A gap measuring device

Abstract

This utility model discloses a gap measuring device. An inflation unit inflates the inflation chamber, which in turn lifts a push rod. The push rod touches the other side of the gap, and the user can calculate the distance of the gap using the scale on the push rod, making the device convenient for measuring gap distances. Furthermore, an adjustable air pressure is achieved through an exhaust structure via a second hollow bolt, preventing pressure rebound when the push rod touches one side of the gap. This allows for manual testing from the outside. A whistle sounds when the exhaust structure leaks, alerting the user.

Description

Technical Field

[0001] This utility model relates to the field of gap measurement technology, and in particular to a gap measuring device. Background Technology

[0002] Measuring small gaps in enclosed spaces, such as the distance between a battery terminal and a metal vehicle cover, the distance between exposed wiring and a metal plate, and gaps that need to be measured in cranes, motor vehicles on site, amusement facilities, etc., gaps that cannot be measured with ordinary tools such as rulers in enclosed spaces, or gaps that are inconvenient to measure.

[0003] Therefore, a gap measuring device is needed to solve the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A gap measuring device includes a housing, an inner sleeve, a push rod, and an inflation unit;

[0006] The push rod is movably located inside the inner sleeve; the inner sleeve is fixedly located inside the outer shell, forming an inflation cavity between the inner sleeve and the outer shell; the inflation unit is connected to the inflation cavity and is used to inflate the inflation cavity, thereby lifting the push rod; two fixing grooves are symmetrically arranged on the side wall of the outer shell, and a first spring is installed in each fixing groove; one end of the first spring is fixedly connected to the fixing groove, and the other end is fixedly connected to a locking ball; two groove groups are symmetrically arranged on the inner sleeve, each groove group including several vertically distributed grooves, which are used to match the corresponding locking balls; the push rod is provided with a scale; the gap measuring device also includes an exhaust structure, which is connected to the inflation cavity and is used to depressurize the inflation cavity when a certain pressure is reached in the inflation cavity.

[0007] Furthermore, the scale on the push rod is vertically set on the outer wall of the push rod.

[0008] Preferably, the inflation unit includes an inflation ball, an air supply pipe, a hollow bolt, a second spring, and a rubber ball. An air inlet groove is provided inside the outer shell, communicating with the inflation cavity. One end of the second spring is fixedly connected to the rubber ball, and the other end is fixedly connected to the air inlet groove. The second spring is disposed within the air inlet groove. One end of the hollow bolt is disposed within the air inlet groove, and the other end is connected to the air supply pipe, which communicates with the inflation ball. The rubber ball is disposed on one side of the hollow bolt and is used to block or open the opening at one end of the hollow bolt.

[0009] Preferably, the exhaust structure includes an exhaust pipe, a third spring, a third rubber ball, and a second hollow bolt; the exhaust pipe is fixedly connected to the outer shell, and the lower part of the exhaust pipe is connected to the inflation chamber; the screw of the second hollow bolt is threadedly connected to the inner wall of the upper end of the exhaust pipe; the third spring is disposed inside the exhaust pipe, and both ends of the third spring are respectively connected to the third rubber ball and one end of the second hollow bolt; a whistle is disposed in the opening at the upper end of the second hollow bolt; the third rubber ball is disposed above the connection between the exhaust pipe and the inflation chamber, and the third rubber ball is used to seal the connection between the exhaust pipe and the inflation chamber.

[0010] Preferably, the inflation ball has the same inflation principle and structure as the inflation ball of existing blood pressure monitors.

[0011] Preferably, two sealing rings are provided at the upper and lower ends of the gap between the outer shell and the inner sleeve, and the sealing rings are used to seal the gap between the outer shell and the inner sleeve.

[0012] Preferably, a clamping device is provided at the bottom of the housing, which is used to clamp one side of the measuring gap.

[0013] Preferably, the clamping device includes a fixed plate; the fixed plate is fixedly connected to the bottom of the housing, and two sliders are symmetrically and slidably connected on the fixed plate; two clamping springs are symmetrically arranged on the fixed plate, one end of the clamping spring is fixedly connected to the fixed plate, and the other end is fixedly connected to the corresponding slider.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] Inflation is applied to the inflation chamber via the inflation unit, which in turn lifts the push rod. The push rod touches the other side of the gap, and the user can calculate the distance of the gap using the scale on the push rod, making the device convenient for measuring the distance of the gap.

[0016] Secondly, the adjustable air pressure can be introduced or removed through the second hollow bolt via the exhaust structure, preventing the push rod from rebounding due to pressure when it hits one side of the gap. This can be manually tested from the outside. When the exhaust structure leaks air, a whistle will sound to alert the user. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the gap measuring device of this utility model.

