Handle switch mechanism

Abstract

A handle switch mechanism, which is mounted on a first rail being movably mounted on a second rail having a through hole, includes: a handle with a protrusion, an actuator movably mounted in the first rail and having a hollow portion with two opposite side walls, an arc-shaped guide switchable between a first state and a second state and having its one end connected to the actuator front end and its other end abutting against the protrusion, and an ear lock pivoted to the first rail. When in the first state, the ear lock is located in the through hole, and the front end of the ear lock abuts against the side walls, so that the first rail and the second rail are in a locked state with each other.

Description

1. FIELD OF THE INVENTION

[0001] The present invention relates to switching mechanism, especially a handle switch mechanism used in a slide assembly.2. DESCRIPTION OF THE RELATED ART

[0002] Traditionally, the interior of a cabinet for storing computers and related equipment is provided with removable drawers arranged in layers, and slide rail assemblies are provided between the drawers and the cabinet to guide the drawers to slide in and out of the cabinet. The slide rail structure is composed of a bottom rail, a middle rail sliding on the bottom rail, and an inner rail sliding on the middle rail. The bottom rail is fixed to the inner side of the cabinet, and the inner rail is installed on the side of the drawer. The middle rail and the inner rail slide on the connected rails, so that the drawer can slide smoothly in and out of the cabinet. However, although the above-mentioned slide rail assembly is easy to operate and maintain, it is not very safe to use. The reasons are:

[0003] The aforementioned slide rail assembly lacks any braking or blocking devices, causing the machines on the drawers to easily slide into the cabinet due to inertia or accidental maintenance. This can cause damage to expensive industrial computers and related machines due to the huge impact force, and even cause the entire cabinet to accidentally overturn due to unstable center of gravity.SUMMARY OF THE INVENTION

[0004] The present invention provides a handle switch mechanism, particularly suitable for installation on a first rail, wherein the first rail is movably installed on a second rail, wherein the second rail has a through hole. The handle switch mechanism includes: a handle, an actuator, an arc-shaped guide, and an ear lock. The handle has a protrusion. The actuator is mounted on the inner side of the first rail. The actuator has a hollow portion, and the hollow portion is bent and extended to form a side wall on each of two opposite sides. One end of the arc-shaped guide is connected to the actuator front end, and the other end of the arc-shaped guide abuts the protrusion. The arc-shaped guide is switchable between a first state and a second state. The ear lock rear end is pivotally connected to the first rail. The ear lock front end is located on the side walls. Thus, when in the first state, the ear lock is located in the through hole and the ear lock abuts against the side walls, so that the first rail and the second rail are in a locked state with each other.

[0005] The present invention also provides a handle switch mechanism, particularly suitable for installation on a first rail, wherein the first rail is movably installed on a second rail. The handle switch mechanism includes: a frame, a hanging plate, a handle, an actuator, an arc-shaped guide, and an ear lock. The hanging plate can be movably connected to the frame. The frame and the hanging plate are respectively provided with a through hole for alignment. The frame and the hanging plate form the second rail. The handle has a protrusion. The actuator is mounted on the inner side of the first rail. The actuator has a hollow portion, and the hollow portion is bent and extended to form a side wall on each of two opposite sides. One end of the arc-shaped guide is connected to the actuator front end, and the other end of the arc-shaped guide abuts the protrusion. The arc-shaped guide is switchable between a first state and a second state. The ear lock rear end is pivotally connected to the first rail. The ear lock front end is movably mounted on the side walls. Thus, when in the first state, the ear lock is located in the through hole and the ear lock abuts against the side walls, so that the first rail and the second rail are in a locked state with each other.BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a schematic diagram of the handle switch mechanism of the present invention.

[0007] FIG. 2 is a partial schematic diagram of the handle switch mechanism of the present invention.

[0008] FIG. 3 is a cross-sectional view of the handle switch mechanism of the present invention.

[0009] FIG. 4 is an operation diagram of the transmission shaft of the handle switch mechanism of the present invention.

[0010] FIG. 5 is another operation diagram of the transmission shaft of the handle switch mechanism of the present invention.

