CN213647376U - Slider and torque wrench - Google Patents

Abstract

The application provides a slider and torque wrench belongs to torque wrench technical field. Wherein, the slider is the monolithic structure that same material made. The end face of one axial end of the sliding block is provided with a containing groove for clamping the square blocks, and the peripheral wall of the sliding block is provided with an oil groove. The slider is the integral structure that same material was made, and it does not have any assembly itself, can practice thrift manpower and materials in a large number, and integral slider has better intensity, is difficult for being destroyed, has fine stability. In addition, because be equipped with the oil groove on the perisporium of slider, the oil groove can be used for holding lubricating oil, reduces the slider at the frictional force of face contact slip in-process, reduces the wearing and tearing of slider, can effectively improve the life of slider.

Description

Slider and torque wrench

Technical Field

The application relates to the technical field of torque wrenches, in particular to a sliding block and a torque wrench.

Background

At present, a sliding block in a torque wrench generally comprises a central iron piece, a plastic sleeve and steel balls, wherein the plastic sleeve is arranged on the periphery of the central iron piece, and the steel balls are arranged on the plastic sleeve and protrude out of the peripheral surface of the plastic sleeve so as to ensure the smoothness of sliding of the sliding block. When the sliding block with the structure is assembled, the plastic sleeve needs to be assembled to the outer side of the central iron piece, and then the steel balls are installed on the plastic sleeve, so that the assembling process is troublesome, and the workload is large.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a slider and a torque wrench to improve the problem that work load is big in the current slider self assembling process.

In a first aspect, an embodiment of the present application provides a slider, where the slider is an integral structure made of the same material;

the end face of one axial end of the sliding block is provided with a containing groove for clamping the square blocks, and the peripheral wall of the sliding block is provided with an oil groove.

In the above scheme, the slider is the integral structure that same material was made, and it does not have any assembly by itself, can practice thrift manpower and materials in a large number, and integral slider has better intensity, is difficult for being destroyed, has fine stability. In addition, because be equipped with the oil groove on the perisporium of slider, the oil groove can be used for holding lubricating oil, reduces the slider at the frictional force of face contact slip in-process, reduces the wearing and tearing of slider, can effectively improve the life of slider.

In some embodiments, the slider is a cylindrical structure.

In the above scheme, the slider is of a cylinder structure, is simple in structure and is easy to mold and manufacture.

In some embodiments, the oil groove is a first annular groove circumferentially disposed on a peripheral wall of the slider.

In the above scheme, the sliding groove is an annular groove, the lubricating oil in the sliding groove can lubricate the peripheral wall of the sliding block in the whole periphery, and the smoothness of the sliding process of the sliding block is improved.

In some embodiments, a cross-section of a groove wall of the first annular groove is circular arc-shaped.

In the above scheme, the cross section of the groove wall of the first annular groove is arc-shaped, and the lubricating oil in the first annular groove can flow to the peripheral wall of the sliding block more easily in the moving process of the sliding block due to the structure, so that the lubricating is realized.

In some embodiments, a second annular groove is provided on the peripheral wall of the slider at a distance from the first annular groove.

In the above scheme, be equipped with on the perisporium of slider and have the second annular groove in clearance with first annular groove, on the one hand, the area of contact in the slider slip process can be reduced in the setting of second annular groove, and on the other hand, the second annular groove also can play the effect of holding lubricating oil.

In some embodiments, the second annular groove has a width in the slider axial direction larger than a width of the first annular groove.

In the above scheme, the width of the second annular groove is larger than that of the first annular groove, so as to reduce the contact area of the sliding block in the sliding process as much as possible.

In some embodiments, the sliding block is a unitary structure die-cast from powder of the same material.

In the above scheme, the slider is the integral structure that adopts the powder die-casting of same material shaping, and the size of slider is controlled easily, and bulk strength is high, is difficult to destroyed.

