Water cup support

Abstract

The utility model relates to a water cup support which comprises a shell, the shell is provided with an installation cavity for installing a cup holder and a cup holder, the cup holder and the cup holder are arranged in the installation cavity in a hinged mode, a linkage structure is arranged between the cup holder and the cup holder and comprises a linkage plate arranged between the cup holder and the cup holder, and the linkage plate and the cup holder are connected through a first hinge structure. The linkage plate is connected with the cup holder through a second hinge structure, the first hinge structure is arranged on one side of the hinge position of the cup holder and the shell, the second hinge structure is arranged on one side of the hinge position of the cup holder and the shell, and the distance between the hinge positions of the cup holder, the cup holder and the shell is larger than the distance between the first hinge structure and the second hinge structure. The simple lever principle is formed through the linkage plate, damage cannot be caused after long-time use, meanwhile, the production cost is low, and maintenance is fast and convenient.

Description

Technical Field

[0001] This utility model relates to the field of support technology, specifically to a water cup support. Background Technology

[0002] A cup holder is a compact and portable drinking accessory, usually made of lightweight materials such as plastic or silicone. It is easy to fold or disassemble and is suitable for outdoor activities, travel, or daily commutes. It can securely hold cups or bottles of various sizes to prevent them from tipping over, while freeing up the hands for convenient drinking anytime. Some models also have waterproof, non-slip, or adjustable functions to adapt to different scenarios and needs, ensuring ease of use and safety.

[0003] CN105799572B discloses a car cup holder, including a shell, upper and lower plates, a slider, a sliding shaft, a spring, a self-locking mechanism, a torsion spring, and several connecting rods. The shell is a rectangular hollow structure, with a torsion spring frame, a limiting platform, and a lower plate rotating frame on the bottom surface of the inner cavity. The upper plate and the shell form a rotating joint, with a circular cup hole in the middle of the upper plate. A sliding shaft and a slider are installed at each end of the upper plate's inner side, and the spring is mounted on the sliding shaft. The lower plate and the shell form a rotating joint, with a circular boss on the outer side of the lower plate, and the torsion spring is mounted on the torsion spring. Inside the frame, the arc rod, the upper plate, and the long straight rod form a revolute joint; the long straight rod and the slider form a revolute joint; the sliding groove rod, the outer shell, and the short straight rod form a revolute joint; and the short straight rod is connected to the round hole near the middle of the inner side of the lower plate via a pin to form a revolute joint. In this technology, the upper and lower plates are linked by a torsion spring and a connecting rod. However, repeated stretching of the torsion spring during long-term use can lead to a decrease in its elasticity, causing damage to the linkage function. In addition, the linkage structure components of this technology have many parts, resulting in high production and maintenance costs. Therefore, this technology still has some room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a water cup holder to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water cup holder, comprising a housing, wherein the housing has an installation cavity for mounting a cup holder and a cup tray, the cup holder and cup tray are hinged in the installation cavity, and a linkage structure is provided between the cup holder and the cup tray. The linkage structure comprises a linkage plate disposed between the cup holder and the cup tray, the linkage plate and the cup tray are connected by a first hinge structure, and the linkage plate and the cup holder are connected by a second hinge structure. The first hinge structure is disposed on one side of the hinge between the cup tray and the housing, the second hinge structure is disposed on one side of the hinge between the cup holder and the housing, and the distance between the hinges of the cup tray, the cup holder, and the housing is greater than the distance between the first hinge structure and the second hinge structure.

[0006] Using the above technical solution, the linkage plate is connected to the cup holder through a first hinge structure and to the cup holder through a second hinge structure. The distance between the hinge points of the cup holder, cup holder, and the shell is greater than the distance between the first and second hinge structures. When an external force is applied to the cup holder, the cup holder rotates around its hinge point with the shell, causing the first hinge structure to move in one direction. After receiving the movement of the cup holder, the linkage plate converts it into a combination of translational and rotational motion, and transmits the force to the cup holder through the second hinge structure. This causes the cup holder to rotate around its hinge point with the shell. The distance between the hinge point of the shell and the hinge point of the cup holder is greater than the distance between the first and second hinge structures, creating a lever between the linkage plate, cup holder, and cup holder. When force is applied to the cup holder, through the transmission of force by the linkage plate and the amplification of the lever effect, a large force can be generated on the cup holder, causing the cup holder to open or close. The linkage plate forms a simple lever principle that will not cause damage even after prolonged use. It also has low production costs and is quick and convenient to maintain.

