Locking mechanism

Abstract

The utility model discloses a locking mechanism which comprises a tray, a lock hook, a self-locking block and a first elastic piece, the lock hook is rotatably connected to the tray, the self-locking block is slidably connected to the tray, the two ends of the first elastic piece are connected with the self-locking block and the tray respectively, and when the self-locking block is stressed to move to a locking position, the self-locking block is locked by the first elastic piece. The lock hook locks a product placed on the tray under the elastic action of the first elastic piece, and when the self-locking block is stressed to move to the unlocking position, the self-locking block loosens the lock hook. Compared with the prior art that a lock hook is controlled to lock or loosen the product through an air cylinder, power assemblies such as the air cylinder connected to the tray can be omitted, and therefore for the movable tray, the problem that the product cannot be locked tightly due to air leakage can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a locking mechanism. Background Art

[0002] For fixtures on turntables or production lines, if you want to lock the product, you usually need a cylinder to apply the locking force. However, since the air source needs to be supplied to the moving fixture, it is easy to leak, thus losing the function of locking the product.

[0003] Therefore, how to improve the locking stability of the product is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0004] The utility model aims to provide a locking mechanism which can effectively improve the locking stability of a product.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A locking mechanism comprises: a tray, a locking hook, a self-locking block and a first elastic member, wherein the locking hook is rotatably connected to the tray, the self-locking block is slidably connected to the tray, and both ends of the first elastic member are respectively connected to the self-locking block and the tray, and when the self-locking block is forced to move to a locking position, the locking hook locks the product placed on the tray under the elastic force of the first elastic member, and when the self-locking block is forced to move to an unlocking position, the self-locking block releases the locking hook.

[0007] In some embodiments, the locking hook includes a hook body and a hook head, the hook head is located on the side of one end of the hook body, a fixed seat is provided on the tray, a hook receiving groove and a sliding groove are provided on the fixed seat, the hook receiving groove and the sliding groove are communicated, the hook body is rotatably connected to the hook receiving groove, and the hook head extends out of the hook receiving groove when in the locked position; the self-locking block is slidably connected to the sliding groove, and a pushing portion is provided on the side of the self-locking block facing the hook body, and the self-locking block is used to drive the hook body to rotate relative to the fixed seat through the pushing portion.

[0008] In some embodiments, the pushing portion includes a protrusion arranged on the self-locking block toward the side of the hook body, the hook body is provided with a groove on the side facing the self-locking block, the inner bottom surface of the groove is provided with a first inclined surface inclined obliquely downward toward the self-locking block, the protrusion is located in the groove, and the self-locking block is forced to move downward to move to the unlocking position under the guidance of the first inclined surface; the self-locking block moves upward under the action of the first elastic member to push the hook body to rotate through the side of the self-locking block that contacts the hook body to lock the product placed on the tray.

[0009] In some embodiments, the locking mechanism also includes a lifting mechanism and a pushing assembly, wherein the lifting mechanism is located below the tray, and the pushing assembly is located above the tray, and the lifting mechanism is used to lift the tray and move it upward so that the pushing assembly contacts the top of the self-locking block, and as the tray moves upward, the self-locking block moves downward until it moves to the unlocking position.

[0010] In some embodiments, the pushing assembly includes a support frame and a pushing member, the support frame is straddled on a conveying device for conveying the pallet, and the pushing member is connected to the support frame and corresponds to the slide groove up and down.

[0011] In some embodiments, a first avoidance groove is provided on one side of the self-locking block, the first avoidance groove is located below the protrusion, and an unlocking portion corresponding to the first avoidance groove is provided on the side of the lower end of the locking hook facing the self-locking block.

[0012] In some embodiments, the upper end of the slide groove is closed and the lower end is provided with an opening, the two ends of the first elastic member are respectively pressed against the inner top of the slide groove and the upper end of the self-locking block, and the upper part of the self-locking block and the side facing the hook body are provided with a second inclined surface in contact with the hook body, the self-locking block moves downward under the elastic force of the first elastic member, and the hook body is pushed to rotate by the second inclined surface so that the hook head locks the product placed on the tray; the end of the hook body away from the hook head and the side facing the self-locking block are pressed against the slide groove through the second elastic member.

