Pressing mechanism and measuring support

Abstract

The utility model discloses a hold-down mechanism and a measuring support. The hold-down mechanism comprises a sliding rod and a sliding seat sleeved on the sliding rod. A positioning pin is arranged on the sliding rod, and one end of the sliding rod is connected with a pressing component; a sliding groove matched with the positioning pin is formed in the sliding seat, the sliding groove is provided with at least two limiting points matched with the positioning pin, and different limiting points correspond to different working states of the pressing mechanism; when the positioning pin slides from one limiting point to the other limiting point along the sliding groove, the sliding rod rotates and / or moves in the axial direction of the sliding rod. In the embodiment of the utility model, the at least two limiting points on the sliding groove can correspond to different working states of the pressing mechanism, the sliding rod drives the positioning pin to slide along the sliding groove, the working states of the pressing mechanism can be switched, the structure is simple, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a pressing mechanism and a measuring bracket. Background Art

[0002] For the measurement of large components such as door assemblies, the door assemblies are usually fixed on a measuring bracket for blue light measurement.

[0003] The measuring bracket is used for rough positioning of the door assembly. When placing the door assembly on the measuring bracket, it is only necessary to ensure its stability. Different personnel may have assembly deviations when assembling the door assembly. Therefore, the measuring bracket usually needs to be pressed together with the tooling when used.

[0004] However, the existing pressing tooling has a complex structure and occupies a large space. Utility Model Content

[0005] The utility model provides a clamping mechanism and a measuring bracket, aiming to at least solve the technical problems in the prior art that the clamping tooling structure is complex and occupies a large space.

[0006] In a first aspect, an embodiment of the utility model provides a clamping mechanism, including a sliding rod and a sliding seat sleeved on the sliding rod;

[0007] A positioning pin is provided on the sliding rod, and one end of the sliding rod is connected to a pressing member;

[0008] The sliding seat is provided with a sliding groove matched with the positioning pin, and the sliding groove has at least two limit points matched with the positioning pin, and different limit points correspond to different working states of the clamping mechanism;

[0009] When the positioning pin slides along the sliding groove from one of the limit points to another limit point, the sliding rod rotates and / or generates an axial displacement along the sliding rod.

[0010] Optionally, the sliding rod includes a first rod and a second rod, the sliding seat includes a mounting seat and a seat body, and the clamping member includes a pressure head; the first rod is connected to the second rod, and the first end of the second rod away from the first rod is connected to the pressure head; the second rod passes through the seat body, the positioning pin is arranged on the second rod, the sliding groove is opened on the seat body, and the positioning pin is located in the sliding groove.

[0011] Optionally, the slide groove is in a U-shape, and comprises a first groove portion, a second groove portion, and a connecting groove portion close to the first end of the second rod, the first groove portion and the second groove portion extend in a radial direction of the second rod and are connected through the connecting groove portion, and the extending direction of the connecting groove portion is consistent with the circumferential direction of the second rod;

[0012] When the pressure head is in a non-pressing state, the positioning pin is located at an end of the first groove portion away from the connecting groove portion. When the pressure head is in a pressing state, the positioning pin is located at an end of the second groove portion away from the connecting groove portion.

[0013] Optionally, the clamping mechanism further includes a locking member, the first rod member includes a first threaded section, the mounting seat is connected to the seat body, the locking member is located on a side of the mounting seat away from the seat body, and when the pressure head is in a clamping state, the locking member contacts the mounting seat, and the internal thread of the locking member matches the first threaded section;

[0014] One end of the first rod away from the second rod is connected to a handle, and a spring is sleeved on the first rod, and the spring is located between the locking member and the handle;

[0015] When the pressure head is in a non-pressing state, the spring is in an original length state, and when the positioning pin is located in the connecting groove portion, the spring is in a compressed state.

[0016] Optionally, the first rod is connected to the second rod via a connecting block, the mounting seat includes a first side plate portion away from the seat body, the first rod passes through the first side plate portion, the connecting block and the locking member are respectively located on both sides of the first side plate portion along the extension direction of the first rod, and when the pressure head is in a clamping state, the locking member is in contact with the first side plate portion.

