TWI569710B - Tray module - Google Patents

Description

Pallet module

The invention relates to a tray module, in particular to a tray module suitable for an electronic device.

A high-density video processing server usually has multiple independent video processing service units (that is, boards with video processing services) installed in the server chassis. In order to facilitate installation and maintenance, a plurality of trays slidably received in the server chassis are often used to carry the video processing service units. The existing tray usually includes a base and a cover disposed on the base. The cover and the base form an accommodating space, and the video processing service unit is fixedly disposed in the accommodating space.

In particular, before the high-density video processing server is shipped or used, these video processing service units are tested for soft and hard hardware to detect the quality of the hardware and whether the software functions meet the specifications, thus ensuring high density. The video processing server works fine when in use.

When the existing video processing service unit is tested, the tray module loaded with the video processing service unit is first inserted into the server chassis, so that the golden finger on the video processing service unit is connected with the backplane installed in the server chassis, thereby Signal transmission and power supply are then performed. Then, the external test line is connected to the test port on the video processing service unit to implement the application and transmission of the test signal, and then the response is measured to complete the test of the corresponding project.

However, since the existing tray is not provided with an associated avoidance structure, it is inconvenient for the tester to connect the external test line directly to the test cassette. Therefore, it is often necessary to remove the cover, thereby connecting the external test line to the test cassette. In this way, it is not convenient to test the operation, and it is also easy to damage the video processing service unit.

It is an object of the present invention to provide a tray module for solving the inconvenience caused by the need to remove the cover in the tray module during testing of the circuit board in the prior art and for easily damaging one or more problems in the circuit board.

In order to solve the above problems, the present invention provides a tray module, which is suitable for plugging and unplugging a connector of a backplane, and electrically connecting or disconnecting the electrical connector to the backboard through the connector. The tray module includes: a tray body; a cover body disposed on the tray body and forming an accommodating space with the tray body; and a circuit board disposed in the accommodating space; wherein The tray module has a first end surface and a second end surface. The first end surface is provided with a first opening, and the second end surface is provided with a second opening. The first end surface is perpendicular to the second end surface.

In a preferred embodiment of the above-mentioned tray module, the first end surface of the tray module corresponds to one of the circuit boards, or a button component, or a light.

In a preferred embodiment of the accessory technology of the tray module, the tray module further includes: a handle is pivotally disposed on the tray body and pivoted relative to the tray body in one of a free position and a locking position; and an elastic locking member is fixed on the tray body; Wherein, when the handle is in the free position, the handle pushes the tray body toward the backboard, so that one of the circuit boards is electrically connected to the backboard The connector, while the elastic lock automatically locks the handle to the tray body; when the handle is in the locking position, the handle is disengaged from the elastic lock, and then rotated away The tray body is pulled outward to disengage the connector of the circuit board from the connector of the backplane.

In a preferred embodiment of the above-mentioned tray module, the tray module further includes: a positioning pin disposed on the handle; and a positioning hole disposed on the tray body; When the handle is pivoted to the locking position, the positioning pin is inserted into the positioning hole, thereby achieving the limitation of the handle.

In a preferred embodiment of the above-mentioned tray module, the cover body comprises: a cover body connected to the tray body; and a latch disposed on the cover body for the cover The main body is locked on the tray body; wherein the cover body is a convex-shaped structure having an open end, wherein at least one engaging portion is respectively disposed on opposite sides of the cover body, and the tray body is At least one engaging engagement portion that cooperates with the engaging portion is respectively disposed on each of the opposite side portions.

In a preferred embodiment of the accessory technology of the tray module, the engaging portion is a pin, and the engaging portion is an elongated notch having a curved bottom.

In a preferred embodiment of the above-mentioned tray module, the latch is a resilient piece and includes: a bottom portion fixed to the tray body; and a first bent portion bent from one end of the bottom portion a folding extension; an abutting portion connected to an end of the first bending portion away from the bottom; and a second bending portion extending from one end of the abutting portion; wherein, when the cover body is assembled, The second bending portion is configured to guide the abutting portion into the tray body, and the abutting portion is engaged with the tray body through a protrusion.

In a preferred embodiment of the above-described tray module, the cover body is provided with a bridge structure to define a depth to press down the bottom.

In a preferred embodiment of the accessory technology of the tray module, the bottom portion is further provided with an imprinting pattern for showing the pressing portion of the buckle and the sliding direction when the cover is removed.

