Latch assembly

Abstract

The invention discloses a latch assembly used for a first object and a second object to make contact with each other. The latch assembly includes: a first frame mounted to a first article; the second frame is arranged to be close to the first frame in an operable mode so that the second object can abut against the first object; a plurality of clamps respectively connected to the second frame; a plurality of first springs respectively connected to the clamps and biasing the clamps and the second frame away from each other; a handle connected to the clamp and operable to approach the clamp to the first frame; and at least one linkage member connected to the handle such that the handle synchronously operates each clamp.

Description

Technical Field

[0001] The present invention relates to a latch assembly. Background Art

[0002] Modern large-scale integrated circuits, microprocessors, microchips and other circuit boards generate a lot of heat, especially when running at high frequencies. Heat sinks are usually installed on these circuit boards to dissipate as much heat as possible. It is hoped that the heat sink is in as close contact with the circuit board as possible to increase the heat dissipation efficiency, so the clamping force is provided by the latch assembly.

[0003] A common problem faced in such applications is that the circuit board may have a large area and the heat sink may also have a correspondingly large area. The latch assembly may generate uneven clamping force at various locations on the heat sink, resulting in reduced heat dissipation efficiency or even damage to the circuit board. On the other hand, in the case where the clamping force is generated by a lever or cam device, since the lever and cam include rotating parts, their operation may generate undesirable forces in the perpendicular direction of the clamping direction, i.e., lateral forces and / or longitudinal forces. Such lateral forces are disadvantageous because they may cause relative friction and displacement between the heat sink and the circuit board.

[0004] Therefore, it is desirable to provide a latch assembly that can generate uniform compression force and avoid applying lateral and / or longitudinal forces to the heat sink. Summary of the invention

[0005] The present application discloses a latch assembly for contacting a first object and a second object with each other. The latch assembly comprises: a first frame mounted to the first object; a second frame arranged to be operable to be close to the first frame so that the second object abuts against the first object; a plurality of clamps respectively connected to the second frame; a plurality of first springs respectively connected to the clamps and biasing the clamps and the second frame away from each other; a handle connected to the clamps and operable to make the clamps close to the first frame; and at least one linkage connected to the handle so that the handle synchronously operates each of the clamps.

[0006] In one embodiment, the handle comprises a connecting arm and at least one foot extending from the connecting arm, each of the feet being respectively connected to a linkage to synchronously operate at least one of the clamps.

[0007] In one embodiment, the handle rotates around a transverse axis, the feet are arranged in a transverse direction and are respectively connected to the linkages extending in a longitudinal direction, and the clamp abuts against the second frame in a vertical direction.

[0008] In one embodiment, each of the feet includes: a first segment extending from the connecting arm; a second segment extending in a bent manner from the first segment; and a third segment extending in a bent manner from the second segment; wherein the second segment is pivotally connected to the linkage and the third segment is connected to the clamp via a lever.

[0009] In one embodiment, the third section is substantially parallel to the first section, and a plurality of second handle holes are formed on the third section for fixed connection to the lever.

[0010] In one embodiment, the latch assembly further comprises a plurality of levers, each of the levers being respectively connected to the clamp to drive the clamp; and the handle being directly connected to at least one of the levers and being connected to the other levers through the linkage to synchronously operate the plurality of levers.

[0011] In one embodiment, said handle is formed integrally with at least one of said levers.

[0012] In one embodiment, each of the linkages forms a four-bar linkage structure with the second frame through two of the levers, and the handle operates one of the levers in the four-bar linkage structure.

[0013] In one embodiment, the lever includes: a panel in an L shape; and a first pivot portion and a second pivot portion, respectively arranged at two ends of the panel; wherein the first pivot portion is pivotally connected to the linkage member, and the second pivot portion is pivotally connected to the clamp.

[0014] In one embodiment, the first pivot portion and the second pivot portion are pivot holes, respectively; and the latch assembly further comprises a first pin and a second pin, which respectively pass through the first pivot portion and the second pivot portion to pivotally connect the lever to the linkage and the clamp.

[0015] In one embodiment, the lever further comprises at least one lever post rising from the panel to fixedly connect the lever to the handle.

[0016] In one embodiment, the linkage is disposed laterally between the handle and the lever.

[0017] In one embodiment, the lever further includes a cam surface; the latch assembly further includes a hook, the hook being movably connected to the clamp and having a cam surface engaging with the cam surface, the hook having an engagement portion configured to engage the first object; and wherein rotation of the handle causes: rotation of the hook, which causes the engagement portion to engage with the first object; and subsequent movement of the cam surface along the cam surface of the hook, which causes the clamp to translate toward the first object against the bias of the first spring, causing the second object to contact the first object.

[0018] In one embodiment, the engagement portion is a hook.

