Bearing assembly tool with a knock protection part

Abstract

Disclosed is a percussion protection member (2) for a bearing assembly tool (1), the percussion protection member (2) comprising: a plate (3) configured to deflect a force acting on the percussion protection member (2); and a damping element (4) configured to attenuate a force acting on the percussion protection member (2), wherein the plate (3) has an opening (11) preferably located centrally, the opening (11) being adapted to receive the damping element (4), and wherein the damping element (4) is configured to serve as a connecting member for connecting the percussion protection member (2) to the bearing assembly tool.

Description

Technical Field

[0001] The present invention relates to a hitting guard for a bearing assembly tool and a bearing assembly tool. Background Art

[0002] When installing or assembling a bearing in its corresponding seat, it may be necessary to use a bearing assembly tool with which the bearing can be assembled into the seat. Generally, it is necessary to apply a force to the bearing via the bearing assembly tool to assemble the bearing into its seat. For this purpose, the bearing assembly tool can be equipped with a hitting element that can be struck with a hammer to install the bearing into the bearing seat. Thus, one usually holds the bearing assembly tool with one hand while striking it with a hammer to assemble the bearing into the seat. Therefore, there is a risk that the user misses the hitting element and injures his or her hand. Summary of the Invention

[0003] Therefore, the object of the present invention is to improve the safety of the user when assembling a bearing using a bearing assembly tool.

[0004] This object is solved by a hitting guard for a bearing assembly tool according to claim 1.

[0005] A hitting guard is proposed hereinafter, the hitting guard including: a plate configured to deflect a force acting on the hitting guard; and a damping element configured to attenuate an impact force on the hitting guard. In addition, the damping element is configured to be used as a connecting member for connecting the hitting guard to the bearing assembly tool.

[0006] When using the bearing assembly tool to assemble a bearing in its corresponding seat, the user can assemble the bearing assembly tool onto the bearing while holding the bearing assembly tool with one hand and striking the intended hitting element of the bearing assembly tool with a hammer. The bearing assembly tool thus transmits the striking force of the hammer to the bearing via the bearing assembly tool, which causes the bearing to be assembled in its seat. If the user misses the intended hitting element of the bearing assembly tool, the hammer will strike the hitting guard (especially the plate of the hitting guard), and the risk of injury to the hand of the user holding the bearing assembly tool is reduced, thereby improving the safety of the user.

[0007] Preferably, the plate has a central opening which is adapted to receive a damping element such that the plate and the damping element can be coupled to each other in a simple manner. Further, the damping element can be connected to the bearing assembly tool in a form-fit, force-fit and / or material-fit manner. This can allow the damping element to be easily connected to the assembly element in a safe and / or reversible manner. Additionally, the plate can have a rectangular shape, a circular shape or an oval shape. Preferably, the plate is square, which has the advantage that, compared to a plate having a circular shape with a diameter equal to the length of the side of the square, the area of the plate is larger. Further, a square can be easily assembled into a toolbox.

[0008] According to another embodiment, a molding process such as injection molding is used to manufacture the plate. More specifically, a molding process such as injection molding allows the plate and its structure to be formed in a simple and efficient manner in any desired way. Preferably, the plate is made of plastic, particularly a hard plastic such as polyethylene, which can withstand large impact forces.

[0009] According to another embodiment, the damping element is also formed by a molding process such as injection molding, which allows the damping element and its structure to be formed in a simple manner in any desired shape. Further advantageously, the damping element is made of a material (such as rubber, more particularly, a moldable rubber for injection molding) having damping characteristics and / or shock absorption characteristics. Additionally, the rubber can have a high friction, which can contribute to the connection between the damping element and the bearing assembly tool.

[0010] Preferably, the damping element can have a circumferentially extending receiving groove for receiving the plate, and the opening of the plate is adapted to snap into the groove. Thus, the plate can be connected to the damping element in a simple manner. Further, by snapping the plate into the groove of the damping element, the plate can be easily replaced, for example, if the plate breaks or if the plate needs to be replaced with another plate having different dimensions and / or shape. As an alternative, an appropriate molding process (such as integral injection molding) can also be used to manufacture the plate and the damping element as a combined component. In this case, the connection between the plate and the damping element can be more secure.

