Digital display wrench

Abstract

The utility model relates to a digital display wrench which comprises a head, a connecting rod, a handle rod and a locking assembly. An annular flange is formed on the handle rod, and two clamping blocks which are evenly distributed in the circumferential direction at intervals are formed on the annular flange. The locking assembly comprises a core shaft and a shaft sleeve. A radial flange formed in the middle of the mandrel can divide the mandrel into a first end rod and a second end rod. Four clamping grooves which are evenly distributed in the circumferential direction at intervals are formed in the radial flange. The first end rod is fixedly matched with the connecting rod. The second end rod can be inserted into the annular flange and move in the axial direction relative to the annular flange, so that the clamping block can be clamped into the clamping groove and moved out of the clamping groove in a switching mode. And the shaft sleeve is sleeved outside the core shaft and can be fixedly connected with the annular flange through a thread structure. And a thrust part which can be correspondingly matched with the radial flange is formed on the shaft sleeve. And the thrust part can apply axial force on the radial flange, so that the mandrel is fixedly connected with the handle rod. The digital display wrench overcomes the common problem that the torque value of an existing digital display wrench is inconvenient to read at any time.

Description

TECHNICAL FIELD

[0001] The utility model relates to torque wrench technical field, concretely relates to a digital display wrench. BACKGROUND

[0002] The wrench is a commonly used installation and disassembly tool, is the hand tool of using lever principle and turns screw bolt, screw, nut and other threaded fastening bolt or nut opening or sleeve hole fastener. Digital display torque wrench (abbreviation digital display wrench) is a kind of wrench using digital display torque value, and its core technology mainly includes torque sensor, data processing unit and display unit. Torque sensor is the core component of digital display torque wrench, and its main function is to convert the torque signal generated by the wrench into an electrical signal. Common torque sensors include strain gauge type, magneto-electric type, and Hall effect type. The data processing unit receives the electrical signal output by the torque sensor, amplifies, filters, and A / D converts the signal, and finally outputs the digital signal by the display unit.

[0003] The orientation of the head operating end of the existing digital display wrench is relatively fixed with the orientation of the display screen on the control panel. Meanwhile, the axial extension direction of the bolts, nuts and other components in the actual operation scene is variable. Therefore, when using the digital display wrench to tighten the bolts, nuts and other components with the axial direction along the vertical direction, if the reading on the display screen (torque value) can be directly and conveniently seen, when using the digital display wrench to tighten the bolts, nuts and other components with the axial direction perpendicular to the vertical direction, there is a problem that the value on the display screen cannot be directly and conveniently read at any time, which causes the operator to be unable to determine whether the torque value has reached the required state in time, and can only slow down the operation near the required torque range and continue to tighten while observing the reading, which not only restricts the further improvement of the operation efficiency, but also easily causes inconvenience and safety hazards in the tightening operation. SUMMARY

[0004] To overcome the problem of inconvenient reading of torque value of the existing digital display wrench, the utility model provides a digital display wrench, which can relatively adjust the orientation of the operating end of the head and the orientation of the display screen, and can read the torque value on the display screen at any time when tightening the bolts, nuts and other components with the axial direction along different directions, which helps to improve the operation efficiency.

[0005] The utility model solves the technical scheme adopted for its technical problems: a digital display wrench, comprising a head, a connecting rod, a handle and a locking assembly.

[0006] The head and the handle are respectively fixed at both ends of the connecting rod. The middle part of the handle is provided with a control panel, and one end is formed with a handle part. The control panel includes a display screen.

[0007] The other end of the handle rod is formed with an annular flange, and two clamping blocks are formed on the free end of the annular flange and are distributed at intervals in the circumferential direction. The outer periphery of the annular flange is an external thread surface.

[0008] The locking assembly comprises a mandrel and a sleeve. The mandrel is formed with a shaft hole, and a cable connected with the electrical element is inserted through the shaft hole and matched with the control panel.

[0009] A radial flange is formed in the middle of the mandrel, and the radial flange can divide the mandrel into end rod one and end rod two. Four clamping grooves are formed on the radial flange and are distributed at intervals in the circumferential direction. The four clamping grooves are distributed in two pairs in two radial directions, and the two pairs of clamping grooves can be switched to correspondingly match the two clamping blocks.

[0010] The end rod one is fixedly matched with the connecting rod. The end rod two can be inserted into the annular flange and moved axially relative to the annular flange, so that the clamping blocks can be switched to be clamped in the clamping grooves and moved out of the clamping grooves.

[0011] The sleeve is sleeved on the mandrel, and an internal thread surface is formed on the inner wall of the end of the sleeve towards the annular flange, so that the sleeve can be fixedly connected with the annular flange through a threaded structure. By screwing the sleeve, the sleeve can be fixed on the handle rod and detached from the handle rod.

[0012] A thrust portion corresponding to the radial flange is formed on the sleeve. During the process of screwing the sleeve onto the annular flange, the thrust portion can exert an axial force on the radial flange, so that the mandrel is fixedly connected with the handle rod.