[0019] In one embodiment, due to the bias of the first spring, movement of the cam surface along the cam surface of the hook beyond the top dead center position causes the clamp to translate away from the first object until the latch assembly reaches a closed state, and in the closed state, the bias of the spring restricts the handle from accidentally rotating in the opposite direction and leaving the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, embodiments of the present application will be described in further detail with reference to the accompanying drawings, in which:

[0021] Figures 1A to 1F They are respectively a front view, a rear view, a left view, a right view, a top view, and a bottom view of the latch assembly according to the present application;

[0022] Figure 1G to Figure 1J They are three-dimensional views of the latch assembly at different angles;

[0023] Figure 2 is an exploded perspective view of the latch assembly;

[0024] Figure 3 and Figure 4 They are three-dimensional views of the clamp of the latch assembly at different angles;

[0025] Figure 5A and Figure 5B are three-dimensional views of the hook of the latch assembly at different angles;

[0026] Fig. 6A and 6B are three-dimensional views of a lever of the latch assembly at different angles;

[0027] Figure 7 is a perspective view of a handle of the latch assembly;

[0028] Figure 8 and Fig. 9 They are three-dimensional views of the first frame of the latch assembly at different angles;

[0029] Fig.10 is a perspective view of a second frame of the latch assembly;

[0030] Fig.11 is a perspective view of a linkage of the latch assembly;

[0031] Fig. 12A is a perspective view of the latch assembly in an open state;

[0032] Fig. 12B is a perspective view of the latch assembly in an open state, showing a first object and a second object;

[0033] Fig. 12C is a top view of the latch assembly in an open state;

[0034] Fig.12D and Fig.12E Along Fig. 12C The cross-sectional view taken along the AA and BB lines in FIG.

[0035] Fig.13A is a perspective view of the latch assembly between an open state and a closed state;

[0036] Fig. 13B is a perspective view of the latch assembly between an open state and a closed state, showing a first object and a second object;

[0037] Fig. 13C is a top view of the latch assembly between an open state and a closed state;

[0038] Fig.13D and Fig.13E Along Fig. 13C The cross-sectional view taken along the CC and DD lines in FIG.

[0039] Fig.14A is a perspective view of the latch assembly in a closed state;

[0040] Fig. 14B is a perspective view of the latch assembly in a closed state, showing a first object and a second object;

[0041] Fig. 14C is a top view of the latch assembly in a closed state;

[0042] Fig.14D and Fig.14E Along Fig. 14C Cross-sectional view taken along line EE and line FF.

[0043] List of reference numerals:

[0044] Latch assembly 100

[0045] Fixture 20

[0046] Rectangular Panel 22

[0047] Upper surface 22a

[0048] Lower surface 22b

[0049] Extension 24

[0050] Connecting part 30

[0051] Protrusion 32

[0052] Tongue 34

[0053] Tongue hole 36

[0054] Slot 37

[0055] First curved track 37a

[0056] Second vertical track 37b

[0057] Wall 38

[0058] Hook 50

[0059] Front 52

[0060] Back 54

[0061] Top 56

[0062] Bottom 58

[0063] Joint portion 60

[0064] Protrusion 62

[0065] Side 63

[0066] Cam surface 66

[0067] Curved section 66a

[0068] Straight section 66b

[0069] Curved section 66c

[0070] Slot 68

[0071] Hook column 70

[0072] Leverage 72

[0073] Panel 74

[0074] The first pivoting portion 74a

[0075] The second pivoting portion 74b

[0076] Front 76

[0077] Back 78

[0078] Cam 80

[0079] Lever columns 82, 84

[0080] First Pin 86

[0081] Second Pin 88

[0082] Handle 90

[0083] Connecting arm 91

[0084] Foot 92

[0085] First section 92a

[0086] Second section 92b

[0087] The third section 92c

[0088] First handle hole 94

[0089] Second handle holes 95, 96

[0090] First spring 120

[0091] Second spring 125

[0092] First frame 130

[0093] Frame column 131

[0094] Top 131a

[0095] Joint structure 132

[0096] Hollow part 133

[0097] Mounting section 134

[0098] Second frame 140

[0099] Frame hole 141

[0100] Clamp mounting hole 142

[0101] Accommodation space 143

[0102] Linkage 160

[0103] Linkage hole 161

[0104] Give way 162

[0105] Rib 163

[0106] Gasket 170

[0107] First object 200

[0108] Heating part 210

[0109] Second object 300 DETAILED DESCRIPTION

[0110] While the invention is illustrated and described herein with reference to particular embodiments, the invention should not be limited to the details shown, rather various modifications may be made to the details within the range and scope of equivalents of the claims and without departing from the invention.

[0111] Reference Figure 1A to Figure 2 The latch assembly 100 according to the present application is generally described as follows: The latch assembly 100 includes a first frame 130 , a second frame 140 , a plurality of clamps 20 , a plurality of first springs 120 , a handle 90 , and at least one linkage 160 .