[0011] FIG. 6 is another partial schematic diagram of the handle switch mechanism of the present invention.

[0012] FIG. 7 is another cross-sectional view of the handle switch mechanism of the present invention.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0013] Please refer to FIGS. 1 to 7. As shown in the figures, the handle switch mechanism 100 of the present invention is particularly suitable for installation on a first rail 200. The first rail 200 can be movably installation on a third rail 400, and the third rail 400 can be movably installed on the outer frame of a second rail 300. The second rail 300 can be composed of a hanging plate 301 and a sliding member 302 (e.g., a frame). The third rail 400 is used to extend the moving distance of the first rail 200 and the second rail 300. The outer frame of the second rail 300 and the hanging plate 301 are penetrated by a through hole 310 at a relative position. Specifically, the handle switch mechanism 100 of the present invention comprises a handle 110, a first elastic member 120, an actuator 130, a transmission shaft 114, an ear lock 140, and an elastic abutment member 150. The entire body of the handle 110 is substantially rectangular and one end of the handle 110 has at least one handle through hole 112. In this embodiment, the handle 110 has two handle through holes 112, but the present invention is not limited thereto. Furthermore, the first elastic member 120 is in a spiral shape and has two ends connected to the handle 110 and the first rail 200 respectively, wherein the first elastic member 120 can be a spiral spring. The actuator 130 can be movably mounted on the inner side of the first rail 200 through a plurality of fixing members FT. The actuator 130 has a hollow portion 132, and the hollow portion 132 is bent and extended on two opposite sides to form a respective side wall 134. The side wall 134 is L-shaped, wherein the top end 134V of the side wall 134 can be divided into a first top portion 134A and a second top portion 134B, and the first top portion 134A is relatively higher than the second top portion 134B. In addition, the actuator 130 is provided with an arc-shaped guide 137, one end of which is connected to the actuator front end 130F. The actuator front end 130F is vertically bent upward to form a first extension portion 136. The first extension portion 136 has a first extension through hole 136A. The arc-shaped guide 137 is located next to the first extension portion 136. The arc-shaped guide 137 is a cam. The structure, displacement, expansion and retraction of the first rail 200, the third rail 400 and the second rail 300 are already known in the art and will not be further described for the sake of brevity.

[0014] In addition, the handle 110 has a transmission shaft 114 and at least one handle through hole 112 for the transmission shaft 114 to pass through and be fixed, and one end of the transmission shaft 114 passes through the first extension through hole 136A. The handle 110 passes through the at least one handle through hole 112 and the first extension through hole 136A. One end of the transmission shaft 114 has a protrusion 116, and the protrusion 116 is supported on the other end of the arc-shaped guide 137, and has a first state and a second state.

[0015] The ear lock 140 is movably mounted on the side wall 134 of the hollow portion 132 of the actuator 130, and the ear lock rear end 140B is pivotally mounted on both sides of the first rail 200. The ear lock 140 is U-shaped and has a snap-fit portion 142 on the top. The ear lock front end 140F has a support portion 144 on each of two opposite sides. Furthermore, the elastic abutment member 150 is disposed on the inner side of the first rail 200. In the first state, one side of the elastic abutment member 150 lightly contacts the bottom of the ear lock 140 (i.e., the side opposite to the snap-fit portion 142). In the second state, the snap-fit portion 142 of the ear lock 140 is located in the through hole 310, and the ear lock front end 140F abuts against the side walls 134, locking the first rail 200 and the second rail 300 relative to each other, thereby preventing the first rail 200 and the second rail 300 from moving relative to each other.

[0016] The following will further explain the operating manner of the handle switch mechanism 100.

