inner sleeve can be to the illuminator perpendicular to the light-emitting directions of the central shaft of inner sleeve.

2. altitude location scale as claimed in claim 1 is characterized in that, the outer wall of described inner sleeve is provided with the chute with the central axes of inner sleeve, is provided with the slide rail that cooperates with described chute at the inwall of described outer sleeve.

3. altitude location scale as claimed in claim 2, it is characterized in that, the length of described slide rail is less than the length of described chute and be located at the top of described outer sleeve inwall, and the end that described chute extends to described chassis ends on the lower limb of described inner sleeve and forms a stopper slot.

4. altitude location scale as claimed in claim 2 or claim 3 is characterized in that, described inner sleeve is fixed by a fixture that passes described outer sleeve and slide rail.

5. altitude location scale as claimed in claim 2 is characterized in that, described illuminator is 90 ° of angles with described chute and slide rail and arranges.

6. such as claim 1,2,3 or 5 described altitude location scales, it is characterized in that, described illuminator is laser pen.

7. altitude location scale as claimed in claim 6 is characterized in that, is provided with the through hole be used to two symmetries of assembling described laser pen on the top of described inner sleeve.

8. altitude location scale as claimed in claim 6 is characterized in that, is provided with at the top of described inner sleeve for the lock-screw with described laser pen locking.

9. altitude location scale as claimed in claim 8 is characterized in that, the bottom of described lock-screw is provided with the bar-shaped trough that the figure shape is complementary with described laser pen, and described body can be embedded in the described bar-shaped trough so that described laser pen is locked.

10. altitude location scale as claimed in claim 1 is characterized in that, the lower edge of described outer sleeve is provided with external thread, and described chassis is provided with the threaded hole that matches with described external thread.

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