[0112] The first frame 130 is mounted to a first object 200 such as a circuit board, and the second frame 140 is opposite to the first frame 130 and is arranged to be operatively close to the first frame 130 so that a second object 300 such as a heat sink abuts against the first object 200. The first object 200 and the second object 300 are shown in FIG. Fig. 12B , Fig. 13B , Fig. 14B In some embodiments, the first object 200 has a heat generating portion 210, such as a CPU or a GPU. The heat generating portion 210 passes through the first frame 130 and contacts the second object 300. In other embodiments, the second object 300 may also extend into the first frame 130 or pass through the first frame 130 to contact the heat generating portion 210 of the first object 200. The second frame 140 is configured to accommodate the second object 300 or to be fixed to the second object 300. In this way, when the second frame 140 is operated to approach the first frame 130, it can drive the second object 300 to abut against the first object 200.

[0113] The plurality of clamps 20 are respectively connected to the second frame 140. The plurality of first springs 120 are respectively connected to the clamps 20, more specifically, are disposed between each clamp 20 and the second frame 140, and bias the clamps 20 and the second frame 140 to be away from each other.

[0114] The handle 90 is connected to the clamp 20 and can be operated to bring the clamp 20 close to the first frame 130. The linkage 160 is connected to the handle 90 so that the handle 90 synchronously operates the clamp 20. In this embodiment, four clamps 20 are respectively arranged at the four corners of the second frame 140. Two linkages 160 are arranged in the transverse direction and are respectively connected to the two feet 92 of the handle 90, and each linkage 160 is respectively connected to the two clamps 20 through two levers 72 to synchronize the movement of the two clamps 20. The two feet 92 of the handle 90 are symmetrically arranged in the transverse direction, and the plurality of clamps 20 are also symmetrically distributed in the transverse direction. In this way, when the handle 90 rotates around the transverse axis, its two feet 92 synchronously drive the two linkages 160, and the two linkages 160 then synchronously drive the four clamps 20, so that the four corners of the second frame 140 are synchronously and evenly pressed down, so that the second object 300 is subjected to uniform pressure. In this way, it is possible to prevent the second object 300 from being subjected to uneven pressure and causing poor contact with the first object 200 or even damage.

[0115] In other embodiments, the number and position of the foot 92 of the handle 90, the linkage 160, and the clamp 20 may be changed accordingly according to actual needs and the shapes of the first object 200 and the second object 300. For example, the handle 90 may have only one foot 92 or more than two feet 92, the number of linkages 160 may be changed according to the number of feet 92, and each linkage 160 may be connected to more than two clamps 20.

[0116] The latch assembly 100 of the present application also includes a transmission structure composed of a hook 50 and a lever 72. Each clamp 20 is connected to one of the transmission structures to convert the rotation of the handle 90 and / or the longitudinal movement of the linkage 160 into the vertical movement of the clamp 20. The transmission of the present application can be advantageously suitable for the handle 90, linkage 160, and clamp 20 of the present application, thereby reducing the number of components and providing transmission and self-locking functions at the same time, which will be described in detail below. However, it should be understood that different transmission structures, such as connecting rods or chains, etc., can also be used in other embodiments to enable the handle 90 to synchronously operate multiple clamps 20.

[0117] Reference Figure 3 and Figure 4 The specific structure of the jig 20 is described.

[0118] The fixture 20 can be a whole, which can be composed of metal and / or plastic and formed by a molding process, for example. The fixture 20 includes a panel 22 in a rectangular shape, which extends roughly along longitudinal and transverse planes. The panel 22 has an upper surface 22a and a lower surface 22b opposite to the upper surface 22a. Two cylindrical extensions 24 extend downward from opposite ends of the lower surface 22b. Each extension 24 includes a connecting portion 30 at the bottom end. The diameter of each connecting portion 30 is smaller than the diameter of the extension 24, but this is not necessary. The arc protrusion 32 extends above the upper surface 22a.

[0119] A square tongue 34 extends downwardly and vertically from the lower surface 22b of the panel 22. The tongue 34 is positioned between the two extensions 24. The tongue 34 includes a tongue hole 36 extending transversely. The tongue hole 36 extends through the thickness of the tongue 34. The tongue 34 includes a V-shaped groove 37 extending transversely, which is also above the tongue hole 36 and is defined at or near the intersection of the tongue 34 and the panel 22. The V-shaped groove 37 includes a first curved track 37a and a second vertical track 37b interconnected with each other. The wall 38 is located at the edge of one side of the tongue 34 (i.e., the side facing the hook 50).

[0120] Reference Figure 5A and Figure 5B The specific structure of the hook 50 is described.

[0121] Each hook 50 may be a unitary body, which may be composed of metal and / or plastic and formed by a molding process, for example.

[0122] The hook 50 is a sheet-like "g" shape having a front face 52, a rear face 54, a top face 56, a bottom face 58, and side faces 63. A hook-shaped engaging portion 60 is defined at the bottom end of the hook 50. The shape of the engaging portion 60 may vary. The bottom end of the engaging portion 60 includes the bottom face 58. A curved protrusion 62 extends vertically from the top end of the front face 52 of the hook 50. The top end of the curved protrusion 62 includes the top face 56 of the hook 50.

