CN214200458U

CN214200458U - Knob switch dynamometry anchor clamps

Info

Publication number: CN214200458U
Application number: CN202120393732.7U
Authority: CN
Inventors: 李奇; 田杨; 孙梨; 王圣杰; 刘禹
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-09-14
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to the technical field of a force measuring aid device, and discloses a knob switch force measuring clamp, which comprises a bracket; the device comprises a pre-tightening piece, a force measuring device and a control device, wherein the pre-tightening piece is arranged on one side of a bracket at an adjustable interval along a first direction, and one end of the pre-tightening piece, which is far away from the bracket, is provided with a force measuring position for connecting the force measuring device; the clamping jaw is hinged to the support and arranged around a central shaft parallel to the first direction, the rotating axis of the clamping jaw is perpendicular to the first direction, the first end of the clamping jaw is located between the preload piece and the support, and the second end of the clamping jaw is located on one side, away from the preload piece, of the support; when the distance between the pre-tightening piece and the support is shortened, the pre-tightening piece can slide to abut against each first end, so that each second end can do clamping knob action, the distance between each second end and the central shaft is equal all the time, the torque testing device has the advantages of being simple and convenient to operate, and capable of guaranteeing the coaxiality of the torque part when the torque part is clamped, and further improving the accuracy of subsequent torque testing.

Description

Knob switch dynamometry anchor clamps

Technical Field

The utility model relates to a dynamometry helps device technical field, especially relates to a knob switch dynamometry anchor clamps.

Background

With the development of automotive electronic technology, the requirements of drivers on vehicle accessories are increasingly increased, and the operation hand feeling of the vehicle-mounted knob switch becomes one of the key points concerned by passengers.

During production, torque test needs to be carried out on the knob part of the knob switch, so that whether the knob switch can meet the use requirement is detected. During testing, some existing knob switch force measuring clamps can be fixed on the knob part of the knob switch, and then the moment testing device is matched to complete the moment testing of the knob part of the knob switch. For example, chinese patent No. CN102865956B discloses an automotive knob switch clamp which can be used for measuring force of a knob switch. However, in this type of clamp, the knob portion is fastened in the knob portion insertion hole of the knob type switch clamp by screwing a plurality of fastening members (i.e., fastening bolts), so that the operation is complicated and laborious, the knob portion is easily displaced in the knob portion insertion hole of the knob type switch clamp, it is difficult to ensure the coaxiality between the automotive knob type switch clamp and the knob portion, and the subsequent torque testing accuracy is affected by the eccentricity of the knob type switch clamp.

Therefore, it is desirable to provide a force measuring clamp for a rotary switch, which is simple and convenient to operate, and can ensure the coaxiality with a knob portion when the knob portion is clamped, thereby improving the precision of subsequent torque testing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a knob switch dynamometry anchor clamps, its easy operation is convenient, and when pressing from both sides tight knob portion, can guarantee with the axiality of knob portion, and then improve the precision of follow-up moment test.

To achieve the purpose, the utility model adopts the following technical proposal:

a rotary switch dynamometric clamp, comprising:

a support;

the device comprises a pre-tightening piece, a force measuring device and a control device, wherein the pre-tightening piece is arranged on one side of a bracket at an adjustable interval along a first direction, and one end of the pre-tightening piece, which is far away from the bracket, is provided with a force measuring position for connecting the force measuring device;

at least three jaws hinged to said frame and arranged around a central axis parallel to said first direction, the axis of rotation of said jaws being perpendicular to said first direction, the first ends of said jaws being located between said preload member and said frame, the second ends of said jaws being located on the side of said frame remote from said preload member;

when the distance between the pre-tightening piece and the bracket is reduced, the pre-tightening piece can be slidably pressed against the first ends, so that the second ends perform clamping knob action, and the distances between the second ends and the central shaft are always equal.

Optionally, a pretensioning connecting shaft extending along the first direction is fixedly arranged on the bracket, and the pretensioning member is movably inserted onto the pretensioning connecting shaft along the first direction.

Optionally, the pre-tightening connecting shaft is a threaded rod, and the pre-tightening piece is screwed on the pre-tightening connecting shaft.

Optionally, the bracket is of a plate-shaped structure, a plurality of mounting grooves are formed in the bracket, and the clamping jaws are arranged in the mounting grooves in a one-to-one manner.

Optionally, the preload member comprises:

a cone section having a cone end surface capable of sliding against the first end, the cone end surface having an axis coaxial with the central axis.

Optionally, the preload member further comprises:

and the holding section is fixedly connected to one end of the cone section, which is far away from the support, and is in a cylindrical shape coaxial with the cone section.

Optionally, the curved side wall of the gripping section is provided with anti-slip lines.

