Blocking mechanism capable of changing movement direction

Abstract

The utility model provides a blocking mechanism capable of changing the movement direction, and relates to the technical field of helium detection vacuum boxes, the blocking mechanism comprises a base, a fixed seat and a first baffle block, the top of the base is provided with a linear module, and the telescopic end of the linear module is hinged with a connecting piece; the fixing base is located on one side of the base. The connecting piece is hinged to the fixing base. The first stop block is arranged at the other end of the connecting piece; when the linear module operates, the telescopic end of the linear module drives the connecting piece to move, and the connecting piece rotates with the connecting point of the connecting piece and the fixing base as the circle center, so that the first check block moves. According to the blocking mechanism, the position of the air cylinder stopper in the helium detection vacuum box can be changed, the telescopic movement direction of the air cylinder can be changed, and therefore the blocking mechanism is suitable for blocking and limiting workpieces at different positions in the helium detection vacuum box.

Description

Technical Field

[0001] This utility model relates to the field of helium detection vacuum chamber technology, specifically to a blocking mechanism that can change the direction of movement. Background Technology

[0002] The helium vacuum chamber, based on the basic leak detection principle of helium leak detection, uses helium as a tracer gas. Helium is filled into the workpiece in the vacuum chamber, and then the helium leak detector can determine the helium recovery rate with high precision and speed.

[0003] Currently, when performing helium testing on workpieces inside a helium testing vacuum chamber, a cylinder stopper is installed at the bottom of the chamber. This cylinder stopper, through its extension and retraction, blocks the workpiece, achieving an immediate stop. However, when there is insufficient space at the bottom of the vacuum chamber due to various factors, it affects the installation and use of the cylinder stopper, thus impacting the helium testing of the workpiece. Utility Model Content

[0004] This invention addresses the problem that insufficient space at the bottom of a helium vacuum chamber affects the use of the cylinder stopper. It provides a blocking mechanism with a changeable direction of movement, which can not only change the position of the cylinder stopper inside the helium vacuum chamber, but also change the direction of the cylinder's extension and retraction, thereby adapting to blocking and limiting the workpiece at different positions inside the helium vacuum chamber.

[0005] The technical solution adopted in this utility model is:

[0006] A blocking mechanism capable of changing the direction of movement is provided, comprising:

[0007] The base has a linear module on its top, with a connector hinged to the telescopic end of the linear module; a fixed seat is located on one side of the base, and the connector is hinged to the fixed seat; a first stop is located at the other end of the connector; when the linear module is running, the telescopic end of the linear module drives the connector to move, and the connector rotates about its connection point with the fixed seat as the center, causing the first stop to move.

[0008] Optionally, the linear module includes: a cylinder located on the top of the base; a first connecting rod located at the working end of the cylinder, the other end of which has a first pin hole.

[0009] Optionally, the connector includes: a second connecting rod, one end of which has a first through hole, and the second connecting rod has a second pin hole at its middle position; a first pin shaft, located inside the first through hole and the first pin hole, for hinged connection of the first connecting rod and the second connecting rod; a second pin shaft, located inside the second pin hole; and a third pin hole is provided on the outer wall of the fixing seat, the second pin shaft being located inside the second pin hole and the third pin hole, for hinged connection of the fixing seat and the second connecting rod.

[0010] Optionally, the other end of the second connecting rod is provided with a second through hole, the outer wall of the first stop is provided with a fourth pin hole, and the outer wall of the first stop is provided with a third pin located inside the second through hole and the fourth pin hole, for hinged connection of the first stop and the second connecting rod.

[0011] Optionally, the first through hole is a first strip hole, and the second through hole is a second strip hole.

[0012] Optionally, a limiting seat is provided on the outer wall of the fixed seat, and a first limiting groove is provided on the outer wall of the limiting seat. The first stop block is slidably connected to the limiting seat through the first limiting groove.

[0013] Optionally, a limiting block is provided on the outer wall surface of the limiting seat, and a second limiting groove is provided on the outer wall surface of the limiting block facing the limiting seat; the concave surface of the second limiting groove is opposite to the concave surface of the first limiting groove, and the first stop block is also slidably connected to the limiting block through the second limiting groove.

[0014] Optionally, the top of the base is provided with a guide seat, and a guide hole is provided on the side wall of the guide seat. The first connecting rod is slidably connected to the guide seat through the guide hole.

[0015] Optionally, the second connecting rod is a V-shaped connecting rod, and the second pin hole is located at the fold in the middle of the V-shaped connecting rod.

