TWI541633B - Engaging device and electronic device - Google Patents

Description

Engagement device and electronic device

The present invention relates to a snap device and an electronic device to which the snap device is applied.

In recent years, many electronic devices, such as notebook computers, tablet computers, etc., have become more and more popular because of their advantages of being thin, short, and portable, and are favored by many consumers. In addition, in order to combine the advantages of the tablet and the notebook computer, many manufacturers have introduced a deformed tablet notebook that can selectively combine or detach the screen portion and the base. When the consumer detaches the screen portion, the screen portion can be used as a tablet alone. When the screen part is combined back to the base, it becomes a notebook computer again.

At present, the base having an external function is usually fixed to the tablet by a snap structure protruding from the appearance of the base. Therefore, when the base is not combined with the display screen, the engaging structure protruding from the appearance is easily damaged or deformed by an external collision.

One aspect of the present invention provides a snap device.

According to one or more embodiments of the present invention, the engaging device is adapted Removably coupled to a housing, the engagement surface of the housing having a first magnetic member. The engaging device comprises a fixing member, a rotating member, a moving member, a first elastic member and a engaging member. The rotating member includes a first pivot, a first snap portion, and a second magnetic member. The rotating member includes a first pivot, a first snap portion, and a second magnetic member. The rotating member is pivotally connected to the fixing member by the first pivot. When the second magnetic member is adjacent to the first magnetic member, a magnetic force generated between the first magnetic member and the second magnetic member causes the rotating member to rotate relative to the fixed member. The moving member movably connects the fixing member and the first fastening portion detachably snaps the moving member. The two ends of the first elastic member are respectively connected to the fixing member and the moving member. When the rotating member rotates and drives the first fastening portion away from the moving member, the first elastic member is released and generates a restoring force to move the moving member relative to the fixed member. The engaging member includes a second pivoting portion and a second locking portion, and the second pivoting portion and the second locking portion are respectively located on opposite sides of the engaging member, and the engaging member is pivotally connected to the fixing member by the second pivot. When the first elastic member is released and the moving member moves relative to the fixing member, the moving member pushes against the engaging member to rotate the engaging member and fasten to the housing with the second engaging portion.

One aspect of the present invention provides an electronic device.

According to one or more embodiments of the present invention, the electronic device includes a first housing, a second housing, and the above-described engaging device, wherein one side of the second housing is pivotally connected to the engaging device, and the first housing The engaging surface has at least one first magnetic member, and the engaging surface of the first housing is detachably coupled to the engaging device.

In summary, according to one or more embodiments of the present invention, the magnetic force between the first magnetic member of the first housing and the second magnetic member of the engaging device may be such that when the first housing is assembled to the engaging device The engaging member automatically snaps into the first housing. In this way, the mechanical loss of the engaging device can be reduced by the non-contact magnetic force to increase the service life of the engaging device.

10‧‧‧Electronic devices

100‧‧‧ engaging device

101‧‧‧ appearance

102‧‧‧ Cover

103‧‧‧ inner cover

103a‧‧‧ gap

104‧‧‧ bottom cover

107‧‧‧ Groove

110‧‧‧Cards

111‧‧‧Second buckle

112‧‧‧second pivot

113‧‧‧Ontology

114‧‧‧ convex

115‧‧‧First torsion spring

120‧‧‧Mobile parts

121‧‧‧Chute

122‧‧‧Lock attachment

123‧‧‧Pushing Department

125‧‧‧ buckle slot

126‧‧‧ card hook

130‧‧‧Rotating parts

132‧‧‧First pivot

134‧‧‧First buckle

135‧‧‧stop end

135a‧‧‧Guide

135b‧‧‧ stop surface

136‧‧‧Second magnetic parts

138‧‧‧second torsion spring

140‧‧‧Fixed parts

141‧‧‧ surface

150‧‧‧First elastic parts

160‧‧‧Switches

200‧‧‧ first housing

201‧‧‧ engaging surface

202‧‧‧ snap groove

203‧‧‧First magnetic parts

210‧‧‧ Display screen

300‧‧‧ second housing

Θ‧‧‧ angle

S‧‧‧ spacing

O‧‧‧ notch

L‧‧‧ center line

FIG. 1 is a schematic view showing a closed state of an electronic device according to an embodiment of the present invention.