[0017] When the handle 110 is rotated by force, the protrusion 116 of the transmission shaft 114 on the handle 110 rotates synchronously. At t his time, the first state switches to the second state. The protrusion 116 of the transmission shaft 114 pushes against and moves downward along the other end of the arc-shaped guide 137. One end of the arc-shaped guide 137 connects to the actuator front end 130F, causing the actuator130 to move outward (outward in this case is defined as the direction toward the position of the handle 110). At this time, the first top portions 134A of the side walls 134 of the actuator 130 drive the support portions 144 on both sides of the ear lock front end 140F to move relatively to the second top portions 134B of the side walls 134 of the actuator 130, causing the ear lock front end 140F to move away from the second rail 300. The ear lock rear end 140B pivots, causing the bottom of the ear lock 140 to press downward against the elastic abutment member 150, and the ear lock rear end 140B will slightly tilt upward. This allows the snap-fit portion 142 of the ear lock 140 to tilt

[0018] away from the through hole 310, thereby allowing the first rail 200 and the second rail 300 to be in an unlocked state relative to each other, allowing the first rail 200 and the second rail 300 to move relative to each other. On the other hand, when the rotational force of the handle 110 disappears, the actuator 130 and the ear lock 140 will return from the second state to the first state.

[0019] It is worth mentioning that the handle switch mechanism 100 further comprises a second elastic member 160. One end of the second elastic member 160 is connected to the fixing members FT, and the other end of the second elastic member 160 is connected to the actuator 130. When the actuator 130 moves outward, the second elastic member 160 is also stretched due to the force, that is, it switches from the first state to the second state. When the rotation force on the handle 110 disappears, the second elastic member 160 returns to its original state and uses its own restoring force to pull the actuator 130 inward, returning it from the second state to the first state.

[0020] The handle switch mechanism 100 of the present invention further comprises an operating member 170, a safety lock 180, and a latch member (not shown, but those skilled in the art will readily understand the latch member) for causing the first rail 200 to move relative to the third rail 400 to a stop. A second extension portion 138 extends from the actuator rear end 130B, and the second extension portion 138 has a positioning groove 138A. The operating member 170 can be movably mounted on the first rail 200. The safety lock 180 is mounted on the front end 170F of the operating member 170 so as to be movable up and down and left and right. The safety lock 180 has a protrusion feature 182 and a switch operating portion 184. The latch member can be movably mounted on the inner side of the first rail 200. The rear end 170B of the operating member 170 is connected to the latch member. When the protrusion feature 182 of the safety lock 180 is moved to the interior of the positioning groove 138A through the switch operating portion 184, the actuator 130 can be linked to the operating member 170. Therefore, when the actuator 130 switches from the first state to the second state and moves outward, the operating member 170 moves outward. On the other hand, when the actuator 130 switches from the second state to the first state and moves outward, the operating member 170 moves inward.

[0021] The terms “installation,”“mounting,” and “connection” in the description and scope of the present invention and the accompanying drawings should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may also refer to mechanical connections. For those with ordinary knowledge in the relevant technical field, the specific meanings of the above terms in this patent can be understood in specific circumstances.

[0022] The terms “first,”“second,” etc. in the description and scope of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0023] The terms “upper,”“lower,”“left,”“right,”“front,”“back,”“top,”“bottom,”“inside,”“outside,” and “center” used in the specification and scope of the present invention and the accompanying drawings to indicate directions or positions are based on the directions or positions shown in the accompanying drawings. These terms are primarily used to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation.

[0024] Continuing from the above, some of the above terms can be used to express not only direction or position, but also other meanings. For example, the term “on” can also be used to express a kind of dependency or connection in certain situations. For ordinary technicians in this field, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0025] In summary, the handle switch mechanism disclosed in this invention can bring the following effects:

[0026] 1. Easy to operate and maintain;

[0027] 2. Allows operators to toggle the switch with a handle, improving safety and convenience; and

[0028] 3. A two-stage switching method significantly improves operator safety.

Examples

Embodiment Construction

[0013]Please refer to FIGS. 1 to 7. As shown in the figures, the handle switch mechanism 100 of the present invention is particularly suitable for installation on a first rail 200. The first rail 200 can be movably installation on a third rail 400, and the third rail 400 can be movably installed on the outer frame of a second rail 300. The second rail 300 can be composed of a hanging plate 301 and a sliding member 302 (e.g., a frame). The third rail 400 is used to extend the moving distance of the first rail 200 and the second rail 300. The outer frame of the second rail 300 and the hanging plate 301 are penetrated by a through hole 310 at a relative position. Specifically, the handle switch mechanism 100 of the present invention comprises a handle 110, a first elastic member 120, an actuator 130, a transmission shaft 114, an ear lock 140, and an elastic abutment member 150. The entire body of the handle 110 is substantially rectangular and one end of the handle 110 has at least one...