[0017] Optionally, the mounting seat also includes a second side plate portion arranged opposite to the first side plate portion, the second side plate portion is connected to the seat body, the first side plate portion and the second side plate portion are connected via a mounting portion, and the mounting portion is used to be detachably connected to the measuring bracket body.

[0018] Optionally, the pressure head has a pressure surface and a mounting surface which are arranged opposite to each other along a height direction of the pressure head, and an area of ​​a cross section of the pressure head gradually decreases in a direction from the mounting surface to the pressure surface in the height direction of the pressure head.

[0019] Optionally, it further comprises a mounting rod and a mounting plate, the pressure head is connected to the mounting rod, the mounting rod is connected to the mounting plate, and the mounting plate is connected to the first end of the second rod.

[0020] Optionally, the mounting plate includes a first plate portion, the first plate portion is provided with a through hole, and the mounting rod passes through the through hole;

[0021] The mounting rod has an external thread section, and two fasteners are screwed onto the mounting rod. The two fasteners are respectively located at two sides of the first plate portion along the thickness direction of the first plate portion.

[0022] In a second aspect, an embodiment of the utility model provides a measuring bracket, comprising a measuring bracket body and any one of the above-mentioned clamping mechanisms installed on the measuring bracket body.

[0023] In the embodiment of the utility model, at least two limit points on the slide slot can correspond to different working states of the clamping mechanism. The movement of the sliding rod can drive the movement of the positioning pin on the sliding rod. When the positioning pin slides from one limit point to another limit point along the slide slot, the working state of the clamping mechanism can be switched. The clamping mechanism has a simple structure and occupies a small space. When applied to the measuring bracket, it can reduce the space occupied by the measuring bracket. In addition, when the clamping mechanism is applied to the measuring bracket, it can clamp the pressed part on the measuring bracket to improve the repeatability measurement accuracy.

[0024] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of the clamping mechanism provided in the embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the front view of the clamping mechanism provided in an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the top view of the clamping mechanism provided in an embodiment of the utility model;

[0028] Figure 4 A bottom view structural schematic diagram of a clamping mechanism provided in an embodiment of the utility model;

[0029] Figure 5 A schematic diagram of the structure of a first rod member in a clamping mechanism provided in an embodiment of the utility model;

[0030] Figure 6 A schematic diagram of the three-dimensional structure of a locking member in a clamping mechanism provided in an embodiment of the utility model.

[0031] Reference numerals:

[0032] 1-first rod, 101-first rod portion, 102-first threaded segment, 103-second threaded segment, 104-third threaded segment, 2-second rod, 201-second rod portion, 202-locating pin, 3-pressing head, 301-pressing surface, 302-mounting surface, 4-seat body, 401-slide groove, 4011-first groove portion, 4012-second groove portion, 4013-connecting groove portion, 5-mounting seat, 501-first side plate portion, 502-second side plate portion, 503-mounting portion, 6-locking member, 601-internal thread, 602-spring hole, 7-handle, 8-spring, 9-connecting block, 10-mounting rod, 11-mounting plate, 1101-first plate portion, 1102-second plate portion, 12-fastener. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0034] First, refer to Figure 1 , Figure 5 and Figure 6 The embodiment of the utility model discloses a clamping mechanism, including a sliding rod and a sliding seat sleeved on the sliding rod; a positioning pin 202 is provided on the sliding rod, and a clamping member is connected to one end of the sliding rod; a sliding groove 401 matching with the positioning pin is provided on the sliding seat, and the sliding groove 401 has at least two limit points matching with the positioning pin 202, and different limit points correspond to different working states of the clamping mechanism; when the positioning pin 202 slides from one limit point to another limit point along the sliding groove 401, the sliding rod rotates and / or generates an axial displacement along the sliding rod.

