A latch-type quick clamp with self-locking mechanism

Abstract

This utility model discloses a latch-type quick clamp with self-locking, comprising: a first base, a second base, a movable handle, and a first bolt. The first base and the second base are perpendicular / inclined to each other. It also includes a self-locking structure disposed on the movable handle for locking the handle. The self-locking structure includes a latching member with one end hinged to the movable handle for engaging with the first base, and an elastic component disposed on the movable handle for pushing the latching member to lock. This utility model adds a self-locking structure to the movable handle, that is, the elastic component pushes against the latching member to lock the movable handle, adding an extra locking layer. This effectively prevents the first bolt from disengaging from the second base due to accidental contact or high-frequency vibration of the movable handle. It will not loosen even after prolonged use, effectively improving overall stability and making it suitable for widespread application in various latch-type clamp mechanisms.

Description

Technical fields:

[0001] This utility model relates to the field of clamping technology, and specifically to a latch-type quick clamp with self-locking. Background technology:

[0002] Manual clamps are mechanical devices operated manually to position equipment or objects. Sometimes called quick clamps, they are commonly used in welding, jig, and mold-making processes. They are generally used in batch production when workpieces need to be positioned and clamped. They are basically classified as: horizontal clamps, vertical clamps, push-pull latch clamps, linear motion clamps, precision clamps, and compression clamps.

[0003] The function of clamps is to clamp and fix parts placed on gauges and fixtures, prevent the parts from moving freely, and ensure that the parts are always in a reasonable position during measurement or operation, thereby increasing the accuracy of part inspection.

[0004] Currently available latch-type clamps on the market use only one locking structure. For example, Chinese utility model patent application CN204277818U discloses a latch-type quick clamp, which includes a retaining ring part and a locking part. The locking part includes a locking base with a fixing hole and a locking plate extending upward along an arc from one side of the locking base; and the retaining ring part includes a retaining ring base with a fixing hole, a handle connected to the movable shaft of the baffles extending upward from both sides of the retaining ring base, and a rotating shaft with a threaded hole in the middle of the handle. The retaining ring is provided in the threaded hole, and the retaining ring includes a threaded straight rod at one end that matches the threaded hole, and a clamping ring at the other end.

[0005] However, this existing bolt-type quick clamp still has the following shortcomings:

[0006] In simple terms, this technical solution achieves locking by fastening the buckle to the locking mechanism. However, it only has one locking structure, which results in insufficient security. During prolonged use or in cases of accidental contact or high-frequency vibration, the buckle may accidentally come loose, affecting the stability of the overall structure. In addition, the buckle base and the locking base are on the same plane with no angle between them, making it difficult to apply in locking environments with angles.

[0007] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a latch-type quick clamp with self-locking.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a latch-type quick clamp with self-locking, comprising: a first base and a second base mounted on a machine tool, a movable handle with one end hinged to the first base, and a first bolt with one end hinged to the movable handle for engaging and locking with the second base, wherein the first base and the second base are perpendicular / inclined to each other, and further comprising: a self-locking structure disposed on the movable handle for locking the movable handle; the self-locking structure includes a locking member with one end hinged to the movable handle for engaging and locking with the first base, and an elastic component disposed on the movable handle for pushing the locking member to lock.

[0010] Furthermore, in the above technical solution, a first hinge hole is provided on the movable handle, and the first bolt body is hinged to the first hinge hole of the movable handle through a first hinge member. The upper end of the first bolt body is provided with a first external thread section and a second external thread section.

[0011] Furthermore, in the above technical solution, the first hinge member has a first through hole and a second through hole at both ends, the first external thread section passes through the first through hole and is locked by two first nuts, and the second external thread section passes through the second through hole and is locked by two second nuts.

[0012] Furthermore, in the above technical solution, the first base is provided with a second hinge hole, and the movable handle is hinged to the second hinge hole of the first base through the second hinge member; the first hinge member is fitted with an external toothed cylinder in the middle, and correspondingly, the inner wall of the first hinge hole is provided with internal teeth, so that when the movable handle is turned, the first hinge member can be driven to rotate around the second hinge member as the rotation center axis.