[0123] The curved surface 66 of the protrusion 62 is opposite to the top surface 56. The curved surface 66 includes a curved section 66a, a straight section 66b, and a curved section 66c. The curved surface 66 may be considered a cam surface and may be referred to herein as a cam surface.

[0124] The slot 68 is defined at the approximate center of the hook 50. A hook post 70 extends from the top end of the rear face 54 of the hook 50. The hook post 70 is also defined above the slot 68.

[0125] Reference FIG. 6A to FIG. 6B The specific structure of the lever 72 is described.

[0126] The lever 72 is a whole body, which can be composed of metal and / or plastic and formed by a molding process, for example. As mentioned above, at least one lever 72 of the plurality of levers 72 can be formed as one body with the handle 90 .

[0127] The lever 72 includes an L-shaped panel 74 including a front face 76 and a rear face 78. A first pivoting portion 74a and a second pivoting portion 74b are formed at both ends of the panel 74, respectively. In the present embodiment, the first pivoting portion 74a and the second pivoting portion 74b may be in the form of holes penetrating the panel 74, respectively, but in other embodiments, the first pivoting portion 74a and the second pivoting portion 74b may also be in the form of columns extending vertically along the panel 74. A cam 80 in the form of a circular surface is defined at one end of the panel 74. At least one lever column 82, 84 extends from the front face 76 of the panel 74. As will be described in detail below, the cam 80 abuts against the cam surface 66 of the hook 50 and rotates and slides along the cam surface 66. The function of the lever 72 is to amplify the abutting force of the cam 80 against the cam surface 66 to allow the user to apply less force to drive the lever 72 and the cam 80 through the handle 90.

[0128] Reference Figure 7 The specific structure of the handle 90 is described.

[0129] The handle 90 is configured to be grasped and rotated by a user. The handle 90 may be a whole body, which may be composed of metal and / or plastic, for example, and formed by a bending process or a molding process. The handle 90 is a U-shaped body, including a connecting arm 91 and two feet 92 extending from the connecting arm 91. A first handle hole 94 and at least one second handle hole 95, 96 are provided on each foot 92. The first handle hole 94 and the second handle hole 95, 96 penetrate the foot 92 of the handle 90 respectively, and the first handle hole 95, 96 is closer to the end of the foot 92.

[0130] More specifically, each foot 92 may include a first segment 92a, a second segment 92b, and a third segment 92c. The first segment 92a extends from the connecting arm 91, the second segment 92b extends from the first segment 92a in a bending manner, and the third segment 92c extends from the second segment 92c in a bending manner. The second segment 92b is pivotally connected to the linkage 160, and the third segment 92c is connected to the clamp 20 through the lever 72.

[0131] More specifically, the third section 92c is substantially parallel to the first section 92a. For example, the first section 92a, the second section 92b, and the third section 92c continuously form a "Z" configuration. The first handle hole 94 is provided in the second section 92b, and the second handle holes 95 and 96 are provided in the third section 92c. Due to the "Z" configuration of the foot 92 of the handle 90, when the handle 90 is in FIG. 14A to FIG. 14EIn the closed state shown, the connecting arm 91 of the handle 90 can be located above the second frame 140 to avoid interference with the second frame 140. In other embodiments, the foot 92 can also be set to be straight. In this case, when the handle 90 is in the closed state, the two feet 92 are respectively located on the lateral sides of the second frame 140, and the connecting arm 91 is located on the longitudinal front side of the second frame 140. In this way, the total height of the latch assembly 100 in the closed state can be reduced.

[0132] Reference Figure 8 The specific structure of the first frame 130 is described.

[0133] The first frame 130 is a square hollow frame that extends approximately in longitudinal and transverse planes. The shape of the first frame 130 can be changed according to the first object 200, for example, approximately corresponding to the size of the first object 200. A plurality of frame columns 131 extend upward from the upper surface of the first frame 130, for example, from the transverse edges of the first frame 130. The frame columns 131 can be elongated and have a tapered top 131a. The top 131a can have an enlarged diameter to fit onto the upper surface of the second frame 140 and prevent the second frame 130 from being separated from the first frame (see Fig.12D In other embodiments, other retaining mechanisms such as snap rings or rivets may be provided between the first frame 130 and the second frame 140 to replace the top 131a of the frame column 131. Alternatively, no retaining mechanism is provided between the first frame 130 and the second frame 140, and the first frame 130 is prevented from being separated from the second frame 140 by gravity alone.

[0134] In addition, although the second object 300 is sandwiched between the first frame 130 and the second frame 140, it should be understood that the latch assembly 100 according to the present application can be assembled as a complete assembly between the first object 200 and the second object 300. Specifically, the first frame 130 and the second frame 140 can be assembled together at the factory. When in use, the first frame 130 is fixed to the first object 200, and the second object 300 is inserted between the first frame 130 and the second frame 140 in the horizontal or vertical direction. In this way, the on-site assembly of the latch assembly 100 is avoided, and the skill requirements for the end user are reduced.