[0013] Optionally, the thrust portion is a tapered cylinder formed on the end of the sleeve, and the necked end of the tapered cylinder is a free end. The inner diameter of the free end port of the tapered cylinder is smaller than the outer diameter of the radial flange. When the sleeve is screwed onto the annular flange, the necked end of the tapered cylinder can exert a force on the radial flange, and the mandrel is pushed towards the handle rod side, so that it is firmly connected with the handle rod.

[0014] Optionally, a radially extending rim is formed on the inner wall of the tapered cylinder near the free end port. When the sleeve is screwed onto the annular flange, the rim can contact the end surface of the radial flange to exert a force on the mandrel, and the mandrel is pushed towards the handle rod side, so that it is firmly connected with the handle rod.

[0015] Optionally, a radially extending rim is formed on the inner wall of the sleeve near the free end port. When the sleeve is screwed onto the annular flange, the rim can contact the end surface of the radial flange to exert a force on the mandrel, and the mandrel is pushed towards the handle rod side, so that it is firmly connected with the handle rod.

[0016] Optionally, three strip-shaped straight grooves are evenly distributed alternately on the outer circumferential surface of the second end rod, forming a continuous 270-degree circumferential surface. All strip-shaped straight grooves extend axially. On the inner wall of the annular flange, two protruding pillars are evenly distributed alternately on a continuous 90-degree circumferential surface, with an axial distance between the protruding pillars and the ends of the annular flange. After the second end rod is inserted and matched with the annular flange, rotating the mandrel relative to the handle allows the two protruding pillars to alternately match with the two adjacent strip-shaped straight grooves.

[0017] Optionally, the head is a ratchet-type head.

[0018] The beneficial effects of this utility model are: it overcomes the problem that the torque value of existing digital display wrenches is not convenient to read at any time, which helps to improve work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the split structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the split structure connecting the locking assembly to the connecting rod and the handle.

[0022] Figure 4 Schematic diagram of the axial structure of the locking component Figure 1 .

[0023] Figure 5 Schematic diagram of the axial structure of the locking component Figure 2 .

[0024] Figure 6 This is a schematic diagram of the axial structure of the mandrel.

[0025] In the diagram: 10 Head, 11 Ratchet Head; 20 Link; 30 Handle; 31 Control Panel; 311 Annular Flange; 312 Locking Block; 32 Handle; 40 Locking Assembly; 41 Spindle; 411 End Rod 1; 412 End Rod 2; 4121 Straight Groove; 413 Radial Flange; 4131 Slot; 42 Bushing. Detailed Implementation

[0026] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0027] like Figures 1 to 6 The digital display wrench shown includes mechanical components such as a head 10, a connecting rod 20, a handle 30, and a locking assembly 40, as well as electrical components and sensors. The head 10 and the handle 30 are respectively fixed at both ends of the connecting rod 20. A control panel 31 is provided in the middle of the handle 30, and a handle portion 32 is formed at one end of the handle 30. The control panel 31 includes a display screen. The matching relationship between the electrical components, sensors, and connecting cables, signal lines, etc., and the head 10, connecting rod 20, handle 30, etc., can refer to the prior art, which is not a technical innovation of this application, and therefore will not be described in detail. The head 10 can be selected as a ratchet-type head 11.

[0028] To achieve the design objective of this application, an annular flange 311 is formed at the other end of the handle 30, and two locking blocks 312 evenly distributed around the circumference are formed at the free end of the annular flange 311. The outer circumferential surface of the annular flange 311 is an external threaded surface. The locking assembly 40 includes a spindle 41 and a bushing 42.

[0029] A shaft hole is formed on the body of the spindle 41, and electrical components such as wires and data cables connected to the control panel 31 can pass through the shaft hole of the spindle 41 and extend into the cavity of the connecting rod 20.

[0030] A radial flange 413 is formed at the middle of the mandrel 41, and this radial flange 413 divides the mandrel 41 into end rod one 411 and end rod two 412. Four slots 4131 are formed on the radial flange 413, evenly distributed in a circumferential direction. The four slots 4131 are distributed in two pairs in two radial directions, and the two locking blocks 312 can only be matched with one pair of slots 4131.

[0031] The first end rod 411 is fixedly matched with the connecting rod 20 (by a threaded structure). The second end rod 412 can be inserted into the annular flange 311 and can move axially relative to the annular flange 311, so that the locking block 312 can be switched to engage in and disengage from the locking slot 4131. By rotating the handle 30 or rotating the spindle 41, the two locking blocks 312 can be switched to engage in the corresponding locking slots 4131.

[0032] The bushing 42 is fitted outside the spindle 41, and an internal thread surface is formed on the inner wall of the end facing the annular flange 311, so that the bushing 42 can be fixedly connected to the annular flange 311 through the thread structure.