[0007] The aforementioned cup holder can be further configured as follows: the first hinge structure includes a first hinge ear disposed on one side of the cup holder, the linkage plate is provided with a second hinge ear at one end facing the cup holder, the first hinge ear and the second hinge ear are rotatably connected by a first connecting shaft, and the linkage plate is provided with a placement groove for the first hinge ear to be placed when the cup holder is closed.

[0008] By adopting the above technical solution, a first hinge ear is provided on one side of the cup holder, a second hinge ear is provided on one end of the linkage plate, and a rotational connection is achieved by using a first connecting shaft. The placement groove opened on the linkage plate for placing the first hinge ear plays a role in storing and avoiding the first hinge ear when the cup holder is closed, and at the same time, it can limit the shaking of the first hinge ear when the cup holder is closed, thereby enhancing the stability and reliability of the structure.

[0009] The aforementioned cup holder can be further configured such that: the second hinge structure includes a third hinge lug disposed on one side of the cup holder, the linkage plate is provided with a fourth hinge lug facing the cup holder, and the third hinge lug and the fourth hinge lug are rotatably connected by a second connecting shaft.

[0010] By adopting the above technical solution, a third hinge ear is provided on one side of the cup holder, and a fourth hinge ear is provided on the linkage plate facing the cup holder. The linkage plate is rotated and connected through a second connecting shaft to ensure that when the cup holder transmits movement through the linkage plate, the cup holder can make the corresponding linkage action in a timely and accurate manner.

[0011] The aforementioned cup holder can be further configured as follows: the cup holder has a cup hole in the center, the cup holder has a cup groove on one side for placing a cup, the cup holder has a positioning protrusion on the side away from the cup groove, the size of the positioning protrusion is adapted to the size of the cup hole, the cup holder is placed above the cup holder when the cup holder and cup holder are closed, causing the positioning protrusion to be placed in the cup hole, and the housing has a locking structure for locking the cup holder when the cup holder is closed.

[0012] The above technical solution provides a space for placing cups by the cup hole in the center of the cup holder and the cup groove on one side of the cup holder. The positioning protrusion on the side of the cup holder away from the cup groove is sized to match the cup hole. When the cup holder and cup holder are closed, the positioning protrusion is placed in the cup hole, making the cup holder and cup holder close more tightly. The locking structure on the shell can lock the cup holder when it is closed, further ensuring that the cup holder and cup holder are in a stable closed state when not in use.

[0013] The aforementioned cup holder can be further configured as follows: the locking structure includes a locking cavity located within the mounting cavity on the side of the housing facing the cup holder; a connecting post is provided within the locking cavity for a snap-fit ​​component to pass through; the snap-fit ​​component can move vertically via the connecting post; the snap-fit ​​component is placed within the locking cavity; a first elastic element is sleeved on the connecting post; the bottom of the snap-fit ​​component abuts against the first elastic element; the top of the snap-fit ​​component abuts against the inner wall of the locking cavity to axially limit the snap-fit ​​component; a snap-fit ​​protrusion is provided on the top of the snap-fit ​​component; a first snap-fit ​​hole is provided at the end of the cup holder; when the cup holder is closed, the first snap-fit ​​hole engages and locks with the snap-fit ​​protrusion; and a release button is also provided within the locking cavity for pressing down the snap-fit ​​component to release the cup holder from locking.

[0014] Using the above technical solution, the snap-fit ​​component is inserted into the connector and can move vertically through the connecting post. The bottom of the snap-fit ​​component abuts against the first elastic element, and its top abuts against the inner wall of the locking cavity to cause the snap-fit ​​component to be axially limited. When the cup holder is closed, the first snap-fit ​​hole of the cup holder is snapped and locked with the snap-fit ​​protrusion. When it is necessary to unlock, press the unlock button to press down the snap-fit ​​component to unlock the cup holder and thus open the cup holder and cup tray.

