CN219989993U

CN219989993U - Sheath

Info

Publication number: CN219989993U
Application number: CN202321579851.7U
Authority: CN
Inventors: 习助华; 危洪兵; 李培松
Original assignee: Shenzhen Siglent Technologies Co Ltd
Current assignee: Shenzhen Siglent Technologies Co Ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-11-10
Anticipated expiration: 2033-06-20

Abstract

The utility model relates to a corner protective sleeve of equipment, in particular to a protective sleeve, which is provided with a first outer wall surface and a second outer wall surface at two ends in a first direction, wherein the first outer wall surface is provided with a first supporting structure, the second outer wall surface is provided with a second supporting structure, each supporting structure comprises a concave part and a convex part, the orthographic projection of one convex part on a reference surface is positioned in the orthographic projection of the other concave part on the reference surface of the two supporting structures, so that the first supporting structure of one of the two adjacent protective sleeves is matched with the second supporting structure of the other in the concave-convex manner in the stacking direction of the equipment to realize supporting and positioning, and the convex heights of the convex parts in the two supporting structures relative to the outer wall surfaces are equal.

Description

Sheath

Technical Field

The utility model relates to a protective sleeve for equipment corners, in particular to a protective sleeve.

Background

The appearance of check out test set is the cuboid structure, and it is when using or stacking, generally needs to set up the sheath at four angles of equipment to protection equipment, satisfies the demand that the equipment supports at the mesa or stacks in the upper and lower direction simultaneously. However, the left sheath and the right sheath of the device have different structures, and the left sheath and the right sheath cannot be shared when meeting the requirements of supporting or stacking up and down, so that the die opening cost is high; the two parts materials can also cause the problems of increased operation management cost, low production and assembly efficiency and high production and assembly cost.

Disclosure of Invention

The utility model provides a sheath to solve the technical problems of high sheath die sinking cost and high operation management cost of equipment.

According to an aspect of the present utility model, there is provided in one embodiment a sheath including a connection wall, and first and second side walls arranged opposite to each other in a first direction, the first and second side walls being connected by the connection wall to enclose a receiving slot for receiving a corner of an apparatus, the first side wall having a first outer wall surface facing away from the receiving slot in the first direction, the second side wall having a second outer wall surface facing away from the receiving slot in the first direction, the first outer wall surface having a first support structure thereon, the second outer wall surface having a second support structure thereon;

the first support structure comprises a first concave part and a first convex part, the second support structure comprises a second concave part and a second convex part, and the protruding height of the first convex part on the first outer wall surface is equal to the protruding height of the second convex part on the second outer wall surface; the orthographic projection of the first convex part on the reference surface is positioned in the orthographic projection of the second concave part on the reference surface, the orthographic projection of the second convex part on the reference surface is positioned in the orthographic projection of the first concave part on the reference surface, and the reference surface is a preset plane perpendicular to the first direction.

In an alternative embodiment, the protruding height of the first protrusion on the first outer wall surface is equal to or smaller than the recessed depth of the second recess on the second outer wall surface, and the protruding height of the second protrusion on the second outer wall surface is equal to or smaller than the recessed depth of the first recess on the first outer wall surface.

In an alternative embodiment, the first support structure and the second support structure are each provided in plurality and distributed at different positions of the corresponding first outer wall surface and second outer wall surface; the first support structures and the second support structures are in one-to-one correspondence.

In an alternative embodiment, in the first support structure and the second support structure, the number of the first convex parts is set to be a plurality, and the second concave parts are in one-to-one correspondence with the first convex parts; and/or the number of the first concave parts is set to be a plurality, and the second convex parts are in one-to-one correspondence with the first concave parts.

In an alternative embodiment, the first protrusions and the first recesses are staggered in a second direction, the second direction being any direction within the reference plane.

In an alternative embodiment, the first protrusion, the first recess, the second protrusion, and the second recess each have a preset length, and the length directions of the first protrusion, the first recess, the second protrusion, and the second recess are all the same.

In an alternative embodiment, the cross-sectional shape of the first protrusion and the cross-sectional shape of the second recess are both semi-circular, and the radius of the cross-sectional shape of the first protrusion is less than or equal to the radius of the cross-sectional shape of the second recess;

and/or the cross-sectional shape of the second convex part and the cross-sectional shape of the first concave part are semicircular, and the radius of the cross-sectional shape of the second convex part is smaller than or equal to the radius of the cross-sectional shape of the first concave part.