Optionally, the clamping jaw is of a long rod-shaped structure, and the clamping jaw is hinged to the support through a rotating pin shaft.

Optionally, the first end and/or the second end are rounded.

Optionally, the number of the clamping jaws is three, and the three clamping jaws are uniformly arranged around the central shaft in a circular array.

The utility model has the advantages that:

the utility model discloses a force measuring position for connecting a force measuring device is arranged at one end of a preload piece of a knob switch force measuring clamp, which is far away from a bracket; the clamping jaws are hinged to the support and arranged around a central shaft parallel to the first direction, the rotating axes of the clamping jaws are perpendicular to the first direction, the first ends of the clamping jaws are located between the preload piece and the support, and the second ends of the clamping jaws are located on one side, away from the preload piece, of the support; when the distance between the pre-tightening piece and the support is shortened, the pre-tightening piece can slide to abut against each first end, so that each second end can do clamping knob action, the distance between each second end and the central shaft is always equal, and when the second end clamps the knob part of the knob switch, the central shaft and the knob part can be always ensured to be coaxial, clamping deviation can not occur, and the accuracy of the force measuring device in moment test through force measuring position connection can not be influenced, the improvement of the precision of subsequent moment test is facilitated, and the operation is simple and convenient.

Drawings

Fig. 1 is a schematic structural view of the knob switch force measuring clamp provided by the present invention.

In the figure:

x-a first direction; o-central axis;

1-a scaffold;

2-pre-tightening piece; 21-a cone segment; 22-a holding section;

3-clamping jaws; 31-a first end; 32-a second end;

4-pre-tightening the connecting shaft;

and 5, rotating the pin shaft.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides a force measuring clamp for a rotary switch, which is simple and convenient to operate, and can ensure the coaxiality with a knob portion (not shown in the figure) when clamping the knob portion of the rotary switch, thereby improving the precision of the subsequent torque test. In the figure, X denotes a first direction, O denotes a central axis, and the central axis O is parallel to the first direction X. The knob switch force measuring clamp comprises a support 1, a preload piece 2 and at least three clamping jaws 3. The preload piece 2 is arranged on one side of the bracket 1 at an adjustable interval along the first direction, and one end of the preload piece 2, which is far away from the bracket 1, is provided with a force measuring position (not shown in the figure) for connecting a force measuring device (not shown in the figure). At least three jaws 3 are hinged to support 1 and are arranged around a central axis O parallel to first direction X, the axis of rotation of jaws 3 being perpendicular to first direction X, first end 31 of jaws 3 being located between preload member 2 and support 1, and second end 32 of jaws 3 being located on the side of support 1 remote from preload member 2. When the distance between the preload member 2 and the bracket 1 is reduced, the preload member 2 can slide to press the first ends 31, so that the second ends 32 perform the action of the clamping knobs, and the distances between the second ends 32 and the central axis O are always equal. It should be noted that, the force measuring position is a force measuring groove, the force measuring end of the force measuring device can be connected to the force measuring groove for measuring force, the force applying direction of the force measuring device is perpendicular to the central axis O and perpendicular to the connecting line of the force measuring end of the force measuring device and the central axis O, and the force measuring position and the connection with the force measuring end of the force measuring device are prior art.

Because the preload part 2 of the knob switch force measuring clamp is provided with a force measuring position for connecting a force measuring device at one end far away from the bracket 1; at least three jaws 3 are hinged to support 1 and are arranged around a central axis O parallel to first direction X, the axis of rotation of jaws 3 being perpendicular to first direction X, first end 31 of jaws 3 being located between preload member 2 and support 1, and second end 32 of jaws 3 being located on the side of support 1 remote from preload member 2. When the distance between the pre-tightening piece 2 and the bracket 1 is shortened, the pre-tightening piece 2 can slide to abut against each first end 31, so that each second end 32 acts as a clamping knob, the distance between each second end 32 and the central shaft O is always equal, and when the second end 32 clamps the knob part of the knob switch, the central shaft O and the knob part can be always ensured to be coaxial, clamping deviation can not occur, and the accuracy of connecting the force measuring device through the force measuring position to carry out torque testing can not be influenced, the improvement of the precision of subsequent torque testing is facilitated, and the operation is simple and convenient.

Further, as shown in fig. 1, in this embodiment, a pretensioning connecting shaft 4 extending along the first direction X is fixedly disposed on the bracket 1, and the pretensioning member 2 is movably inserted into the pretensioning connecting shaft 4 along the first direction X. Specifically, pretension connecting axle 4 is the threaded rod, and 2 screw threads of pretension piece connect soon on pretension connecting axle 4, and then can adjust the interval of pretension piece 2 and support 1 along first direction through the mode of rotatory rotation pretension piece 2, and then can control the clamping action of jack catch 3 through pretension piece 2.