In a preferred embodiment of the above-mentioned tray module, a protruding structure is disposed at a position where the tray body is assembled and fitted with the cover body for adjusting an assembly gap.

Compared with the prior art, the tray module provided by the present invention has the following beneficial effects: First, in the case where the installation space is limited, the present invention opens an opening through the first end surface and the second end surface of the tray module, so that the circuit The electronic components on the board can be directly connected to the external device through the opening, or the user can directly touch the electronic component, especially when the test operation is performed, the cover of the tray module is not required to be removed, which simplifies the testing process and can also be simplified. The invention prevents the circuit board in the tray module from being damaged. Secondly, the invention realizes the fixing of the handle and the tray body by means of pivoting the handle, and the operation is simple and comfortable, and the hand feel is comfortable; again, the invention realizes the cover body and the tray body through the elastic type lock The card is fixed and clamped at the same time, so that the tool-free installation is realized, and the assembly is simple and convenient.

The specific embodiments of the present invention will be further described by the following examples and drawings.

100‧‧‧Tray module

10‧‧‧Electronic devices

11‧‧‧ Backboard

110‧‧‧Tray body

111‧‧‧ first opening

112‧‧‧ second opening

113‧‧‧floor

114‧‧‧ side panels

115‧‧‧End cover

115a‧‧‧opening structure

116‧‧‧Clamping and Matching Department

117‧‧‧ convex structure

120‧‧‧ cover

121‧‧‧ Cover body

121a‧‧‧ first side

121b‧‧‧Clock Department

121c‧‧‧Bridge structure

122‧‧‧Lock

122a‧‧‧ bottom

122b‧‧‧First bend

122c‧‧‧Resistance

122d‧‧‧Second bend

122e‧‧‧4th convex

130‧‧‧ boards

131‧‧‧First electronic components

132‧‧‧Second electronic components

140‧‧‧handle

150‧‧‧Flexible locks

151‧‧‧ base

151a, 151b‧‧‧Fixed structure

152‧‧‧First elastic arm

152a‧‧‧Connecting Department

152b‧‧‧Operation Department

153‧‧‧Second elastic arm

154‧‧‧Extension

160‧‧‧First limit feature

170‧‧‧Second limit feature

181‧‧‧ first convex

182‧‧‧second convex body

183‧‧‧3rd convex body

190‧‧‧ Positioning structure

191‧‧‧Locating pin

192‧‧‧Positioning holes

B‧‧‧ arrow direction

The first figure is an exploded schematic view of a tray module in accordance with one embodiment of the present invention.

The second figure is a schematic view of the tray module shown in the first figure assembled in the locking position.

The third figure is a schematic diagram of the tray module shown in the first figure assembled in a free position.

The fourth figure is a partial schematic view of the tray module shown in the first figure, which is assembled and viewed when the handle is opened.

The fifth figure is a partial enlarged view of the tray module shown in Fig. 2 at A.

Figure 6 is a partial schematic view of the resilient lock member of the tray body in accordance with one embodiment of the present invention.

Figure 7 is a longitudinal cross-sectional view of the elastic lock member shown in Figure 6 on the tray body.

The eighth figure is a partial schematic view of a handle in accordance with one embodiment of the present invention.

The ninth drawing is a partial schematic view of a cover body in accordance with an embodiment of the present invention.

Figure 11 is a schematic view of an end face of a cover according to an embodiment of the present invention.

Figure 11 is a schematic view showing the engagement of the engaging portion with the engaging portion according to an embodiment of the present invention.

Figure 12 is a partial schematic view showing the locking of the cover body and the tray body in accordance with one embodiment of the present invention.

Figure 13 is a longitudinal cross-sectional view of the cover body shown in Figure 12 when it is locked with the tray body.

Figure 14 is a partial schematic view of a cover body in accordance with one embodiment of the present invention.

Figure 15 is a partial schematic side elevational view of the tray body in accordance with one embodiment of the present invention.

In order to make the objects, advantages and features of the present invention more apparent, the tray module proposed by the present invention will be further described in detail below with reference to the first to the fifteenth drawings. It should be noted that the drawings are all in a very simplified form and both use non-precise proportions, and are only for convenience and clarity to assist the purpose of the embodiments of the present invention.