In an alternative embodiment, the cross-sectional shape of the first protrusion is rectangular or trapezoidal, and the structure of the second recess matches the structure of the first protrusion;

and/or the cross section of the second convex part is rectangular or trapezoidal, and the structure of the first concave part is matched with that of the second convex part.

In an alternative embodiment, the first side wall includes a first connection portion and a first cantilever portion, the first connection portion being connected between the first cantilever portion and the connection wall, the first support structure being disposed on the first connection portion;

and/or, the second side wall comprises a second connecting part and a second cantilever part, the second connecting part is connected between the second cantilever part and the connecting wall, and the second supporting structure is arranged on the second connecting part.

In an alternative embodiment, the thickness of the first cantilever portion is smaller than the thickness of the first connecting portion, and the thickness of the first cantilever portion gradually decreases in a direction from the groove bottom to the groove opening; and/or the thickness of the second cantilever part is smaller than that of the second connecting part, and the thickness of the second cantilever part gradually decreases in the direction from the groove bottom to the groove opening.

According to the sheath of the embodiment, the sheath comprises the connecting wall and the first side wall and the second side wall which are oppositely arranged in the first direction, the first side wall and the second side wall are connected through the connecting wall to form the accommodating groove for accommodating the corners of equipment, the first side wall is provided with the first outer wall surface which is opposite to the accommodating groove in the first direction, the second side wall is provided with the second outer wall surface which is opposite to the accommodating groove in the first direction, the first outer wall surface is provided with the first supporting structure, the second outer wall surface is provided with the second supporting structure, each supporting structure comprises the concave part and the convex part, the orthographic projection of one of the two supporting structures on the reference surface is positioned in the orthographic projection of the concave part of the other on the reference surface, so that the first supporting structure of one of the two adjacent sheaths and the second supporting structure of the other sheath are matched in a concave-convex manner in the stacking direction to realize supporting positioning in the stacking direction, and compared with the sheath structure which is respectively provided with the convex part and the concave part on one side of the side opposite to the accommodating groove of the two side walls, the sheath structure disclosed by the utility model can realize sharing of the left sheath and right sheath, and help to reduce the operation cost of the sheath and the management cost; and set up the protrusion height of protruding portion relative outer wall in two bearing structure and equal, when can satisfy two adjacent sheath location supports in the direction of stacking, satisfy the stable support of being located the below sheath on the horizontal plane, help improving equipment support and stack stability.

Drawings

FIG. 1 is a front view of a sheath in one embodiment;

FIG. 2 is a right side view of the sheath in another embodiment;

FIG. 3 is a top view of a jacket in another embodiment;

FIG. 4 is a bottom view of the sheath in another embodiment;

fig. 5 is a cross-sectional view A-A of fig. 4.

In the figure: 1. a first sidewall; 11. a first connection portion; 12. a first cantilever portion; 13. a first support structure; 131. a first concave portion; 132. a first convex portion; 2. a second sidewall; 21. a second connecting portion; 22. a second cantilever portion; 23. a second support structure; 231. a second concave portion; 232. a second convex portion; 3. a connecting wall; 4. a receiving groove; 5. a first fin; 6. and a second wing.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present utility model. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present utility model have not been shown or described in the specification in order to avoid obscuring the core portions of the present utility model, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

The utility model discloses a sheath, please refer to fig. 1-5, the sheath comprises a connecting wall 3, a first side wall 1 and a second side wall 2 which are oppositely arranged in a first direction, the first side wall 1 and the second side wall 2 are connected through the connecting wall 3 to enclose a containing groove 4 for containing corners of equipment, the first side wall 1 is provided with a first outer wall surface which is opposite to the containing groove 4 in the first direction, the second side wall 2 is provided with a second outer wall surface which is opposite to the containing groove 4 in the first direction, a first supporting structure 13 is arranged on the first outer wall surface, and a second supporting structure 23 is arranged on the second outer wall surface.