[0016] Optionally, a second stop is provided on the top of the first stop, and the contact area between the second stop and the first stop is smaller than the top area of ​​the first stop.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting a base and a fixed seat, and setting a linear module on the top of the base, the effect of disassembly and installation can be achieved. That is, when the inner bottom space of the helium detection vacuum chamber is insufficient, the base and fixed seat can be disassembled and installed on the inner wall of the helium detection vacuum chamber to change the position of the blocking mechanism, so as to avoid the insufficient inner bottom space of the helium detection vacuum chamber affecting the blocking mechanism to block and limit the workpiece.

[0019] 2. The base and the fixed seat are simultaneously placed inside the helium detection vacuum chamber. A linear module is installed on the top of the base, and the linear module is capable of telescopic movement. A connecting piece is hinged to the telescopic end of the linear module, allowing the connecting piece to rotate around the hinge point with the telescopic end of the linear module. The fixed seat is located on one side of the base, in the telescopic direction of the linear module. The fixed seat supports the connecting piece, and the connecting piece is rotatably connected to the fixed seat. That is, when the linear module is running, the telescopic end of the linear module drives the connecting piece to move. Because the telescopic end of the linear module and the connecting piece are hinged, during the movement of the connecting piece, the connecting piece rotates simultaneously around the hinge point between itself and the telescopic end of the linear module, and also rotates around the hinge point between itself and the fixed seat. A stop is set at the other end of the connector. When the linear module is running, the stop is moved by the connector, thereby limiting the workpiece in the helium detection vacuum chamber. That is, the extension and retraction direction of the linear module is changed to another direction by the connector. Compared with using a single cylinder as a stopper to limit the workpiece, the structure of the base, fixed seat and connector can improve the stability of the cylinder while achieving the effect of limiting the workpiece in the helium detection vacuum chamber at different positions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the blocking mechanism disclosed in this utility model;

[0022] Figure 2 for Figure 1 Front view structural diagram;

[0023] Figure 3 for Figure 1 A top-view structural diagram;

[0024] Figure 4 This is a three-dimensional structural diagram of the connector.

[0025] Figure label:

[0026] 1-Base, 10-Guide seat, 101-Guide hole;

[0027] 2-Linear module, 20-Cylinder, 21-First connecting rod, 210-First pin hole, 22-First pin shaft;

[0028] 3-Second connecting rod, 30-First through hole, 31-Second through hole, 32-Second pin hole;

[0029] 4-Fixed base, 40-Third pin hole, 41-Second pin;

[0030] 5-First stop block, 50-Fourth pin hole, 51-Third pin shaft;

[0031] 6-Limit seat, 60-First limit slot;

[0032] 7-Limit block, 70-Second limit slot;

[0033] 8-Second stop. Detailed Implementation

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0036] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0037] Example

[0038] Please see Figure 1-4 As shown, this embodiment discloses a blocking mechanism with a changeable direction of movement, including a base 1 and a linear module 2 set on the top of the base 1. The linear module 2 is capable of telescopic movement. When the base 1 is set at the bottom of the helium detection vacuum chamber, the telescopic movement direction of the linear module 2 is horizontal. Specifically, the linear module 2 consists of a cylinder 20 and a first connecting rod 21. The cylinder 20 is set on the top of the base 1, and the first connecting rod 21 is set on the telescopic end of the cylinder 20. That is, the operation of the cylinder 20 drives the first connecting rod 21 to telescopically move.