[0013] Furthermore, in the above technical solution, the first base is provided with a stop pin, the lower end of the latching member is protruding and formed with a locking buckle for fastening to the stop pin, and the elastic component is a torsion spring; the latching member is also provided with a first pin for the torsion spring to push against, and a third hinge hole is opened on the movable handle, and the latching member is hinged to the third hinge hole of the movable handle through the third hinge member.

[0014] Furthermore, in the above technical solution, the torsion spring includes a spring body segment that is spirally shaped and sleeved on the third hinge member, a first abutting segment integrally formed with the spring body segment and abutting against the first hinge member, and a second abutting segment integrally formed with the spring body segment and abutting against the first pin.

[0015] Furthermore, in the above technical solution, the first bolt is made of metal and is U-shaped; the second base has a protruding first locking part for fastening the first bolt.

[0016] Furthermore, in the above technical solution, the movable handle is provided with a prying part that facilitates prying by the human hand.

[0017] Furthermore, in the above technical solution, the first base has a first extension edge and a second extension edge extending from both sides. The first extension edge has at least two first positioning holes for connecting with the outside, and the second extension edge has at least two second positioning holes for connecting with the outside. The second base has at least two third positioning holes for connecting with the outside in the middle.

[0018] Furthermore, in the above technical solution, the locking component is formed with a blocking part for blocking the movable handle.

[0019] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: In this utility model, by adding a self-locking structure to the movable handle, that is, by using an elastic component to push against the locking element to lock the movable handle, an additional locking structure is added, which can effectively prevent the first bolt from dislodging from the second base due to accidental contact or high-frequency vibration of the movable handle. It will not loosen even after long-term use, effectively improving the overall stability and making it suitable for widespread application in various latch-type clamp mechanisms. Furthermore, compared with the existing structure, in this utility model, there is an angle between the first bolt and the movable handle, and the first bolt is hinged to one end of the movable handle. This allows the first bolt to move and lock when the movable handle is turned, enabling locking even for mutually perpendicular or inclined objects. Attached image description:

[0020] Figure 1 This is a schematic diagram of the locked state of this utility model;

[0021] Figure 2 This is a schematic diagram of the unlocked state of this utility model;

[0022] Figure 3 This is a schematic diagram of the usage state of this utility model;

[0023] Figure 4 This is a schematic diagram of the movable handle in this utility model;

[0024] Figure 5 This is a schematic diagram of the torsion spring in this utility model;

[0025] Figure 6 This is a structural schematic diagram of the locking component in this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the first base body in this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the first hinge member in this utility model. Detailed implementation method:

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] See Figures 1 to 8 As shown, a latch-type quick clamp with self-locking features includes: a first base 1 and a second base 2 mounted on a machine tool; a movable handle 3 with one end hinged to the first base 1; and a first bolt 4 with one end hinged to the movable handle 3 for engaging and locking with the second base 2. The first base 1 and the second base 2 are perpendicular / inclined to each other. The clamp also includes: a self-locking structure 5 disposed on the movable handle 3 for locking the movable handle 3; the self-locking structure 5 includes a locking member 51 with one end hinged to the movable handle 3 for engaging and locking with the first base 1, and an elastic component disposed on the movable handle 3 for pushing the locking member 51 to lock.

[0030] In this invention, a self-locking structure 5 is added to the movable handle 3. This structure, where an elastic component pushes against the locking element 51 to lock the movable handle 3, adds an extra locking layer. This effectively prevents the first bolt 4 from dislodging from the second base 2 due to accidental contact or high-frequency vibration. It also prevents loosening over extended use, significantly improving overall stability and making it suitable for application in various latch-type clamp mechanisms. Furthermore, compared to existing structures, this invention features an angle between the first bolt 4 and the movable handle 3, with the first bolt 4 hinged to one end of the movable handle 3. This allows the first bolt 4 to move and lock when the movable handle 3 is turned, enabling locking even for perpendicular or inclined objects.