[0011] To facilitate the connection between the damping element and the shaft of the bearing assembly tool, the damping element may also have a central hole into which the bearing assembly tool can be inserted. The central hole of the damping element can be a through-hole or a blind hole. This enables the damping element to be simply attached to the shaft of the bearing assembly tool by frictional fit and / or form fit, while the blind hole can serve as a stop, which also provides axial positioning of the damping element on the shaft of the bearing assembly tool.

[0012] Additionally or alternatively, the damping element can be made longer such that it extends onto the bearing assembly tool and provides a gripping portion for the user. More specifically, if the damping element is made of a rubber material, this extension of the damping element onto the bearing assembly tool can make the bearing assembly tool easier for the user to operate.

[0013] Advantageously, the plate has at least one first reinforcement structure and / or at least one second reinforcement structure to strengthen the plate against the impact force acting on the plate in the case where the user does not hit the striking element. Preferably, the first reinforcement structure is circumferentially arranged around the central opening of the plate, and / or the second reinforcement structure extends axially and / or radially outwardly from the central opening towards the edge of the plate. Thus, the first reinforcement structure can strengthen the central opening of the plate, while the second reinforcement structure can strengthen the exterior of the plate. In this way, the forces on the plate can be absorbed by the plate, which improves the stability of the plate and thus the safety of the user. More particularly, the type and / or quantity of the reinforcement structure can be selected according to the dimensions (especially the diameter) of the plate and / or the central opening in the plate.

[0014] According to another preferred embodiment, the damping element has at least one force-deflecting element configured to deflect the forces acting on the plate and strengthen the striking protection or hand guard (especially the damping element), wherein the force-deflecting element is circumferentially arranged around the central hole of the damping element. The at least one force-deflecting element can be provided in the form of discrete elements or as a continuous element. More particularly, the force-deflecting element can be designed as a plurality of ribs, each rib extending radially outwardly and / or axially. Advantageously, the force-deflecting element can allow the forces to be distributed in a more uniform manner over the plate and / or the damping element. This can also increase the stability of the damping element and thus the stability of the striking protection.

[0015] Another aspect of the present invention relates to a bearing assembly tool for assembling a bearing, wherein the bearing assembly tool includes a cylindrical shaft having a first end and a second end that are opposite to each other along the longitudinal direction of the shaft. The first end is adapted to cooperate directly or indirectly with the bearing to be assembled, for example via an impact ring, and an end cap is disposed at the second end of the shaft. More particularly, the impact ring can be adapted to the dimensions of the bearing, so that it is possible to avoid placing the sleeve directly on the bearing.

[0016] The end cap serves as a striking element and is thus configured to receive an impact force via the shaft and transmit the impact force to the bearing, so that the bearing can be assembled. In addition, the above-mentioned impact protection is arranged between the shaft and the end cap such that the plate of the impact protection extends over the shaft. More specifically, the bearing assembly tool has the advantage that the safety of the user can be improved due to the provision of the impact protection.

[0017] Preferably, the shaft is a hollow sleeve, which makes the bearing assembly tool lighter and / or more rigid. In addition, a lighter bearing assembly tool may be easier for the user to operate. In particular, the sleeve can be made of a metallic material such as aluminum and / or a plastic material such as glass fiber reinforced plastic. A metallic sleeve can transmit the striking force better to the bearing, while a sleeve made of a plastic material can be lighter.

[0018] Advantageously, the end cap is made of a plastic material (preferably, hard plastic) using a molding process such as injection molding. A hard non-metallic material (such as hard plastic) can withstand the applied striking force while reducing any noise generated when striking the striking element with a hammer. The end cap or the striking element can be mounted on the second end of the shaft / sleeve of the bearing assembly tool in a form-fitting, force-fitting and / or material-fitting manner. In addition, the end cap and the sleeve can be formed as one workpiece. For example, when the sleeve is formed of glass fiber reinforced plastic, the sleeve can be molded together with an integral end cap or striking element.