[0019] Explanation of main component symbols

[0020] Casing 11 Inner sleeve 12 Top rod 13 Inflation unit 14 Inflatable cavity 10 Fixed slot 111 First spring 112 Locked ball 113 Groove 114 Inflatable Balloon 141 Gas Pipeline 142 Hollow bolt 143 Second spring 144 Rubber ball 145 140 air intake slot Exhaust pipe 31 Third spring 32 Third rubber ball 33 Second hollow bolt 34 Whistle 35 Sealing ring 110

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to imply non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Please see Figure 1 This utility model provides a gap measuring device, including a housing 11, an inner sleeve 12, a top rod 13, and an inflation unit 14;

[0025] The push rod 13 is movably disposed inside the inner sleeve 12; the inner sleeve 12 is fixedly disposed inside the outer shell 11, forming an inflation cavity 10 between the inner sleeve 12 and the outer shell 11; the inflation unit 14 is connected to the inflation cavity 10, and the inflation unit 14 is used to inflate the inflation cavity 10, thereby lifting the push rod 13; two fixing grooves 111 are symmetrically disposed on the side wall of the outer shell 11, and a first spring 112 is disposed in each fixing groove 111; one end of the first spring 112 is fixedly connected to the fixing groove 111, and the other end is fixedly connected to a locking ball 113; two groove groups are symmetrically disposed on the inner sleeve 12, and each groove group includes several vertically distributed grooves 114, which are used to match the corresponding locking ball 113; the push rod 13 is provided with a scale; the gap measuring device also includes an exhaust structure, which is connected to the inflation cavity 10, and is used to depressurize the inflation cavity 10 when a certain pressure is reached inside the inflation cavity 10.

[0026] When the push rod 13 moves upward, the locking ball 113 retracts into the corresponding fixing groove 111. When the push rod 13 moves upward to the corresponding height, the corresponding locking ball 113 is received in the corresponding groove 114, thereby holding the push rod 13 at the corresponding height.

[0027] Furthermore, the scale of the push rod 13 is vertically set on the outer wall of the push rod 13.

[0028] In one embodiment of this utility model, the inflation unit 14 includes an inflation ball 141, an air supply pipe 142, a hollow bolt 143, a second spring 144, and a rubber ball 145. An air inlet groove 140 is provided inside the outer shell 11, which is connected to the inflation cavity 10. One end of the second spring 144 is fixedly connected to the rubber ball 145, and the other end is fixedly connected to the air inlet groove 140. The second spring 144 is disposed in the air inlet groove 140. One end of the hollow bolt 143 is disposed in the air inlet groove 140, and the other end of the hollow bolt 143 is connected to the air supply pipe 142, which is connected to the inflation ball 141. The rubber ball 145 is disposed on one side of the hollow bolt 143 and is used to block or open the opening at one end of the hollow bolt 143. In use, one end of the hollow bolt 143 is inflated by manually squeezing the inflatable balloon 141. The gas pushes open the rubber ball 145 and enters the inflation chamber 10, which in turn pushes the push rod 13 upward. When inflation stops, the second spring 144 returns to its original position, allowing the rubber ball 145 to reseal the hollow bolt 143.

[0029] In one embodiment of this utility model, the exhaust structure includes an exhaust pipe 31, a third spring 32, a third rubber ball 33, and a second hollow bolt 34. The exhaust pipe 31 is fixedly connected to the outer shell 11, and the lower part of the exhaust pipe 31 is connected to the inflation chamber 10. The screw of the second hollow bolt 34 is threadedly connected to the inner wall of the upper end of the exhaust pipe 31. The third spring 32 is disposed inside the exhaust pipe 31, and both ends of the third spring 32 are respectively connected to the third rubber ball 33 and one end of the second hollow bolt 34. A whistle 35 is disposed in the upper opening of the second hollow bolt 34. The third rubber ball 33 is disposed above the connection between the exhaust pipe 31 and the inflation chamber 10, and the third rubber ball 33 is used to seal the connection between the exhaust pipe 31 and the inflation chamber 10.

[0030] When the pressure in the inflation chamber 10 is too high, the third rubber ball 33 is pushed upwards, and the gas in the inflation chamber 10 enters the exhaust pipe 31. It then passes through the whistle via the second hollow bolt 34, producing a sound. By adjusting the length of the second hollow bolt 34 inserted into the exhaust pipe 31, the pressure at which the third rubber ball 33 can be pushed up can be adjusted. The user can tell from the whistle that the push rod 13 has reached the other side of the gap and cannot be moved, at which point inflation of the inflation chamber 10 can be stopped, and the markings on the push rod 13 can be observed.

[0031] In one embodiment of this utility model, the inflation ball 141 is consistent with the inflation ball principle and structure of the existing blood pressure monitor.

[0032] In one embodiment of the present invention, two sealing rings 110 are respectively provided at the upper and lower ends of the gap between the outer shell 11 and the inner sleeve 12. The sealing rings 110 are used to seal the gap between the outer shell 11 and the inner sleeve 12.

[0033] Furthermore, one sealing ring 110 is fixedly connected to the inner wall of the outer shell 11, and the other sealing ring 110 is fixedly connected to the outer wall of the inner sleeve 12.

