CN217704820U

CN217704820U - Pressure maintaining device

Info

Publication number: CN217704820U
Application number: CN202221764134.7U
Authority: CN
Inventors: 毕慧芳
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-01
Anticipated expiration: 2032-07-07

Abstract

The utility model provides a pressurizer relates to electron technical field. The pressure maintaining device comprises a first pressure maintaining box and a second pressure maintaining box which are arranged in an overlapped mode; the first pressure maintaining box and the second pressure maintaining box respectively comprise a box body and a magnetic component; the box body comprises a first accommodating groove, a second accommodating groove and a pressing part; the first accommodating groove is positioned on the first side surface of the box body and used for accommodating and limiting the first material, and the second material is positioned on one side of the first material, which is far away from the box body; the pressing part is positioned on the second side surface of the box body, and the second side surface is opposite to the first side surface; the second accommodating groove is positioned on at least one of the first side surface and the second side surface and is used for accommodating the magnetic assembly; the first pressure maintaining box and the second pressure maintaining box are mutually adsorbed through the magnetic component, and the second material on the second pressure maintaining box can be pressed by the pressing part of the first pressure maintaining box. The pressure maintaining device of the utility model has simple structure, small volume and good pressure maintaining consistency.

Description

Pressure maintaining device

Technical Field

The utility model relates to the field of electronic technology, in particular to pressurizer.

Background

The terminal equipment usually needs to use a dispensing and bonding process to connect two materials, for example, the screen and the middle frame need to be connected, and the two materials need to be continuously pressed according to a certain pressure, so that the glue is prevented from being jacked up by a rebound force (commonly called pressure maintaining) before being cured.

In the related art, a buckle type pressure maintaining device or a mechanical clamp is usually adopted for pressure maintaining, but the buckle type pressure maintaining device is large in size and easy to wear, the assembly consistency of the mechanical clamp is poor, and the pressure cannot be guaranteed. Therefore, a new pressurizer needs to be developed to meet the production requirements of the terminal equipment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pressurizer can solve pressure equipment volume in the correlation technique, easy wearing and tearing, the poor scheduling problem of uniformity.

The technical scheme is as follows:

the pressure maintaining device is suitable for maintaining the pressure of a first material and a second material;

the pressure maintaining device comprises a first pressure maintaining box and a second pressure maintaining box which are arranged in an overlapped mode;

the first pressure maintaining box and the second pressure maintaining box respectively comprise a box body and a magnetic component;

the box body comprises a first accommodating groove, a second accommodating groove and a pressing part;

the first accommodating groove is positioned on the first side surface of the box body and used for accommodating and limiting the first material, and the second material is positioned on one side of the first material, which is far away from the box body;

the pressing part is positioned on a second side surface of the box body, and the second side surface is opposite to the first side surface;

the second accommodating groove is positioned on at least one of the first side surface and the second side surface and is used for accommodating the magnetic assembly;

the first pressure maintaining box and the second pressure maintaining box are mutually adsorbed through the magnetic component, and the pressing part of the first pressure maintaining box can press the second material on the second pressure maintaining box.

In some embodiments, the magnetic assembly comprises a first screw member, a first permanent magnet member, and a nut member;

the nut piece is positioned in the second accommodating groove and fixedly connected with the inner wall of the second accommodating groove, and the first screw piece penetrates through the first permanent magnet piece and is in threaded connection with the nut piece to fix the first permanent magnet piece.

In some embodiments, the first permanent magnet piece is cylindrical, the first permanent magnet piece is axially magnetized, and the first screw piece is coaxially arranged with the first permanent magnet piece.

In some embodiments, both ends of the second receiving groove penetrate to the first side surface and the second side surface;

the magnetic assembly further comprises a second screw member and a second permanent magnet member;

the nut piece is positioned in the axial middle of the second accommodating groove and is fixedly connected with the inner wall of the second accommodating groove; the first screw member penetrates through the first permanent magnet member and is in threaded connection with one end of the nut member, so that the first permanent magnet member is fixed on the first side surface; the second screw member penetrates through the second permanent magnet member and is in threaded connection with the other end of the nut member, so that the second permanent magnet member is fixed on the second side surface.