2 is a schematic view showing the first housing and the engaging device separated according to an embodiment of the present invention, wherein the display screen faces the second housing.

Fig. 3 is a schematic view showing an engaging surface of a first casing according to an embodiment of the present invention.

Fig. 4 is an exploded view of the engaging device according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the first snap portion snap moving member of the rotary member according to the embodiment of the present invention.

Fig. 6 is a cross-sectional view showing the first hooking portion of the rotary member away from the moving member according to an embodiment of the present invention.

Fig. 7 is a cross-sectional view showing a convex portion of a pushing portion of a moving member according to Fig. 5, which is pushed against the engaging member, according to an embodiment of the present invention.

Figure 8 is a cross-sectional view showing the second buckle portion of the sixth embodiment being fastened to the housing according to an embodiment of the present invention.

Figure 9 is a cross-sectional view showing the sixth embodiment of the present invention and the moving member before being driven by the switch member.

Figure 10 is a cross-sectional view showing the moving member driven by the switch member according to an embodiment of the present invention.

Figure 11 is a cross-sectional view showing a movement path of the stop end of the rotary member away from the hook according to the fifth embodiment of the present invention.

Figure 12 is a schematic view showing the assembly of the first housing and the engaging device according to an embodiment of the present invention, wherein the screen is displayed facing away from the second housing.

The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

Please refer to FIG. 1 , which is a schematic diagram showing the closed state of the electronic device 10 according to an embodiment of the present invention. As shown, the electronic device 10 includes a latching device 100, a first housing 200, and a second housing 300. Taking the embodiment of FIG. 1 as an example, the first housing 200 can include a display screen (not shown), and the first housing 200 is detachably coupled to the engaging device 100. The second housing 300 can include a keyboard and/or a touch panel (not shown), and one side of the second housing 300 can be pivotally connected to the engaging device 100. Please refer to FIG. 2 , which is a schematic diagram of the first housing 200 separated from the engaging device 100 . As shown in FIG. 2, when the first housing 200 is detached from the engaging device 100, the first housing 200 can be used as a tablet computer. As shown in FIG. 1, when the first housing 200 is connected to the engaging device 100, the electronic device 10 is a notebook computer.

Please refer to FIG. 2 and FIG. 3 together, wherein FIG. 3 is a schematic view of the engaging surface 201 of the first housing 200. The engaging surface 201 of the first housing 200 is detachably disposed on the engaging device 100. More specifically, the engagement surface 201 sets the card The groove 202 and the first magnetic member 203. The engaging device 100 includes a latching member 110. The latching member 110 is detachably engaged with the engaging slot 202 of the engaging surface 201. FIG. 2 is a state in which the engaging member 110 is folded. That is, in the second figure, when the first casing 200 is detached from the engaging device 100, the engaging member 110 is not exposed to the design surface 101 of the engaging device 100, only when the design surface 101 is close to the first When the engaging surface 201 of the housing 200 is engaged, the engaging member 110 is exposed to the outside of the design surface 101 of the engaging device 100. At this time, the engaging member 110 is engaged with the engaging groove 202 of the engaging surface 201 to The snap device 100 is firmly coupled to the first housing 200.

In more detail, the first magnetic member 203 of the engaging surface 201 of the first housing 200 is used to drive the engaging member 110 to protrude outside the design surface 101 or to fit within the design surface 101. The design surface 101 has a recess 107 in which the engaging member 110 is received. The engaging member 110 may protrude outside the recess 107 or be received in the recess 107. In the embodiment of the present invention, the engaging member 110 is received in the recess 107 of the design surface 101 when the magnetic force of the first magnetic member 203 is not applied. That is to say, when the first housing 200 is not close to the engaging device 100, since the magnetic force of the first magnetic member 203 is not applied, the engaging member 110 is not exposed to the design surface 101. In this way, the collision of the engaging member 110 by the outside due to the exposure can be avoided. In addition, after the engaging member 110 is received in the recess 107, the appearance surface 101 can maintain its flatness, is simple and beautiful, and can avoid dust accumulation.