The first support structure 13 comprises a first recess 131 and a first protrusion 132, and the second support structure 23 comprises a second recess 231 and a second protrusion 232; the front projection of the first protrusion 132 on the reference plane is located within the front projection of the second recess 231 on the reference plane, the front projection of the second protrusion 232 on the reference plane is located within the front projection of the first recess 131 on the reference plane, and the reference plane is a preset plane, which may be any plane perpendicular to the first direction, so that when the device is stacked, the first supporting structure 13 of one of the two adjacent sheaths can be matched with the second supporting structure 23 of the other sheath in a concave-convex manner in the stacking direction to realize the supporting positioning of the stacked device.

In addition, in the first direction, the thickness of the first side wall 1 is equal to that of the second side wall 2, the protruding height of the first protruding part 132 on the first outer wall surface is equal to that of the second protruding part 232 on the second outer wall surface, so that compared with the sheath structure with protruding parts and recessed parts respectively arranged on one side of the two side walls, which is opposite to the accommodating groove 4, the sheath structure disclosed by the utility model can realize the sharing of left and right sheaths, and is beneficial to reducing the mold cost and the material operation management cost of the sheath; and can satisfy when stacking two adjacent sheath location supports in the direction, satisfy the stable support of being located the below sheath on the horizontal plane, help improving equipment support and stack stability.

Specifically, in some embodiments, with continued reference to fig. 1-5, the sheath has a generally U-shaped cross-section that is perpendicular to the reference plane and extends upwardly from the opening of the receiving slot 4, the first and second side walls 1, 2 forming two slot side walls of the U-shape, and the connecting wall 3 forming a slot bottom wall of the U-shape. When the sheath is used, four sheaths are configured on one device, two sheaths are respectively arranged on the left side and the right side of the device, the two sheaths on one side are positioned at the front end and the rear end of the device, the sheaths on the left side and the right side are respectively matched with the device in a right and left gesture of a notch of the accommodating groove 4, the first side wall 1 is provided with a first groove wall surface facing the accommodating groove 4, the second side wall 2 is provided with a second groove wall surface facing the accommodating groove 4, the first groove wall surface and the second groove wall surface are respectively attached to the upper surface and the lower surface of the device, and the inner wall surface of the connecting wall 3 facing the accommodating groove 4 is used for being attached to the left side surface or the right side surface of the device.

The jackets on the left and right sides may be shared, so that when a plurality of devices are stacked up and down, taking the left and right jackets at the front end as an example, the first support structure 13 of the jacket on the left side is located on the lower side, the second support structure 23 is located on the upper side, the first support structure 13 of the jacket on the right side is located on the upper side, and the second support structure 23 is located on the lower side.

Since the protruding height of the first protrusion 132 on the first outer wall surface is equal to the protruding height of the second protrusion 232 on the second outer wall surface, thus, the support on the horizontal plane is achieved by the first protrusion 132 in the first support structure 13 of the left sheath and the second protrusion 232 in the second support structure 23 of the right sheath, respectively, in the two sheaths located at the lowest left and right, so as to ensure the support stability of the plurality of devices.

Since the orthographic projection of the first convex portion 132 on the reference plane is located within the orthographic projection of the second concave portion 231 on the reference plane, the orthographic projection of the second convex portion 232 on the reference plane is located within the orthographic projection of the first concave portion 131 on the reference plane. Thus, among the plurality of jackets on the left side, the second concave part 231 of the second supporting structure 23 of the upper and lower adjacent jackets is matched with the first convex part 132 of the first supporting structure 13 of the upper jacket in a concave-convex manner, and the second convex part 232 of the second supporting structure 23 of the lower jacket is matched with the first concave part 131 of the first supporting structure 13 of the upper jacket in a concave-convex manner; among the plurality of jackets on the right side, the first convex part 132 of the first supporting structure 13 of the upper and lower adjacent jackets are in concave-convex fit with the second concave part 231 of the second supporting structure 23 of the upper jacket, and the first concave part 131 of the first supporting structure 13 of the lower jacket is in concave-convex fit with the second convex part 232 of the second supporting structure 23 of the upper jacket, so that the structural stability of the upper and lower devices when stacked is ensured.

In some embodiments, referring to fig. 5, the protruding height of the first protrusion 132 on the first outer wall surface is set to be equal to or smaller than the recessed depth of the second recess 231 on the second outer wall surface, and the protruding height of the second protrusion 232 on the second outer wall surface is set to be equal to or smaller than the recessed depth of the first recess 131 on the first outer wall surface; after the first supporting structure 13 and the second supporting structure 23 are in concave-convex fit, the second outer wall surface of the lower sheath in the upper and lower adjacent two sheaths on the left is attached to the first outer wall surface of the upper sheath, and the first outer wall surface of the lower sheath in the upper and lower adjacent two sheaths on the right is attached to the second outer wall surface of the upper sheath; the structure of the outer wall surface laminating of two upper and lower adjacent sheaths helps improving the structural stability that sheath and equipment stack from top to bottom.