[0039] A connector is provided at the telescopic end of the linear module 2, allowing the connector to telescopically extend and retract synchronously with the operation of the linear module 2. A fixed base 4 is provided at the bottom inner part of the helium detection vacuum chamber, spaced apart from the base 1 and located on one side of the base 1. Furthermore, the fixed base 4 is directly below the extension line of the telescopic movement in the telescopic direction. A connector is hinged to the side wall of the fixed base 4, with one end hinged to the linear module 2 and the other end fitted with a first stop 5. The connector includes a second connecting rod 3, a first pin 22, and a second pin 41. The second connecting rod 3 has a first through hole 30 at one end and a second through hole 31 at its center. The first pin 22 is located inside the first through hole 30 and the first pin hole 210. A pin is a standardized fastener that can provide both static fixation and relative movement with the connected parts, primarily used at the hinge joints of two parts to form a hinge connection. The pin is usually locked with a cotter pin, which is reliable and easy to disassemble. Here, the purpose of the first pin 22 is to hinge one end of the first connecting rod 21 and one end of the second connecting rod 3, so that the second connecting rod 3 can rotate around the hinge point between itself and the first connecting rod 21. The second pin 41 is located inside the second pin hole 32 and the third pin hole 40, and is used to hinge the second connecting rod 3 to the outer wall of the fixed seat 4, so that the second connecting rod 3 can rotate around the hinge point between itself and the fixed seat 4. When the cylinder 20 is running, the telescopic end of the cylinder 20 drives the first connecting rod 21 to telescopically move. The other end of the first connecting rod 21 drives the second connecting rod 3 to rotate through the hinge. When the second connecting rod 3 rotates, the first stop 5 located at the other end of the second connecting rod 3 can move in a direction different from the telescopic movement of the cylinder 20, thereby blocking and limiting the workpiece inside the helium detection vacuum chamber. It is worth noting that since both the base 1 and the fixed seat 4 are fixedly installed at the bottom of the helium detection vacuum chamber, when the cylinder 20 drives the first connecting rod 21 to extend and retract, the second connecting rod 3 will rotate around the hinge point between itself and the fixed seat 4. During the rotation of the second connecting rod 3, the part of the second connecting rod 3 that is hinged to the first connecting rod 21 will move away from the direction of movement of the first connecting rod 21. Since the connection between the first connecting rod 21 and the cylinder 20 will not cause the first connecting rod 21 to move away from its own direction of extension and retraction, the movement of the second connecting rod 3 will be limited by the first connecting rod 21, and the effect of adjusting the first stop 5 cannot be achieved. Therefore, in this embodiment, the first through hole 30 is specifically a first strip hole. When the first connecting rod 21 extends and retracts, it can move within the first strip hole, thereby driving the second connecting rod 3 to rotate around the hinge point between itself and the fixed seat 4. This will allow the first stop 5 at the other end of the second connecting rod 3 to move in a direction different from the direction of extension and retraction of the first connecting rod 21.

[0040] A second through hole 31 is provided at the other end of the second connecting rod 3. A fourth pin hole 50 is provided on the outer wall of the first stop block 5. A third pin 51 is provided on the outer wall of the first stop block 5, located inside the second through hole 31 and the fourth pin hole 50, for hinged connection of the first stop block 5 to the second connecting rod 3. A limiting seat 6 is provided on the outer wall of the fixed seat 4. A first limiting groove 60 is provided on the outer wall of the limiting seat 6. The first stop block 5 is located inside the first limiting groove 60 and can slide on the outer wall of the limiting seat 6 through the first limiting groove 60. That is, the limiting seat 6 is used to limit the first stop block 5. When the cylinder 20 is running, the cylinder 20 drives the first connecting rod 21 to extend and retract. The first connecting rod 21 drives the second connecting rod 3 to rotate around the hinge point between the second connecting rod 3 and the fixed seat 4. During the rotation of the second connecting rod 3, the first stop block 5 at the other end of the second connecting rod 3 can move with the second connecting rod 3. Since the first stop block 5 and the second connecting rod 3 are hinged together, and the first stop block 5 is located in the first limiting groove 60 of the limiting seat 6, the first limiting groove 60 limits the first stop block 5 during the movement of the first stop block 5, so that the first stop block 5 moves along the central axis of the first limiting groove 60, thereby achieving the blocking and limiting of the workpiece in the helium detection vacuum chamber. It is worth noting that in this embodiment, the second through hole 31 is a second strip hole. When the second connecting rod 3 rotates, the first stop 5 hinged to one end of the second connecting rod 3 will rotate around the hinge point between itself and the second connecting rod 3. Since the first stop 5 is limited by the first limiting groove 60 on the outer wall of the limiting seat 6, the first stop 5 will gradually come into contact with and be squeezed during the rotation. Therefore, setting the second through hole 31 as a second strip hole can ensure that the first stop 5 always moves along the central axis of the first limiting groove 60 during the movement. Compared with the first stop 5 being fixedly connected to one end of the second connecting rod 3, the movable first stop 5 can play a better blocking and limiting effect.

[0041] A limiting block 7 is provided on the outer wall surface of the limiting seat 6 where the first limiting groove 60 is formed. A second limiting groove 70 is formed on the end face of the limiting block 7 facing the limiting seat 6. The second limiting groove 70 is opposite to the first limiting groove 60, and the two grooves form a hole through which the first stop block 5 can pass. Furthermore, the first stop block 5 is slidably connected to the limiting block 7 via the second limiting groove 70. That is, the limiting seat 6 is used to limit one side of the first stop block 5, and the limiting block 7, together with the limiting seat 6, limits the first stop block 5, preventing it from sliding out of the first limiting groove 60 when moving within it.