[0015] The aforementioned cup holder can be further configured as follows: the locking cavity sidewall is provided with a plurality of second snap-fit ​​holes, the release button is provided with snap-fit ​​feet on both sides that snap-fit ​​with the second snap-fit ​​holes, the snap-fit ​​feet are fitted with second elastic elements, the release button is disposed on one side of the snap-fit ​​member through the snap-fit ​​feet and can move axially within the locking cavity, the snap-fit ​​member is provided with a plurality of pressing grooves, the pressing grooves and the sidewalls of the pressing grooves are provided with inclined surfaces, the release button is provided with an inclined protrusion on the side facing the inclined surface, and the inclined protrusion abuts against the inclined surface.

[0016] Using the above technical solution, the second snap-fit ​​hole on the side wall of the locking cavity cooperates with the snap-fit ​​feet on both sides of the release button, which are fitted with the second elastic elements, so that the release button can be stably set in the locking cavity and realize axial movement. The pressing groove opened on the snap-fit ​​member and the inclined surface of its side wall abut against the inclined protrusion on the release button. When the release button is pressed, the inclined protrusion can press down on the snap-fit ​​member through the inclined surface, causing the snap-fit ​​protrusion to disengage from the first snap-fit ​​hole and release the lock on the cup holder.

[0017] The aforementioned cup holder can be further configured such that: the housing has hinge holes symmetrically arranged on the side wall of the mounting cavity, and the cup holder and cup rack have hinge protrusions on both sides that are hinged to the hinge holes.

[0018] By adopting the above technical solution, the hinge holes symmetrically arranged on the side wall of the housing mounting cavity cooperate with the hinge protrusions on both sides of the cup holder and cup rack to form a stable and balanced hinge structure. The symmetrically arranged hinge holes and hinge protrusions ensure that the cup holder and cup rack are subjected to uniform force on both sides when rotating around the hinge point, avoiding shaking, jamming or tilting caused by uneven force.

[0019] The aforementioned cup holder can be further configured such that: a protective outer shell is provided on one side of the housing, and the surface of the protective outer shell is provided with several connection holes for connecting to the outside.

[0020] By adopting the above technical solution, the protective shell can prevent the cup holder, cup tray and structural plate from being damaged by external collisions, scratches and dust, thereby effectively extending the service life of the cup holder. The several connection holes opened on the surface of the protective shell can be used to stably connect the cup holder to external vehicles or bags, so that it can be adapted to different usage scenarios.

[0021] The beneficial effects of this utility model are as follows: the linkage plate is connected to the cup holder through the first hinge structure and to the cup rack through the second hinge structure. The distance between the cup holder, cup rack and the hinge of the shell is greater than the distance between the first hinge structure and the second hinge structure. The linkage plate forms a simple lever principle, which will not cause damage under long-term use. At the same time, the production cost is low and the maintenance is quick and convenient. Attached Figure Description

[0022] Figure 1 This is a diagram showing the storage state of this utility model;

[0023] Figure 2 This is a diagram showing the unfolded state of this utility model;

[0024] Figure 3 This is an exploded view of the structure of this utility model;

[0025] Figure 4 This is a structural diagram of the release button of this utility model;

[0026] Label annotations: 1-Shell, 2-Cup holder, 3-Cup support, 4-Mounting cavity, 5-Linkage plate, 6-First hinge ear, 7-Second hinge ear, 8-First connecting shaft, 9-Placement groove, 10-Third hinge ear, 11-Fourth hinge ear, 12-Second connecting shaft, 13-Cup hole, 14-Cup placement groove, 15-Positioning protrusion, 16-Locking cavity, 17-Snap-fit ​​component, 18-Connecting post, 19-First elastic component, 20-Snap-fit ​​protrusion, 21-First snap-fit ​​hole, 22-Release button, 23-Second snap-fit ​​hole, 24-Snap-fit ​​foot, 25-Second elastic component, 26-Pressing groove, 27-Beveled surface, 28-Beveled surface protrusion, 29-Hinge hole, 30-Hinge protrusion, 31-Protective shell, 32-Connecting hole. Detailed Implementation