Of course, the protruding height of the first protrusion 132 on the first outer wall surface may be larger than the recessed depth of the second recess 231 on the second outer wall surface, or the protruding height of the second protrusion 232 on the second outer wall surface may be larger than the recessed depth of the first recess 131 on the first outer wall surface, so that although there is a gap between two jackets adjacent to each other, structural stability of stacking of the apparatus and the jackets can be achieved by the protrusion and the recess engaged with each other.

In some embodiments, referring to fig. 1 and 3 to 5, the first side wall 1 of the sheath includes a first connection portion 11 and a first cantilever portion 12, the first connection portion 11 is connected between the first cantilever portion 12 and the connection wall 3, and the first support structure 13 is disposed on the first connection portion 11, so that the first support structure 13 is disposed near the connection wall 3, which facilitates shaping the sheath, and helps to improve the yield of the sheath; correspondingly, the second side wall 2 can also be provided to include a second connecting portion 21 and a second cantilever portion 22, the second connecting portion 21 is connected between the second cantilever portion 22 and the connecting wall 3, and the second supporting structure 23 is provided on the second connecting portion 21, so that the jacket can be conveniently formed, and the qualification rate of the finished jacket is improved.

Further, in some embodiments, the thickness of the first cantilever portion 12 is set smaller than the thickness of the first connecting portion 11, where the direction of the thickness refers to the direction of the thickness of the first sidewall 1, i.e., the first direction, and the thickness of the first cantilever portion 12 is further gradually reduced in the direction from the bottom of the accommodating groove 4 to the notch; correspondingly, the thickness of the second cantilever portion 22 can be smaller than that of the second connecting portion 21, and the thickness of the second cantilever portion 22 gradually decreases in the direction from the bottom of the accommodating groove 4 to the notch, so that the thickness of the position away from the connecting wall 3 on the first side wall 1 and the second side wall 2 is smaller than that of the position close to the connecting wall 3, and the thickness of the position away from the connecting wall 3 gradually decreases in the direction of the notch of the accommodating groove 4, thereby being convenient for the glue running during the injection molding of the sheath and being beneficial to improving the structural strength and stability of the sheath.

In some embodiments, referring to fig. 3 and 4, for a single sheath, the first support structure 13 and the second support structure 23 at two ends of the sheath in the first direction may be respectively provided with one, so as to simplify the structure of the sheath and facilitate the processing of the sheath. Of course, in other embodiments, in order to further improve the structural stability of the device when stacked, the first supporting structure 13 and the second supporting structure 23 on the single sheath may also be respectively provided with a plurality of first supporting structures 13, for example, a plurality of first supporting structures 13 may be distributed at different positions on the first outer wall surface, a plurality of second supporting structures 23 may be distributed at different positions on the second outer wall surface, and a plurality of groups of first supporting structures 13 or a plurality of groups of second supporting structures 23 may be all arranged at intervals in a third direction perpendicular to the notch orientation of the accommodating groove 4 and parallel to the reference surface; among the plurality of support structures, the first support structures 13 and the second support structures 23 are correspondingly arranged in the first direction, and the number of the first support structures 13 is equal to that of the second support structures 23, so that the support positioning cooperation of the upper sheath and the lower sheath which are stacked is realized.

In order to further improve the structural stability of the device stacked and supported on the horizontal plane, in some embodiments, the number of the protrusions and the recesses in each support structure is set to be plural, and the number of the first protrusions 132 and the first recesses 131 in the first support structure 13 is set to be plural, for example, three may be set, respectively, please refer to fig. 1 to 5, correspondingly, the positions of the second protrusions 232 and the second recesses 231 in the second support structure 23 and the first recesses 131 and 132 in the first support structure 13 correspond to each other in the first direction, and the number of the second protrusions 232 and the second recesses 231 in the second support structure 23 may also be set to be three, respectively, to be in one-to-one fit with the protrusions and recesses in the first support structure 13, so as to realize stable support of the device bottom and the device stacked.