[0135] A plurality of engagement structures 132 rise from the upper surface of the first frame 130 and extend at their respective top ends toward the middle of the first frame 130. The middle of the first frame 130 is a hollow portion 133, which allows the first object 200 to pass through the first frame 130 and contact the second object 300, and also allows the second object 300 to pass through the first frame 130 and contact the first object 200. The first frame 130 may also be provided with a plurality of mounting portions 134 such as screw holes at the edge thereof for mounting to the first object 200.

[0136] Reference Fig. 9 and Fig.10 The specific structure of the second frame 140 is described.

[0137] The second frame 140 is in the shape of a square plate, which extends approximately in the longitudinal and transverse planes. The size of the first frame 140 may approximately correspond to the size of the first frame 130. A plurality of frame holes 141 vertically penetrate the second frame 140, for example, are arranged at the transverse edges of the second frame 140. The positions of the frame holes 141 may correspond to the positions of the frame columns 131, respectively. A plurality of clamp mounting holes 142 vertically penetrate the second frame 140, for example, are arranged at the transverse edges of the second frame 140. The number and position of the clamp mounting holes 142 may be changed according to the number and position of the clamps 20.

[0138] The bottom surface of the second frame 140 is recessed upward to form a receiving portion 143. The receiving portion 143 penetrates the second frame 140 in the longitudinal direction, for example.

[0139] Reference Fig.11 The specific structure of the linkage 160 is described.

[0140] The linkage member 160 is in the shape of an integral plate, which extends in the longitudinal direction and has linkage holes 161 at both ends of the longitudinal direction. Two clearance portions 162 are respectively formed at the bottom edge of the linkage member 160 and are recessed upward. When the latch assembly 100 is in the closed state, the clearance portions 162 prevent the linkage member 160 and the lever 72 from interfering with each other (see Fig.14D The top edge of the linkage member 160 is bent in the transverse direction to form a rib 163 to increase the strength of the linkage member 160 .

[0141] Back to Figure 2 The assembly relationship of the various components of the latch assembly 100 is described.

[0142] The first frame 130 and the second frame 140 are arranged opposite to each other, specifically, the second frame 140 is located above the first frame 130, so that the frame columns 131 of the first frame 130 are respectively inserted into the frame holes 141 of the second frame 140. A second spring 125 is sleeved on each frame column 131, and biases the first frame 130 and the second frame 140 to be away from each other.

[0143] The clamp 20 is arranged above the second frame 140 so that the two extensions 24 of each clamp 20 are respectively aligned with the clamp mounting holes 142 of the second frame 140. A first spring 120 is respectively sleeved on each extension 24, which biases the clamp 20 and the second frame 140 to move away from each other. The connecting portion 30 at the bottom end of the extension 24 penetrates the mounting hole 142 and extends to the bottom of the second frame 140. In this embodiment, the specific form of the connecting portion 30 is a riveted portion, which is a hollow ring and is riveted to the bottom of the second frame 140 after passing through the second frame 140 to hold the clamp 20 on the second frame 140. The latch assembly 100 may include a plurality of washers 170, which are respectively sleeved on the connecting portion 30 of each clamp 20 so that the connecting portion 30 is stably held to the second frame 140 after riveting. In other embodiments, the connecting portion 30 may also be in other forms such as a threaded portion, and the washers 170 are correspondingly in the form of nuts or the like.

[0144] A plurality of second pins 88 are connected to the corresponding clamp 20, hook 50, and lever 72, respectively. Specifically, each second pin 88 penetrates the tongue hole 36 in the clamp 20, the slot 68 in the hook 50, and the second pivoting portion 74b of the lever 72 in sequence. According to the arrangement of the second pins 88, the clamp 20 and the lever 72 can rotate relative to the second pins 88, but cannot move vertically relative to the second pins 88. Therefore, the clamp 20 and the lever 72 can rotate relative to each other, and the lever 72 is allowed to drive the clamp 20 to move downward through the second pins 88. The slot 68 of the hook 50 allows the second pin 88 to move relative to the hook 50, so when the lever 72 drives the second pin 88 to move, the second pin 88 and the hook 50 will not interfere with each other, that is, the lever 72 will not drive the hook 50 to move downward through the second pin 88. It should be understood that in the opening and closing operation of the latch assembly 100 of the present application, the hook 50 will not move vertically at all, but only swing around the transverse axis.

[0145] Combined with reference Figure 3 , Figure 5A , Figure 5B The hook post 70 of the hook 72 is inserted into the V-shaped groove 37 of the clamp 20 and moves along the V-shaped groove 37 , thereby limiting the movement trajectory of the hook 72 relative to the clamp 20 .

[0146] In the case where the second pivoting portion 74 b of the lever 72 is formed as a protruding column, the second pin 88 may be omitted and replaced with the column.