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0028] like Figure 1-4The present invention provides the following technical solution: a water cup holder, including a housing 1, with an installation cavity 4 for mounting a cup holder 1 and a cup tray 3. The cup holder 1 and the cup tray 3 are hinged in the installation cavity 4. A linkage structure is provided between the cup holder 1 and the cup tray 3. The linkage structure includes a linkage plate 5 disposed between the cup holder 1 and the cup tray 3. The linkage plate 5 is connected to the cup tray 3 by a first hinge structure, and the linkage plate 5 is connected to the cup holder 1 by a second hinge structure. The first hinge structure is disposed on one side of the hinge between the cup tray 3 and the housing 1, and the second hinge structure is disposed on one side of the hinge between the cup holder 1 and the housing 1. The distance between the hinges of the cup tray 3, the cup holder 1, and the housing 1 is greater than the distance between the first hinge structure and the second hinge structure. The linkage plate 5 is connected by... The first hinge structure is connected to the cup holder 3, and to the cup holder 1 via the second hinge structure. The distance between the hinge points of the cup holder 3, cup holder 1, and housing 1 is greater than the distance between the first and second hinge structures. When an external force is applied to the cup holder 3, the cup holder 3 rotates around its hinge point with the housing 1, causing the first hinge structure to move in one direction. Upon receiving the movement of the cup holder 3, the linkage plate 5 converts it into a combination of translational and rotational motion, and transmits the force to the cup holder 1 through the second hinge structure. This causes the cup holder 1 to rotate around its hinge point with the housing 1. The distance between the hinge point of the housing 1 and the hinge point of the cup holder 1 is greater than the distance between the first and second hinge structures, thus forming a [missing information - likely a specific connection or structure]. A lever, when applied to the cup holder 3, generates a large force on the cup holder 1 through the transmission of force via the linkage plate 5 and the amplification of the lever effect, thereby opening or closing the cup holder 1. The linkage plate 5 forms a simple lever principle, which will not cause damage even after prolonged use. It also has low production costs and is quick and easy to maintain. The first hinge structure includes a first hinge lug 6 on one side of the cup holder 3, and a second hinge lug 7 on the end of the linkage plate 5 facing the cup holder 3. The first hinge lug 6 and the second hinge lug 7 are rotatably connected by a first connecting shaft 8. The linkage plate 5 has a placement groove 9 on the side facing the cup holder 3 for the first hinge lug 6 to be placed when the cup holder 3 is closed. By setting the first hinge lug 6 on one side of the cup holder 3 and the second hinge lug 7 on one end of the linkage plate 5, and utilizing... A first connecting shaft 8 enables a rotary connection. A placement slot 9 on the linkage plate 5, for the placement of the first hinge ear 6, serves to store and avoid the first hinge ear 6 when the cup holder 3 is closed, while also limiting the wobbling of the first hinge ear 6 when the cup holder 3 is closed, thus enhancing the stability and reliability of the structure. The second hinge structure includes a third hinge ear 10 located on one side of the cup holder 1, and a fourth hinge ear 11 located on the side of the linkage plate 5 facing the cup holder 1. The third hinge ear 10 and the fourth hinge ear 11 are rotatably connected via a second connecting shaft 12. The third hinge ear 10 on one side of the cup holder 1 and the fourth hinge ear 11 on the side of the linkage plate 5 facing the cup holder 1, and their rotatable connection via the second connecting shaft 12, ensure that when the cup holder 3 transmits movement through the linkage plate 5...The cup holder 1 can make corresponding coordinated movements in a timely and accurate manner.