In some embodiments, the number of the first protrusions 132 and the number of the first recesses 131 may not be equal, for example, in embodiments in which the first protrusions 132 are provided with three, the number of the first recesses 131 may not be limited; the second concave parts 231 may be provided with only one, three first convex parts 132 are continuously provided, and when the apparatus is stacked, the three first convex parts 132 of one of the two adjacent sheaths are matched with one second concave part 231 of the other sheath, so as to realize supporting and positioning matching between the two sheaths; or the second concave portion 231 may be provided with two, only two, and three first convex portions 132, one of the two concave portions being engaged with two consecutive first convex portions 132 in the adjacent sheath, and the other concave portion being engaged with a separately provided first convex portion 132 in the adjacent sheath. In summary, in a structure in which one or two of the first convex portions 132 and the first concave portions 131 in the first support structure 13 are respectively provided in plurality, the second concave portions 231 and the second convex portions 232 in the corresponding second support structure 23 respectively correspond to the first convex portions 132 and the first concave portions 131 in the first direction, and the number of the second concave portions 231 is smaller than or equal to the number of the first convex portions 132, and the number of the first concave portions 131 is smaller than or equal to the number of the second convex portions 232.

In some embodiments, referring to fig. 1, 3, 4 and 5, the first protrusion 132 and the first recess 131 in the first support structure 13 are disposed continuously in the second direction, and the second protrusion 232 and the second recess 231 in the second support structure 23 are also disposed continuously in the second direction, where the second direction may be the same direction in the reference plane as the slot opening of the receiving slot 4, and in other embodiments, the second direction may be any direction in the reference plane. The structure with the convex part and the concave part continuously arranged in the second direction is convenient for glue to be moved during injection molding of the sheath, and is beneficial to improving the qualification rate of the finished products of the sheath.

Further, in an embodiment in which one or both of the convex portion and the concave portion in each support structure are provided with a plurality of convex portions and concave portions, referring to fig. 3 to 5, the convex portions and the concave portions are provided continuously in the second direction, that is, adjacent first convex portions 132 and first concave portions 131 are provided next to each other in the second direction, and the first convex portions 132 and the first concave portions 131 are arranged alternately in the second direction, that is, one first convex portion 132 is provided between adjacent two first concave portions 131, and one first concave portion 131 is provided between adjacent two first convex portions 132; in the second support structure 23 corresponding to the first support structure 13, the second protrusions 232 correspond to the first recesses 131 in the first direction and have the same number, and the second recesses 231 correspond to the first protrusions 132 in the first direction and have the same number, so as to increase the contact area of the protrusions and the recesses, and realize stable support matching of two adjacent sheaths in the stacking direction.

Of course, the first convex portion 132 and the first concave portion 131 may also be arranged at intervals in the second direction, that is, between adjacent first concave portions 131 and first convex portions 132, by a part of the first outer wall surface interval.

In some embodiments, referring to fig. 2 to 4, in order to improve structural stability when the apparatus is stacked, the first protrusion 132, the first recess 131, and the second protrusion 232, and the second recess 231 in the first support structure 13 and the second support structure 23 are provided to have preset lengths, that is, to have a certain length, and the lengths of the first protrusion 132, the first recess 131, the second protrusion 232, and the second recess 231 are the same, and the first protrusion 132, the first recess 131, the second protrusion 232, and the second recess 231 are respectively arranged to extend in respective lengths, and the lengths of the first protrusion 132, the first recess 131, the second protrusion 232, and the second recess 231 may be provided to extend in a third direction, which may be perpendicular to the notch orientation of the accommodating groove 4 and parallel to the reference plane, referring to fig. 4. In other embodiments, the third direction may not be limited to only the notch orientation perpendicular to the receiving groove 4, and may be any direction within the reference plane. The structure in which the protrusions and recesses extend in the third direction can ensure that no misalignment occurs between the upper and lower devices when the devices are rocked.