[0147] Each foot 92 of the handle 90 is connected to a lever 72. Specifically, the second handle holes 95, 96 at the foot 92 are sleeved on the lever posts 82, 84 of the lever 72, so that the handle 90 moves together with the lever 72. In other embodiments, the handle 90 can be formed as one piece with the lever 72, so that the second handle holes 95, 96 and the lever posts 82, 84 can be omitted.

[0148] A plurality of first pins 86 connect the corresponding lever 72 and the linkage member 160 together. Specifically, each first pin 86 passes through the first pivoting portion 74a of the lever 72 and the linkage hole 161 of the linkage member 160 in sequence, so that the lever 72 and the linkage member 160 can rotate relative to each other and allow the two to drive each other. For the lever 72 connected to the handle 90, the linkage member 160 can be arranged between the lever 72 and the handle 90, that is, the first pin 86 passes through the first pivoting portion 74a of the lever 72, the linkage hole 160 of the linkage member 160, and the first handle hole 94 of the handle 90 in sequence. In other embodiments, the first pin 86 can also be a riveted component, and can be a riveted portion integrally formed with the lever 72.

[0149] Reference FIG. 12A to FIG. 14E The operation of the latch assembly 100 is described.

[0150] Reference FIG. 12A to FIG. 12E , wherein the latch assembly 100 is shown in an open state. At this time, the handle 90 is in a substantially vertical position, and the lever 72 is also in a substantially vertical position. The second frame 140 is aligned above the first frame 130. The first frame 130 is mounted to the first object 200, and the second object is located between the first frame 130 and the second frame 140. In this state, the second frame 140 applies a small pressure to the second object 200. More specifically, the first frame 130 is fixedly mounted to the first object 200 (e.g., by the mounting portion 134 of the first frame 130, see Figure 8 The second spring 125 disposed between the first frame 130 and the second frame 140 biases the second frame 140 away from the first frame 130, that is, biases the second frame 140 upward. The top end 131a of the frame column 131 of the first frame 130 is engaged with the upper surface of the second frame 140, thereby preventing the second frame 140 from being separated from the first frame 130.

[0151] In 12A to Fig.12E In the state, the engaging portion 60 of the hook 50 is only aligned with the engaging structure 132 of the first frame 130, but is not engaged with the engaging structure 132. Therefore, no force is generated between the hook 50 and the first frame 130.

[0152] Refer to 12D and Fig.12EIt can be seen that each linkage 160 forms a four-bar linkage structure, such as a parallelogram structure, with the second frame 140 through two levers 72, and the handle 90 operates one of the levers 72 in the four-bar linkage structure. Due to the four-bar linkage structure, when one lever 72 is operated to move, the linkage 160 and the other lever 72 will also move accordingly.

[0153] Now go to FIG. 13A to FIG. 13E , the handle 90 is rotated in a counterclockwise direction. It should be understood that the components of the latch assembly 100, the first object 200 and the second object 300 can be reversed or otherwise modified so that the handle 90 is configured to be rotated in a clockwise direction opposite to the counterclockwise direction for engagement.

[0154] exist FIG. 13A to FIG. 13E In the state, the lever 72 (i.e. Fig.13D and Fig.13E The lever 72 on the right side of the middle part rotates counterclockwise with the handle 90. At this time, the linkage 160 moves to the left under the drive of the handle 90, so that the lever 72 (i.e., the lever 72 not connected to the handle 90) Fig.13D and Fig.13E The lever 72 on the left side of the middle also rotates counterclockwise synchronously.

[0155] Since the cam 80 of each lever 72 is placed in the cam surface 66 (specifically the curved section 66a, see Figure 5A ), so the hook 50 is also rotated in the counterclockwise direction together with the handle 90 under the drive of the lever 72 until it is blocked. More specifically, because the protrusion 62 of the hook 50 abuts against the wall 38 of the clamp 20, the hook 50 cannot continue to rotate in the counterclockwise direction. As the hook 50 rotates around the post 86 of the lever 72, the hook post 70 of the hook 50 moves through the track 37a of the V-shaped groove 37 of the clamp 20 (see Figure 3 ). Then, the hook post 70 is aligned with the bottom end of the track 37b of the V-shaped groove 37. At this stage, the engaging portion 60 of the hook 50 moves to engage with the engaging structure 132 of the first frame 130, for example, moves below the engaging structure 132.

[0156] Now go to FIG. 14A to FIG. 14E , the handle 90 is further rotated in the counterclockwise direction. In the process, the rotation of the handle 90 further causes the cam 80 to rotate relative to the cam surface 66, and slide out of the curved section 66a and slide along the straight section 66b of the cam surface 66. Since the side 63 of the hook 50 is placed against the wall 38 of the clamp 20, the hook 50 cannot continue to rotate in the counterclockwise direction, so the engagement portion 60 of the hook 50 stays at the engagement structure 132 of the first frame 130, and the cam 80 of the lever 72 leaves the curved section 66a and enters the straight section 66b.