[0029] like Figure 1-4The present invention provides the following technical solution: a water cup holder, wherein a cup holder 1 has a water cup hole 13 in the center, a cup tray 3 has a cup placement groove 14 on one side for placing a water cup, and a positioning protrusion 15 is provided on the side of the cup tray 3 away from the cup placement groove 14. The size of the positioning protrusion 15 is adapted to the size of the water cup hole 13. When the cup tray 1 and the cup tray 3 are closed, the cup tray 1 is placed above the cup tray 3, causing the positioning protrusion 15 to be placed in the water cup hole 13. The housing 1 has a locking structure for locking the cup tray 1 when the cup tray 1 is closed. The water cup hole 13 in the center of the cup holder 1 and the cup placement groove 14 on one side of the cup tray 3 provide space for placing a water cup. The positioning protrusion 15 on the side of the cup tray 3 away from the cup placement groove 14, and its size is adapted to the size of the water cup hole 13, provides a locking mechanism when the cup tray 3 and the cup tray 1 are closed. The positioning protrusion 15 is placed inside the cup hole 13 to make the cup holder 1 and cup tray 3 close more tightly. The locking structure provided on the housing 1 can lock the cup holder 1 when it is closed, further ensuring that the cup holder 1 and cup tray 3 are in a stable closed state when not in use. The locking structure includes a locking cavity 16 located on the side of the housing 1 facing the cup tray 3 and located in the mounting cavity 4. The locking cavity 16 is provided with a connecting post 18 for the snap-fit ​​member 17 to pass through. The snap-fit ​​member 17 can move vertically through the connecting post 18. The snap-fit ​​member 17 is placed in the locking cavity 16. The connecting post 18 is fitted with a first elastic member 19. The bottom of the snap-fit ​​member 17 abuts against the first elastic member 19, and the top of the snap-fit ​​member 17 abuts against the inner wall of the locking cavity 16 to axially limit the snap-fit ​​member 17. The top of the snap-fit ​​member 17 is provided with a snap-fit ​​protrusion. Block 20, the cup holder 1 has a first snap-fit ​​hole 21 at its end. When the cup holder 1 is closed, the first snap-fit ​​hole 21 engages and locks with the snap-fit ​​protrusion 20. The locking cavity 16 also has a release button 22 that can be pressed down to release the cup holder 1 from the lock. The snap-fit ​​17 passes through the connecting block and can move vertically through the connecting post 18. The bottom of the snap-fit ​​17 abuts against the first elastic member 19, and its top abuts against the inner wall of the locking cavity 16 to axially limit the snap-fit ​​17. When the cup holder 1 is closed, the first snap-fit ​​hole 21 of the cup holder 1 engages and locks with the snap-fit ​​protrusion 20. To release the lock, press the release button 22 to press down the snap-fit ​​17 to release the lock on the cup holder 1, thereby opening the cup holder 1 and the cup tray 3. The side wall of the locking cavity 16 has several second snap-fit ​​holes 23. The locking member 17 has locking feet 24 on both sides that engage with the second locking holes 23. The locking feet 24 are fitted with second elastic elements 25. The release button 22 is positioned on one side of the locking member 17 via the locking feet 24 and can move axially within the locking cavity 16. The locking member 17 has several pressing grooves 26. Inclined surfaces 27 are provided between the pressing grooves 26 and on the sidewalls of the pressing grooves 26. The release button 22 has an inclined protrusion 28 facing the inclined surface 27, which abuts against the inclined surface 27. The second locking holes 23 on the sidewalls of the locking cavity 16 cooperate with the locking feet 24 on both sides of the release button 22, which are fitted with the second elastic elements 25, allowing the release button 22 to be stably positioned within the locking cavity 16 and to move axially. The pressing grooves 26 and the inclined surfaces 27 on the sidewalls of the locking member 17...The inclined protrusion 28 on the release button 22 abuts against each other. When the release button 22 is pressed, the inclined protrusion 28 can press down on the latching member 17 through the inclined surface 27, causing the latching protrusion 20 to disengage from the first latching hole 21 and release the lock on the cup holder 1. The housing 1 has hinge holes 29 symmetrically arranged on the side wall of the mounting cavity 4. The cup holder 3 and the cup holder 1 have hinge protrusions 30 on both sides that are hinged to the hinge holes 29. The hinge holes 29 symmetrically arranged on the side wall of the mounting cavity 4 of the housing 1 and the hinge protrusions 30 on both sides of the cup holder 3 and the cup holder 1 cooperate with each other to form a stable and balanced hinge structure. The symmetrically arranged hinge holes 29 and hinge protrusions 30 This design ensures that the cup holder 3 and cup rack 1 are evenly stressed on both sides when rotating around the hinge point, preventing wobbling, jamming, or tilting caused by uneven stress. A protective outer shell 31 is provided on one side of the housing 1. The surface of the protective outer shell 31 has several connection holes 32 for external connection. The protective outer shell 31 protects the cup rack 1, cup holder 3, and structural plate from external impacts, scratches, and dust damage, effectively extending the lifespan of the cup holder. The connection holes 32 on the surface of the protective outer shell 31 can be used to stably connect the cup holder to external vehicles or bags, adapting it to different usage scenarios.