In a second aspect, an embodiment of the present application further provides a torque wrench, which includes a pulling arm, a sleeve, a block, an elastic member, and the above-mentioned sliding block,

one end of the pulling arm extends into the sleeve, a gap exists between the outer peripheral wall of the pulling arm and the inner peripheral wall of the sleeve, and the pulling arm can be arranged on the sleeve in a swinging mode;

the square block is positioned in the sleeve;

the sliding block is movably arranged in the sleeve, and the square block is partially accommodated in the accommodating groove;

the elastic piece is arranged in the sleeve and acts on the sliding block, so that the square block is abutted between the sliding block and the wrenching arm.

Among the above-mentioned scheme, the slider among the torque wrench is monolithic structure, and overall structure is simple, and self does not have any assembly, can practice thrift manpower and materials in a large number, and monolithic slider has better intensity, is difficult for being destroyed, has fine stability. The slider forms the face contact with the sleeve pipe, and the oil groove of slider can be used for holding lubricating oil to reduce the frictional force between slider and the sleeve pipe, reduce the wearing and tearing of slider and sleeve pipe, improved the life of slider.

In some embodiments, the torque wrench further comprises an adjustment assembly;

the adjusting component is connected to the sleeve and used for adjusting the elastic force applied to the sliding block by the elastic piece.

In the above scheme, the size of the elastic force applied to the sliding block by the elastic piece can be adjusted through the adjusting assembly, so that the purpose of adjusting the preset torque of the torque wrench is achieved.

In some embodiments, the adjustment assembly comprises a handle and a screw;

the handle is sleeved at one end of the sleeve far away from the wrenching arm;

the screw rod is installed in the handle and can rotate along with the handle, the screw rod is in threaded connection with the sleeve, and two ends of the elastic piece are respectively abutted against the sliding block and the screw rod.

In the above scheme, the handle can be rotated to drive the screw rod to rotate, so that the position of the screw rod is changed, the compression amount of the elastic piece is adjusted by changing the position of the screw rod, and the elastic piece is adjusted to apply the elastic force to the sliding block. The adjusting component is simple in structure and convenient for adjusting the compression amount of the elastic piece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a conventional slider according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a torque wrench according to an embodiment of the present disclosure;

FIG. 3 is an enlarged view of the wrench A shown in FIG. 2;

FIG. 4 is an enlarged view of the wrench shown in FIG. 2 at B;

FIG. 5 is a schematic structural view of the slider shown in FIG. 4;

fig. 6 is a partial view of the torque wrench of fig. 2.

Icon: 10. 10 a-a slider; 101 a-central iron; 102 a-plastic sheath; 103 a-steel ball; 101-accommodating grooves; 102-an oil groove; 103-a second annular groove; 11-pulling the arm; 111-a threaded hole; 12-a sleeve; 13-a square; 14-an elastic member; 15-pulling the head; 16-a ratchet mechanism; 17-a pin shaft; 18-an intermediate piece; 181-card slot; 19-an adjustment assembly; 191-a handle; 192-screw rod; 20-a first gasket; 21-a second gasket; 23-a nut seat; 24-a first nut; 25-a second nut; 26-a third gasket; 27-a third nut; 28-a locking pin; 29-tail cap; 100-torque wrench.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and "third" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Fig. 1 is a schematic structural diagram of a conventional slider 10a according to an embodiment of the present application. In the prior art, as shown in fig. 1, a slider 10a includes a central iron member 101a, a plastic sleeve 102a, and steel balls 103a, where the plastic sleeve 102a is sleeved outside the central iron member 101a, the plastic sleeve 102a and the central iron member 101a are bonded together, the steel balls 103a are rotatably disposed on the plastic sleeve 102a, and the steel balls 103a protrude from an outer circumferential surface of the plastic sleeve 102 a.

The slider 10a adopting the split structure has the following problems:

the assembly is troublesome, and the assembly workload is large; the tolerance of the plastic sleeve 102a is difficult to guarantee, and the waste rate is high during assembly; the outer plastic sleeve 102a is not strong enough and is easily damaged; in the transfer process of the slide block 10a, the steel ball 103a is easy to fall off; the stability of the entire structure of the slider 10a is poor, and the production efficiency is low.