[0035] Among them, the clamping mechanism can be used to clamp the door assembly. The clamping mechanism can be applied to a measuring bracket, which is specifically a blue light measuring bracket for the door assembly. The clamping component may include a pressure head 3. The pressure head 3 directly acts on the pressed part, that is, the door assembly. Different working states of the clamping mechanism may include a clamping state and a non-clamping state. When the clamping mechanism is in a clamping state, the pressure head 3 is in a clamping state. When the clamping mechanism is in a non-clamping state, the pressure head 3 is in a non-clamping state.

[0036] The shape of the slide groove 401 can be U-shaped, L-shaped, arc-shaped, etc. The slide groove 401 preferably has two limit points that match the positioning pin 202, and the two limit points correspond to the clamping state and the non-clamping state of the clamping mechanism respectively. One of the limit points can refer to Figure 1The position indicated by the arrow in D, another limit point can be referred to Figure 1 When the positioning pin 202 slides from one limit point to another limit point along the slide slot 401, the sliding rod may only rotate, or only displace along the axial direction of the sliding rod, or rotate and displace along the axial direction of the sliding rod at the same time.

[0037] In the embodiment of the utility model, at least two limit points on the slide slot can correspond to different working states of the clamping mechanism. The movement of the sliding rod can drive the movement of the positioning pin 202 on the sliding rod. When the positioning pin 202 slides from one limit point to another limit point along the slide slot 401, the working state of the clamping mechanism can be switched. The clamping mechanism has a simple structure and occupies a small space. When applied to the measuring bracket, it can reduce the space occupied by the measuring bracket. In addition, when the clamping mechanism is applied to the measuring bracket, it can clamp the pressed part on the measuring bracket to improve the repeatability measurement accuracy.

[0038] The measuring bracket includes a measuring bracket body, and the clamping mechanism can be installed on the measuring bracket body through the mounting seat 5 in the sliding seat. The measuring bracket body includes an inner plate. The existing measuring bracket has low repeatability measurement accuracy for large components such as door assemblies. In the embodiment of the utility model, the measuring bracket body adopts an inner plate positioning method. During measurement, the blue light measuring device first uses a reference ball to establish a coordinate system, measures the positioning pins and positioning surfaces on the inner plate of the measuring bracket body to ensure the accuracy of the measuring bracket body itself, and then uses the main and auxiliary positioning pins on the measuring bracket body to position the door assembly, and checks whether the door assembly fits the positioning surface of the measuring bracket body. Finally, the above-mentioned clamping mechanism is used in turn to position and fix the door assembly. The above-mentioned clamping mechanism is firmly clamped. The measurement deviation using this positioning method is within ±0.15mm, that is, the repeatability measurement accuracy can be guaranteed to be within ±0.15mm, which can improve the repeatability measurement accuracy.

[0039] In a preferred embodiment of the present invention, referring to Figure 1 , Figure 5 and Figure 6 The sliding rod includes a first rod member 1 and a second rod member 2, the sliding seat includes a mounting seat 5 and a seat body 4, the clamping member includes a pressing head 3, the first rod member 1 is connected to the second rod member 2, and the first end of the second rod member 2 away from the first rod member 1 is connected to the pressing head 3; the second rod member 2 passes through the seat body 4, the positioning pin 202 is arranged on the second rod member 2, the slide groove 401 is opened on the seat body 4, and the positioning pin 202 is located in the slide groove 401.

[0040] The first rod 1 includes a first rod portion 101. The second rod 2 includes a second rod portion 201, a locating pin 202 is mounted on the second rod portion 201, and the connection between the locating pin 202 and the second rod portion 201 can be threaded connection, welding, etc. The cross-sectional shape of the second rod portion 201 can be circular, quasi-circular, etc. The first rod portion 101 is connected to the second rod portion 201. The pressure head 3 is specifically connected to the second rod portion 201. The mounting seat 5 can be connected to the seat body 4, and the connection between the mounting seat 5 and the seat body 4 can be welding, bolt connection, etc. When the first rod 1 moves, it will drive the second rod 2 to move, and when the second rod 2 moves, the locating pin 202 thereon slides along the slide groove 401.