Next, the detailed structure of the engaging device 100 and the manner of actuation of the engaging member 110 will be further described in the following drawings and embodiments. First, please refer to FIG. 4, which is an exploded view of the engaging device 100. The engaging device 100 includes an outer cover 102, an inner cover 103, a bottom cover 104, a latching member 110, a moving member 120, and a rotating member 130, the fixing member 140 and the first elastic member 150. The rotating member 130 includes a first pivot 132, a first hook portion 134, and a second magnetic member 136. The rotating member 130 is pivotally connected to the fixing member 140 by the first pivot 132. The first hooking portion 134 of the rotating member 130 detachably snaps the moving member 120. The two ends of the first elastic member 150 are respectively connected to the fixing member 140 and the moving member 120. The engaging member 110 includes a second locking portion 111 and a second pivot 112. The engaging member 110 is pivotally connected to the fixing member 140 by the second pivot 112. The second locking portion 111 and the second pivot 112 are respectively located. The opposite side of the snap member 110. The outer cover 102, the inner cover 103 and the bottom cover 104 are used to cover the engaging member 110, the moving member 120, the rotating member 130, the fixing member 140 and the first elastic member 150. The inner cover 103 has a notch 103a, and the notch 103a The position corresponds to the position of the engaging member 110 for the second locking portion 111 of the engaging member 110 to pass through the notch 103a and to buckle the first housing 200.

Please refer to FIG. 5 and FIG. 6 , wherein FIG. 5 is a cross-sectional view of the first latching portion 134 of the rotating member 130 according to an embodiment of the present invention. FIG. 6 is an embodiment of the present invention. The first hooking portion 134 of the rotating member 130 rotates away from the cross-sectional view of the moving member 120. As shown, the second magnetic member 136 of the rotating member 130 is disposed between the first pivot 132 and the first latch portion 134. In this way, when the first magnetic member 203 is close to the second magnetic member 136, the magnetic force generated between the first magnetic member 203 and the second magnetic member 136 (in this embodiment, the magnetic force is a repulsive force), which can make the rotation The piece 130 is rotated counterclockwise by the first pivot 132 relative to the fixture 140. Therefore, the first catching portion 134 can be moved away from the moving member 120 (as shown in FIG. 6) by the state of the original snap moving member 120 (as shown in FIG. 5).

More specifically, please refer to Figures 4 to 6 together, moving parts The engaging member 110 is disposed on opposite sides of the fixing member 140, and the moving member 120 is movably coupled to the fixing member 140. As shown in FIG. 4, the moving member 120 has at least one chute 121 thereon. At least one lock attachment 122 is locked to the fixture 140 through the sliding slot 121 of the moving member 120, and the lock attachment 122 is formed to be limited to the design of the chute 121 such that the movable member 120 is movable relative to the fixed member 140. In the present embodiment, the moving member 120 includes a fastening groove 125. The first fastening portion 134 can be snapped to the fastening groove 125 to prevent the moving member 120 from moving relative to the fixing member 140. In contrast, when the first fastening portion 134 leaves the fastening groove 125 of the moving member 120, the moving member 120 can move relative to the fixing member 140. In the present embodiment, the fastening groove 125 can be a hole in the moving member 120, but the invention is not limited thereto.

In the present embodiment, the magnetic pole of the first magnetic member 203 is the same as the magnetic pole of the second magnetic member 136. When the first housing 200 approaches the engaging device 100, the first magnetic member 203 and the second magnetic member 136 are The repulsive force causes the second magnetic member 136 to be away from the first magnetic member 203, causing the rotating member 130 to rotate (as shown in FIGS. 5 to 6 as counterclockwise rotation), but the invention is not limited thereto. In other embodiments, generally, the knowledgeer should change the magnetic poles of the first magnetic member 203 and the magnetic poles of the second magnetic member 136 differently and face each other by the first magnetic member 203 and the second magnetic member. The suction between 136 causes the rotating member 130 to rotate.