1. FIELD OF THE INVENTION

[0001] The present invention relates to switching mechanism, especially a handle switch mechanism used in a slide assembly.2. DESCRIPTION OF THE RELATED ART

[0002] Traditionally, the interior of a cabinet for storing computers and related equipment is provided with removable drawers arranged in layers, and slide rail assemblies are provided between the drawers and the cabinet to guide the drawers to slide in and out of the cabinet. The slide rail structure is composed of a bottom rail, a middle rail sliding on the bottom rail, and an inner rail sliding on the middle rail. The bottom rail is fixed to the inner side of the cabinet, and the inner rail is installed on the side of the drawer. The middle rail and the inner rail slide on the connected rails, so that the drawer can slide smoothly in and out of the cabinet. However, although the above-mentioned slide rail assembly is easy to operate and maintain, it is not very safe to use. The reasons are:

[0003] The aforementioned slide rail assembly lacks any braking or blocking devices, causing the machines on the drawers to easily slide into the cabinet due to inertia or accidental maintenance. This can cause damage to expensive industrial computers and related machines due to the huge impact force, and even cause the entire cabinet to accidentally overturn due to unstable center of gravity.SUMMARY OF THE INVENTION

[0004] The present invention provides a handle switch mechanism, particularly suitable for installation on a first rail, wherein the first rail is movably installed on a second rail, wherein the second rail has a through hole. The handle switch mechanism includes: a handle, an actuator, an arc-shaped guide, and an ear lock. The handle has a protrusion. The actuator is mounted on the inner side of the first rail. The actuator has a hollow portion, and the hollow portion is bent and extended to form a side wall on each of two opposite sides. One end of the arc-shaped guide is connected to the actuator front end, and the other end of the arc-shaped guide abuts the protrusion. The arc-shaped guide is switchable between a first state and a second state. The ear lock rear end is pivotally connected to the first rail. The ear lock front end is located on the side walls. Thus, when in the first state, the ear lock is located in the through hole and the ear lock abuts against the side walls, so that the first rail and the second rail are in a locked state with each other.

[0005] The present invention also provides a handle switch mechanism, particularly suitable for installation on a first rail, wherein the first rail is movably installed on a second rail. The handle switch mechanism includes: a frame, a hanging plate, a handle, an actuator, an arc-shaped guide, and an ear lock. The hanging plate can be movably connected to the frame. The frame and the hanging plate are respectively provided with a through hole for alignment. The frame and the hanging plate form the second rail. The handle has a protrusion. The actuator is mounted on the inner side of the first rail. The actuator has a hollow portion, and the hollow portion is bent and extended to form a side wall on each of two opposite sides. One end of the arc-shaped guide is connected to the actuator front end, and the other end of the arc-shaped guide abuts the protrusion. The arc-shaped guide is switchable between a first state and a second state. The ear lock rear end is pivotally connected to the first rail. The ear lock front end is movably mounted on the side walls. Thus, when in the first state, the ear lock is located in the through hole and the ear lock abuts against the side walls, so that the first rail and the second rail are in a locked state with each other.BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a schematic diagram of the handle switch mechanism of the present invention.

[0007] FIG. 2 is a partial schematic diagram of the handle switch mechanism of the present invention.

[0008] FIG. 3 is a cross-sectional view of the handle switch mechanism of the present invention.

[0009] FIG. 4 is an operation diagram of the transmission shaft of the handle switch mechanism of the present invention.

[0010] FIG. 5 is another operation diagram of the transmission shaft of the handle switch mechanism of the present invention.

[0011] FIG. 6 is another partial schematic diagram of the handle switch mechanism of the present invention.