Fig. 2 is a schematic structural diagram of a torque wrench 100 according to an embodiment of the present disclosure. As shown in fig. 2, the present embodiment provides a torque wrench 100, which includes a slider 10, a trigger arm 11, a sleeve 12, a block 13, and an elastic member 14.

One end of the pulling arm 11 extends into the sleeve 12, a gap exists between the outer peripheral wall of the pulling arm 11 and the inner peripheral wall of the sleeve 12, and the pulling arm 11 is swingably provided with the sleeve 12. Block 13 is located within sleeve 12. The slider 10 is movably disposed within the sleeve 12. The elastic element 14 is arranged inside the sleeve 12 and acts on the slider 10 to make the block 13 abut between the slider 10 and the wrenching arm 11.

In practical use, when the torque applied to the torque wrench 100 is greater than the predetermined torque of the torque wrench 100 during the operation of the torque wrench 100, the pulling arm 11 will swing relative to the sleeve 12 and hit the inner wall of the sleeve 12 to generate sound. During the swinging of the trigger arm 11 relative to the sleeve 12, the trigger arm 11 applies a pushing force to the slider 10 through the block 13, so that the slider 10 slides in the sleeve 12 against the elastic force of the elastic member 14. When the torque applied to the torque wrench 100 is removed, the slide 10 will slide and reset relative to the sleeve 12 under the action of the elastic member 14, so as to reset the wrench arm 11.

Fig. 3 is a partially enlarged view of the wrench at a in fig. 2. As shown in fig. 3, the pulling arm 11 is provided with a pulling head 15 for engaging with a pulled member, the pulling head 15 is rotatably disposed around its own axis on a portion of the pulling arm 11 outside the sleeve 12, the rotation axis of the pulling head 15 is perpendicular to the extending direction of the pulling arm 11, and a ratchet mechanism 16 is disposed between the pulling head 15 and the pulling arm 11.

After the wrench head 15 is engaged with the wrenched member, when the torque wrench 100 is wrenched in the forward direction, the wrench head 15 rotates along with the wrenching arm 11 under the action of the ratchet mechanism 16; when the torque wrench 100 is wrenched in the reverse direction, the wrenching arm 11 will rotate relative to the wrenching head 15. When the driven member is wrenched by the torque wrench 100, the torque wrench 100 is wrenched forward by a certain angle to drive the driven member to rotate forward by a certain angle, and then the torque wrench 100 is wrenched backward by a certain angle, at this time, the driven member will not rotate backward, and the wrenched member can be screwed down or unscrewed by repeating the above operations.

The pulled piece can be a nut or a bolt; the wrench head 15 may be a male head engaged with a nut, or a female head engaged with a head of a bolt. Fig. 3 exemplarily shows a case where the wrench head 15 is a male head to be engaged with a nut.

Illustratively, the trigger arm 11 is rotatably connected to the sleeve 12 by a pin 17, and the trigger arm 11 is rotatable relative to the sleeve 12 about the pin 17. The pulling arm 11 and the sleeve 12 are both provided with a hole for the pin shaft 17 to pass through, and the hole for the pin shaft 17 to pass through on the pulling arm 11 is approximately located in the middle of the pulling arm 11 in the extending direction.

It should be noted that the block 13 may directly abut against the pulling arm 11, or may indirectly abut against the pulling arm 11.

Fig. 4 is a partially enlarged view of the wrench at B in fig. 2. Illustratively, as shown in fig. 4, the block 13 is a rectangular block, and the block 13 indirectly abuts against the trip arm 11.

The end of the trigger arm 11 extending to the sleeve 12 is provided with an intermediate part 18, the intermediate part 18 is arranged opposite to the slider 10, and a clamping groove 181 for clamping the block 13 is arranged at the end of the intermediate part 18 facing the slider 10.

Wherein, the end of the wrenching arm 11 extending to the sleeve 12 is provided with a threaded hole 111, and the middle part 18 is partially screwed in the threaded hole 111.

Fig. 5 is a schematic structural view of the slider 10 shown in fig. 4. As shown in fig. 5, the slider 10 provided in the embodiment of the present application is an integral structure made of the same material, an end surface of one axial end of the slider 10 is provided with an accommodating groove 101 into which the block 13 is inserted, and a circumferential wall of the slider 10 is provided with an oil groove 102.