[0013] In some embodiments, the self-locking block is provided with a second avoidance groove for the second elastic member to pass through.

[0014] In some embodiments, the hook body is provided with a receiving groove for accommodating one end of the second elastic member.

[0015] In some embodiments, the locking mechanism further includes a lifting mechanism located below the tray, and a lift rod of the lifting mechanism is used to extend into the slide groove from an opening at the bottom of the slide groove to lift the self-locking block to the unlocking position.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] The utility model provides a locking mechanism. When the locking block is forced to move to the locking position, the locking hook locks the product placed on the pallet under the elastic force of the first elastic member. When the locking block is forced to move to the unlocking position, the locking hook is released. Compared with the prior art in which the locking hook is controlled by a cylinder to lock or release the product, power components such as the cylinder connected to the pallet can be omitted. Therefore, for a movable pallet, the problem of the product not being locked tightly due to air leakage can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A partial cross-sectional structural schematic diagram of a locking mechanism provided in a specific embodiment of the utility model;

[0020] Figure 2 A three-dimensional structural schematic diagram of a locking mechanism provided in a specific embodiment of the utility model;

[0021] Figure 3 A structural schematic diagram of a tray of a locking mechanism provided in a specific embodiment of the utility model;

[0022] Figure 4 A structural schematic diagram of a lifting mechanism of a locking mechanism provided in a specific embodiment of the utility model;

[0023] Figure 5 A structural schematic diagram of a lifting mechanism of a locking mechanism provided by another specific embodiment of the utility model when in a locked state;

[0024] Figure 6 The present invention is a structural schematic diagram of a lifting mechanism of a locking mechanism in an open state provided in another specific embodiment of the present invention.

[0025] The reference numerals are as follows:

[0026] 100-products;

[0027] 10-tray, 11-fixed seat, 111-hook receiving slot, 112-slide slot;

[0028] 20-lock hook, 21-hook body, 22-hook head, 221-pressing plane, 23-groove, 24-first inclined surface, 25-unlocking portion;

[0029] 30-self-locking block, 31-protrusion, 32-first avoidance groove, 33-second inclined surface, 34-second avoidance groove;

[0030] 40-first elastic member, 41-second elastic member;

[0031] 50-lifting mechanism;

[0032] 60-thrust member;

[0033] 70-Support frame. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Please refer to Figure 1 to Figure 6 A locking mechanism provided by an embodiment of the utility model includes: a tray 10, a locking hook 20, a self-locking block 30 and a first elastic member 40, wherein the locking hook 20 is rotatably connected to the tray 10, the self-locking block 30 is slidably connected to the tray 10, and the two ends of the first elastic member 40 are respectively connected to the self-locking block 30 and the tray 10, wherein the locking hook 20 and the self-locking block 30 can be set at positions close to the edges of the tray 10, and the middle position of the tray 10 is used to place the product 100 that needs to be locked, and one locking hook 20 corresponds to one self-locking block 30. When the self-locking block 30 moves, it can push the locking hook 20 to perform locking or unlocking operations. In the specific working process, when the self-locking block 30 is forced to move to the locking position, the locking hook 20 locks the product 100 placed on the tray 10 under the elastic force of the first elastic member 40, and when the self-locking block 30 is forced to move to the unlocking position, the self-locking block 30 releases the locking hook 20, for example Figure 1As shown, when the self-locking block 30 is subjected to external pressure, the self-locking block 30 moves downward to push the lock hook 20 to rotate counterclockwise, thereby releasing the lock hook 20; when the self-locking block 30 is freed from external pressure, the self-locking block 30 is subjected to the elastic force of the first elastic member 40, and the self-locking block 30 moves to the upper part, which is the locking position. The lock hook 20 is pushed by the self-locking block 30 and can rotate clockwise relative to the tray 10 to lock the product 100. In this state, the lock hook 20 is indirectly subjected to the elastic force of the first elastic member 40 through the self-locking block 30, and no additional power components are required to enable the lock hook 20 to lock the product 100. Compared with the prior art, in which the lock hook 20 is controlled by a cylinder to lock or release the product 100, the power components such as the cylinder connected to the tray 10 can be omitted, so for the movable tray 10, the problem of the product 100 not being locked tightly due to air leakage can be avoided.