It can be seen from the embodiment of FIG. 4 to FIG. 6 that when the first fastening portion 134 of the rotating member 130 is engaged with the fastening groove 125 of the moving member 120, the first elastic member 150 is stretched and deformed, wherein An elastic member 150 can be a tension spring. Then, when the second magnetic member 136 is subjected to the aforementioned repulsive force such that the rotating member 130 rotates counterclockwise and drives the first hooking portion 134 away from the engaging groove 125 of the moving member 120, the first elastic member 150 is released and generates a recovery. Force, causing the first elastic member 150 to drive The moving member 120 moves relative to the fixing member 140, and since the moving path of the lock attachment 122 is restricted by the shape of the chute 121, the moving member 120 does not have an offset situation during the movement.

Next, please refer to FIGS. 7 to 8 for a schematic cross-sectional view of the moving member 120 pushing the engaging member 110. When the first elastic member 150 in FIG. 5 is released to drive the moving member 120 to move away from the rotating member 130, the moving member 120 pushes against the engaging member 110, and the engaging member 110 rotates and the second buckle is used. The portion 111 snaps the first housing 200. More specifically, the engaging member 110 further includes a convex portion 114. The moving member 120 further includes a pushing portion 123. When the first elastic member 150 is released to drive the moving member 120 to move away from the rotating member 130, the moving member The pushing portion 123 of the 120 pushes against the convex portion 114 of the engaging member 110 and drives the engaging member 110 to rotate, so that the second locking portion 111 is engaged with the engaging groove 202 of the engaging surface 201 to be engaged. The device 100 is securely coupled to the first housing 200. In one embodiment, the convex portion 114 can be a protrusion protruding from the body 113 of the engaging member 110, and the pushing portion 123 can be a wall surface of the notch O on the moving member 120, but the invention is not limited thereto.

Next, please continue to refer to Figures 7 and 8. The engaging member 110 further includes a first torsion spring 115. The first torsion spring 115 is connected to the second pivot 112, and one end of the first torsion spring 115 is coupled to the engaging member 110, and the other end of the first torsion spring 115 is coupled to the fixing member 140. When the pushing portion 123 is pushed against the convex portion 114 to drive the engaging member 110 to rotate, the first torsion spring 115 is deformed. When the pushing portion 123 moves away from the convex portion 114 and the pushing portion 123 no longer pushes against the convex portion 114, the first torsion spring 115 is released and generates a restoring force to drive the engaging member 110 to be reset.

Returning to FIG. 4, the engaging device 100 further includes a switch member 160. The switch member 160 is coupled to the moving member 120. The switch member 160 can drive the moving member 120 relative to The fixture 140 moves. In more detail, when the first fastening portion 134 is disengaged from the moving member 120 such that the moving member 120 is moved by the pulling force of the first elastic member 150, the moving member 120 is returned to the original position (as shown in FIG. 5). The user can push the switch member 160 to move toward the rotating member 130 to further move the moving member 120 toward the rotating member 130.

Next, please refer to FIG. 9 and FIG. 10 , which are schematic diagrams of the moving member 120 before and after being driven by the switch member 160 . The moving member 120 further includes a hook 126. The rotating member 130 further includes a stop end 135. The stop end 135 of the rotating member 130 and the second magnetic member 136 of the rotating member 130 are respectively located on opposite sides of the first pivot 132. When the second fastening portion 111 of the engaging member 110 is fastened to the first housing 200, the switch member 160 is pushed toward the rotating member 130 to drive the moving member 120, so that the hook 126 can be fastened to the stopping end. 135.