The first figure is an exploded view of a tray module according to an embodiment of the present invention, and the second figure is a schematic view of the tray module shown in the first figure assembled in a locking position. Here, the present invention will describe the tray module 100 of the present invention in detail by taking an electronic device 10 as an example, such as a server. As shown in the first and second figures, the electronic device 10 includes a backboard 11 on which a connector (not shown) is disposed. The tray module 100 is adapted to be inserted and removed. The connector on the backplane 11 is electrically connected or disconnected to the backboard 11 through the connector, and the tray module 100 includes a tray body 110, a cover 120, and a circuit board 130. The cover body 120 is disposed on the tray body 110 and forms an accommodating space with the tray body 110. The circuit board 130 is received in the accommodating space and electrically connected to the backboard 11 for signal transmission. And the power supply, preferably, the circuit board 130 is a circuit board having a video processing service function; in particular, the tray module 100 has a first end surface and a second end surface, the first end surface (not shown) A first opening 111 is defined, and the second end surface (not shown) is provided with a second opening 112, and the first end surface is perpendicular to the second end surface.

The invention provides an opening through the first end surface and the second end surface of the tray module 100, so that the electronic components on the circuit board 130 can directly connect to the external device through the opening, or the user can directly touch the electronic component, especially When the test operation is performed, it is not necessary to remove the cover 120, which simplifies the test process and also prevents the circuit board 130 from being damaged.

Specifically, the electronic components on the circuit board 130 include a first electronic component 131 along the length of the circuit board 130 and a second electronic component 132 along the width direction. Of course, the electronic component may be disposed only in the length direction or the width direction. The present invention is not limited, and may be set according to actual needs. For example, the second electronic component 132 is located at the front end of the circuit board 130 to correspond to the second end surface, that is, to the end of the user, and the first electronic component 131 is located at the side end of the circuit board 130, that is, The first end face echoes. Specifically, the first electronic component 131 and the second electronic component 132 are, for example, an external interface, a button component, or a light indicator (ie, an indicator light); the key component is, for example, a power switch or the like; It is a power indicator light or the like; the external port can be connected to an external device; the external device can be a mobile device, a wire, or the like.

In this manner, after the circuit board 130 is loaded into the accommodating space, the first opening 111 corresponds to the assembled position of the first electronic component 131, so that the external device can connect the first electronic component 131 through the first opening 111. Alternatively, the user can directly touch the first electronic component 131, that is, the first electronic component 131 can be embedded in the first opening 111.

In this embodiment, the tray body 110 includes a bottom plate 113, two side plates 114 and an end cover 115 connected to each other. The bottom plate 113, the two side plates 11 and the end cover 115 enclose a loading space for accommodating the circuit board 130. Wherein, the end cap 115 is located at an end close to the user. The first opening 111 is disposed on the corresponding side plate 114 to correspond with the assembled position of the first electronic component 131.

If the first electronic component 131 is an electronic component such as a button component and a lamp number, preferably, the first electronic component 131 is embedded in the first opening 111 and protrudes a part for convenient observation and operation by the user. If the first electronic component 131 is an external interface, the first electronic component 131 can be embedded in the first opening 111, but does not protrude from the first opening 111, thus facilitating connection of an external device.

Similarly, after the circuit board 130 is loaded onto the tray body 110, the second opening 112 corresponds to the assembly position of the second electronic component 132, so that the external device can pass through the second opening 112. The second electronic component 132 is connected, or the user can directly touch the second electronic component 132, that is, the second electronic component 132 can be embedded in the second opening 112 and even protrude from the second opening 112. The second opening 112 is disposed on the end cover 115 to correspond to the assembled position of the second electronic component 132.

In the above, the first opening 111 and the second opening 112 are both open-cell structures. Preferably, the shape of the opening structure is adapted to the accommodating electronic component, and the size of the opening structure is not excessively large to ensure good EMI masking. Further, the number of the first opening 111 and the second opening 112 may be set according to the number of electronic components.

With continued reference to the first figure, the circuit board 130 has a gold finger (or a connector) at its rear end that can be electrically connected to the connector of the back board 11. Here, the "back end" is one end away from the user.

In order to load the tray module 100 into the electronic device 10 conveniently and quickly, the tray module 100 further includes a handle 140 and an elastic lock 150. The handle 140 is pivotally mounted on the tray body 110, for example, on the outer surface of the bottom plate 113, and is pivotable relative to the tray body 110 in a locking position (shown in the second figure) and a free position (shown At the same time, the elastic lock member 150 is correspondingly fixed on the tray body 110, for example, fixed on the inner surface of the bottom plate 113, and can lock the handle 140 on the tray body 110 (for example, on the end cover 115). .