[0034] Alternatively, both sealing rings 110 are fixedly connected to the inner wall of the outer shell 11 and the outer wall of the inner sleeve 12.

[0035] In one embodiment of the present invention, a clamping device is provided at the bottom of the outer shell 11, which is used to clamp one side of the measuring gap.

[0036] In one embodiment of this utility model, the clamping device includes a fixing plate 41; the fixing plate 41 is fixedly connected to the bottom of the outer shell, and two sliders 42 are symmetrically and slidably connected on the fixing plate 41; two clamping springs 43 are symmetrically arranged on the fixing plate 41, one end of the clamping spring 43 is fixedly connected to the fixing plate 41, and the other end is fixedly connected to the corresponding slider 42. Clamping is achieved by pulling the two sliders 42 apart, causing the sliders to be located on both sides of one side of the measuring end, thus clamping one side of the measuring end.

[0037] For example, when measuring the distance between the forklift battery terminal and the metal cover, the battery is located under the forklift seat cover. In a confined space, it is impossible to measure with ordinary tools such as a ruler. When measuring, the device is placed on the battery terminal, and the clamping device clamps the terminal to prevent it from falling off due to collision. The inflatable ball 141 is located outside the cover and is connected to the device through an air tube.

[0038] When using this invention, the device is placed on one side of the gap to be measured, and air is injected into the air chamber 10 through the air inflation unit 14, which in turn lifts the top rod 13. The top rod 13 touches the other side of the gap, and air is continued to be added. The air is released from the exhaust structure. The user can calculate the distance of the gap by the scale on the top rod 13 (the distance of the gap is the scale on the top rod 13 plus the height of the gap measuring device before it extends out of the top rod 13).

[0039] Secondly, the adjustable air pressure can be introduced or removed through the second hollow bolt 34 via the exhaust structure, so that the push rod 13 will not experience pressure rebound when it hits one side of the gap. This can be manually tested from the outside. When the exhaust structure leaks air, the whistle 35 will make a sound to remind the user.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A gap measuring device, characterized in that: Includes outer shell, inner sleeve, push rod, and inflation unit; The push rod is movably located inside the inner sleeve; the inner sleeve is fixedly located inside the outer shell, forming an inflation cavity between the inner sleeve and the outer shell; the inflation unit is connected to the inflation cavity and is used to inflate the inflation cavity, thereby lifting the push rod; two fixing grooves are symmetrically arranged on the side wall of the outer shell, and a first spring is installed in each fixing groove; one end of the first spring is fixedly connected to the fixing groove, and the other end is fixedly connected to a locking ball; two groove groups are symmetrically arranged on the inner sleeve, each groove group including several vertically distributed grooves, which are used to match the corresponding locking balls; the push rod is provided with a scale; the gap measuring device also includes an exhaust structure, which is connected to the inflation cavity and is used to depressurize the inflation cavity when a certain pressure is reached in the inflation cavity.

2. The gap measuring device as described in claim 1, characterized in that: The inflation unit includes an inflation ball, an air supply pipe, a hollow bolt, a second spring, and a rubber ball. An air inlet groove is provided inside the outer shell, communicating with the inflation chamber. One end of the second spring is fixedly connected to the rubber ball, and the other end is fixedly connected to the air inlet groove. The second spring is located inside the air inlet groove. One end of the hollow bolt is located inside the air inlet groove, and the other end is connected to the air supply pipe, which is connected to the inflation ball. The rubber ball is located on one side of the hollow bolt and is used to block or open the opening at one end of the hollow bolt.

3. The gap measuring device as described in claim 1, characterized in that: The exhaust structure includes an exhaust pipe, a third spring, a third rubber ball, and a second hollow bolt. The exhaust pipe is fixedly connected to the outer shell, and its lower part is connected to the inflation chamber. The screw of the second hollow bolt is threaded to the inner wall of the upper end of the exhaust pipe. The third spring is installed inside the exhaust pipe, and its two ends are respectively connected to the third rubber ball and one end of the second hollow bolt. A whistle is installed in the opening at the upper end of the second hollow bolt. The third rubber ball is located above the connection between the exhaust pipe and the inflation chamber and is used to seal the connection between the exhaust pipe and the inflation chamber.

4. The gap measuring device as described in claim 1, characterized in that: Two sealing rings are provided at the upper and lower ends of the gap between the outer shell and the inner sleeve, and the sealing rings are used to seal the gap between the outer shell and the inner sleeve.

5. The gap measuring device as described in claim 1, characterized in that: A clamping device is provided at the bottom of the housing, which is used to clamp one side of the measuring gap.

6. The gap measuring device as described in claim 5, characterized in that: The clamping device includes a fixed plate; the fixed plate is fixedly connected to the bottom of the housing, and two sliders are symmetrically and slidably connected on the fixed plate; two clamping springs are symmetrically arranged on the fixed plate, one end of the clamping spring is fixedly connected to the fixed plate, and the other end is fixedly connected to the corresponding slider.

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