[0031] The movable handle 3 has a first hinge hole 31. The first bolt 4 is hinged to the first hinge hole 31 of the movable handle 3 via a first hinge member 61. The upper end of the first bolt 4 is provided with a first external thread section 41 and a second external thread section 42. Here, there is an included angle between the first bolt 4 and the movable handle 3, and the first bolt 4 is hinged to one end of the movable handle 3 via the first hinge member 61, so that when the movable handle 3 is turned, the first bolt 4 can be driven to move up and down to achieve locking.

[0032] The first hinge member 61 has a first through hole 611 and a second through hole 612 at both ends. The first external threaded section 41 passes through the first through hole 611 and is locked by two first nuts 613. The second external threaded section 42 passes through the second through hole 612 and is locked by two second nuts 614. Here, the length of the first bolt 4 can be adjusted by the first nuts 613 and the second nuts 614 to adjust the tightness of the first bolt 4 according to the actual required tightness.

[0033] The first base 1 has a second hinge hole 120, and the movable handle 3 is hinged to the second hinge hole 120 of the first base 1 through the second hinge member 62. A sleeve 65 is fitted in the middle of the first hinge member 61. The sleeve 65 has external teeth 651 distributed around its periphery. Correspondingly, the inner wall of the first hinge hole 31 has internal teeth 311, so that when the movable handle 3 is turned, the first hinge member 61 can be driven to rotate around the second hinge member 62 as the rotation center axis. The locking member 51 has a blocking part 515 formed on it to block the movable handle 3.

[0034] The first base 1 is provided with a stop pin 13, and the lower end of the locking member 51 protrudes to form a locking buckle 512 for fastening to the stop pin 13. The elastic component is a torsion spring 52. The locking member 51 is also provided with a first pin 55 for the torsion spring 52 to push against. The movable handle 3 is provided with a third hinge hole 303, and the locking member 51 is hinged to the third hinge hole 303 of the movable handle 3 through a third hinge member 56. Here, in conjunction with Figure 3 As shown, when unlocking is required, a certain force is applied to push the blocking part 515 of the latch 51 upwards, so that the locking part 512 is completely disengaged from the stop pin 13. Further, the movable handle 3 is lifted upwards, causing the first hinge 61 of the movable handle 3 to rotate around the second hinge 62 as the rotation center axis, thereby driving the first bolt 4 downwards and finally completing the unlocking. When locking is required, simply fasten the first bolt 4 onto the first locking part 201 of the second base 2. Further, press down the movable handle 3 and apply a certain force to fasten the locking part 512 of the latch 51 onto the stop pin 13, thus completing the locking. After locking, the movable handle 3 will not be accidentally disengaged due to vibration, effectively improving overall stability.

[0035] The torsion spring 52 includes a spiral spring body section 521 sleeved on the third hinge member 56, a first abutting section 522 integrally formed with the spring body section 521 and abutting against the first hinge member 61, and a second abutting section 523 integrally formed with the spring body section 521 and abutting against the first pin 55.

[0036] Preferably, the first bolt 4 is made of metal and is U-shaped; the second base 2 has a first locking part 201 protruding for fastening the first bolt 4.

[0037] The movable handle 3 is provided with a prying part 301 that facilitates prying by the human hand.

[0038] The first base 1 has a first extension 110 and a second extension 122 extending from both sides. The first extension 110 has at least two first positioning holes 111 for connecting with the outside, and the second extension 122 has at least two second positioning holes 121 for connecting with the outside. The second base 2 has at least two third positioning holes 23 for connecting with the outside in the middle.

[0039] In summary, this invention adds a self-locking structure 5 to the movable handle 3. This structure, where an elastic component pushes against the locking element 51 to lock the movable handle 3, adds an extra locking layer. This effectively prevents the first bolt 4 from dislodging from the second base 2 due to accidental contact or high-frequency vibration. It also prevents loosening over extended use, significantly improving overall stability and making it suitable for application in various latch-type clamp mechanisms. Furthermore, compared to existing structures, this invention features an angle between the first bolt 4 and the movable handle 3, with the first bolt 4 hinged to one end of the movable handle 3. This allows the first bolt 4 to move and lock when the movable handle 3 is turned, enabling locking even for perpendicular or inclined objects.