In the above scheme, the slider 10 is an integral structure made of the same material, and the assembly does not exist, so that manpower and material resources can be greatly saved, and the integral slider 10 has better strength, is not easy to damage and has good stability. In addition, because the peripheral wall of the slider 10 is provided with the oil groove 102, the oil groove 102 can be used for containing lubricating oil, so that the friction force of the slider 10 in the surface contact sliding process with the sleeve 12 is reduced, the abrasion of the slider 10 is reduced, and the service life of the slider 10 can be effectively prolonged.

In some embodiments, the slider 10 may be a unitary structure formed from an alloy steel, which provides the slider 10 with superior strength and wear resistance.

Optionally, the sliding block 10 is an integral structure formed by die-casting powder made of the same material, and the sliding block 10 is easy to control in size, good in stability, high in overall strength and not easy to damage.

Understandably, the powder is alloy steel powder.

In some embodiments, the slider 10 has a cylindrical structure, and is simple in structure and easy to mold, the peripheral wall of the slider 10 can be matched with the inner wall of the sleeve 12, and the peripheral wall of the slider 10 and the inner wall of the sleeve 12 can form surface contact.

Alternatively, the oil groove 102 is a first annular groove circumferentially disposed on the peripheral wall of the slider 10, and this structure allows the lubricating oil in the sliding groove to lubricate the peripheral wall of the slider 10 over the entire circumference, thereby improving the smoothness of the slider 10 during sliding.

Illustratively, the cross section of the groove wall of the first annular groove is circular arc, and the structure enables the lubricating oil in the first annular groove to flow onto the peripheral wall of the sliding block 10 more easily during the moving process of the sliding block 10, so that the lubricating oil is lubricated.

In some embodiments, the slider 10 is provided with a second annular groove 103 on the peripheral wall thereof, spaced from the first annular groove.

On the one hand, the second annular groove 103 is provided to reduce the contact area during sliding of the slider 10, and on the other hand, the second annular groove 103 also serves to contain lubricating oil.

Alternatively, the width of the second annular groove 103 in the axial direction of the slider 10 is larger than that of the first annular groove.

Illustratively, the width of the second annular groove 103 is more than 3 times the width of the first annular groove.

With continued reference to fig. 4, the slider 10 and the sleeve 12 form a sliding fit, the engaging groove 181 on the intermediate member 18 is disposed opposite to the receiving groove 101 on the slider 10, the block 13 is partially received in the receiving groove 101, the block 13 is partially engaged in the engaging groove 181, the receiving groove 101 and the engaging groove 181 limit the block 13, and the block 13 is located between the intermediate member 18 and the slider 10 to perform a function of transmitting a force. The block 13 is pressed between the intermediate member 18 and the slider 10 by the elastic member 14.

When the torque applied to the torque wrench 100 is greater than the predetermined torque of the torque wrench 100 during the operation of the torque wrench 100, the portion of the block 13 inserted into the slot 181 is partially deviated from the slot 181, so that the pulling arm 11 can swing with respect to the sleeve 12 to make the pulling arm 11 hit the inner wall of the sleeve 12.

The magnitude of the preset torque of the torque wrench 100 depends on the magnitude of the elastic force applied by the elastic member 14 to the slider 10, the larger the elastic force applied by the elastic member 14 to the slider 10 is, the larger the preset torque of the torque wrench 100 is, and conversely, the smaller the preset torque of the torque wrench 100 is.

Fig. 6 is a partial view of the torque wrench 100 shown in fig. 2. As shown in fig. 6, in some embodiments, the torque wrench 100 further comprises an adjustment assembly 19, the adjustment assembly 19 is connected to the sleeve 12, and the adjustment assembly 19 is used for adjusting the amount of the elastic force applied to the slider 10 by the elastic member 14. The amount of the elastic force applied to the slider 10 by the elastic member 14 can be adjusted by the adjusting assembly 19 to achieve the purpose of adjusting the preset torque of the torque wrench 100.