[0019] According to another preferred embodiment, the sleeve has a circumferential recess for receiving a damping element and determining its axial position on the sleeve, wherein the recess of the sleeve is configured to provide a stop for the damping element. Thus, the impact protection can be prevented from shifting ( / becoming dislocated). The recess of the sleeve can be formed using a machining process and / or by providing at least one rib on the sleeve, wherein the at least one rib is formed on the outer side of the sleeve and extends along the longitudinal direction of the sleeve. In addition, the rib can reinforce the sleeve against the transmitted force applied to the end cap.

[0020] As described above, the damping element can also be made longer such that it extends onto the sleeve of the bearing assembly tool to provide a gripping portion for the user. More particularly, the damping element can be even long enough such that it extends to the second end of the sleeve and provides a hand gripping portion for the user. The advantage of doing so is that the stop for axially positioning the impact protection can be omitted.

[0021] As an option, the sleeve can be provided with a plurality of ribs, each rib extending along the longitudinal direction of the sleeve, wherein the plurality of ribs are preferably circumferentially distributed evenly around the sleeve. The advantage of having a plurality of ribs is that the additional machining step of forming a recess in the sleeve can be omitted.

[0022] Further preferred embodiments are defined in the dependent claims as well as in the description and the drawings. Thus, elements described or shown in combination with other elements may exist alone or in combination with other elements without departing from the scope of protection.

[0023] In the following, preferred embodiments of the invention are described with reference to the drawings, wherein the drawings are merely exemplary and are not intended to limit the scope of protection. The scope of protection is defined solely by the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings show:

[0025] Figure 1 : A schematic exploded view of a bearing assembly tool according to an embodiment of the invention;

[0026] Figure 2 : Figure 1 A schematic exploded view of the sleeve and the end cap of the bearing assembly tool shown in ;

[0027] Figure 3 : Figure 1 A side view of the damping element of the impact protection of the bearing assembly tool shown in ;

[0028] Figure 4 : Along Figure 3 The side cross-section taken along line A-A in ;

[0029] Figure 5 : Figure 1 An isometric exploded view of the impact protection of the bearing assembly tool shown in ; and

[0030] Figure 6 : A side view of the assembled impact protection.

[0031] REFERENCE SIGNS

[0032] 1 Bearing assembly tool

[0033] 2 Impact protection

[0034] 3 Plate

[0035] 4 Damping element

[0036] 5 Sleeve

[0037] 6 End cap

[0038] 7 First end

[0039] 8 Second end

[0040] 9 Circumferential recess

[0041] 10 Rib

[0042] 11 Opening

[0043] 12 First strengthening structure

[0044] 13 Second strengthening structure

[0045] 14 Receiving groove

[0046] 15 Hole

[0047] 16 Force deflection element

[0048] 17 Edge

[0049] 18 Bottom

[0050] 19 Thread

[0051] 20 Edge

[0052] 21 Stopping part

[0053] 22 Top

[0054] 23 Rib Detailed implementation manners

[0055] In the following, the same or similar functional elements are indicated by the same reference numerals.

[0056] Figure 1 A schematic exploded view of a bearing assembly tool 1 according to an embodiment is shown, and details of the bearing assembly tool 1 are shown in Figures 2 to 6 .

[0057] The bearing assembly tool 1 has a cylindrical sleeve 5 and an end cap 6. The sleeve 5 is preferably made of a lightweight material (such as aluminum or glass fiber reinforced plastic), and has a first end 7 and a second end 8 that are opposite to each other along the longitudinal direction of the sleeve 5.

[0058] The first end 7 is adapted to cooperate with a bearing (not shown) to be assembled, and the end cap 6 is arranged at the second end 8 of the sleeve 5. The end cap 6 is preferably made of a plastic material (for example, hard plastic), and is configured to receive a knocking force and transmit the knocking force through the sleeve 5 to the bearing, so as to be able to assemble the bearing.