[0157] As the cam 80 rotates and slides along the straight section 66b of the cam surface 66, the hook 50 translates a slight amount in the upward direction until the engagement portion 60 is carried on the underside of the engagement structure 132 due to the geometry of the cam 80 and the cam surface 66. Once the engagement portion 60 of the hook 50 is carried on the underside of the engagement structure 132, the hook 50 actuates the lever 72 in the downward direction (i.e., toward the second frame 140). Figure 2 Since the first pin 86 connects the lever 72, the handle 90 and the clamp 20, the handle 90 and the clamp 20 move downward together with the lever 72. Moreover, as the cam 80 slides along the straight section 66b and the clamp 20 translates downward, the first pin 86 translates downward along the length of the slot 68 of the hook 50, and the track 37b of the V-shaped slot 37 of the clamp 20 translates downward along the hook post 70 of the hook 50.

[0158] Since the first spring 120 is disposed between the clamp 20 and the second frame 140, the translated clamp 20 actuates the second frame 140 to press down the second object 300. The first spring 120 is compressed as the clamp 20 moves downward to evenly distribute the pressure, thereby avoiding insufficient contact, accommodating the shape change of the first object 200 over time, and even damaging the second object 300. The stiffness of the first spring 120 affects the pressure applied by the second frame 140 to the second object 300. The stiffness of the spring and the number of springs can be varied to suit any particular application.

[0159] Rotate the handle 90 degrees to FIG. 14A to FIG. 14E During the process of moving from the substantially horizontal position (i.e., the closed state) shown in FIG. 1 , the cam 80 rotates counterclockwise relative to the cam surface 66 and slides along the straight section 66 b of the cam surface 66. The free end of the cam 80 eventually passes the top dead center position. Therefore, the cam 80 has a self-locking function, which can resist a certain degree of interference and will not accidentally leave the closed state, that is, the latch assembly 100 reaches the closed state. In the closed state, the handle 90 extends substantially in the horizontal direction (i.e., the transverse and longitudinal directions) to reduce the space occupied by the handle 90 above.

[0160] In the closed state, the cam 80 is positioned in the curved section 66c of the cam surface 66, as described above, and the lever 72 and the handle 90 are prevented from further counterclockwise rotation. At the same time, the load from the first spring 120 (transmitted through the clamp 20 and the hook 50) tends to rotate the lever 72 and the handle 90 in the counterclockwise direction by applying a downward force to the cam 80 against the cam surface 66. Unless a force sufficient to resist the bias of the spring load is applied to the handle 90, the handle 90 (and the entire latch assembly 100) cannot be moved to the open state. That is, the latch assembly 100 has a self-locking function.

[0161] In the closed state of the latch assembly 100, sufficient surface pressure is maintained between the first object 200 and the second object 300 to maximize heat transfer therebetween. The mechanical force provided by the latch assembly 100 is sufficient to meet the heat transfer requirements. As the first object 200 and / or the second object 300 expand or contract during their life, the first spring 120 allows the second object 300 to move slightly. In addition, a thermally conductive material such as silicone grease can be filled between the first object 200 and the second object 300 to further improve heat dissipation performance.

[0162] In order to make the latch assembly 100 FIG. 14A to FIG. 14E The closed state shown returns to FIG. 12A to FIG. 12E In the open state shown, the user rotates the handle 90 in a clockwise direction. Those skilled in the art will recognize that when the latch assembly 100 moves from the closed state back to the open state, the components of the latch assembly 100 will all move in the opposite direction as described above.

[0163] According to the present application, the latch assembly controls multiple levers synchronously through the handle, and the multiple levers respectively cause the corresponding hooks to rotate first and then move vertically, and then each hook drives the second frame to translate toward the first frame through the corresponding clamp. Therefore, the pressure from the handle is evenly distributed on the first frame through the multiple clamps, and at the same time, it can effectively prevent the rotation of the handle and the longitudinal movement of the linkage from applying a longitudinal torque to the second frame.

[0164] The hook is engaged to the first object through the first frame, and the cam can move over the center to reliably lock the second object in place. The second object can be fixed to the latch assembly by various mechanisms, but can also be arranged to be able to move vertically relative to the second frame. In this way, when the first object expands or contracts due to heat or long-term use, the second object can move vertically to accommodate the expansion and contraction of the first object.

[0165] Those skilled in the art will recognize that various changes and modifications may be made to the embodiments shown and selected for illustration and description without departing from the spirit or scope of the present invention. For example, the number of springs connected to each linkage may be increased or decreased. In addition, the position of the latch assembly may be moved, such as by relocating it from the side of the second article to opposite ends or corners. Moreover, the load applied to the second article may be adjusted in a variety of ways; for example, by changing the spring and / or by changing the shape of the cam that causes the compression.

[0166] The descriptions of directions such as “front”, “back”, “up” and “down” in this document are only for the convenience of understanding. The present invention is not limited to these directions but can be adjusted according to actual conditions.