[0012] FIG. 7 is another cross-sectional view of the handle switch mechanism of the present invention.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0013] Please refer to FIGS. 1 to 7. As shown in the figures, the handle switch mechanism 100 of the present invention is particularly suitable for installation on a first rail 200. The first rail 200 can be movably installation on a third rail 400, and the third rail 400 can be movably installed on the outer frame of a second rail 300. The second rail 300 can be composed of a hanging plate 301 and a sliding member 302 (e.g., a frame). The third rail 400 is used to extend the moving distance of the first rail 200 and the second rail 300. The outer frame of the second rail 300 and the hanging plate 301 are penetrated by a through hole 310 at a relative position. Specifically, the handle switch mechanism 100 of the present invention comprises a handle 110, a first elastic member 120, an actuator 130, a transmission shaft 114, an ear lock 140, and an elastic abutment member 150. The entire body of the handle 110 is substantially rectangular and one end of the handle 110 has at least one handle through hole 112. In this embodiment, the handle 110 has two handle through holes 112, but the present invention is not limited thereto. Furthermore, the first elastic member 120 is in a spiral shape and has two ends connected to the handle 110 and the first rail 200 respectively, wherein the first elastic member 120 can be a spiral spring. The actuator 130 can be movably mounted on the inner side of the first rail 200 through a plurality of fixing members FT. The actuator 130 has a hollow portion 132, and the hollow portion 132 is bent and extended on two opposite sides to form a respective side wall 134. The side wall 134 is L-shaped, wherein the top end 134V of the side wall 134 can be divided into a first top portion 134A and a second top portion 134B, and the first top portion 134A is relatively higher than the second top portion 134B. In addition, the actuator 130 is provided with an arc-shaped guide 137, one end of which is connected to the actuator front end 130F. The actuator front end 130F is vertically bent upward to form a first extension portion 136. The first extension portion 136 has a first extension through hole 136A. The arc-shaped guide 137 is located next to the first extension portion 136. The arc-shaped guide 137 is a cam. The structure, displacement, expansion and retraction of the first rail 200, the third rail 400 and the second rail 300 are already known in the art and will not be further described for the sake of brevity.

[0014] In addition, the handle 110 has a transmission shaft 114 and at least one handle through hole 112 for the transmission shaft 114 to pass through and be fixed, and one end of the transmission shaft 114 passes through the first extension through hole 136A. The handle 110 passes through the at least one handle through hole 112 and the first extension through hole 136A. One end of the transmission shaft 114 has a protrusion 116, and the protrusion 116 is supported on the other end of the arc-shaped guide 137, and has a first state and a second state.

[0015] The ear lock 140 is movably mounted on the side wall 134 of the hollow portion 132 of the actuator 130, and the ear lock rear end 140B is pivotally mounted on both sides of the first rail 200. The ear lock 140 is U-shaped and has a snap-fit portion 142 on the top. The ear lock front end 140F has a support portion 144 on each of two opposite sides. Furthermore, the elastic abutment member 150 is disposed on the inner side of the first rail 200. In the first state, one side of the elastic abutment member 150 lightly contacts the bottom of the ear lock 140 (i.e., the side opposite to the snap-fit portion 142). In the second state, the snap-fit portion 142 of the ear lock 140 is located in the through hole 310, and the ear lock front end 140F abuts against the side walls 134, locking the first rail 200 and the second rail 300 relative to each other, thereby preventing the first rail 200 and the second rail 300 from moving relative to each other.

[0016] The following will further explain the operating manner of the handle switch mechanism 100.

[0017] When the handle 110 is rotated by force, the protrusion 116 of the transmission shaft 114 on the handle 110 rotates synchronously. At t his time, the first state switches to the second state. The protrusion 116 of the transmission shaft 114 pushes against and moves downward along the other end of the arc-shaped guide 137. One end of the arc-shaped guide 137 connects to the actuator front end 130F, causing the actuator130 to move outward (outward in this case is defined as the direction toward the position of the handle 110). At this time, the first top portions 134A of the side walls 134 of the actuator 130 drive the support portions 144 on both sides of the ear lock front end 140F to move relatively to the second top portions 134B of the side walls 134 of the actuator 130, causing the ear lock front end 140F to move away from the second rail 300. The ear lock rear end 140B pivots, causing the bottom of the ear lock 140 to press downward against the elastic abutment member 150, and the ear lock rear end 140B will slightly tilt upward. This allows the snap-fit portion 142 of the ear lock 140 to tilt

[0018] away from the through hole 310, thereby allowing the first rail 200 and the second rail 300 to be in an unlocked state relative to each other, allowing the first rail 200 and the second rail 300 to move relative to each other. On the other hand, when the rotational force of the handle 110 disappears, the actuator 130 and the ear lock 140 will return from the second state to the first state.

