Limiting structure for movement of glass door of clean bench

Abstract

The utility model discloses a limiting structure for the movement of a glass door of a clean bench, which comprises a jacking unit, an adjusting unit and a limiting unit, and the jacking unit comprises an adjusting component which is arranged on one side of the glass door and is used for pushing the glass door up and down along an opening of a bench body; the jacking assembly is arranged in the adjusting assembly and used for limiting the adjusted glass door piece; the limiting units are arranged on the two sides of the opening of the workbench body and used for limiting and guiding the glass door in the moving process. The glass door piece is pushed upwards or downwards to be adjusted through the pull rod, after adjustment is completed, the hand of an operator stops pressing the pressing block and takes out the glass door piece from the pull rod, the jacking spring pushes the rubber block to continue to abut against the front end of the workbench body, and through friction force between the rubber block and the front end of the workbench body, when the hand of the operator takes out the glass door piece from the pull rod, the glass door piece can be conveniently taken out. And the glass door piece can stop moving immediately, so that the glass door is prevented from continuously moving for a certain distance after being pushed due to the inertia effect, and the use is safe.

Description

Technical Field

[0001] The utility model relates to the technical field of clean workbenches, in particular to a limiting structure for the movement of a glass door of a clean workbench. Background Art

[0002] A clean bench is an air purification device that provides a local dust-free and sterile working environment. It is widely used in biological laboratories, medical and health care, biopharmaceutical and other related industries. Its working principle is to draw air in through a fan, filter it through a high-efficiency filter through a static pressure box, and then send the filtered clean air out in a vertical or horizontal airflow state, so that the working area can continuously achieve the required cleanliness under the control of clean air, thus forming a sterile and high-clean working environment. Among them, the glass door is the most important component of the clean bench. It is essential to open and close the glass door every time the clean bench is used;

[0003] When the glass door of the clean workbench in the prior art is pulled upward or downward for adjustment, the pulling speed is too fast. As a result, when the glass door is released, due to the effect of inertia, the glass door will continue to move a distance and then hit the edge of the door frame of the clean workbench, posing a certain safety hazard. In addition, during the movement of the existing glass door, the edge of the glass door is usually in direct friction contact with the guide groove of the door frame of the clean workbench, which can easily cause the edge of the glass door or the door frame to be worn over a long period of time, thereby reducing the service life of the glass door.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a limiting structure for the movement of a glass door of a clean workbench, so as to solve the problem in the prior art of the clean workbench glass door proposed in the above background art that the pulling speed is too fast, resulting in that when the glass door is released, the glass door will continue to move a distance due to inertia and then hit the edge of the door frame of the clean workbench, posing certain safety hazards. In addition, the existing glass door is prone to wear and tear on the edge of the glass door or the door frame over a long period of time during the movement process, thereby reducing the service life of the glass door.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A limiting structure for the movement of a glass door of a clean workbench, comprising:

[0008] The tightening unit includes an adjusting assembly provided on one side of the glass door for pushing the glass door member up and down along the opening of the workbench body, and a tightening assembly provided inside the adjusting assembly for limiting the position of the adjusted glass door member;

[0009] The limiting units are arranged on both sides of the opening of the workbench body and are used to limit and guide the glass door during the moving process.

[0010] Furthermore, the adjustment component includes:

[0011] A fixing block, fixedly connected to the front end of the glass door;

[0012] A pull rod is fixedly connected to the front end of the fixed block and is used for adjusting the glass door piece up and down.

[0013] Furthermore, the tightening assembly includes:

[0014] A connecting rod is slidably connected to the interior of the pull rod, and a retreat groove is provided inside the pull rod for allowing the connecting rod to retreat;

[0015] There are two sets of top shafts, which are fixedly connected to one side of the connecting rod near the end, and the top shafts pass through the inside of the pull rod to the outside;

[0016] A rubber block is fixedly connected to one end of the top shaft opposite to the connecting rod, and is used to press against the front end of the workbench body to limit the glass door;

[0017] The tightening spring is sleeved on the outside of the jacking shaft and located between the pull rod and the rubber block, and is used for tightening the rubber block.