[0059] In order to assemble the bearing in its corresponding seat, the user directly or indirectly (for example, via an impact ring (not shown)) assembles the first end 7 of the sleeve 5 of the bearing assembly tool 1 on the bearing while holding the bearing assembly tool 1 with one hand, and knocks (hits / strikes / impacts) the end cap 6 of the bearing assembly tool 1 located at the second end 8 of the sleeve 5 with, for example, a hammer. In other words, the end cap serves as a knocking element.

[0060] Then, the bearing assembly tool 1 transmits the impact force of the hammer to the bearing through the sleeve, which enables the bearing to be assembled in its seat. The bearing assembly tool 1 is equipped with a hitting guard 2 or a hand guard including a plate 3 and a damping element 4 to prevent the user from hitting the end cap 6 of the bearing assembly tool 1. As can be seen in Figure 1 As can be seen, the hitting guard 2 is arranged between the sleeve 5 and the end cap 6 and can be attached to the sleeve 5 by the damping element 4. Therefore, the damping element 4 also serves as a connecting member for fixing the plate 3 to the sleeve 5. In the assembled state, the plate 3 of the hitting guard 2 extends over the sleeve 5 such that a misaligned impact of the hammer will strike the hitting guard 2 (in particular, the plate 3 of the hitting guard 2) rather than the user's hand. Thus, the risk of hand injury is reduced.

[0061] To mount the hitting guard 2 to the bearing assembly tool 1, the sleeve 5 has a circumferential recess 9 which provides an axial stop 21 for the damping element 4 and receives and positions the damping element 4 axially on the sleeve 5. In Figure 1 the embodiment, the recess is machined into the sleeve 5.

[0062] As Figure 2 shown in the embodiment shown in

[0063] the sleeve 5 can be provided with a plurality of ribs 10, each of which is formed on the outer side of the sleeve 5 and extends in the longitudinal direction of the sleeve 5. Thus, the plurality of ribs 10 form the circumferential recess 9, whereby a separate machining step for forming the recess can be omitted. As can be further seen, the second end 8 of the sleeve 5 can be provided with a thread 19 for connecting the end cap 6 to the sleeve 5. However, other fastening methods for connecting the end cap 6 to the sleeve 5 can be used. Figure 4 and Figure 5 ) and the sleeve 5 of the bearing assembly tool 1 can be inserted into the central hole 15. The central hole 15 of the damping element 4 is formed as a through hole and has a size that fits closely to the sleeve 5 (i.e., into the circumferential recess 9). Thus, the edge 20 of the damping element 4 ( Figure 3 and Figure 4 ) can abut against the stop 21 formed by the circumferential recess 9.

[0064] Advantageously, the damping element 4 is injection molded from a material having damping and / or shock-absorbing properties (such as moldable rubber). In addition, the rubber has the additional advantage that it has a relatively high friction with the metallic material of the sleeve 5, which further contributes to the connection between the damping element 4 and the sleeve 5.

[0065] The damping element 4 further has at least one force - deflecting element 16 configured to deflect the impact force acting on the plate 3 and enhance the damping element 4. The force - deflecting element 16 is formed as a plurality of ribs 16 circumferentially arranged around the central hole 15 of the damping element 4. Each of the ribs is formed such that it extends outwardly both axially and radially, as shown in Figure 3 and Figure 4 .

[0066] As further shown in Figure 3 , Figure 4 and Figure 5 , the damping element 4 has a circumferentially extending receiving groove 14, and the receiving groove 14 is adapted to cooperate with the central opening 11 of the plate 3 (see Figure 5 ). Thus, the central opening 11 is adapted to snap into the receiving groove 14 of the damping element 4. This snapping function allows for a simple and effective connection between the damping element 4 and the plate 3. The assembled state of the plate 3 and the damping element 4 is shown in Figure 6 .

[0067] To better withstand the impact force on the plate 3, the plate 3 has a plurality of strengthening structures 12, 13 shown in Figure 5 and Figure 6 . The first strengthening structure 12 is circumferentially arranged around the central opening 11 of the plate 3 and can be arranged on the top 22 of the plate 3 and / or at the opposite side portions 18. The first strengthening structure 12 provides increased stability and provides a seat for connecting the damping element 4.