Further, the first convex portion 132, the first concave portion 131, the second convex portion 232, and the second concave portion 231 extending in the third direction are directed. Referring to fig. 5, the cross-sectional shape of the first protrusion 132, i.e., the cross-sectional shape in the vertical extending direction is semicircular, and the cross-sectional dimension of the second recess 231 is semicircular, and the radius of the cross-sectional shape of the first protrusion 132 is smaller than or equal to the radius of the cross-sectional shape of the second recess 231, so that the first protrusion 132 and the second recess 231 can be conveniently engaged when the apparatus is stacked. It is also possible to provide that the cross-sectional shape of the second protrusion 232 and the cross-sectional shape of the first recess 131 are also semicircular, and the radius of the cross-sectional shape of the second protrusion 232 is smaller than or equal to the radius of the cross-sectional shape of the first recess 131, so that the first recess 131 is convenient to be engaged with the second protrusion 232 when the apparatus is stacked.

In other embodiments, the cross-sectional shape of each protrusion and each recess is not limited to semi-circular. In some embodiments, the cross-sectional shape of the first protrusion 132 may be rectangular, trapezoidal, or any other shaped shape that facilitates injection molding, and the corresponding second recess 231 has a structure that matches the structure of the first protrusion 132; in addition, the cross section of the second protrusion 232 may be rectangular, trapezoidal or other special-shaped shapes that are convenient for injection molding, and the corresponding structure of the first concave 131 is matched with the structure of the second protrusion 232, so as to increase the contact area of concave-convex matching and realize the stable supporting matching of two adjacent sheaths in the stacking direction.

In addition, in some embodiments, referring to fig. 2 to 4, the sheath further has a first fin 5 and a second fin 6, both of which are located at one side of the sheath in the third direction, both of which extend in the third direction, the first fin 5 is connected to the connection between the first side wall 1 and the connection wall 3, the second fin 6 is connected to the connection between the second side wall 2 and the connection wall 3, the sheath is assembled on a device, and the two fins on the sheath can protect edges of the end face of the device to avoid collision of edges of the device.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims

1. The sheath is characterized by comprising a connecting wall, a first side wall and a second side wall which are oppositely arranged in a first direction, wherein the first side wall and the second side wall are connected through the connecting wall to form an accommodating groove for accommodating corners of equipment, the first side wall is provided with a first outer wall surface which is opposite to the accommodating groove in the first direction, the second side wall is provided with a second outer wall surface which is opposite to the accommodating groove in the first direction, the first outer wall surface is provided with a first supporting structure, and the second outer wall surface is provided with a second supporting structure;

2. The sheath of claim 1, wherein the first protrusion has a protrusion height on the first outer wall surface that is equal to or less than a recess depth of the second recess on the second outer wall surface, and wherein the second protrusion has a protrusion height on the second outer wall surface that is equal to or less than a recess depth of the first recess on the first outer wall surface.

3. The sheath of claim 1, wherein the first support structure and the second support structure are each provided in plurality and distributed at different locations of the corresponding first outer wall surface and second outer wall surface; the first support structures and the second support structures are in one-to-one correspondence.

4. The sheath of claim 1, wherein the number of first protrusions is plural in the first support structure and the second support structure, and the second recesses are in one-to-one correspondence with the first protrusions; and/or the number of the first concave parts is set to be a plurality, and the second convex parts are in one-to-one correspondence with the first concave parts.

5. The sheath of claim 4, wherein the first protrusions and the first recesses are staggered in a second direction, the second direction being any direction within the reference plane.

6. The sheath of claim 1, wherein the first protrusion, the first recess, the second protrusion, and the second recess each have a predetermined length, and the length directions of the first protrusion, the first recess, the second protrusion, and the second recess are all the same.

7. The sheath of claim 6, wherein the cross-sectional shape of the first protrusion and the cross-sectional shape of the second recess are semi-circular, and wherein the radius of the cross-sectional shape of the first protrusion is less than or equal to the radius of the cross-sectional shape of the second recess;

8. The sheath of claim 6, wherein the first protrusion has a rectangular or trapezoidal cross-sectional shape, and the second recess has a configuration that matches the configuration of the first protrusion;

9. The sheath of claim 1, wherein the first sidewall includes a first connection portion and a first cantilever portion, the first connection portion being connected between the first cantilever portion and the connection wall, the first support structure being disposed on the first connection portion;

10. The sheath of claim 9, wherein the thickness of the first cantilever portion is less than the thickness of the first connection portion, the thickness of the first cantilever portion gradually decreasing in a direction from the groove bottom to the groove opening; and/or the thickness of the second cantilever part is smaller than that of the second connecting part, and the thickness of the second cantilever part gradually decreases in the direction from the groove bottom to the groove opening.