[0018] Furthermore, the tightening assembly further includes:

[0019] A pressing block is inserted into the interior of the pull rod for sliding up and down. A second guide groove is provided inside the pull rod for guiding the movement of the pressing block. The upper portion of the pressing block is higher than the plane where the upper end of the pull rod is located.

[0020] a wedge block fixedly connected to the lower end of the pressing block;

[0021] The second inclined surface is provided at the corner of the lower end of the wedge block close to the connecting rod, and the upper end of the connecting rod is provided with a first inclined surface with an inclination angle equal to that of the second inclined surface.

[0022] Furthermore, a guide roller is embedded in the lower end of the wedge block, and two groups of guide rollers are provided to reduce the friction between the first inclined surface and the second inclined surface.

[0023] Furthermore, the limiting unit includes:

[0024] a roller rotatably connected to the inside of the workbench body and located on the side of the glass door;

[0025] A rotating shaft, fixedly connected to both ends of the roller, the rotating shaft being connected to the rotation of the workbench body, and used for positioning the roller;

[0026] The limiting groove is arranged on the outer side of the roller and is used to limit the two sides of the glass door body. The width of the limiting groove is adapted to the thickness of the glass door.

[0027] Furthermore, two groups of rollers are respectively provided on both sides of the glass door.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. The utility model uses a pull rod to push the glass door upward or downward for adjustment. After the adjustment is completed, the operator stops pressing the pressure block and removes it from the pull rod. The tightening spring pushes the rubber block to continue to press against the front end of the workbench body. Due to the friction between the rubber block and the front end of the workbench body, the glass door can stop moving immediately when the operator removes his hand from the pull rod, thereby preventing the glass door from continuing to move a distance after the push is completed due to inertia, and ensuring safe use.

[0030] 2. The utility model sets a limiting groove on the outer side of the roller, which can limit and guide the two sides of the glass door, avoiding the direct friction of the slot on the glass door, slowing down the wear rate of the glass door, and extending the service life of the glass door. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the limit unit of the utility model;

[0033] Figure 3 This is a schematic diagram of the tightening state of the tightening unit of the utility model;

[0034] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 This is a schematic diagram of the internal structure of the tightening assembly of the utility model;

[0036] Figure 6 For this utility model Figure 5 Cross-sectional view of AA in the figure.

[0037] Figure numerals: 100, workbench body; 1001, slot; 1002, accommodating slot; 101, glass door; 1, tightening unit; 11, adjusting assembly; 111, fixing block; 112, pull rod; 1121, retreat groove; 1122, first guide groove; 1123, second guide groove; 12, tightening assembly; 121, connecting rod; 1211, first inclined surface; 122, top shaft; 123, rubber block; 124, tightening spring; 125, pressure block; 126, wedge block; 1261, second inclined surface; 127, guide roller; 2, limiting unit; 21, roller; 22, rotating shaft; 23, limiting groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See also Figure 1-6 , the utility model provides a technical solution:

[0040] A limiting structure for the movement of a glass door, used in the field of clean workbenches, includes:

[0041] The tightening unit 1 includes an adjusting assembly 11 provided on one side of the glass door for pushing the glass door member 101 up and down along the opening of the workbench body 100, and a tightening assembly 12 provided inside the adjusting assembly 11 for limiting the position of the adjusted glass door member 101;

[0042] The limiting units 2 are provided on both sides of the opening of the workbench body 100 and are used to limit and guide the glass door during the moving process.

[0043] As an improvement, the adjustment component 11 includes:

[0044] A fixing block 111 is fixedly connected to the front end of the glass door 101;

[0045] The pull rod 112 is fixedly connected to the front end of the fixing block 111 and is used to adjust the glass door 101 up and down.

[0046] Furthermore, the tightening assembly 12 includes:

[0047] The connecting rod 121 is slidably connected to the inside of the pull rod 112. The pull rod 112 is provided with a retreat groove 1121 for the connecting rod 121 to retreat.