[0041] In this embodiment, when the second rod 2 moves, the positioning pin 202 thereon slides along the slide groove 401, and the slide groove 401 can limit the movement direction of the second rod 2, so that the second rod 2 can always drive the pressure head 3 to move to the clamping state along a fixed path, thereby ensuring the accuracy of the position of the pressure head 3 when it is in the clamping state.

[0042] Reference Figure 1 , Figure 2 and Figure 4 In a preferred embodiment of the utility model, the shape of the slide groove 401 is U-shaped, and the slide groove 401 includes a first groove portion 4011, a second groove portion 4012 and a connecting groove portion 4013 close to the first end of the second rod member 2, the first groove portion 4011 is connected to the second groove portion 4012 through the connecting groove portion 4013, and the extending direction of the connecting groove portion 4013 is consistent with the circumferential direction of the second rod member 2; when the pressure head 3 is in a non-pressing state, the positioning pin 202 is located at one end of the first groove portion 4011 away from the connecting groove portion 4013, and when the pressure head 3 is in a pressing state, the positioning pin 202 is located at one end of the second groove portion 4012 away from the connecting groove portion 4013.

[0043] Specifically, the extension direction of the first groove portion 4011 and the second groove portion 4012 are both parallel to the extension direction of the second rod 2. The extension direction of the second rod 2 can be referred to as Figure 1 The length of the first groove 4011 is preferably less than the length of the second groove 4012. When the pressure head 3 is in the non-pressing state, the pressure head 3 is in the position indicated by the arrow C, and the positioning pin 202 is in the position indicated by the arrow E. When the pressure head 3 is in the pressing state, the pressure head 3 is in the position indicated by the arrow B, and the positioning pin 202 is in the position indicated by the arrow D.

[0044] When the pressure head 3 is in a non-pressed state, the positioning pin 202 is located at one end of the first groove portion 4011 away from the connecting groove portion 4013, and the positioning pin 202 contacts the groove wall of the first groove portion 4011 away from the connecting groove portion 4013. The groove wall of the first groove portion 4011 away from the connecting groove portion 4013 can limit the movement of the positioning pin 202, thereby maintaining the pressure head 3 in a non-pressed state.

[0045] When adjusting the pressure head 3 from the non-pressing state to the pressing state, first, push the first rod 1 to drive the second rod 2 to move forward. During this process, the positioning pin 202 moves forward with the second rod 2; when the positioning pin 202 moves to the connecting groove 4013, rotate the first rod 1 to drive the second rod 2 to rotate right, so that the positioning pin 202 moves to the intersection of the connecting groove 4013 and the second groove 4012; then, make the first rod 1 drive the second rod 2 to move backward, and the positioning pin 202 moves toward the position indicated by the arrow D.

[0046] In the embodiment of the utility model, the U-shaped setting of the slide groove 401 requires the pressure head 3 to move and rotate to move from the non-pressing state to the pressing state, so that when the pressure head 3 is in the non-pressing state, it will not affect the operation of placing the pressed part on the measuring bracket body.

[0047] The clamping mechanism also includes a locking piece 6, the first rod 1 includes a first threaded section 102, the mounting seat 5 is connected to the seat body 4, and the locking piece 6 is located on the side of the mounting seat 5 away from the seat body 4; when the pressure head 3 is in a clamping state, the locking piece 6 contacts the mounting seat 5, and the internal thread 601 of the locking piece 6 cooperates with the first threaded section 102; the end of the first rod 1 away from the second rod 2 is connected to a handle 7, and a spring 8 is sleeved on the first rod 1, and the spring 8 is located between the locking piece 6 and the handle 7; when the pressure head 3 is in a non-clamping state, the spring 8 is in an original length state, and when the positioning pin 202 is located in the connecting groove 4013, the spring 8 is in a compressed state.

[0048] Specifically, the locking member 6 has an internal thread 601, and the first thread segment 102 is arranged on the first rod portion 101. The mounting seat 5 includes a first side plate portion 501 away from the seat body 4, the first rod portion 101 passes through the first side plate portion 501, and the first side plate portion 501 is provided with a first through hole for the first rod portion 101 to pass through. The cross-sectional shape of the first rod portion 101 is circular, the cross-sectional shape of the locking member 6 is annular, the shape of the first through hole is circular, the diameter of the first through hole is greater than or equal to the diameter of the first rod portion 101, and the outer diameter of the locking member 6 is greater than the diameter of the first through hole.