Optionally, the adjusting assembly 19 includes a handle 191 and a screw 192, the handle 191 is sleeved on one end of the sleeve 12 far away from the wrench arm 11; the screw 192 is installed in the handle 191 and can rotate along with the handle 191, the screw 192 is screwed in the sleeve 12, and both ends of the elastic member 14 abut against the slider 10 and the screw 192 respectively.

The screw 192 is rotated by rotating the handle 191, so that the position of the screw 192 is changed, and the compression amount of the elastic member 14 is adjusted by changing the position of the screw 192, so as to adjust the magnitude of the elastic force applied to the slider 10 by the elastic member 14. Such an adjustment assembly 19 is simple in construction and facilitates adjustment of the amount of compression of the resilient member 14.

Illustratively, the resilient member 14 is a spring.

It should be noted that both ends of the elastic member 14 may directly abut against the sliding block 10 and the screw 192, and both ends of the elastic member 14 may also indirectly abut against the sliding block 10 and the screw 192.

Illustratively, one end of the elastic element 14 abuts against the slider 10 through a first gasket 20, and the first gasket 20 is arranged between the elastic element 14 and the slider 10; the other end of the elastic element 14 abuts against the screw 192 through a second gasket 21, and the second gasket 21 is arranged between the elastic element 14 and the screw 192.

Further, a nut seat 23 is arranged in the handle 191, a first nut 24, a second nut 25 and a third gasket 26 are arranged on the screw 192, the first nut 24 is arranged in the nut seat 23, the first nut 24 and the second nut 25 are both screwed on the screw 192, the third gasket 26 is sleeved on the periphery of the screw 192, the third gasket 26 is located between the first nut 24 and the second nut 25, and the third gasket 26 tightly abuts against a step surface on the inner wall of the handle 191 under the combined action of the first nut 24 and the second nut 25, so that the screw 192 and the handle 191 are fixed.

The sleeve 12 is provided with a third nut 27, the third nut 27 is locked with the sleeve 12 by a lock pin 28, and the screw 192 is screwed with the third nut 27.

Illustratively, the handle 191 is a tubular structure with two open ends, the end of the handle 191 far away from the cannula 12 is screwed with the tail cover 29, and the tail cover 29 blocks the open end of the handle 191 far away from the cannula 12.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The sliding block is characterized in that the sliding block is of an integral structure made of the same material;

the end face of one axial end of the sliding block is provided with a containing groove for clamping the square blocks, and the peripheral wall of the sliding block is provided with an oil groove.

2. The slider of claim 1 wherein said slider is of cylindrical construction.

3. The slider of claim 2 wherein the oil groove is a first annular groove disposed circumferentially on a peripheral wall of the slider.

4. The slider of claim 3 wherein the cross-section of the groove wall of the first annular groove is circular.

5. A slider according to claim 3, characterised in that the peripheral wall of the slider is provided with a second annular groove at a distance from the first annular groove.

6. The slider of claim 5 wherein the width of the second annular groove in the slider axial direction is greater than the width of the first annular groove.

7. The slider of claim 1 wherein said slider is a unitary structure die cast from powder of the same material.

8. A torque wrench, comprising:

pulling the arm;

the sleeve is provided with a gap between the outer peripheral wall of the pulling arm and the inner peripheral wall of the sleeve, and the pulling arm can be arranged in the sleeve in a swinging manner;

a block located within the casing;

the slider of any of claims 1-7, movably disposed within the sleeve, the dice partially received within the receiving slot; and

the elastic piece is arranged in the sleeve and acts on the sliding block, so that the square block is abutted between the sliding block and the wrenching arm.

9. The torque wrench of claim 8, further comprising an adjustment assembly;

the adjusting component is connected to the sleeve and used for adjusting the elastic force applied to the sliding block by the elastic piece.

10. The torque wrench of claim 9, wherein the adjustment assembly includes a handle and a screw;

the handle is sleeved at one end of the sleeve far away from the wrenching arm;

the screw rod is installed in the handle and can rotate along with the handle, the screw rod is in threaded connection with the sleeve, and two ends of the elastic piece are respectively abutted against the sliding block and the screw rod.

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