In some embodiments, the second permanent magnet piece is cylindrical, the second permanent magnet piece is magnetized along the axial direction, and the magnetizing direction of the second screw part is the same as that of the first permanent magnet part, and the second screw part and the second permanent magnet part are coaxially arranged.

In some embodiments, the number of the second receiving grooves is at least three, and each of the second receiving grooves is provided with the magnetic assembly; at least three second holding tank sets up around first holding tank.

In some embodiments, the cartridge further comprises a positioning assembly; the positioning assembly comprises a first positioning structure and a second positioning structure, the first positioning structure is positioned on the first side surface, and the second positioning structure is positioned on the second side surface;

the first positioning structure of the first pressure maintaining box can be matched with the second positioning structure of the second pressure maintaining box, so that the mutual positioning of the first pressure maintaining box and the second pressure maintaining box when the box bodies are overlapped is realized.

In some embodiments, one of the first and second locating structures is a raised portion and the other is a recessed portion.

In some embodiments, the first locating feature comprises a step portion at the first side edge and the second locating feature comprises a hem portion at the second side edge.

In some embodiments, the pressing portion surface has a flexible pad for protecting the second material.

In some embodiments, the first material is a body component of the electronic device and the second material is a screen component of the electronic device.

The utility model provides a beneficial effect that technical scheme brought includes at least:

the utility model discloses a pressurizer, be applicable to and carry out the pressurize to first material and second material, first pressurize box and second pressurize box including overlapping the setting, the pressurize box includes box body and magnetic component, be equipped with first holding tank on the box body, second holding tank and splenium are pressed, wherein first holding tank is located the first side and the second side that the box body is relative respectively with pressing the splenium, first material is arranged in first holding tank, the splenium of superpose at the second pressurize box of first side compresses tightly the second material, first pressurize box and second pressurize box adsorb fixedly each other through the magnetic component above that, and can provide continuous reliable pretightning force for pressing the splenium, the pressurizer has simple structure, the superpose is deposited, adjacent pressurize box adsorbs the pressurize, the volume of pressurize box is less, the uniformity of magnetic adsorption pressurize is good. The pressure maintaining box is superposed and connected to realize pressure maintaining, and is simple and reliable, so that the pressure maintaining device is matched with the automatic assembly production line of the first material and the second material to be used, and the automatic production rate of the product is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a pressure maintaining device according to an embodiment of the present invention;

fig. 2 is a schematic view of another perspective of the structure of the pressure maintaining device according to the embodiment of the present invention;

fig. 3 is an exploded view of the first and second materials provided by the embodiment of the present invention;

fig. 4 is a sectional view of a layout of a pressure maintaining box provided by an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a partially enlarged view of fig. 4 at B.

The reference numerals in the figures are denoted respectively by:

100. a first material; 200. a second material; 300. a first pressure retention box; 400. a second pressure maintaining box;

1. a case body; 101. a first side surface; 102. a second side surface; 11. a first accommodating groove; 12. a second accommodating groove; 13. a pressing part; 131. a flexible pad;

2. a magnetic component; 21. a first screw member; 22. a first permanent magnet member; 23. a nut member; 24. a second screw member; 25. a second permanent magnet piece;

3. a positioning assembly; 31. a first positioning structure; 32. a second positioning structure; 33. a step portion; 34. and (4) flanging.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a pressure maintaining device according to an embodiment of the present invention; fig. 2 is a schematic view of another perspective of the structure of the pressure maintaining device according to the embodiment of the present invention; fig. 3 is an exploded view of the first material 100 and the second material 200 according to an embodiment of the present invention; fig. 4 is a layout cross-sectional view of a pressure maintaining box provided by an embodiment of the present invention; FIG. 5 is an enlarged view of a portion of FIG. 4 at A; fig. 6 is a partially enlarged view of fig. 4 at B.