[0033] The bushing 42 has a thrust portion that corresponds to and matches the radial flange 413. During the process of screwing the bushing 42 onto the annular flange 311, the thrust portion applies an axial force to the radial flange 413, fixing the spindle 41 to the handle 30 and ensuring that the two locking blocks 312 are securely engaged with the (pair) locking slots 4131. At this time, the handle 30 cannot rotate relative to the connecting rod 20 or the head 10, and the spindle 41 cannot move axially. After screwing the bushing 42 off the annular flange 311, the end rod 412 of the spindle 41 can be pulled out of the annular flange 311, and the locking blocks 312 can be moved out of the locking slots 4131. At this time, the handle 30 can rotate relative to the connecting rod 20 or the head 10.

[0034] The thrust section is a tapered cylinder formed at the end of the bushing 42, and the constricted end of the tapered cylinder is a free end. The inner diameter of the free end port of the tapered cylinder is smaller than the outer diameter of the radial flange 413. A radially extending flange plate may also be formed on the inner wall of the tapered cylinder near the free end port.

[0035] When the bushing 42 is screwed onto the annular flange 311, the flange plate can contact the end face of the radial flange 413 and apply force to the mandrel 41 to push the mandrel 41 toward the handle 30 (or the annular flange 311) so that it is firmly connected to the handle 30.

[0036] On the outer circumferential surface of the second end rod 412, three strip-shaped straight grooves 4121 are evenly distributed alternately on a continuous 270-degree circumferential surface, and the strip-shaped straight grooves 4121 extend from the free end face side of the second end rod 412 to the root in the axial direction.

[0037] On the inner wall of the annular flange 311, two protruding posts are evenly distributed alternately on a continuous 90-degree circumferential surface. The protruding posts extend inward at a certain distance relative to the port of the annular flange 311.

[0038] The end rod 412 is inserted and matched with the annular flange 311. By rotating the handle 30 90 degrees around the clockwise or counterclockwise direction, the two protrusions can be switched to match the two adjacent strip-shaped straight grooves 4121, and both can guide the mandrel 41 to slide axially relative to the annular flange 311.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A digital display wrench, comprising a head (10), a connecting rod (20) and a handle (30), and the head (10) and the handle (30) are respectively fixed on both ends of the connecting rod (20); the middle part of the handle (30) is provided with a control panel part (31), and one end is formed with a handle part (32); the control panel part (31) comprises a display screen; characterized in that: A locking assembly (40) is also included; The other end of the handle (30) is formed with an annular flange (311), and two clamping blocks (312) are formed on the free end of the annular flange (311) and are evenly distributed in the circumferential direction; the outer circumferential surface of the annular flange (311) is an external thread surface; The locking assembly (40) includes a mandrel (41) and a sleeve (42); the mandrel (41) is formed with a shaft hole; A radial flange (413) is formed in the middle of the mandrel (41), and the mandrel (41) is divided into an end rod one (411) and an end rod two (412); four clamping grooves (4131) are formed on the radial flange (413) and are evenly distributed in the circumferential direction; The end rod one (411) is fixedly matched with the connecting rod (20); the end rod two (412) can be inserted into the annular flange (311) and moved axially relative to the annular flange (311), so that the clamping blocks (312) can be clamped into the clamping grooves (4131) and moved out of the clamping grooves (4131); the handle (30) is rotated relative to the mandrel (41) The sleeve (42) is sleeved on the outside of the mandrel (41), and an internal thread surface is formed on the inner wall of the end of the sleeve (42) facing the annular flange (311), so that the sleeve (42) can be fixedly connected with the annular flange (311) through a threaded structure; A thrust portion corresponding to the radial flange (413) is formed on the sleeve (42); During the process of screwing the sleeve (42) onto the annular flange (311), the thrust portion can exert an axial force on the radial flange (413), so that the mandrel (41) is fixedly connected with the handle (30).

2. The digital display wrench of claim 1, wherein: The thrust portion is a tapered cylinder formed on the end of the sleeve (42), and the necked end of the tapered cylinder is a free end; the inner diameter of the free end port of the tapered cylinder is smaller than the outer diameter of the radial flange (413).

3. The digital calliper according to claim 2, wherein: A radially extending rim is formed on the inner wall of the tapered cylinder at a position close to the free end port.

4. The digital display wrench of claim 1, wherein: A radially extending rim is formed on the inner wall of the sleeve (42).

5. The digital display wrench of claim 1, wherein: Three strip-shaped straight grooves (4121) are arranged on the outer circumferential surface of the end rod two (412) and are evenly distributed in the circumferential direction; the strip-shaped straight grooves (4121) extend in the axial direction; two protruding columns are arranged on the inner wall of the annular flange (311) and are evenly distributed in the circumferential direction; After the end rod two (412) is inserted and matched with the annular flange (311), the two protruding columns are switchably matched with the adjacent two strip-shaped straight grooves (4121).

6. The digital calliper according to claim 1, wherein: The head (10) is a ratchet head (11).

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