[0036] In some embodiments, Figure 1 As shown, the locking hook 20 includes a hook body 21 and a hook head 22, wherein the hook head 22 is located at the side of one end of the hook body 21, and a fixing seat 11 is provided on the tray 10, wherein a plurality of fixing seats 11 can be arranged at the edge position of the tray 10, and each fixing seat 11 is provided with a locking hook 20 and a self-locking block 30, wherein a hook receiving groove 111 and a slide groove 112 are provided on the fixing seat 11, and the hook receiving groove 111 and the slide groove 112 are communicated, and the hook body 21 is rotatably connected to the hook receiving groove 111, for example, it is rotatably connected to the receiving groove through a pin shaft, and the hook head 22 extends out of the hook receiving groove 111 when it is in the locking position; the self-locking block 30 is slidably connected to the slide groove 112, and a pushing portion is provided on the side of the self-locking block 30 facing the hook body 21, and the self-locking block 30 is used to drive the hook body 21 to rotate relative to the fixing seat 11 through the pushing portion, for example Figure 1 As shown, when the self-locking block 30 moves upward, the hook body 21 can be pushed by the pushing portion to rotate clockwise, and when the self-locking block 30 moves downward, the hook body 21 can be pushed by the pushing portion to rotate counterclockwise.

[0037] In some embodiments, the pushing portion includes a protrusion 31 disposed on the self-locking block 30 and facing the hook body 21. The hook body 21 is provided with a groove 23 on the side facing the self-locking block 30. The inner bottom surface of the groove 23 is provided with a first inclined surface 24 inclined obliquely downward toward the self-locking block 30. The protrusion 31 is located in the groove 23. Figure 1As shown, a protrusion 31 is provided at a position near the middle of the right side of the self-locking block 30, and a groove 23 is provided at a position near the lower part of the left side of the hook body 21. The inner bottom surface of the groove 23 is provided with a first inclined surface 24 inclined toward the lower left direction. The self-locking block 30 is forced to move downward, so as to move to the unlocking position under the guidance of the first inclined surface 24; the self-locking block 30 moves upward under the action of the first elastic member 40, so as to push the hook body 21 to rotate through the side of the self-locking block 30 in contact with the hook body 21, so as to lock the product 100 placed on the tray 10, that is, the pushing portion also includes a side surface on the right side of the self-locking block 30, wherein the right side and the top of the self-locking block 30 are in an arc transition. When the self-locking block 30 moves upward, the arc surface will push the lock hook 20 to rotate in the clockwise direction until the self-locking block 30 moves upward to the top position of the slide groove 112. At this time, under the elastic force of the first elastic member 40, the lock hook 20 is limited to the locking position.

[0038] In some embodiments, the locking mechanism further includes a lifting mechanism 50 and a pushing assembly, wherein the lifting mechanism 50 is located below the tray 10, and the pushing assembly is located above the tray 10. The lifting mechanism 50 is preferably a cylinder, which is located below the two guide rails of the conveying device, and the cylinder does not move with the conveying device. When the tray 10 moves to the top of the lifting mechanism 50, the lifting mechanism 50 lifts the tray 10 and moves it upward, so that the pushing assembly contacts the top of the self-locking block 30. As the tray 10 moves upward, the self-locking block 30 moves downward until it moves to the unlocking position. At this time, the locking hook 20 is in the unlocking state, and the product 100 can be placed on the tray 10. Then the lifting mechanism 50 moves downward with the tray 10. At this time, the self-locking block 30 is lifted to the upper part of the slide groove 112 under the elastic force of the first elastic member 40. At this time, the locking hook 20 is locked, and the product 100 can be pressed on the tray 10.

[0039] In some embodiments, Figure 2 and Figure 3 As shown, the push assembly includes a support frame 70 and a push member 60. The support frame 70 is arranged across the conveying device for conveying the pallet 10, wherein the support frame 70 is preferably an n-shaped frame, and the two ends of the support frame 70 are fixed on the two sides of the conveying device. The push member 60 is connected to the support frame 70 and corresponds to the slide slot 112 up and down, wherein the push member 60 is preferably a screw, and the screw can be vertically connected to the support frame 70. The number of screws is the same as the number of self-locking blocks 30, and they correspond one to one. Specifically, a plurality of support frames 70 can be arranged on the conveying device along its conveying direction, and a plurality of screws are arranged on each support frame 70. When facing different pallets 10, the position of the self-locking block 30 may be different, so different pallets 10 can be adapted by adjusting the position of the screw.