[0167] Although preferred embodiments have been shown and described herein, it should be understood that these embodiments are provided as examples only. Those skilled in the art will appreciate that many modifications, changes and substitutions will not deviate from the spirit of the present invention. Therefore, the appended claims are intended to cover all such modifications that fall within the spirit and scope of the present invention.

Claims

1. A latch assembly (100) for contacting a first object (200) and a second object (300) with each other, characterized in that: The latch assembly (100) comprises: a first frame (130) mounted to the first object (200); a second frame (140) arranged to be operably close to the first frame (130) so that the second object (300) abuts against the first object (200); A plurality of clamps (20) respectively connected to the second frame (140); A plurality of first springs (120) are respectively connected to the clamps (20) and bias the clamps (20) and the second frame (140) away from each other; a handle (90) connected to the clamp (20) and operable to bring the clamp (20) into proximity with the first frame (130); and At least one linkage (160) is connected to the handle (90) so that the handle (90) operates each of the clamps (20) synchronously.

2. The latch assembly (100) according to claim 1, characterized in that: The handle (90) comprises a connecting arm (91) and at least one foot (92) extending from the connecting arm (91), and each of the feet (92) is respectively connected to a linkage (160) to synchronously operate at least one of the clamps (20).

3. The latch assembly (100) according to claim 2, characterized in that: The handle (90) rotates around a transverse axis, the feet (92) are arranged in a transverse direction and are respectively connected to the linkages (160) extending in a longitudinal direction, and the clamp (20) abuts against the second frame (140) in a vertical direction.

4. The latch assembly (100) according to claim 2, characterized in that: Each of the feet (92) comprises: A first section (92a) extending from the connecting arm (91); A second section (92b) extending in a bent manner from the first section (92a); and A third section (92c) extending in a bent manner from the second section (92c); Wherein, the second section (92b) is pivotally connected to the linkage (160), and the third section (92c) is connected to the clamp (20) via a lever (72).

5. The latch assembly (100) according to claim 4, characterized in that: The third section (92c) is substantially parallel to the first section (92a), and a plurality of second handle holes (95, 96) are formed on the third section (92c) for fixed connection to the lever (72).

6. The latch assembly (100) according to claim 1, characterized in that: The latch assembly (100) further includes a plurality of levers (72), each of the levers (72) being respectively connected to the clamp (20) to drive the clamp (20); and The handle (90) is directly connected to at least one of the levers (72) and is connected to the other levers (72) through the linkage (160) to synchronously operate the plurality of levers (72).

7. The latch assembly (100) according to claim 6, characterized in that: The handle (90) is formed integrally with at least one of the levers (72).

8. The latch assembly (100) according to claim 6, characterized in that: Each linkage member (160) forms a four-bar linkage structure with the second frame (140) via two levers (72), and the handle (90) operates one of the levers (72) in the four-bar linkage structure.

9. The latch assembly (100) according to claim 6, characterized in that: The lever (72) comprises: a panel (74) having an L-shape; and A first pivoting portion (74a) and a second pivoting portion (74b) are respectively arranged at two ends of the panel (74); The first pivoting portion (74a) is pivotally connected to the linkage member (160), and the second pivoting portion (74b) is pivotally connected to the clamp (20).

10. The latch assembly (100) according to claim 9, characterized in that: The first pivoting portion (74a) and the second pivoting portion (74b) are pivoting holes respectively; and The latch assembly (100) further includes a first pin (86) and a second pin (88) respectively passing through the first pivot portion (74a) and the second pivot portion (74b) to pivotally connect the lever (72) to the linkage (160) and the clamp (20).

11. The latch assembly (100) according to claim 9, characterized in that: The lever (72) also includes at least one lever post (82, 84) that rises from the panel (74) to fixedly connect the lever (72) to the handle (90).

12. The latch assembly (100) according to claim 6, characterized in that: The linkage member (160) is disposed laterally between the handle (90) and the lever (72).

13. The latch assembly (100) according to any one of claims 6 to 12, characterized in that: The lever (72) further includes a cam surface (80); The latch assembly (100) further includes a hook (50) movably coupled to the clamp (20) and having a cam surface (66) that engages the cam surface (80), the hook (50) having an engagement portion (60) configured to engage the first object (200); and wherein rotation of the handle (90) causes: (i) rotation of the hook (50), which causes the engaging portion (60) to engage with the first object (200); and then (ii) the cam surface (80) moves along the cam surface (66) of the hook (50), which causes the clamp (20) to translate toward the first object (200) against the bias of the first spring (120), thereby causing the second object (300) to contact the first object (200).

14. The latch assembly (100) according to claim 13, characterized in that: The engaging portion (60) is a hook (50).

15. The latch assembly (100) according to claim 13, characterized in that: Due to the bias of the first spring (120), the movement of the cam surface (80) along the cam surface (66) of the hook (50) beyond the top dead center position causes the clamp (20) to translate away from the first object (200) until the latch assembly (100) reaches a closed state, and in the closed state, the bias of the spring (120) restricts the handle (90) from accidentally rotating in the opposite direction and leaving the closed state.

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