More specifically, in FIG. 9 , the first hooking portion 134 of the rotating member 130 is separated from the engaging groove 125 of the moving member 120 such that the moving member 120 is moved away from the rotating member 130 by the restoring force of the first elastic member 150 . In the direction of the movement, the pushing portion 123 of the moving member 120 is pushed against the convex portion 114 of the engaging member 110, and the engaging member 110 is rotated, thereby engaging the second engaging portion 111 with the engaging surface 201. In the groove 202, the engaging device 100 and the first housing 200 are firmly connected together. At this time, the hook 126 is spaced apart from the stop end 135 by a distance S.

Next, in the process of Fig. 9 to Fig. 10, one side of the stopper end 135 is the guide surface 135a, and the stop end 135 is opposite to the other side of the stop surface 135b. The moving member 120 is driven by the switch member 160 to advance the hook 126 toward the stop end 135. Therefore, when the hook 126 approaches the stop end 135, it will first move along the guiding surface 135a, and then the hook 126 passes through the guiding surface 135a and is buckled. On the stop surface 135b. As a result, due to the magnetic force between the first magnetic member 203 and the second magnetic member 136, the hook 126 can be engaged with the stop end 135 by the restoring force of the first elastic member 150.

In addition, referring to FIG. 7 and FIG. 8 together, when the switch member 160 moves toward the rotating member 130, the switch member 160 drives the moving member 120 to move and the first elastic member 150 is stretched, and the moving member 120 is moved. The hook 126 is snapped on the stop end 135 and the pushing portion 123 is no longer pushed against the convex portion 114. At this time, the first torsion spring 115 of the engaging member 110 is released and generates a restoring force to rotate the engaging member 110 to be rotated, thereby driving the second latching portion 111 to be disengaged from the first housing 200, so that the user can self-card The merging device 100 is detached from the first housing 200.

Next, please refer to Fig. 2, Fig. 4, and Fig. 9 to Fig. 11 together. As shown, the rotating member 130 can further include a second torsion spring 138. The second torsion spring 138 is connected to the first pivot 132, and one end of the second torsion spring 138 is connected to the rotating member 130 and the other end is connected to the fixing member 140. When the first magnetic member 203 is close to the second magnetic member 136, the magnetic force between the first magnetic member 203 and the second magnetic member 136 causes the second torsion spring 138 to be deformed when the rotating member 130 rotates relative to the fixed member 140. Then, the switch member 160 is moved toward the rotating member 130, and the moving member 120 is moved until the hook 126 is buckled at the stop end 135. After the first housing 200 is detached from the engaging device 100, the first magnetic member 203 is away from the second magnetic member 136, so that the magnetic force between the first magnetic member 203 and the second magnetic member 136 disappears, so the second torsion spring 138 is released and generates a restoring force to rotate the rotating member 130 clockwise, the hook 126 originally buckled at the stopping end 135 is disengaged from the stopping end 135, and the first locking portion 134 of the rotating member 130 can be twisted by the second The restoring force of the spring 138 is rotated back to the original position, and at the same time, the moving member 120 is subjected to the restoring force of the first elastic member 150. Moving away from the direction of the rotating member 130, the first hooking portion 134 is thereby snapped to the engaging groove 125 of the moving member 120 (as shown in FIG. 5).

In summary, when the engaging surface 201 of the first housing 200 approaches the design surface 101 of the engaging device 100, a magnetic force is generated between the first magnetic member 203 and the second magnetic member 136 to drive the rotating member 130 against The hour hand rotates and deforms the second torsion spring 138, and the rotating member 130 drives the first fastening portion 134 away from the fastening groove 125 of the moving member 120, so that the first elastic member 150 is released to drive the moving member 120 to rotate away from the rotation. The direction of the member 130 is moved, and the pushing portion 123 of the moving member 120 is pushed against the convex portion 114 of the engaging member 110 to drive the engaging member 110 to rotate, so that the second engaging portion 111 protrudes outside the groove 107 and is exposed to the card. The design surface 101 of the device 100 is engaged with the engaging groove 202 of the engaging surface 201 to firmly connect the engaging device 100 and the first housing 200 together. As shown in FIG. 6, when the second fastening portion 111 is rotated up relative to the fixing member 140, the angle θ between the second fastening portion 111 and the surface 141 of the fixing member 140 is approximately equal to 90 degrees. Therefore, in this embodiment, the first housing 200 can be connected to the second housing 300 through the engaging device 100 without being manually (for example, manually). In addition, in the present embodiment, the engagement device 100 is engaged with the first housing 200 by magnetic force, and the mechanical wear rate of the engagement device 100 can be reduced for a long period of time, and the service life of the engagement device 100 can be improved.