Specifically, after the circuit board 130 is loaded into the accommodating space, the tray module 100 is further pushed into the electronic device 10, and the connector of the backboard 11 and the connector of the circuit board 130 are pre-connected. After the engagement, the user can pivot the handle 140 to push the tray module 100 to translate until the handle 140 pivots relative to the tray body 110 in the position of the second figure. At this time, the handle 140 pushes the circuit board 130 toward the back board 11 through the tray body 110 until the connector is electrically connected to the connector of the back board 11, and at the same time, the elastic lock 150 is automatically The handle 140 is locked to the tray body 110.

The fixing of the tray module 100 in the electronic device 10 is realized by the handle 140 and the elastic locking member 150, which is not only easy to operate but also has good comfort.

Preferably, the elastic lock 150 includes a base 151, a first elastic arm 152 and a second elastic arm 153. The base 151 is fixed on the tray body 110, and the first elastic arm 152 and the second elastic arm 153 are 153. One end of each of the elastic arms 152 is used to lock the handle 140 under the action of an elastic force, and the second elastic arm 153 is used to apply a spring force to the handle 140 when the handle 140 is opened. The handle 140 is opened at a certain angle, as shown in the fourth figure, to facilitate subsequent operations. Here, in the fourth figure, the state of the elastic lock 150 and the handle 140 in the tray module 100 is shown in a manner of omitting part of the structure, so that it is more intuitive to understand the installation manner of the two and the mutual positional relationship and the like. .

Continuing to refer to the fourth figure, the base 151 of the elastic lock 150 can be fixed to the bottom plate 113 through the two fixing structures 151a, 151b. Preferably, the two fixing structures 151a, 151b are all heat-melting columns.

With continued reference to the first figure, the first resilient arm 152 can include a connecting portion 152a and an operating portion 152b. The connecting portion 152a is a resilient arm that connects the base 151 to form a cantilever structure, correspondingly, the operating portion The 152b is disposed at the cantilever end of the connecting portion 152a, and can be used to force the connecting portion 152a to rotate to generate an elastic force, and the connecting portion 152a drives the operating portion 152b to engage with the handle 140 under the elastic force.

As shown in the fifth figure, preferably, the portion where the operating portion 152b is engaged with the handle 140 is provided with an inclination angle to make the engagement between the two more tight and effective.

With continued reference to the second figure, the operating portion 152b of the resilient lock member 150 is moved outwardly (i.e., away from the handle 140) to the extreme position in the direction of the arrow B to disengage the engagement. As shown in the sixth figure, preferably, the tray body 110 is provided with a first limiting feature 160, and the connecting portion 152a of the elastic locking member 150 is pivoted to the first limit by the operating portion 152b. Feature 160 stops, thus forming The extreme position. Specifically, the first limiting feature 160 is disposed on an inner surface of the bottom plate 113. Preferably, the first limiting feature 160 is a block-like convex structure.

Continuing to refer to the fourth figure, the tray body 110 is further provided with a second limiting feature 170 such that the handle 140 is opened to contact the second limiting feature 170 to stop, thereby defining a maximum angle at which the handle 140 is opened. The second limiting feature 170 of the embodiment is disposed on the outer surface of the bottom plate 113. Optionally, the second limiting feature 170 is a convex bridge with an outward convex structure.

Continuing to refer to the sixth figure, the tray body 110 is further provided with a first protrusion 181 and a second protrusion 182. The base 151 has an extension 154 at one end of the elastic arm (ie, the second elastic arm 153). The extending portion 154 is located between the first convex body 181 and the second convex body 182, so that the mounting position of the elastic lock member 150 can be accurately positioned. Preferably, the first protrusion 181 and the second protrusion 182 have the same structure. The first protrusion 181 and the second protrusion 182 of the embodiment are both disposed on the inner surface of the bottom plate 113 and protrude outward. Preferably, the first protrusion 181 and the second protrusion 182 are both hemispherical structures, and the bottoms of the two are disposed opposite to each other.

As shown in the seventh figure, and in conjunction with the sixth figure, a third protrusion 183 having an outwardly convex structure is disposed between the first protrusion 181 and the second protrusion 182, and the extension 154 is tight. The first elastic arm 152 and the second elastic arm 153 are in close contact with a first plane, so that the elastic lock 150 and the handle 140 fully function.