As shown in fig. 1 to 6, the present embodiment provides a pressure holding device adapted to hold pressure of a first material 100 and a second material 200.

The pressure holding device includes a first pressure holding cassette 300 and a second pressure holding cassette 400 which are arranged in an overlapping manner; the first and second

pressure maintaining cartridges

300 and 400 include a cartridge body 1 and a magnetic member 2, respectively.

The box body 1 comprises a first accommodating groove 11, a second accommodating groove 12 and a pressing part 13; the first accommodating groove 11 is located on the first side surface 101 of the box body 1 and is used for accommodating and limiting the first material 100, and the second material 200 is located on one side, far away from the box body 1, of the first material 100; the pressing part 13 is located on the second side 102 of the box body 1, and the second side 102 is opposite to the first side 101; the second receiving groove 12 is located on at least one of the first side surface 101 and the second side surface 102, and the second receiving groove 12 is used for receiving the magnetic assembly 2.

The first pressure holding cassette 300 and the second pressure holding cassette 400 are attracted to each other by the magnetic member 2, and the pressing portion 13 of the first pressure holding cassette 300 can press the second material 200 on the second pressure holding cassette 400.

The utility model discloses a pressurizer, be applicable to and carry out the pressurize to first material 100 and second material 200, first pressurize box 300 and second pressurize box 400 including overlapping the setting, the pressurize box includes box body 1 and magnetic component 2, be equipped with first holding tank 11 on the box body 1, second holding tank 12 and press splenium 13, wherein first holding tank 11 with press splenium 13 to be located the relative first side 101 of box body 1 and second side 102 respectively, first material 100 is arranged in first holding tank 11, the superpose compresses tightly second material 200 at the splenium 13 of the second pressurize box 400 of first side 101, first pressurize box 300 and second pressurize box 400 adsorb fixedly each other through magnetic component 2 on it, and can provide reliable pretightning force for pressing splenium 13, the pressurizer has simple structure, the superpose is deposited, adjacent pressurize box adsorbs the pressurize, the volume of pressurize box is less, the uniformity of magnetic adsorption pressurize is good.

The magnetic component 2 is arranged in the second accommodating groove 12, so that the thickness of the pressure maintaining box can be effectively reduced.

The pressure maintaining box is superposed and connected to realize pressure maintaining, is simple and reliable, is favorable for the matching use of the pressure maintaining device and the automatic assembly production line of the first material 100 and the second material 200, and improves the automatic production rate of products.

In some possible implementations, the first material 100 and the second material 200 are respectively a frame body and a screen cover (or an entire screen assembly) of a terminal device, and referring to fig. 3, the first material 100 is exemplified by a frame body of a smart watch, and the second material 200 is exemplified by a screen cover of a smart watch.

It can be understood that the forms of the first material 100 and the second material 200 include the frame body and the screen cover of the smart watch, but the forms are by no means limited thereto, and the forms may also be the middle frame and the screen cover of a smart phone, a smart wearable device, or any other form of terminal device, and the middle frame and the screen cover are glued by using glue, and then pressure maintaining is needed.

In some possible implementations, the second receiving groove 12 may be located on the first side surface 101, may also be located on the second side surface 102, and may also be located on both the first side surface 101 and the second side surface 102 in a penetrating manner.

In other possible implementations, the shape of the second receiving groove 12 includes, but is not limited to, circular, square, rectangular, kidney-shaped, and the like. Preferably, the second receiving groove 12 is circular in shape.

As shown in connection with fig. 4-6, in some embodiments, the magnet assembly 2 includes a first screw member 21, a first permanent magnet member 22, and a nut member 23.

The nut member 23 is positioned in the second receiving groove 12 and is fixedly connected with the inner wall of the second receiving groove 12, and the first screw member 21 penetrates through the first permanent magnet member 22 and is in threaded connection with the nut member 23 to fix the first permanent magnet member 22.