[0049] When the first rod 1 moves, it will drive the second rod 2 to move. When the second rod 2 moves, the positioning pin 202 thereon slides along the slide groove 401. When the pressure head 3 is in a clamping state, the locking member 6 contacts the mounting seat 5. The locking member 6 is located on the side of the mounting seat 5 away from the seat body 4, and the internal thread 601 of the locking member 6 cooperates with the first thread segment 102. At this time, the locking member 6 can limit the forward movement of the first rod 1 and the second rod 2, so that the pressure head 3 can be maintained in a clamping state, ensuring a firm clamping and avoiding the unreliable clamping caused by the forward movement of the pressure head 3, which causes the position of the pressed door assembly to deviate. It should be noted that the front and rear directions of the clamping mechanism can refer to Figure 1 The arrow in A shows the direction.

[0050] In the embodiment of the utility model, when it is necessary to compress the pressed part, the first rod 1 drives the second rod 2 to move, and then the second rod 2 drives the pressure head 3 to move, until the pressure head 3 contacts and compresses the pressed part, that is, until the pressure head 3 is in a compressed state. After the pressure head 3 compresses the pressed part, since the locking member 6 contacts the mounting seat 5, the locking member 6 is located on the side of the mounting seat 5 away from the seat body 4, and the internal thread 601 of the locking member 6 cooperates with the first thread segment 102, the locking member 6 can limit the leftward movement of the first rod 1 and the second rod 2, and then the pressure head 3 can be kept in a compressed state, ensuring a firm compression, avoiding the unreliable compression caused by the leftward movement of the pressure head 3 during compression and the deviation of the position of the pressed door assembly, so that when the compression mechanism is applied to the measuring bracket, the repeatability measurement accuracy can be improved.

[0051] One end of the first rod 101 is connected to a third threaded section 104, which is threadedly connected to the handle 7. The handle 7 provides an operator with a direct and comfortable gripping point, and the handle 7 facilitates pushing, pulling and rotating the first rod 1.

[0052] The locking member 6 is also provided with a spring hole 602, and the spring hole 602 is used for the end of the spring 8 away from the handle 7 to extend into the locking member 6. When the pressure head 3 is adjusted from the non-pressing state to the pressing state, first, the handle 7 is pushed to drive the first rod 1 and the second rod 2 to move forward against the elastic force of the spring 8. At this time, the spring 8 is in a compressed state to prevent the locking member 6 from leaning against the handle 7. In this process, the positioning pin 202 moves forward with the second rod 2; when the positioning pin 202 moves to the connecting groove 4013, the elastic force of the spring 8 reaches the maximum value; then, the handle 7 is rotated to drive the first rod 1 and the second rod 2 to rotate rightward, so that the positioning pin 202 moves to the intersection of the connecting groove 4013 and the second groove 4012; then, the handle 7 is released, the spring 8 releases its elastic force, pushes the handle 7, thereby driving the first rod 1 and the second rod 2 to move backward, and the positioning pin 202 moves toward the position indicated by the arrow D.

[0053] When adjusting the pressure head 3 from the clamping state to the non-clamping state, first adjust the locking member 6 to a position where the locking member 6 is not threadedly connected to the first threaded section 102, and then push the handle 7 to drive the first rod 1 and the second rod 2 to move forward, and the positioning pin 202 moves forward with the second rod 2. When the positioning pin 202 moves to the connecting groove 4013, the spring 8 is in a compressed state. Then, rotate the handle 7 to drive the first rod 1 and the second rod 2 to rotate left, so that the positioning pin 202 moves to the intersection of the connecting groove 4013 and the first groove 4011. Then, release the handle 7, the spring 8 releases the elastic force, pushes the handle 7, thereby driving the first rod 1 and the second rod 2 to move backward, and the positioning pin 202 moves to the position indicated by the arrow E. During the process of adjusting the pressure head 3 from the non-pressing state to the pressing state or from the pressing state to the non-pressing state, the spring 8 pushes the handle 7, thereby driving the first rod 1 and the second rod 2 to move backward. There is no need for the operator to manually push the handle 7, making the operation more convenient.