[0019] It is worth mentioning that the handle switch mechanism 100 further comprises a second elastic member 160. One end of the second elastic member 160 is connected to the fixing members FT, and the other end of the second elastic member 160 is connected to the actuator 130. When the actuator 130 moves outward, the second elastic member 160 is also stretched due to the force, that is, it switches from the first state to the second state. When the rotation force on the handle 110 disappears, the second elastic member 160 returns to its original state and uses its own restoring force to pull the actuator 130 inward, returning it from the second state to the first state.

[0020] The handle switch mechanism 100 of the present invention further comprises an operating member 170, a safety lock 180, and a latch member (not shown, but those skilled in the art will readily understand the latch member) for causing the first rail 200 to move relative to the third rail 400 to a stop. A second extension portion 138 extends from the actuator rear end 130B, and the second extension portion 138 has a positioning groove 138A. The operating member 170 can be movably mounted on the first rail 200. The safety lock 180 is mounted on the front end 170F of the operating member 170 so as to be movable up and down and left and right. The safety lock 180 has a protrusion feature 182 and a switch operating portion 184. The latch member can be movably mounted on the inner side of the first rail 200. The rear end 170B of the operating member 170 is connected to the latch member. When the protrusion feature 182 of the safety lock 180 is moved to the interior of the positioning groove 138A through the switch operating portion 184, the actuator 130 can be linked to the operating member 170. Therefore, when the actuator 130 switches from the first state to the second state and moves outward, the operating member 170 moves outward. On the other hand, when the actuator 130 switches from the second state to the first state and moves outward, the operating member 170 moves inward.

[0021] The terms “installation,”“mounting,” and “connection” in the description and scope of the present invention and the accompanying drawings should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may also refer to mechanical connections. For those with ordinary knowledge in the relevant technical field, the specific meanings of the above terms in this patent can be understood in specific circumstances.

[0022] The terms “first,”“second,” etc. in the description and scope of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0023] The terms “upper,”“lower,”“left,”“right,”“front,”“back,”“top,”“bottom,”“inside,”“outside,” and “center” used in the specification and scope of the present invention and the accompanying drawings to indicate directions or positions are based on the directions or positions shown in the accompanying drawings. These terms are primarily used to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation.

[0024] Continuing from the above, some of the above terms can be used to express not only direction or position, but also other meanings. For example, the term “on” can also be used to express a kind of dependency or connection in certain situations. For ordinary technicians in this field, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0025] In summary, the handle switch mechanism disclosed in this invention can bring the following effects:

[0026] 1. Easy to operate and maintain;

[0027] 2. Allows operators to toggle the switch with a handle, improving safety and convenience; and

[0028] 3. A two-stage switching method significantly improves operator safety.

Examples

Embodiment Construction

[0013]Please refer to FIGS. 1 to 7. As shown in the figures, the handle switch mechanism 100 of the present invention is particularly suitable for installation on a first rail 200. The first rail 200 can be movably installation on a third rail 400, and the third rail 400 can be movably installed on the outer frame of a second rail 300. The second rail 300 can be composed of a hanging plate 301 and a sliding member 302 (e.g., a frame). The third rail 400 is used to extend the moving distance of the first rail 200 and the second rail 300. The outer frame of the second rail 300 and the hanging plate 301 are penetrated by a through hole 310 at a relative position. Specifically, the handle switch mechanism 100 of the present invention comprises a handle 110, a first elastic member 120, an actuator 130, a transmission shaft 114, an ear lock 140, and an elastic abutment member 150. The entire body of the handle 110 is substantially rectangular and one end of the handle 110 has at least one...