The magnetic assembly 2 of the embodiment includes a first screw member 21, a first permanent magnetic member 22 and a nut member 23, wherein the nut member 23 is located in the second receiving groove 12 and is fixedly connected to the inner wall of the second receiving groove 12, the first screw member 21 is in threaded connection with the nut member 23, the first permanent magnetic member 22 is fixed in the second receiving groove 12, the fixing performance of the first permanent magnetic member 22 is good, the consistency of the magnetic adsorption force can be ensured, and the pressure maintaining effect is ensured.

The first permanent magnetic part 22 is fixed by screws, so that the assembly and the replacement are convenient, and the interchangeability is good.

Referring to fig. 5 or 6, in some embodiments, the first permanent magnet piece 22 is cylindrical, the first permanent magnet piece 22 is axially magnetized, and the first screw member 21 is coaxially disposed with the first permanent magnet piece 22. The first permanent magnet 22 is axially charged, the direction of the first permanent magnet is consistent with the overlapping direction of the adjacent pressure maintaining boxes, and the pressure maintaining boxes in the overlapping direction can be well adsorbed.

In addition, the first permanent magnet piece 22 is axially magnetized, two magnetic poles of the first permanent magnet piece 22 corresponding to the first side surface 101 and the second side surface 102 are opposite, and when the two pressure maintaining boxes are adjacently overlapped, the magnetic pole of the first permanent magnet piece 22 of the first pressure maintaining box 300 and the magnetic pole of the first permanent magnet piece 22 of the second pressure maintaining box 400 are just opposite magnetic poles, so that the first permanent magnet piece 22 and the second permanent magnet piece can be adsorbed together.

As shown in fig. 4 to 6, in some embodiments, both ends of the second receiving groove 12 penetrate to the first side surface 101 and the second side surface 102; the magnet assembly 2 further comprises a second screw member 24 and a second permanent magnet member 25.

The nut member 23 is located at the axial middle part of the second receiving groove 12 and is fixedly connected with the inner wall of the second receiving groove 12; the first screw member 21 penetrates through the first permanent magnet member 22 and is in threaded connection with one end of the nut member 23, so that the first permanent magnet member 22 is fixed on the first side surface 101; the second screw member 24 passes through the second permanent magnet member 25 and is screw-coupled to the other end of the nut member 23 to fix the second permanent magnet member 25 to the second side surface 102.

The second receiving groove 12 of the present embodiment penetrates the first side surface 101 and the second side surface 102, the nut member 23 is located in the middle of the second receiving groove 12, the first screw member 21 fixes the first permanent magnet member 22 to the first side surface 101, and the second screw member 24 fixes the second permanent magnet member 25 to the second side surface 102, and each can be connected to an adjacent pressure holding box by suction.

In some possible implementations, the nut member 23 is embedded in the second receiving groove 12, and the embedding manner includes, but is not limited to, integral injection molding.

Further, the outer peripheral surface of the nut member 23 has a rough structure to increase the strength of connection of the nut member 23 with the inner wall of the second accommodation groove 12.

Referring to fig. 5 or 6, in some embodiments, the second permanent magnet piece 25 is cylindrical, the second permanent magnet piece 25 is axially magnetized in the same direction as the first permanent magnet piece 22, and the second screw member 24 is coaxially disposed with the second permanent magnet piece 25.

In some embodiments, the number of the second receiving grooves 12 is at least three, and each of the second receiving grooves 12 is provided with the magnetic assembly 2; at least three second receiving grooves 12 are provided around the first receiving groove 11. At least three magnetic component 2 can provide stable absorption plane, provides stable unanimous adsorption affinity for two adjacent pressurize boxes.

Referring to fig. 1 and 2, the number of the second receiving grooves 12 is six, each of the second receiving grooves 12 has the magnetic assembly 2 therein, and the six second receiving grooves 12 are circumferentially arranged around the first receiving groove 11 at intervals.

