Telescopic electronic height ruler

Abstract

The utility model discloses a telescopic electronic height ruler which comprises a ruler body, a telescopic device used for extending the length of the ruler body is arranged at the bottom of the ruler body, the telescopic device comprises a base capable of moving in the ruler body, a fixed seat, a linear bearing and a shaft, the fixed seat is arranged in the ruler body, and the linear bearing is arranged on the fixed seat. One end of the shaft is fixed on the fixed seat through a first screw, the other end of the shaft is movably arranged in the base, and the other end of the shaft is provided with a second screw for limiting. The shaft is fixed in the ruler body through the fixing seat, then the moving direction of the base on the shaft is fixed through the linear bearing, the telescopic function between the base and the ruler body is achieved, the length of the ruler body is increased, and therefore the height measuring ruler can adapt to height testing of strong or obese people and has better universality.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic height rulers, in particular to a retractable electronic height ruler. Background Art

[0002] At present, the overall length of the electronic height rulers on the market is limited and cannot be extended. There are limitations in measuring the height of relatively strong or obese people, or the measurement cannot be completed due to a too large head circumference or a protruding belly. Note: The measurement method of this type of height ruler is that a person stands upright against the wall, places the height ruler on the top of the head, and measures the height through ultrasonic waves (measuring the distance from the top of the head to the ground without any obstruction in the middle). Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a retractable electronic height ruler.

[0004] To solve the above problems, the utility model adopts the following technical solutions.

[0005] A retractable electronic height ruler includes a ruler body. A telescopic device for extending the length of the ruler body is provided at the bottom of the ruler body. The telescopic device includes a base, a fixed seat, a linear bearing and a shaft that can move inside the ruler body. The fixed seat is arranged inside the ruler body. One end of the shaft is fixed to the fixed seat by a first screw, and the other end is movably arranged inside the base. A second screw is provided at the other end of the shaft for limiting.

[0006] As a further improvement of the utility model, a cylinder is provided on the telescopic device. A spring is sleeved on the cylinder, and a ball is provided on the spring. A plurality of through holes adapted to the balls are opened in the ruler body from top to bottom.

[0007] Advantages of the Utility Model

[0008] Compared with the prior art, the advantages of the utility model are as follows:

[0009] The utility model fixes the shaft in the ruler body through the fixed seat, and then fixes the moving direction of the base on the shaft through the linear bearing, realizing the telescopic function between the base and the ruler body to extend the length of the ruler body, so as to be able to adapt to the height measurement of strong or obese people and has better versatility. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of the utility model.

[0011] Figure 2 It is a first structural split schematic diagram of the utility model.

[0012] Figure 3This is a cross-sectional view of the present utility model.

[0013] Figure 4 This is a schematic diagram of the second structural split of the present utility model. Detailed implementation manners

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0015] Please refer to Figures 1 to 4 , a telescopic electronic height ruler, including a ruler body 1, a telescopic device for extending the length of the ruler body 1 is arranged at the bottom of the ruler body 1. The telescopic device includes a base 21, a fixed seat 22, a linear bearing 23 and a shaft 24 that can move inside the ruler body 1. The fixed seat 22 is arranged inside the ruler body 1. One end of the shaft 24 is fixed to the fixed seat 22 by a first screw 25, and the other end is movably arranged inside the base 21. A second screw 26 is arranged at the other end of the shaft 24 for limiting. The present utility model fixes the shaft 24 inside the ruler body 1 through the fixed seat 22, and then fixes the moving direction of the base 21 on the shaft 24 through the linear bearing 23, realizing the telescopic function between the base 21 and the ruler body 1 to extend the length of the ruler body 1, so as to be able to adapt to the height measurement of strong or obese people and have better versatility.

[0016] In order to limit the telescopic device in the extended state, a cylinder is arranged on the telescopic device. A spring 31 is sleeved on the cylinder, and a ball 32 is arranged on the spring 31. A plurality of through holes 11 adapted to the ball 32 are opened in the ruler body 1 from top to bottom. The cooperation of the ball 32 and the spring 31 can realize the push to disengage from the through hole 11. Then when the base 21 is extended, the ball 32 will protrude from the next through hole 11 under the action of the spring 31 to achieve limit fixation.

[0017] The above is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solutions and their improved concepts of the present utility model, makes equivalent replacements or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. A retractable electronic height ruler, characterized in that, It includes a ruler body, and a telescopic device for extending the length of the ruler body is provided at the bottom of the ruler body. The telescopic device includes a base, a fixed seat, a linear bearing and a shaft that can move inside the ruler body. The fixed seat is arranged inside the ruler body. One end of the shaft is fixed on the fixed seat by a first screw, and the other end is movably arranged inside the base. A second screw is arranged at the other end of the shaft for limiting.

2. The retractable electronic height ruler according to claim 1, wherein: A cylinder is arranged on the telescopic device, a spring is sleeved on the cylinder, a ball is arranged on the spring, and a plurality of through holes adapted to the balls are opened on the ruler body from top to bottom.

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