[0048] There are two sets of top shafts 122, which are fixedly connected to one side of the connecting rod 121 near the end. The top shafts 122 pass through the inside of the pull rod 112 to the outside. The outside of the top shafts 122 and inside the pull rod 112 are provided with first guide grooves 1122 for guiding the movement of the top shafts 122;

[0049] A rubber block 123 is fixedly connected to one end of the top shaft 122 opposite to the connecting rod 121, and is used to press against the front end of the workbench body 100 to limit the glass door;

[0050] The tightening spring 124 is sleeved on the outside of the jacking shaft 122 and located between the pull rod 112 and the rubber block 123 , and is used to tighten the rubber block 123 .

[0051] Furthermore, the tightening assembly 12 further includes:

[0052] The pressing block 125 is inserted into the pull rod 112 for sliding up and down. The pull rod 112 is provided with a second guide groove 1123 for guiding the movement of the pressing block 125. The upper part of the pressing block 125 is higher than the plane where the upper end of the pull rod 112 is located.

[0053] A wedge block 126 is fixedly connected to the lower end of the pressing block 125;

[0054] The second inclined surface 1261 is provided at the corner of the lower end of the wedge block 126 close to the connecting rod 121 , and the upper end of the connecting rod 121 is provided with a first inclined surface 1211 having the same inclination angle as the second inclined surface 1261 .

[0055] A guide roller 127 is embedded in the lower end of the wedge block 126 . Two groups of guide rollers 127 are provided to reduce the friction between the first inclined surface 1211 and the second inclined surface 1261 .

[0056] As an improvement, the limiting unit 2 includes:

[0057] The roller 21 is rotatably connected to the inside of the workbench body 100 and is located on the side of the glass door 101;

[0058] The rotating shaft 22 is fixedly connected to both ends of the roller 21 and is connected to the workbench body 100 for positioning the roller 21;

[0059] The limiting groove 23 is provided on the outside of the roller 21 and is used to limit the two sides of the glass door body. The width of the limiting groove 23 is adapted to the thickness of the glass door.

[0060] Furthermore, two groups of rollers 21 are respectively provided on both sides of the glass door 101 .

[0061] With this design, when the glass door 101 moves up and down, the two sets of rollers 21 corresponding to the two sides of the glass door 101 can guide the glass door 101 to prevent the glass door 101 from tilting during the movement.

[0062] It should be supplemented that a slot 1001 for accommodating the glass door 101 is provided inside the workbench body 100 , and an accommodating groove 1002 for accommodating the roller 21 is provided inside the workbench body 100 and outside the roller 21 ;

[0063] It should also be added that the rear end of the workbench body 100 is provided with a counterweight block connected to the glass door 101 through a steel wire rope, which is used to configure the glass door 101 and facilitate the operator to pull the glass door 101 up and down. The counterweight block and steel wire rope are not drawn in the figure.

[0064] It should be noted that: in the specific implementation process of the present invention, when it is necessary to push the glass door 101 up and down, hold the pull rod 112 and press the pressure block 125 downward, the pressure block 125 drives the wedge block 126 to move downward along the second guide groove 1123, the wedge block 126 cooperates with the first inclined surface 1211 through the guide roller 127 to drive the connecting rod 121 to move along the retreat groove 1121, the connecting rod 121 drives the rubber block 123 through the top shaft 122 to compress the top spring 124 and separate from the front end of the workbench body 100, at this time, the glass door 101 can be adjusted by pulling the pull rod 112 and pressing the pressure block 125 downward. The rod 112 pushes the glass door 101 upward or downward for adjustment. After the adjustment is completed, the operator stops pressing the pressure block 125 and removes it from the pull rod 112. The tensioning spring 124 pushes the rubber block 123 to continue to press against the front end of the workbench body 100. Due to the friction between the rubber block 123 and the front end of the workbench body 100, the glass door 101 can stop moving immediately when the operator removes his hand from the pull rod 112, thereby preventing the glass door from continuing to move a distance after the push is completed due to inertia, ensuring safe use.