It is understood that the number of the second receiving grooves 12 and the magnetic assemblies 2 may be three, four, five, six, etc., and may be selected according to the magnitude of the attraction force, the shapes of the first material 100 and the second material 200, etc.

In some possible implementations, the magnitude of the magnetic force of the first permanent magnet 22 and the second permanent magnet 25 is related to the holding pressure of the first material 100 and the second material 200, and the sum of the adsorption forces of all the magnetic assemblies 2 is the same as the holding pressure.

The magnetic force of the first permanent magnet piece 22 and the second permanent magnet piece 25 can be selected reasonably according to the material, the volume and the magnetizing size.

As shown in connection with fig. 1 and 2, in some embodiments, the case 1 further includes a positioning assembly 3; the positioning assembly 3 comprises a first positioning structure 31 and a second positioning structure 32, wherein the first positioning structure 31 is located on the first side surface 101, and the second positioning structure 32 is located on the second side surface 102; the first positioning structure 31 of the first pressure maintaining box 300 can be matched with the second positioning structure 32 of the second pressure maintaining box 400, so that the mutual positioning of the first pressure maintaining box 300 and the second pressure maintaining box 400 when the box body 1 is overlapped is realized.

When the positioning component 3 can ensure that the first pressure maintaining box 300 and the second pressure maintaining box 400 are overlapped, the pressing part 13 can be just opposite to the surface of the second material 200, and the magnetic component 2 of the first pressure maintaining box 300 can be axially overlapped with the magnetic component 2 of the second pressure maintaining box 400, so that a good adsorption effect is ensured.

Further, one of the first positioning structure 31 and the second positioning structure 32 is a protrusion portion, and the other is a groove portion.

As shown in fig. 1 and 2, in some embodiments, the first positioning structure 31 includes a step portion 33 at an edge of the first side 101, and the second positioning structure 32 includes a flanging portion at an edge of the second side 102.

First location structure 31 includes the step part 33 at first side 101 edge, and second location structure 32 includes the turn-ups portion at second side 102 edge, and when first pressurize box 300 and second pressurize box 400 overlapped, turn-ups portion and the cooperation of step part 33, first pressurize box 300 and the location of second pressurize box 400 to realize that circumference is fixed, guarantee the stability after first pressurize box 300 and the pile of second pressurize box 400.

In some embodiments, the pressing portion 13 has a flexible pad 131 on the surface, and the flexible pad 131 is used for protecting the second material 200. Preferably, the material of the flexible pad 131 includes foam, plastic, sponge.

The utility model discloses a pressurizer, first pressurize box 300 and second pressurize box 400 cooperation are used, can realize the pressurize to first material 100 in the first pressurize box 300 and second material 200, and a plurality of pressurize boxes can overlap to the realization is to the pressurize of multiunit first material 100 and second material 200.

Referring to fig. 3, in some embodiments, the first material 100 is a body component of an electronic device, the second material 200 is a screen component of the electronic device, and after the first material 100 and the second material 200 are bonded, the pressure maintaining device of the present invention is utilized to maintain pressure, so as to ensure the connection reliability of the first material 100 and the second material 200.

The utility model discloses a pressurizer can be set up in terminal equipment's automated production system, relies on the superpose of automation equipment completion a plurality of pressurize boxes, just can realize the pressurize, can break away from the pressurize technology to artificial reliance. Pressurizer's is small, overlaps and deposits, can satisfy a plurality of product production, and production efficiency is high, has higher practicality.