[0040] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A latch-type quick-release clamp with self-locking function, comprising: A first base (1), a second base (2), a movable handle (3) hinged at one end to the first base (1), and a first bolt (4) hinged at one end to the movable handle (3) for engaging and locking with the second base (2) are mounted on a machine tool. The first base (1) and the second base (2) are perpendicular / inclined to each other. The machine tool is characterized by... It also includes: a self-locking structure (5) disposed on the movable handle (3) and used to lock the movable handle (3); The self-locking structure (5) includes a latch (51) with one end hinged to the movable handle (3) for engaging and locking with the first base (1) and an elastic component disposed on the movable handle (3) for pushing the latch (51) to lock.

2. A latch-type quick clamp with self-locking mechanism according to claim 1, characterized in that: The movable handle (3) is provided with a first hinge hole (31), and the first bolt (4) is hinged to the first hinge hole (31) of the movable handle (3) through the first hinge member (61). The upper end of the first bolt (4) is provided with a first external thread section (41) and a second external thread section (42).

3. A latch-type quick clamp with self-locking mechanism according to claim 2, characterized in that: The first hinge (61) has a first through hole (611) and a second through hole (612) at both ends. The first external thread section (41) passes through the first through hole (611) and is locked by two first nuts (613). The second external thread section (42) passes through the second through hole (612) and is locked by two second nuts (614).

4. A latch-type quick clamp with self-locking mechanism according to claim 3, characterized in that: The first base (1) is provided with a second hinge hole (120), and the movable handle (3) is hinged to the second hinge hole (120) of the first base (1) through the second hinge member (62); a sleeve (65) is sleeved in the middle of the first hinge member (61), and the sleeve (65) is provided with external teeth (651) around its body. Correspondingly, the inner wall of the first hinge hole (31) is provided with internal teeth (311), so that when the movable handle (3) is turned, the first hinge member (61) can be driven to rotate around the second hinge member (62) as the rotation center axis.

5. A latch-type quick clamp with self-locking mechanism according to claim 1, characterized in that: The first base (1) is provided with a stop pin (13), and the lower end of the latch (51) is formed with a locking buckle (512) for fastening to the stop pin (13). The elastic component is a torsion spring (52). The latch (51) is also provided with a first pin (55) for the torsion spring (52) to push against. The movable handle (3) is provided with a third hinge hole (303). The latch (51) is hinged to the third hinge hole (303) of the movable handle (3) through the third hinge (56).

6. A latch-type quick clamp with self-locking mechanism according to claim 5, characterized in that: The torsion spring (52) includes a spiral spring body segment (521) sleeved on the third hinge (56), a first abutting segment (522) integrally formed with the spring body segment (521) and abutting against the first hinge (61), and a second abutting segment (523) integrally formed with the spring body segment (521) and abutting against the first pin (55).

7. A latch-type quick clamp with self-locking mechanism according to claim 1, characterized in that: The first bolt (4) is made of metal and is U-shaped; the second base (2) has a first locking part (201) protruding out for the first bolt (4) to be fastened.

8. A latch-type self-locking quick clamp according to any one of claims 1-7, characterized in that: The movable handle (3) is provided with a prying part (301) that facilitates prying by the human hand.

9. A latch-type self-locking quick clamp according to any one of claims 1-7, characterized in that: The first base (1) has a first extension edge (110) and a second extension edge (122) extending from both sides. The first extension edge (110) has at least two first positioning holes (111) for connecting with the outside, and the second extension edge (122) has at least two second positioning holes (121) for connecting with the outside. The second base (2) has at least two third positioning holes (23) for connecting with the outside in the middle.

10. A latch-type quick-release clamp with self-locking mechanism according to any one of claims 1-7, characterized in that: The latch (51) has a blocking part (515) formed on it for blocking the movable handle (3).

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