Claims

1. A handle switch mechanism for mounting on a first rail, said first rail being movably mounted on a second rail having a through hole, the handle switch mechanism comprising:a handle comprising a protrusion;an actuator movably mounted on an inner side of said first rail, said actuator comprising a hollow portion, said hollow portion having two opposite sides thereof bent and extended to form a respective side wall;an arc-shaped guide having one end thereof connected to a front end of said actuator and an opposite end thereof abutting against said protrusion of said handle, said arc-shaped guide being switchable between a first state and a second state; andan ear lock pivoted to said first rail, said ear lock having a front end thereof movably mounted on said side walls;wherein when in said first state, said ear lock is located in said through hole, and the front end of said ear lock abuts against said side walls, so that said first rail and said second rail are in a locked state with each other.

2. The handle switch mechanism as claimed in claim 1, wherein when said handle rotates under force, said protrusion of said handle rotates synchronously, said first state is switched to said second state, said protrusion pushes against an opposite end of said arc-shaped guide, and the said one end of said arc-shaped guide links the front end of said actuator, causing said actuator to move outward, at this point, said side walls of said actuator drive the front end of said ear lock away from said second rail, causing an opposite rear end of said ear lock to pivot and disengage from said through hole, leaving said first rail and said second rail in an unlocked state.

3. The handle switch mechanism as claimed in claim 1, further comprising a first elastic member and an elastic abutment member, said first elastic member having two opposite ends thereof connected to said handle and said first rail respectively, said elastic abutment member being located inside said first rail, wherein in said first state, one side of said elastic abutment member touches a bottom of said ear lock, and said ear lock is located in said through hole so that said first rail and said second rail are in the locked state with each other.

4. The handle switch mechanism as claimed in claim 3, further comprising a second elastic member, said second elastic member having one end thereof connected to said fixing members and an opposite end thereof connected to said actuator, so that when said actuator moves outward, said second elastic member is also stretched due to the force.

5. The handle switch mechanism as claimed in claim 1, wherein the front end of said actuator is bent vertically upward to form a first extension portion, which is provided with a first extension through hole; said handle further comprises a transmission shaft and at least one handle through hole for said transmission shaft to pass through and be fixed, said transmission shaft having one end thereof passed through said first extension through hole.

6. The handle switch mechanism as claimed in claim 5, further comprising an elastic abutment member located inside said first rail, wherein said ear lock comprises a support portion on each of two opposite sides of the front end thereof; each said side wall of said actuator comprises a first top portion and a second top portion located at atop end thereof, said first top portion being higher than said second top portion.

7. The handle switch mechanism as claimed in claim 6, wherein said ear lock further comprises a snap-fit portion on a top thereof; when said handle is rotated by force, said actuator moves outward through said transmission shaft, and said protrusion of said transmission shaft moves downward along said arc-shaped guide, and said support portions on both sides of the front end of said ear lock move relatively from said first top portions to said second top portions, causing an opposite bottom of said ear lock to press down on said elastic abutment member, so that said snap-fit portion of said ear lock tilts away from said through hole, placing said first rail and said second rail in an unlocked state.

8. The handle switch mechanism as claimed in claim 6, wherein when the rotational force of said handle disappears, said actuator and said ear lock return from said second state to said first state.

9. The handle switch mechanism as claimed in claim 6, further comprising operating member and a safety lock, said safety lock being installed on a front end of said operating member and being capable of moving up and down and left and right relative to said operating member, said safety lock comprising a protrusion feature and a switch operating portion, said operating member being movably mounted on said first rail.

10. The handle switch mechanism as claimed in claim 9, wherein said actuator further comprises a second extension portion extending from a rear end thereof and a positioning groove located on said second extension portion; when said protrusion feature of said safety lock is moved into said positioning groove via said switch operating portion, said actuator and said operating member are interconnected, and when said actuator switches from said first state to said second state and moves outward, said operating member also moves outward.