Specifically, as shown in fig. 1, in the present embodiment, the bracket 1 is a plate-shaped structure, a plurality of mounting grooves (not shown in the figure) are formed on the bracket 1, and the jaws 3 are respectively inserted into the mounting grooves one by one, so that the structure is simple and the design cost is low. The clamping jaw 3 is of a long rod-shaped structure, and the clamping jaw 3 is correspondingly hinged in the mounting groove of the support 1 through a rotating pin shaft 5.

Further, as shown in fig. 1, in the present embodiment, the first end 31 and the second end 32 are rounded. In other embodiments, one of the first end 31 and the second end 32 may be rounded, and the rounded arrangement is not prone to scratch workers.

In addition, in this embodiment, there are three claws 3, and the three claws 3 are uniformly arranged around the central axis O in a circular array, so that the knob portion of the knob switch can be stably held. It is conceivable that in other embodiments the jaws 3 may also be four, five or more.

Further, as shown in fig. 1, in the present embodiment, the preload member 2 includes a tapered section 21, a tapered end surface of the tapered section 21 can slidably abut against the first end 31, an axis of the tapered end surface is coaxial with the central axis O, the tapered end surface is an inverted curved surface, when the preload member 2 is rotated and further approaches the bracket 1, the first end 31 slidably abuts against the tapered end surface and slides along the tapered end surface in a direction away from the central axis O, so that the clamping jaws 3 rotate around the rotation axis, and the second ends 32 perform a clamping knob action that approaches each other.

Further, as shown in fig. 1, the preload member 2 further comprises a grip section 22. The holding section 22 is fixedly connected to one end of the cone section 21 far away from the bracket 1, and the holding section 22 is in a cylindrical shape coaxial with the cone section 21, so that a holding position is provided, and the rotating preload piece 2 can be conveniently held.

Furthermore, in the present embodiment, the curved sidewall of the gripping section 22 is provided with anti-slip lines, which play a role of anti-slip, so as to facilitate the worker to rotate the fastening member 2.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A rotary switch dynamometric clamp, comprising:

a support (1);

the device comprises a preload piece (2) which is arranged on one side of a bracket (1) at an adjustable interval along a first direction, and one end of the preload piece (2) far away from the bracket (1) is provided with a force measuring position for connecting a force measuring device;

-at least three jaws (3), at least three of said jaws (3) being hinged to said support (1) and arranged around a central axis parallel to said first direction, the axis of rotation of said jaws (3) being perpendicular to said first direction, a first end (31) of said jaws (3) being located between said preload member (2) and said support (1), a second end (32) of said jaws (3) being located on the side of said support (1) remote from said preload member (2);

when the distance between the preload piece (2) and the bracket (1) is reduced, the preload piece (2) can be slidably pressed against the first ends (31) so that the second ends (32) perform clamping knob action, and the distances between the second ends (32) and the central shaft are always equal.

2. Knob switch dynamometric clamp according to claim 1, characterized in that a pretension connecting shaft (4) extending in the first direction is fixedly arranged on the bracket (1), and the pretension member (2) is movably inserted onto the pretension connecting shaft (4) in the first direction.

3. The rotary switch dynamometric clamp of claim 2, wherein the pre-tightening connecting shaft (4) is a threaded rod, and the pre-tightening member (2) is threadedly engaged with the pre-tightening connecting shaft (4).

4. The knob switch dynamometric clamp of claim 1, wherein the bracket (1) is a plate-like structure, a plurality of mounting grooves are opened on the bracket (1), and the jaws (3) are respectively inserted into the mounting grooves one by one.

5. Knob switch load cell clamp according to claim 1, wherein said preload member (2) comprises:

a cone segment (21), a tapered end surface of the cone segment (21) being slidably pressed against the first end (31), and an axis of the tapered end surface being coaxial with the central axis.

6. Knob switch load cell clamp according to claim 5, wherein said preload member (2) further comprises:

the holding section (22) is fixedly connected to one end, far away from the support (1), of the cone section (21), and the holding section (22) is in a cylindrical shape coaxial with the cone section (21).

7. The rotary switch dynamometric clamp of claim 6, wherein the curved sidewall of the gripping section (22) is provided with anti-slip threads.

8. Knob switch dynamometric clamp according to claim 1, characterized in that said jaw (3) is of a long rod-like structure, said jaw (3) being hinged to said bracket (1) by means of a rotating pin (5).

9. Knob switch load cell clamp according to claim 1, wherein said first end (31) and/or said second end (32) are rounded.

10. Knob switch dynamometric clamp according to claim 1, wherein said three jaws (3) are uniformly arranged in a circular array around said central axis, said three jaws (3) being uniformly arranged.