[0042] A guide seat 10 is also provided on the top of the base 1. A guide hole 101 is opened on the side wall of the guide seat 10. The guide hole 101 allows the first connecting rod 21 to pass through and is used to guide and limit the first connecting rod 21. Compared with the use of a single cylinder 20, it has stronger stability.

[0043] The aforementioned second connecting rod 3 is a V-shaped connecting rod. The notch of the V-shaped connecting rod faces the same direction as the movement direction of the first stop 5. The use of the V-shaped connecting rod provides better adjustment for the movement of the first stop 5. Unlike straight rods and U-shaped rods, the V-shaped connecting rod maintains a simple overall structure and occupies less space. Furthermore, different types of workpieces undergoing helium testing inside the helium testing vacuum chamber require additional limiting structures to enhance the blocking and limiting effect. Therefore, a second stop 8 is provided on top of the first stop 5. The contact area between the second stop 8 and the first stop 5 is smaller than the area of ​​the top of the first stop 5, creating a stepped surface similar to a ladder between the top of the first stop 5 and the second stop 8, thus achieving the blocking and limiting effect for different workpieces. It is worth noting that screw holes are provided inside both the base 1 and the limiting seat 6 for fixing the base 1 and the limiting seat 6 at different positions inside the helium testing vacuum chamber.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blocking mechanism capable of changing the direction of movement, characterized in that, include: The base has a linear module on its top, and a connector is hinged to the telescopic end of the linear module. A fixed base is located on one side of the base, and the connecting member is hinged to the fixed base; a first stop is located at the other end of the connecting member; wherein, when the linear module is running, the telescopic end of the linear module drives the connecting member to move, and the connecting member rotates about its connection point with the fixed base as the center, causing the first stop to move.

2. The blocking mechanism with changeable movement direction according to claim 1, characterized in that, The linear module includes: a cylinder located at the top of the base; a first connecting rod located at the working end of the cylinder, and a first pin hole at the other end of the connecting rod.

3. The blocking mechanism with changeable movement direction according to claim 2, characterized in that, The connector includes: a second connecting rod, one end of which has a first through hole, and the second connecting rod has a second pin hole at its middle position; a first pin shaft, located inside the first through hole and the first pin hole, for hinged connection of the first connecting rod and the second connecting rod; a second pin shaft, located inside the second pin hole; and a third pin hole is provided on the outer wall of the fixing seat, the second pin shaft being located inside the second pin hole and the third pin hole, for hinged connection of the fixing seat and the second connecting rod.

4. The blocking mechanism with changeable movement direction according to claim 3, characterized in that, The other end of the second connecting rod is provided with a second through hole, and the outer wall of the first stop is provided with a fourth pin hole. The outer wall of the first stop is provided with a third pin located inside the second through hole and the fourth pin hole, for hinged connection of the first stop and the second connecting rod.

5. The blocking mechanism with changeable movement direction according to claim 4, characterized in that, The first through hole is a first strip hole, and the second through hole is a second strip hole.

6. The blocking mechanism with changeable movement direction according to claim 5, characterized in that, The outer wall of the fixed base is provided with a limiting seat, and the outer wall of the limiting seat is provided with a first limiting groove. The first stop block is slidably connected to the limiting seat through the first limiting groove.

7. The blocking mechanism with changeable movement direction according to claim 6, characterized in that, The outer wall of the limiting seat is provided with a limiting block, and the limiting block is provided with a second limiting groove on the outer wall of the limiting seat; the concave surface of the second limiting groove is opposite to the concave surface of the first limiting groove, and the first stop block is also slidably connected to the limiting block through the second limiting groove.

8. The blocking mechanism with changeable movement direction according to claim 7, characterized in that, The base is provided with a guide seat at the top, and a guide hole is provided on the side wall of the guide seat. The first connecting rod is slidably connected to the guide seat through the guide hole.

9. The blocking mechanism with changeable movement direction according to claim 8, characterized in that, The second connecting rod is a V-shaped connecting rod, and the second pin hole is located at the fold in the middle of the V-shaped connecting rod.

10. The blocking mechanism with changeable motion direction according to claim 9, characterized in that, The top of the first stop is provided with a second stop, and the contact area between the second stop and the first stop is smaller than the top area of ​​the first stop.

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