11. A handle switch mechanism for mounting on a first rail, said first rail being movably mounted on a second rail having a through hole, the handle switch mechanism comprising:a frame and a hanging plate movably connected to said frame, said frame and said hanging plate being respectively provided with a through hole for alignment, said frame and said hanging plate constituting said second rail;a handle comprising a protrusion;an actuator movably mounted on an inner side of said first rail, said actuator comprising a hollow portion, said hollow portion having two opposite sides thereof bent and extended to form a respective side wall;an arc-shaped guide having one end thereof connected to a front end of said actuator and an opposite end thereof abutting against said protrusion of said handle, said arc-shaped guide being switchable between a first state and a second state; andan ear lock pivoted to said first rail, said ear lock having a front end thereof movably mounted on said side walls;wherein when in said first state, said ear lock is located in said through hole, and the front end of said ear lock abuts against said side walls, so that said first rail and said second rail are in a locked state with each other.

12. The handle switch mechanism as claimed in claim 11, wherein when said handle rotates under force, said protrusion of said handle rotates synchronously, said first state is switched to said second state, said protrusion pushes against an opposite end of said arc-shaped guide, and the said one end of said arc-shaped guide links the front end of said actuator, causing said actuator to move outward, at this point, said side walls of said actuator drive the front end of said ear lock away from said second rail, causing an opposite rear end of said ear lock to pivot and disengage from said through hole, leaving said first rail and said second rail in an unlocked state.

13. The handle switch mechanism as claimed in claim 11, further comprising a first elastic member and an elastic abutment member, said first elastic member having two opposite ends thereof connected to said handle and said first rail respectively, said elastic abutment member being located inside said first rail, wherein said actuator is mounted on the inner side of said first rail through a plurality of fixing members; when in said first state, one side of said elastic abutment member touches a bottom of said ear lock, and said ear lock is located in said through hole so that said first rail and said second rail are in the locked state with each other.

14. The handle switch mechanism as claimed in claim 13, further comprising a second elastic member, said second elastic member having one end thereof connected to said fixing members and an opposite end thereof connected to said actuator, so that when said actuator moves outward, said second elastic member is also stretched due to the force.

15. The handle switch mechanism as claimed in claim 11, wherein the front end of said actuator is bent vertically upward to form a first extension portion, which is provided with a first extension through hole; said handle further comprises a transmission shaft and at least one handle through hole for said transmission shaft to pass through and be fixed, said transmission shaft having one end thereof passed through said first extension through hole.

16. The handle switch mechanism as claimed in claim 15, further comprising anelastic abutment member located inside said first rail, wherein said ear lock comprises a support portion on each of two opposite sides of the front end thereof; each said side wall of said actuator comprises a first top portion and a second top portion located at a top end thereof, said first top portion being higher than said second top portion.

17. The handle switch mechanism as claimed in claim 16, wherein said ear lock further comprises a snap-fit portion on a top thereof; when said handle is rotated by force, said actuator moves outward through said transmission shaft, and said protrusion of said transmission shaft moves downward along said arc-shaped guide, and said support portions on both sides of the front end of said ear lock move relatively from said first top portions to said second top portions, causing an opposite bottom of said ear lock to press down on said elastic abutment member, so that said snap-fit portion of said ear lock tilts away from said through hole, placing said first rail and said second rail in an unlocked state.

18. The handle switch mechanism as claimed in claim 16, wherein when the rotational force of said handle disappears, said actuator and said ear lock return from said second state to said first state.

19. The handle switch mechanism as claimed in claim 11, further comprising operating member and a safety lock, said safety lock being installed on a front end of said operating member and being capable of moving up and down and left and right relative to said operating member, said safety lock comprising a protrusion feature and a switch operating portion, said operating member being movably mounted on said first rail.

20. The handle switch mechanism as claimed in claim 19, wherein said actuator further comprises a second extension portion extending from a rear end thereof and a positioning groove located on said second extension portion; when said protrusion feature of said safety lock is moved into said positioning groove via said switch operating portion, said actuator and said operating member are interconnected, and when said actuator switches from said first state to said second state and moves outward, said operating member also moves outward.

Images