Then, when the switch member 160 is pushed toward the rotating member 130, the switch member 160 drives the moving member 120, and the first elastic member 150 is stretched, and the moving member 120 moves with the switch member 160 until the hook 126 is engaged. At the stop end 135, the pushing portion 123 is no longer pushed against the convex portion 114, the first torsion spring 115 of the engaging member 110 is released and generates a restoring force, and the engaging member 110 is rotated and reset, thereby driving the second card. The buckle portion 111 is separated from the first housing 200, so the user can self-card The merging device 100 is detached from the first housing 200.

In other embodiments, please refer to FIG. 2, FIG. 3 and FIG. 12, wherein FIG. 12 is an assembled view of the first housing 200 and the engaging device 100, wherein the display screen 210 faces away from the second housing 300. . In some embodiments, the number of the first magnetic members 203 of the first housing 200 may be plural. For example, FIG. 3 illustrates two first magnetic members 203, and the two first magnetic members 203 are symmetrically located on opposite sides of the center line L of the engaging surface 201. As such, as shown in FIGS. 2, 3, and 12, the first housing 200 faces the second housing 300 or the second housing 300, the card of the first housing 200. At least one of the first magnetic members 203 on the facing 201 can interact with the second magnetic member 136 in the engaging device 100 such that the first housing 200 is assembled to the engaging device 100. As shown in FIG. 12, when the display screen 210 faces away from the second housing 300, the second housing 300 can serve as a support for the first housing 200 to facilitate the user to view the display screen 210 of the first housing 200. .

In summary, the embodiment of the present invention uses a non-contact magnetic force as a trigger mechanism for whether or not the engaging member of the engaging device is exposed. When the first housing is close to the engaging device, the magnetic component between the first magnetic member of the first housing and the second magnetic member of the rotating member drives the subsequent rotating member and the moving member to enable the engaging member Snap in the first housing. When the first housing is away from the engaging device, the engaging member can be engaged in the design surface of the engaging device to maintain the flatness of the design surface of the engaging device. In addition, in the embodiment of the present invention, the engaging device is engaged with the first casing by magnetic force, and the mechanical wear rate of the engaging device can be reduced for a long time, and the service life of the engaging device is greatly improved.

100‧‧‧ engaging device

102‧‧‧ Cover

103‧‧‧ inner cover

103a‧‧‧ gap

104‧‧‧ bottom cover

110‧‧‧Cards

111‧‧‧Second buckle

112‧‧‧second pivot

113‧‧‧Ontology

114‧‧‧ convex

115‧‧‧First torsion spring

120‧‧‧Mobile parts

121‧‧‧Chute

122‧‧‧Lock attachment

123‧‧‧Pushing Department

125‧‧‧ buckle slot

126‧‧‧ card hook

130‧‧‧Rotating parts

132‧‧‧First pivot

134‧‧‧First buckle

135‧‧‧stop end

136‧‧‧Second magnetic parts

138‧‧‧second torsion spring

140‧‧‧Fixed parts

141‧‧‧ surface

150‧‧‧First elastic parts

160‧‧‧Switches

Claims (9)