[0065] Among them, when the tightening spring 124 pushes the rubber block 123 to press against the front end of the workbench body 100, the rubber block 123 drives the connecting rod 121 to reset through the top shaft 122, and the connecting rod 121 pushes the wedge block 126 upward through the first inclined surface 1211, so that the wedge block 126 drives the pressure block 125 to reset.

[0066] In addition, during the up and down movement of the glass door 101, the utility model sets a limiting groove 23 on the outer side of the roller 21. The limiting groove 23 can limit and guide the two sides of the glass door 101, thereby avoiding the direct friction of the slot 1001 on the glass door 101, slowing down the wear speed of the glass door 101, and extending the service life of the glass door 101.

[0067] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0068] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limiting structure for the movement of a glass door of a clean workbench, characterized in that: include: A tightening unit (1) comprises an adjusting assembly (11) provided on one side of the glass door for pushing the glass door member (101) up and down along the opening of the workbench body (100), and a tightening assembly (12) provided inside the adjusting assembly (11) for limiting the position of the adjusted glass door member (101); The limiting units (2) are arranged on both sides of the opening of the workbench body (100) and are used to limit and guide the glass door during the moving process.

2. A limiting structure for the movement of a glass door of a clean workbench according to claim 1, characterized in that: The regulating assembly (11) comprises: A fixing block (111) fixedly connected to the front end of the glass door member (101); The pull rod (112) is fixedly connected to the front end of the fixed block (111) and is used to adjust the glass door (101) up and down.

3. The limiting structure for the movement of the glass door of a clean workbench according to claim 2, characterized in that: The tightening assembly (12) comprises: A connecting rod (121) is slidably connected to the interior of the pull rod (112), and a retreat groove (1121) for allowing the connecting rod (121) to retreat is provided inside the pull rod (112); Two groups of top shafts (122) are fixedly connected to one side of the connecting rod (121) near the end thereof, and the top shafts (122) pass through the inside of the pull rod (112) to the outside; A rubber block (123) is fixedly connected to one end of the top shaft (122) opposite to the connecting rod (121) and is used to press against the front end of the workbench body (100) to limit the glass door; A tightening spring (124) is sleeved on the outside of the jacking shaft (122) and located between the pull rod (112) and the rubber block (123), and is used for tightening the rubber block (123).

4. A limiting structure for the movement of a glass door of a clean workbench according to claim 3, characterized in that: The tightening assembly (12) further comprises: A pressing block (125) is inserted into the pull rod (112) so as to slide up and down. A second guide groove (1123) is provided inside the pull rod (112) for guiding the movement of the pressing block (125). The upper portion of the pressing block (125) is higher than the plane where the upper end of the pull rod (112) is located. a wedge block (126) fixedly connected to the lower end of the pressing block (125); The second inclined surface (1261) is provided at the corner of the lower end of the wedge block (126) close to the connecting rod (121), and the upper end of the connecting rod (121) is provided with a first inclined surface (1211) with an inclination angle equal to that of the second inclined surface (1261).

5. The limiting structure for the movement of the glass door of a clean workbench according to claim 4, characterized in that: A guide roller (127) is embedded in the lower end of the wedge block (126), and two groups of guide rollers (127) are provided to reduce the friction between the first inclined surface (1211) and the second inclined surface (1261).

6. The limiting structure for the movement of the glass door of a clean workbench according to claim 1, characterized in that: The limiting unit (2) comprises: A roller (21) is rotatably connected to the inside of the workbench body (100) and is located on the side of the glass door (101); A rotating shaft (22) is fixedly connected to both ends of the roller (21), the rotation of which is connected to the rotation of the workbench body (100) and is used to position the roller (21); The limiting groove (23) is arranged outside the roller (21) and is used to limit the two sides of the glass door body. The width of the limiting groove (23) is adapted to the thickness of the glass door.

7. The limiting structure for the movement of the glass door of a clean workbench according to claim 6, characterized in that: Two groups of rollers (21) are respectively provided on both sides of the glass door (101).

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