[0054] Reference Figure 1 and Figure 3 In a preferred embodiment of the utility model, the first rod member 1 is connected to the second rod member 2 through a connecting block 9, the mounting seat 5 includes a first side plate portion 501 away from the seat body 4, the first rod member 1 passes through the first side plate portion 501, the connecting block 9 and the fastener 12 are respectively located on both sides of the first side plate portion 501 along the extension direction of the first rod member 1, and when the pressure head 3 is in a clamping state, the locking member 6 is in contact with the first side plate portion 501.

[0055] Specifically, when the pressure head 3 is in a clamping state, the connecting block 9 can also contact the first side plate portion 501. One end of the first rod portion 101 is also connected to the second threaded section 103, and the second threaded section 103 is threadedly connected to the connecting block 9. The second rod 2 is threadedly connected to the connecting block 9. When the first rod 1 is connected to the second rod 2 through the connecting block 9, the movement of the first rod 1 and the second rod 2 is synchronized, so that the first rod 1 can drive the second rod 2 to move synchronously, avoiding relative movement between the first rod 1 and the second rod 2. The extension direction of the first rod 1 can refer to Figure 1 The connecting block 9 also plays a certain role in limiting the position. The first rod 1 can only move backward until the connecting block 9 contacts the first side plate 501, that is, the pressing head 3 can only move backward until the connecting block 9 contacts the first side plate 501. By setting the connecting block 9, it is possible to avoid the pressing head 3 from moving backward too much, thereby avoiding over-pressure of the pressing head 3, thereby avoiding a large deformation of the pressed door assembly caused by over-pressure of the pressing head 3, and reducing the deformation of the pressed door assembly.

[0056] Reference Figure 3In a preferred embodiment of the utility model, the mounting seat 5 further includes a second side plate portion 502 arranged opposite to the first side plate portion 501, the second side plate portion 502 is connected to the seat body 4, the first side plate portion 501 and the second side plate portion 502 are connected via a mounting portion 503, and the mounting portion 503 is used to be detachably connected to the measurement bracket body. The shape of the mounting seat 5 is U-shaped. The arrangement of the mounting portion 503 for detachably connecting to the measurement bracket body facilitates the disassembly of the clamping mechanism.

[0057] Reference Figure 2 In a preferred embodiment of the utility model, the pressure head 3 has a pressure surface 301 and a mounting surface 302 which are arranged relatively along the height direction of the pressure head. In the height direction of the pressure head, the cross-sectional area of ​​the pressure head 3 gradually decreases from the mounting surface 302 to the pressure surface 301.

[0058] When the pressing head 3 is mounted on the second rod 2, the height direction of the pressing head 3 is parallel to the front-rear direction of the pressing mechanism. The cross-sectional shape of the pressing head 3 may be circular. The pressing surface 301 of the pressing head 3 is also the surface of the pressing head 3 used to press the pressed part. The area of ​​the pressing surface 301 of the pressing head 3 is smaller than the area of ​​the mounting surface 302, that is, the area of ​​the pressing surface 301 is smaller, thereby reducing the contact area between the pressing head 3 and the pressed part, thereby reducing the deformation degree of the pressed door assembly.

[0059] Reference Figure 1 In a preferred embodiment of the utility model, the pressing mechanism further includes a mounting rod 10 and a mounting plate 11, the pressing head 3 is connected to the mounting rod 10, the mounting rod 10 is connected to the mounting plate 11, and the mounting plate 11 is connected to the first end of the second rod 2. The mounting plate 11 may be L-shaped. The connection between the mounting plate 11 and the second rod 2 may be a threaded connection. The connection between the pressing head 3 and the second rod 2 can be achieved through the mounting rod 10 and the mounting plate 11.