An engaging device is adapted to be detachably coupled to a housing, the housing comprising a first magnetic member, the engaging device comprising: a fixing member; a rotating member comprising a first pivot, a first a latching portion and a second magnetic member, the rotating member pivotally connecting the fixing member by the first pivoting member, the first magnetic member and the second magnetic member when the second magnetic member is adjacent to the first magnetic member a magnetic force generated between the members, the rotating member is rotated relative to the fixing member; a moving member movably connecting the fixing member, and the first fastening portion detachably snaps the moving member; a first elasticity The two ends of the first elastic member are respectively connected to the fixing member and the moving member. When the rotating member rotates and drives the first fastening portion away from the moving member, the first elastic member is released and generates a The restoring force drives the moving member to move relative to the fixing member; and a latching member includes a second pivoting portion and a second latching portion respectively located on opposite sides of the engaging member, wherein the engaging member is configured by the first Two pivots pivotally connect the fixing member, when the first elastic member is released and drives the movement When the moving member relative to the stationary member, the movable member pushes the engaging member so that the engaging member to rotate and the second engaging portion engaged with the housing. The engaging device of claim 1, wherein the engaging member further comprises a convex portion, wherein the moving member further comprises a pushing portion, the pushing portion of the moving member being capable of pushing against the engaging member The convex portion drives the engaging member to rotate, so that the second fastening portion is fastened to the housing. The engaging device of claim 1, wherein the engaging member further comprises: a first torsion spring connected to the second pivot, and when the pushing portion is pushed against the convex portion, the first The torsion spring is deformed, and when the pushing portion moves away from the convex portion, the first torsion spring is released and generates a restoring force to drive the engaging member to be reset. The engaging device of claim 3, further comprising a switch member, the switch member connecting the moving member, the moving member further comprising a hook, the rotating member further comprising a stop end, the stop end and the stop end The second magnetic members are respectively located on opposite sides of the first pivoting portion. When the second fastening portion is fastened to the housing, the switch member is pushed to move in the direction of the rotating member and the moving member is driven to make the card The hook is fastened to the stop end. The engaging device according to claim 4, when the switch member moves in the direction of the rotating member, the moving member is driven to move, the first torsion spring is released and generates a restoring force, and the engaging member is rotated and reset. And disengaging the second fastening portion from the housing. The engaging device of claim 4, wherein the rotating member further comprises a second torsion spring coupled to the first pivoting member, wherein the second magnetic member is adjacent to the first magnetic member, and the first The magnetic force generated between the magnetic member and the second magnetic member causes the second torsion spring to deform when the rotating member rotates relative to the fixing member, and when the second magnetic member is away from the first magnetic member, the first The two torsion springs are released and generate a restoring force, which drives the rotating member to rotate and reset, and further The hook is released from the stop end, and the first buckle portion snaps the moving member. The engaging device of claim 1, comprising: a design surface adapted to be in contact with the housing, the appearance mask having a recess, the engaging member being received in the recess, when When the second fastening portion of the engaging member is lifted relative to the fixing member, the second fastening portion protrudes outside the groove. An electronic device comprising: a first housing having an engaging surface, the engaging surface being provided with at least one first magnetic member; a second housing; and a latching device pivotally connected to the second housing One side of the body, the engaging surface of the first casing is detachably connected to the engaging device, the engaging device comprises: a fixing member; a rotating member comprising a first pivot and a first buckle And a second magnetic member, the rotating member is pivotally connected to the fixing member by the first pivoting member, and when the second magnetic member is adjacent to the first magnetic member, the first magnetic member and the second magnetic member a magnetic force generated between the rotating member and the rotating member; a moving member, the first fastening portion detachably snaps the moving member; a first elastic member, the two ends of the first elastic member respectively Attached to the fixing member and the moving member, when the rotating member rotates and drives the first fastening portion away from the moving member, the first elastic member is released and generates a restoring force to move the moving member relative to the fixing member And a snap member comprising a second pivot and a second snap portion Not being located on the opposite side of the engaging member, the engaging member is pivotally connected to the fixing member by the second pivoting portion, and when the first elastic member is released and the moving member is moved relative to the fixing member, the moving member The engaging member is pushed to rotate the engaging member and is fastened to the first casing by the second fastening portion. The electronic device of claim 8, wherein the number of the at least one first magnetic member is two, and the two first magnetic members are symmetrically located on opposite sides of a center line of the engaging surface.