It is noted that, as used herein, references to "a plurality" or "at least one" mean one or more, and references to "a plurality" or "at least two" mean two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressurizer, characterized in that the pressurizer is adapted to pressurize a first material (100) and a second material (200);

the pressure maintaining device comprises a first pressure maintaining box (300) and a second pressure maintaining box (400) which are arranged in an overlapped mode;

the first pressure maintaining box (300) and the second pressure maintaining box (400) respectively comprise a box body (1) and a magnetic component (2);

the box body (1) comprises a first accommodating groove (11), a second accommodating groove (12) and a pressing part (13);

the first accommodating groove (11) is located on a first side surface (101) of the box body (1), the accommodating groove is used for accommodating and limiting the first material (100), and the second material (200) is located on one side, far away from the box body (1), of the first material (100);

the pressing part (13) is positioned on a second side surface (102) of the box body (1), and the second side surface (102) is opposite to the first side surface (101);

the second accommodating groove (12) is positioned on at least one of the first side surface (101) and the second side surface (102), and the second accommodating groove (12) is used for accommodating the magnetic component (2);

the first pressure maintaining box (300) and the second pressure maintaining box (400) are mutually adsorbed through the magnetic component (2), and the pressing part (13) of the first pressure maintaining box (300) can press the second material (200) on the second pressure maintaining box (400).

2. Pressurizer according to claim 1, characterized in that the magnetic assembly (2) comprises a first screw member (21), a first permanent magnet member (22) and a nut member (23);

the nut piece (23) is positioned in the second accommodating groove (12) and fixedly connected with the inner wall of the second accommodating groove (12), and the first screw piece (21) penetrates through the first permanent magnet piece (22) and is in threaded connection with the nut piece (23) to fix the first permanent magnet piece (22).

3. Pressurizer according to claim 2, characterized in that the first permanent magnet (22) is cylindrical, that the first permanent magnet (22) is axially magnetized, and that the first screw member (21) is arranged coaxially with the first permanent magnet (22).

4. The pressure holding apparatus according to claim 2, characterized in that both ends of the second accommodation groove (12) penetrate to the first side surface (101) and the second side surface (102);

the magnetic assembly (2) further comprises a second screw member (24) and a second permanent magnet member (25);

the nut piece (23) is positioned in the axial middle of the second accommodating groove (12) and is fixedly connected with the inner wall of the second accommodating groove (12); the first screw member (21) penetrates through the first permanent magnet member (22) and is in threaded connection with one end of the nut member (23) to fix the first permanent magnet member (22) on the first side surface (101); the second screw member (24) penetrates through the second permanent magnet member (25) and is in threaded connection with the other end of the nut member (23) to fix the second permanent magnet member (25) on the second side surface (102).

5. Pressurizer according to claim 4, characterized in that the second permanent magnet (25) is cylindrical, the second permanent magnet (25) is magnetized in axial direction and in the same direction as the first permanent magnet (22), and the second screw member (24) is arranged coaxially with the second permanent magnet (25).

6. Pressurizer according to claim 5, characterized in that the number of the second receiving grooves (12) is at least three, each of the second receiving grooves (12) being provided with the magnetic component (2); at least three second accommodation grooves (12) are provided around the first accommodation groove (11).

7. Pressurizer according to claim 1, characterized in that the cartridge (1) further comprises a positioning assembly (3); the positioning assembly (3) comprises a first positioning structure (31) and a second positioning structure (32), the first positioning structure (31) being located at the first side (101) and the second positioning structure (32) being located at the second side (102);

the first positioning structure (31) of the first pressure maintaining box (300) can be matched with the second positioning structure (32) of the second pressure maintaining box (400) to realize the mutual positioning of the box body (1) of the first pressure maintaining box (300) and the box body (1) of the second pressure maintaining box (400) when being overlapped.

8. Pressurizer according to claim 7, characterized in that one of the first positioning structure (31) and the second positioning structure (32) is a protruding part and the other is a recessed part.

9. Pressurizer according to claim 7, characterized in that the first positioning structure (31) comprises a step (33) at the edge of the first side (101) and the second positioning structure (32) comprises a turned-up portion (34) at the edge of the second side (102).

10. Pressurizer according to claim 1, characterized in that the press part (13) surface has a flexible pad (131), the flexible pad (131) being used for protecting the second material (200).

11. Pressurizer according to claim 1, characterized in that the first material (100) is a body component of an electronic device and the second material (200) is a screen component of an electronic device.