[0060] Reference Figure 2 In a preferred embodiment of the utility model, the mounting plate 11 includes a first plate portion 1101, a through hole is formed on the first plate portion 1101, and the mounting rod 10 passes through the through hole; the mounting rod 10 has an external thread section, and two fasteners 12 are screwed on the mounting rod 10, and the two fasteners 12 are respectively located on both sides of the first plate portion 1101 along the thickness direction of the first plate portion 1101.

[0061] Specifically, the mounting plate 11 further includes a second plate portion 1102 connected to the first plate portion 1101, and the first plate portion 1101 is preferably perpendicular to the second plate portion 1102. The fastener 12 may be a nut. The mounting rod 10 is threaded with two fasteners 12, and the two fasteners 12 are respectively arranged on both sides of the first plate portion 1101 along the thickness direction of the first plate portion 1101, which is conducive to adjusting the front and rear position of the pressure head 3 relative to the first plate portion 1101.

[0062] The assembly process of the above-mentioned clamping mechanism can be as follows: first assemble the seat body 4 and the mounting seat 5 together, then pass the second rod portion 201 through the seat body 4 and the second side plate portion 502 in the mounting seat 5, and pass the first rod member 1 through the first side plate portion 501 in the mounting seat 5, then connect the first rod member 1 and the second rod member 2 through the connecting block 9, then install the locking member 6, the spring 8 and the handle 7 on the first rod member 1 in sequence, and install the mounting plate 11, the mounting rod 10 and the pressure head 3 on the first end of the second rod member 2, then install the positioning pin 202 on the second rod portion 201, and make the positioning pin 202 located in the slide groove 401.

[0063] After the clamping mechanism is assembled, the mounting seat 5 can be mounted on the measuring bracket body. The number and position of the clamping mechanism mounted on the measuring bracket body are determined according to actual positioning requirements.

[0064] The working principle of the above-mentioned clamping mechanism can be:

[0065] The pressure head 3 is in a non-pressing state, that is, Figure 1 When the position is indicated by the arrow C, the positioning pin 202 is at the position indicated by the arrow E, the first threaded section 102 is located on the left side of the locking member 6, the locking member 6 does not lock the first rod 1, the spring 8 is in a natural state, and the pressure head 3 cannot play a pressing role on the door assembly;

[0066] When adjusting the pressure head 3 from the non-pressing state to the pressing state, first, push the handle 7 to drive the first rod 1 and the second rod 2 to move forward against the elastic force of the spring 8. At this time, the spring 8 is in a compressed state to prevent the locking member 6 from leaning against the handle 7. In this process, the positioning pin 202 moves forward with the second rod 2; when the positioning pin 202 moves to the connecting groove 4013, the elastic force of the spring 8 reaches the maximum value; then, rotate the handle 7 to drive the first rod 1 and the second rod 2 to rotate rightward, so that the positioning pin 202 moves to the intersection of the connecting groove 4013 and the second groove 4012; then, release the handle 7. Hand 7, spring 8 releases elastic force, pushes handle 7, thereby driving the first rod 1 and the second rod 2 to move backward, and the positioning pin 202 moves toward the position indicated by arrow D; when the connecting block 9 is close to the first side plate 501, the first threaded section 102 is close to the internal thread 601 in the locking member 6. At this time, the locking member 6 is rotated and the first rod 1 is pulled backward to make the first threaded section 102 threadedly cooperate with the internal thread 601 in the locking member 6. At this time, the positions of the first rod 1 and the second rod 2 are fixed, and the pressing head 3 is in the position indicated by arrow B, that is, the pressing head 3 is in a clamping state, thereby playing the role of clamping the door assembly.

[0067] In a second aspect, the embodiment of the utility model further discloses a measuring bracket, comprising a measuring bracket body and any one of the above-mentioned clamping mechanisms installed on the measuring bracket body. The number and position of the clamping mechanisms installed on the measuring bracket body are determined according to actual positioning requirements.

[0068] Since the measuring bracket includes the above-mentioned clamping mechanism, it also has the beneficial effects of the above-mentioned clamping mechanism, which will not be described in detail here.