[0030] The beneficial effects of this utility model are as follows: the linkage plate 5 is connected to the cup holder 3 through the first hinge structure and to the cup holder 1 through the second hinge structure. The distance between the hinge points of the cup holder 3, the cup holder 1 and the shell 1 is greater than the distance between the first hinge structure and the second hinge structure. The linkage plate 5 forms a simple lever principle, which will not cause damage under long-term use. At the same time, the production cost is low and maintenance is quick and convenient.

Claims

1. A water cup holder, comprising a housing, wherein the housing has an installation cavity for mounting a cup holder and a cup tray, the cup holder and cup tray being hinged to the installation cavity, and a linkage structure is provided between the cup holder and the cup tray, characterized in that: The linkage structure includes a linkage plate disposed between the cup holder and the cup tray. The linkage plate and the cup tray are connected by a first hinge structure, and the linkage plate and the cup holder are connected by a second hinge structure. The first hinge structure is disposed on one side of the hinge between the cup tray and the housing, and the second hinge structure is disposed on one side of the hinge between the cup holder and the housing. The distance between the hinges of the cup tray, the cup holder, and the housing is greater than the distance between the first hinge structure and the second hinge structure.

2. The water cup holder according to claim 1, characterized in that: The first hinge structure includes a first hinge ear disposed on one side of the cup holder, and a second hinge ear disposed on the end of the linkage plate facing the cup holder. The first hinge ear and the second hinge ear are rotatably connected by a first connecting shaft. The linkage plate has a placement groove on the side facing the cup holder for placing the first hinge ear when the cup holder is closed.

3. A water cup holder according to claim 1, characterized in that: The second hinge structure includes a third hinge lug disposed on one side of the cup holder, and a fourth hinge lug disposed on the side of the linkage plate facing the cup holder. The third hinge lug and the fourth hinge lug are rotatably connected by a second connecting shaft.

4. A water cup holder according to claim 3, characterized in that: The cup holder has a water cup hole in the center, and the cup holder has a cup groove on one side for placing a water cup. The cup holder has a positioning protrusion on the side away from the cup groove. The size of the positioning protrusion is adapted to the size of the water cup hole. When the cup holder and cup holder are closed, the cup holder is placed above the cup holder, causing the positioning protrusion to be placed in the water cup hole. The housing has a locking structure for locking the cup holder when it is closed.

5. A water cup holder according to claim 4, characterized in that: The locking structure includes a locking cavity located within the mounting cavity on the side of the housing facing the cup holder. A connecting post is provided within the locking cavity for a snap-fit ​​component to pass through. The snap-fit ​​component can move vertically via the connecting post. The snap-fit ​​component is placed within the locking cavity. A first elastic element is sleeved on the connecting post. The bottom of the snap-fit ​​component abuts against the first elastic element, and the top of the snap-fit ​​component abuts against the inner wall of the locking cavity, causing the snap-fit ​​component to be axially limited. A snap-fit ​​protrusion is provided on the top of the snap-fit ​​component. A first snap-fit ​​hole is provided at the end of the cup holder. When the cup holder is closed, the first snap-fit ​​hole engages with the snap-fit ​​protrusion to lock. The locking cavity also includes a release button that can be pressed down to release the cup holder from locking.

6. A water cup holder according to claim 5, characterized in that: The locking cavity sidewall has several second locking holes. The release button has locking feet on both sides that engage with the second locking holes. The locking feet are fitted with second elastic elements. The release button is located on one side of the locking element through the locking feet and can move axially within the locking cavity. The locking element has several pressing grooves. The pressing grooves and the sidewalls of the pressing grooves are provided with inclined surfaces. The release button has an inclined protrusion on the side facing the inclined surface. The inclined protrusion abuts against the inclined surface.

7. A water cup holder according to any one of claims 1-3, characterized in that: The housing has hinge holes symmetrically arranged on the side wall of the mounting cavity, and the cup holder and cup rack have hinge protrusions on both sides that are hinged to the hinge holes.

8. A water cup holder according to any one of claims 1-3, characterized in that: The housing has a protective outer shell on one side, and the surface of the protective outer shell has several connection holes for connecting to the outside.

Images