[0040] In some embodiments, a first avoidance groove 32 is provided on one side of the self-locking block 30, and the first avoidance groove 32 is located below the protrusion 31. A lock portion 25 corresponding to the first avoidance groove 32 is provided on the lower end of the lock hook 20 facing the self-locking block 30. Figure 1 As shown, a first avoidance groove 32 is provided at a position near the middle of the right side of the locking block 30, and an unlocking portion 25 is provided on the left side of the lower end of the lock hook 20. When the locking block moves upward, the unlocking portion 25 is located in the first avoidance groove 32. When the locking block moves downward, the protrusion 31 on the right side of the locking block contacts the first inclined surface 24 on the upper surface of the unlocking portion 25. As the locking block continues to move downward, the protrusion 31 will move relative to the first inclined surface 24, thereby pushing the hook body 21 to rotate counterclockwise, thereby opening the lock hook 20.

[0041] In some embodiments, Figure 5 and Figure 6 As shown, the upper end of the slide groove 112 is closed and the lower end is provided with an opening, the two ends of the first elastic member 40 are respectively pressed against the inner top of the slide groove 112 and the upper end of the self-locking block 30, and the upper part of the self-locking block 30 and the side facing the hook body 21 are provided with a second inclined surface 33 in contact with the hook body 21. The self-locking block 30 moves downward under the elastic force of the first elastic member 40, and pushes the hook body 21 to rotate through the second inclined surface 33, so that the hook head 22 locks the product 100 placed on the tray 10, wherein the bottom surface of the hook head 22 is preferably a pressing plane 221 to ensure the contact area during pressing; the end of the hook body 21 away from the hook head 22 and facing the self-locking block 30 is pressed against the slide groove 112 through the second elastic member 41, as shown in FIG. Figure 6 As shown, when the self-locking block 30 is subjected to a top thrust, the direction of the top thrust is as follows: Figure 6 As shown by the arrow in , the self-locking block 30 moves upward to compress the spring, and at the same time releases the abutment relationship between the self-locking block 30 and the lock hook 20. At this time, the lock hook 20 is pushed to rotate counterclockwise under the action of the second elastic member 41 to open the lock hook 20.

[0042] In some embodiments, the self-locking block 30 is provided with a second avoidance groove 34 for the second elastic member 41 to pass through. Figure 5 As shown, the second elastic member 41 transversely penetrates the second avoidance groove 34, wherein in order to improve the installation stability of the second elastic member 41, a receiving groove for accommodating one end of the second elastic member 41 is provided on the hook body 21, and an accommodating groove for accommodating the other end of the second elastic member 41 may also be provided on the slide groove 112.

[0043] In some embodiments, the locking mechanism also includes a lifting mechanism 50 located below the tray 10. When the tray 10 moves to the top of the lifting mechanism 50, the lifting rod of the lifting mechanism 50 extends into the slide groove 112 from the opening at the bottom of the slide groove 112 to lift the self-locking block 30 to an unlocked position; after the lifting rod moves out from the bottom of the slide groove 112, the self-locking block 30 is reset under the elastic force of the first elastic member 40. At this time, the locking hook 20 is in a locked state, that is, the locking on the product 100 of the tray 10 is achieved by relying on the first elastic member 40, and there is no need to use an additional cylinder to lock the product 100.

[0044] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0045] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] The above is a detailed introduction to a locking mechanism provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A locking mechanism, characterized in that: include: A tray (10), a locking hook (20), a self-locking block (30) and a first elastic member (40), wherein the locking hook (20) is rotatably connected to the tray (10), the self-locking block (30) is slidably connected to the tray (10), and two ends of the first elastic member (40) are respectively connected to the self-locking block (30) and the tray (10); when the self-locking block (30) is forced to move to a locking position, the locking hook (20) locks the product (100) placed on the tray (10) under the elastic force of the first elastic member (40); when the self-locking block (30) is forced to move to an unlocking position, the self-locking block (30) releases the locking hook (20).