[0069] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0070] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A clamping mechanism, characterized in that: It comprises a sliding rod and a sliding seat sleeved on the sliding rod; A positioning pin is provided on the sliding rod, and one end of the sliding rod is connected to a pressing member; The sliding seat is provided with a sliding groove matched with the positioning pin, and the sliding groove has at least two limit points matched with the positioning pin, and different limit points correspond to different working states of the clamping mechanism; When the positioning pin slides along the sliding groove from one of the limit points to another limit point, the sliding rod rotates and / or generates displacement along the axial direction of the sliding rod.

2. The clamping mechanism according to claim 1, characterized in that: The sliding rod includes a first rod member and a second rod member, the sliding seat includes a mounting seat and a seat body, and the clamping member includes a pressure head; the first rod member is connected to the second rod member, and the first end of the second rod member away from the first rod member is connected to the pressure head; the second rod member passes through the seat body, the positioning pin is arranged on the second rod member, the sliding groove is opened on the seat body, and the positioning pin is located in the sliding groove.

3. The clamping mechanism according to claim 2, characterized in that: The slide groove is in a U-shape, and comprises a first groove portion, a second groove portion, and a connecting groove portion close to the first end of the second rod, the first groove portion and the second groove portion extend in the radial direction of the second rod and are connected through the connecting groove portion, and the extending direction of the connecting groove portion is consistent with the circumferential direction of the second rod; When the pressure head is in a non-pressing state, the positioning pin is located at an end of the first groove portion away from the connecting groove portion. When the pressure head is in a pressing state, the positioning pin is located at an end of the second groove portion away from the connecting groove portion.

4. The clamping mechanism according to claim 3, characterized in that: The clamping mechanism further includes a locking member, the first rod member includes a first threaded section, the mounting seat is connected to the seat body, the locking member is located on a side of the mounting seat away from the seat body, and when the pressure head is in a clamping state, the locking member contacts the mounting seat, and the internal thread of the locking member matches the first threaded section; One end of the first rod away from the second rod is connected to a handle, and a spring is sleeved on the first rod, and the spring is located between the locking member and the handle; When the pressure head is in a non-pressing state, the spring is in an original length state, and when the positioning pin is located in the connecting groove portion, the spring is in a compressed state.

5. The clamping mechanism according to claim 4, characterized in that: The first rod is connected to the second rod through a connecting block, the mounting seat includes a first side plate portion away from the seat body, the first rod passes through the first side plate portion, the connecting block and the locking member are respectively located on both sides of the first side plate portion along the extension direction of the first rod, and when the pressure head is in a clamping state, the locking member is in contact with the first side plate portion.

6. The clamping mechanism according to claim 5, characterized in that: The mounting seat also includes a second side plate portion arranged opposite to the first side plate portion, the second side plate portion is connected to the seat body, the first side plate portion and the second side plate portion are connected via a mounting portion, and the mounting portion is used to be detachably connected to the measurement bracket body.

7. The clamping mechanism according to any one of claims 2 to 4, characterized in that: The pressure head has a pressure surface and a mounting surface which are arranged opposite to each other along the height direction of the pressure head. In the height direction of the pressure head, the cross-sectional area of ​​the pressure head gradually decreases in the direction from the mounting surface to the pressure surface.

8. The clamping mechanism according to any one of claims 2 to 4, characterized in that: It also includes a mounting rod and a mounting plate, the pressure head is connected to the mounting rod, the mounting rod is connected to the mounting plate, and the mounting plate is connected to the first end of the second rod.

9. The clamping mechanism according to claim 8, characterized in that: The mounting plate comprises a first plate portion, the first plate portion is provided with a through hole, and the mounting rod passes through the through hole; The mounting rod has an external thread section, and two fasteners are screwed onto the mounting rod. The two fasteners are respectively located at two sides of the first plate portion along the thickness direction of the first plate portion.

10. A measuring bracket, characterized in that: The measuring bracket comprises a measuring bracket main body and a clamping mechanism according to any one of claims 1 to 9 installed on the measuring bracket main body.

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