[0068] The second strengthening structure 13 is designed as ribs 23, and the ribs 23 extend outwardly both axially and radially from the central opening 11 towards the edge 17 of the plate 3. As can be seen from Figure 5 and Figure 6 , the ribs 23 are arranged on the top 22 of the plate 3 and on the opposite bottom side portions 18 of the plate 3, and the ribs 23 strengthen the plate 3 against the impact force.

[0069] In summary, when the impact protection member 2 is arranged at the bearing assembly tool 1, the impact protection member 2 can improve the safety of the user by protecting the user from the impact force applied to the bearing assembly tool. In addition, a number of strengthening and force - damping structures 12, 13, 16 are arranged at both the plate 3 and the damping element 4 of the impact protection member 2 to enhance the impact protection member 2 against the impact force.

Claims

1. A striking protection member (2) for a bearing assembly tool (1), comprising: a plate (3) configured to deflect a force acting on the striking protection member (2); and a damping element (4) configured to attenuate a force acting on the striking protection member (2), wherein the plate (3) has an opening (11) adapted to receive the damping element (4), characterized in that the damping element (4) is configured to act as a connecting member for connecting the striking protection member (2) to the bearing assembly tool (1), and the damping element (4) has at least one force deflection element (16) configured to deflect a force acting on the plate (3).

2. The striking protection member (2) according to claim 1, characterized in that the damping element (4) has a circumferentially extending receiving groove (14) for receiving the plate (3), and the opening (11) of the plate (3) is adapted to snap into the receiving groove (14).

3. The striking protection member (2) according to claim 1 or 2, characterized in that the damping element (4) has a central hole (15) into which the bearing assembly tool can be inserted.

4. The striking protection member (2) according to claim 1 or 2, characterized in that the plate (3) has at least one first strengthening structure (12) and / or at least one second strengthening structure (13) for strengthening the plate (3) against a force acting on the plate (3), wherein the first strengthening structure (12) is circumferentially arranged around the central opening (11) of the plate, and / or the second strengthening structure (13) extends radially outward from the central opening (11) towards the edge (17) of the plate (3).

5. The striking protection member (2) according to claim 1 or 2, characterized in that the force deflection element (16) is circumferentially arranged around the central hole (15) of the damping element (4).

6. The striking protection member (2) according to claim 5, characterized in that the force deflection element (16) has a plurality of ribs, each of which extends radially outward.

7. The striking protection member (2) according to claim 1 or 2, characterized in that the damping element (4) can be connected to the bearing assembly tool in a form - fit manner, a force - fit manner, and / or a material - fit manner.

8. The striking protection member (2) according to claim 1 or 2, characterized in that the plate (3) is made of plastic.

9. The striking protection member (2) according to claim 1 or 2, characterized in that the damping element (4) is made of rubber.

10. The striking protection member (2) according to claim 1, characterized in that the opening (11) is located centrally.

11. The striking protection member (2) according to claim 8, characterized in that the plate (3) is made of hard plastic.

12. The striking protection member (2) according to claim 11, characterized in that the hard plastic is polyethylene.

13. The striking protection member (2) according to claim 9, characterized in that The damping element (4) is made of moldable rubber.

14. A bearing assembly tool (1) for assembling a bearing, comprising: a cylindrical shaft (5) having a first end (7) and a second end (8) opposite each other along the longitudinal direction of the shaft (5), wherein the first end (7) is adapted to cooperate with the bearing to be assembled; an end cap (6) disposed at the second end (8) of the shaft (5), wherein the end cap (6) is configured to receive a force and transmit the force to the bearing via the shaft (5) such that the bearing can be assembled, characterized in that the percussion protection member (2) according to any one of claims 1 to 13 is disposed between the shaft (5) and the end cap (6) such that the plate (3) of the percussion protection member (2) extends over the shaft (5).

15. The bearing assembly tool (1) according to claim 14, characterized in that the shaft (5) has a circumferential recess (9) for receiving the damping element (4) and determining its axial position on the shaft (5), wherein the circumferential recess (9) is configured to provide a stop (21) for the damping element (4).

Images