Continuing to refer to the second figure, and in conjunction with the first and third figures, the tray module 100 further includes a positioning structure 190 for restricting the handle 140 to the locking position to prevent the handle 140 from shaking. Preferably, the positioning structure 190 includes a positioning pin 191 and a positioning hole 192. The positioning pin 191 is disposed on the handle 140, as shown in the eighth figure. The positioning hole 192 is disposed on the end cover 115 of the tray body 110. Above, as shown in the first and third figures. As such, when the handle 140 is pivoted to the position of the second figure, the positioning pin 191 will be inserted into the positioning hole 192, thereby achieving the limit of the handle 140.

As shown in the ninth figure, the cover 120 includes a cover body 121 and a latch 122. The cover body 121 is coupled to the tray body 110, and the latch 122 is disposed on the cover body 121 for covering the cover. The body 121 is locked to the tray body 110. Preferably, the cover body 121 and the tray body 110 are coupled and coupled by means of a snap-fit manner, so that the tool is installed without tools, and the operation is simple, convenient and fast.

As shown in the tenth figure, the cover body 121 is preferably a convex-shaped structure having an open end, that is, the bottom of the convex-shaped structure is removed, thereby forming the cover body 121. At this time, at least one engaging portion 121b is respectively disposed on the opposite first side portions 121a of the cover body 121, as shown in the ninth figure. Preferably, the two engaging portions 121b are symmetrically disposed to facilitate the engaging operation, and the two opposite first side portions 121a are respectively provided with different numbers of engaging portions 121b to position the mounting direction of the cover 120. Prevent incorrect installation. For example, one of the first side portions 121a is provided with one engaging portion 121b, and the other first side portion 121a is provided with two engaging portions 121b. The front and rear positions of the engaging portions 121b on the different first side portions 121a may be staggered. In order to balance the force, it is ensured that the cover body 121 and the tray body 110 are effectively engaged. Preferably, the engaging portion 121b is an elongated notch having a curved bottom.

Correspondingly, as shown in the first to third figures, the two side plates 114 of the tray body 110 are provided with at least one engaging engagement portion 116 that cooperates with the engaging portion 121b. Preferably, the engaging portion 116 is a pin disposed on the inner surface of the two side plates 114 and is lockingly coupled to the engaging portion 121b, as shown in FIG. The eleventh diagram shows a state in which the engaging portion 121b is engaged with the engaging engagement portion 116.

Continuing to refer to the ninth embodiment, the latch 122 is preferably a resilient piece including a bottom portion 122a fixedly coupled to the inner surface of the cover body 121, a first bent portion 122b bent from one end of the bottom portion 122a, and connected to the first bend. The folding portion 122b is away from the abutting portion 122c at one end of the bottom portion 122a, and the second bent portion 122d bent from one end of the abutting portion 122c. Wherein, the abutting portion 122c is preferably The bottom portion 122a is parallel, the second bent portion 122d is bent and extended toward the bottom portion 122a, and the bending angles of the first bent portion 122b and the second bent portion 122d are both less than 90 degrees, and the abutting portion is A fourth protrusion 122e is disposed on the 122c.

In use, when the cover body 121 slides forward on the tray body 110 (ie, toward the front end of the tray body 110), the second bent portion 122d will guide the abutting portion 122c downward until two of the cover body 121 The side is engaged with the two sides of the tray body 110. At this time, the abutting portion 122c will rebound, so that the fourth protrusion 122e thereon is engaged with the end cover 115 of the tray body 110, as shown in the twelfth and the Figure 13 shows. Here, the end cover 115 is provided with an opening structure 115a that cooperates with the fourth protrusion 122e. When engaged, the fourth protrusion 122e is completely received in the opening structure 115a. Preferably, the fourth protrusion 122e has a guiding surface facing the end cover 115 and an engaging surface away from the end cover 115. The guiding surface is inclined outward so that the fourth protrusion 122e can smoothly enter. In the hole structure 115a, the engaging surface is a right-angled surface which is in clearance fit with the inner wall of the opening structure 115a.

Continuing to refer to the twelfth and thirteenth drawings, and referring to the ninth figure, when the cover 120 is removed, the fourth protrusion 122e can be disengaged from the opening structure 115a by pressing the bottom portion 122a of the buckle 122, and then, The lid body 121 is slid rearward until it is not slidable, and the lid body 120 can be taken up again. As shown in FIG. 14, the cover body 121 is provided with a bridge structure 121c. When assembled, the bridge structure 121c is located below the bottom portion 122a of the buckle 122 to limit the depth at which the bottom portion 122a is pressed downward. For example, the bridge structure 121c is an inwardly convex bridge.