2. The locking mechanism according to claim 1, characterized in that: The locking hook (20) comprises a hook body (21) and a hook head (22), wherein the hook head (22) is located at a side portion of one end of the hook body (21); a fixing seat (11) is provided on the tray (10), and a hook receiving groove (111) and a slide groove (112) are provided on the fixing seat (11), wherein the hook receiving groove (111) and the slide groove (112) are communicated with each other, and the hook body (21) is rotatably connected to the hook receiving groove (111), and the hook head (22) extends out of the hook receiving groove (111) when in a locked position; the self-locking block (30) is slidably connected to the slide groove (112), and a pushing portion is provided on a side of the self-locking block (30) facing the hook body (21), and the self-locking block (30) is used for driving the hook body (21) to rotate relative to the fixing seat (11) through the pushing portion.

3. The locking mechanism according to claim 2, characterized in that: The pushing portion comprises a protrusion (31) arranged on the self-locking block (30) and facing the hook body (21); a groove (23) is provided on the side of the hook body (21) facing the self-locking block (30); the inner bottom surface of the groove (23) is provided with a first inclined surface (24) inclined downwardly towards the self-locking block (30); the protrusion (31) is located in the groove (23); the self-locking block (30) is forced to move downwardly, so as to move to the unlocking position under the guidance of the first inclined surface (24); the self-locking block (30) moves upwardly under the action of the first elastic member (40), so as to push the hook body (21) to rotate through the side of the self-locking block (30) in contact with the hook body (21), so as to lock the product (100) placed on the tray (10).

4. The locking mechanism according to claim 3, characterized in that: The locking mechanism further comprises a lifting mechanism (50) and a pushing assembly, wherein the lifting mechanism (50) is located below the tray (10), and the pushing assembly is located above the tray (10), and the lifting mechanism (50) is used to lift the tray (10) and move it upward so that the pushing assembly contacts the top of the self-locking block (30), and as the tray (10) moves upward, the self-locking block (30) moves downward until it moves to the unlocking position.

5. The locking mechanism according to claim 4, characterized in that: The pushing assembly comprises a support frame (70) and a pushing member (60), wherein the support frame (70) is straddled on a conveying device for conveying the pallet (10), and the pushing member (60) is connected to the support frame (70) and corresponds to the slide groove (112) up and down.

6. The locking mechanism according to claim 3, characterized in that: A first avoidance groove (32) is provided on one side of the self-locking block (30), the first avoidance groove (32) being located below the protrusion (31), and an unlocking portion (25) corresponding to the first avoidance groove (32) is provided on the side of the lower end of the locking hook (20) facing the self-locking block (30).

7. The locking mechanism according to claim 2, characterized in that: The upper end of the slide groove (112) is closed, and the lower end is provided with an opening. The two ends of the first elastic member (40) are respectively pressed against the inner top of the slide groove (112) and the upper end of the self-locking block (30). The upper part of the self-locking block (30) and the side facing the hook body (21) are provided with a second inclined surface (33) in contact with the hook body (21). The self-locking block (30) moves downward under the elastic force of the first elastic member (40), and pushes the hook body (21) to rotate through the second inclined surface (33), so that the hook head (22) locks the product (100) placed on the tray (10); the end of the hook body (21) away from the hook head (22) and facing the side of the self-locking block (30) is pressed against the slide groove (112) through the second elastic member (41).

8. The locking mechanism according to claim 7, characterized in that: The self-locking block (30) is provided with a second avoidance groove (34) for the second elastic member (41) to pass through.

9. The locking mechanism according to claim 7, characterized in that: The hook body (21) is provided with a receiving groove for receiving one end of the second elastic member (41).

10. The locking mechanism according to any one of claims 7 to 9, characterized in that: The locking mechanism further comprises a lifting mechanism (50) located below the tray (10), wherein a lifting rod of the lifting mechanism (50) is used to extend into the slide groove (112) from an opening at the bottom of the slide groove (112) to lift the self-locking block (30) to the unlocking position.

Images