Preferably, the bottom portion 122a of the buckle 122 is further provided with an imprinting pattern to show the pressed portion and the sliding direction when the cover 120 is removed. For example, the imprinting pattern includes a backward arrow and the text "Press".

As shown in the fifteenth figure, the two side plates 114 of the tray body 110 are respectively provided with a protruding structure 117, and the protruding structure 117 is disposed on a surface that cooperates with the cover body 120. Here, after the tray module 100 is assembled into the electronic device 10, the protruding structure 117 is used to adjust the cover. The purpose of assembling the gap between the body 120 and the tray body 110 is as follows. The height of the protruding structure 117 can be set according to actual needs, and the invention is not limited thereto.

In summary, the tray module of the present invention has the following advantages compared with the prior art: First, in the case where the installation space is limited today, the first end surface and the second end surface of the tray module of the present invention respectively have an opening. Therefore, the electronic components on the circuit board can be directly connected to the external device through the opening, or the user can directly touch the electronic component, especially when the test operation is performed, the cover of the tray module does not need to be removed, which simplifies the test. The process also prevents damage to the board inside the tray module.

Secondly, the invention realizes the fixing of the handle and the electronic device by means of pivoting the handle, and the operation is simple and the hand feel is comfortable.

Moreover, the present invention realizes that the cover body and the tray body are locked and fixed by the elastic type lock, and the pin shaft is used for clamping. Therefore, the tool-free installation is realized, and the cover body assembly is convenient and quick.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

100‧‧‧Tray module

110‧‧‧Tray body

111‧‧‧ first opening

112‧‧‧ second opening

114‧‧‧ side panels

115‧‧‧End cover

116‧‧‧Clamping and Matching Department

120‧‧‧ cover

140‧‧‧handle

150‧‧‧Flexible locks

190‧‧‧ Positioning structure

B‧‧‧ arrow direction

Claims (9)

A tray module, which is adapted to be inserted into a connector of a backplane, and electrically connected or disconnected to the backboard through the connector, the tray module comprising: a tray body; a cover body is disposed on the tray body and forms an accommodation space with the tray body, the cover body includes: a cover body connecting the tray body; and a latch disposed on the cover The main body is configured to lock the cover body to the tray body; and a circuit board is disposed in the accommodating space; wherein the tray module has a first end surface and a second end surface, The first end surface is provided with a first opening, the second end surface is provided with a second opening, the first end surface is perpendicular to the second end surface, and the cover body is a convex-shaped structure having an open end, the cover At least one engaging portion is disposed on each of the opposite side portions of the main body, and at least one engaging engaging portion that is engaged with the engaging portion is disposed on each of the opposite side portions of the tray body. The tray module of claim 1, wherein the first end surface of the tray module corresponds to one of an external connection of the circuit board, a button component, and a light. The tray module of claim 1, wherein the tray module further comprises: a handle is pivotally disposed on the tray body and pivoted relative to the tray body in one of a free position and a locking position; and an elastic locking member is fixed on the tray body; Wherein, when the handle is in the free position, the handle pushes the tray body toward the backboard, so that one of the circuit boards is electrically connected to the backboard The connector, while the elastic lock automatically locks the handle to the tray body; when the handle is in the locking position, the handle is disengaged from the elastic lock, and then rotated away The tray body is pulled outward to disengage the connector of the circuit board from the connector of the backplane. The tray module of claim 3, wherein the tray module further comprises: a positioning pin disposed on the handle; and a positioning hole disposed on the tray body; When the handle is pivoted to the locking position, the positioning pin is inserted into the positioning hole, thereby achieving the limitation of the handle. The tray module of claim 1, wherein the engaging portion is a pin, and the engaging portion is an elongated notch having a curved bottom. The tray module of claim 1 or 5, wherein the latch is a resilient piece and includes: a bottom portion fixed to the tray body; a first bending portion, One end of the bottom portion is bent and extended; an abutting portion is connected to one end of the first bending portion away from the bottom portion; and a second bending portion is bent and extended from one end of the abutting portion; Wherein, when the cover body is assembled, the second bending portion is configured to guide the abutting portion into the tray body, and the abutting portion is engaged with the tray body through a protrusion. The tray module of claim 6, wherein the cover body is provided with a bridge structure to define a depth to press down the bottom. The tray module of claim 6, wherein the bottom portion is further provided with an imprinting pattern for showing a pressing portion of the buckle and a sliding direction when the cover is removed. The tray module of claim 1, wherein the tray body is provided with a convex structure at a position where the cover body is assembled and matched for adjusting the assembly gap.